Arya needs to add 2 gallon of 70% antifreeze must be added to a 3-gallon mixture containing 20% antifreeze to obtain the mixture they need.
What is antifreeze?
Antifreeze is an additive that lowers a liquid's freezing point that is made of water. For cold environments, freezing-point depression is accomplished using an antifreeze mixture. Additionally, common antifreezes raise the liquid's boiling point, enabling higher coolant temperatures.
Let x be the amount of 70% antifreeze to be added, in gallons.
In terms of percentage of antifreeze, we write:
20% of 3 gallons + 70% of x gallons = 50% of (3 + x) gallons
0.2(3) + 0.7x = 0.5(3 + x)
0.6 + 0.7x = 1.5 + 0.5x
0.7x - 0.5x = 1.5 - 0.6
0.2x = 0.4
x = 2
Hence, Arya needs to add 2 gallon of 70% antifreeze must be added to a 3-gallon mixture containing 20% antifreeze to obtain the mixture they need.
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10. A teacher buys 12 boxes of candies. There are 8 candies in each box. The
teacher wants to distribute candies among students so that all students get the
same number of candies and most of the candies are distributed. If there are
30 students in the classroom, how many candies does the teacher have left?
Answer:
6
Step-by-step explanation:
12*8=96
96/3= 3 remainder 6
Mishka is on a long road trip, and she averages 70 mph for 2 hours while she's driving on the highway. While she's driving on side roads for 1 hour, she only averages 35 mph. What is the total distance that she covers on her road trip?.
Answer:
highway: 70 × 2 = 140 miles
side roads: 35 × 1 = 35 miles
total distance: 140 miles + 35 miles = 175 miles
im sorry if the answer is wrong :)
What is the solution of the system of equations y =- 4x 10?
The solution of the given system of equation is (8, -22).
In the given question we have to find the solution to the system of equations:
y = -4x + 10 and y = -2x - 6
We can solve the system of equation using the substitution method.
In substitution method we have to put the the value of one variable from one equation to the other equation.
We have to equations:
y = -4x + 10...................................(1)
y = -2x - 6.............................(2)
Now putting the value of y from the equation 1 in equation 2
-4x + 10 = -2x - 6
Add 6 on both side we get
-4x + 16 = -2x
Add 4x on both side, we get
2x = 16
Divide by 2 on both side, we get
x = 8
Now the value of x is 8.
Now putting the value of x in equation 1
y = -4(8) + 10
y = -32 + 10
y = -22
Hence, the solution of the given system of equation is (8, -22).
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The right question is:
What is the solution of the system of equations y = -4x + 10 and y = -2x - 6?
What is the median of 4 and 7?
The median of 4 and 7 is 5.5.
The median is the middle point in a dataset—half of the data points are smaller than the median and half of the data points are larger.
The data set's median is the value in the center. Put all the numbers in ascending or descending order, and then choose the middle number to determine the median. There will only be one middle integer if the number of data points is odd. If the number of data points is even, you must choose the middle two numbers, add them together, and divide by two. Your median will be that value.
The mean of these middle values is (4+7)/2 = 11/2= 5.5
Thus, the median of 4 and 7 is 5.5.
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anova can be used to test whether more than two population variances are different. group of answer choices true fals
To determine whether there are differences between more than two population variances, utilise anova is True
What is Anova?
A statistical technique called analysis of variance, or ANOVA, divides observed variance data into various components for use in further testing. When there are three or more data groups, a one-way ANOVA is used to find out how the dependent and independent variables are related.
Concept:
One-way ANOVAs are typically used when there are three or more categorical independent groups, although they can also be employed when there are only two groups (but an independent-samples t-test is more commonly used for two groups)
A statistical procedure called Analysis of Variance (ANOVA) is used to examine variations between the means (or averages) of several groups. It is used in a variety of situations to discover whether there are any differences between the means of various groups.
To determine how the values of two categorical factors affect the mean of a quantitative variable, a two-way ANOVA is utilised. When you wish to determine how two independent factors interact with one another to effect a dependent variable, use a two-way ANOVA.
The absence of a difference in means is always the null hypothesis in an ANOVA. The alternative or research hypothesis, which is typically expressed in words rather than mathematical symbols, asserts that the means are not all equal. The research hypothesis involves any difference in means, such as when all four means are different from one another, one mean differs from the other three, two means differ, and so on. All scenarios other than the equality of all means described in the null hypothesis are covered by the alternative hypothesis, as it was previously illustrated.
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A statistical procedure called Analysis of Variance (ANOVA) is used to examine variations between the means (or averages) of several groups. It is used in a variety of situations to discover whether there are any differences between the means of various groups.
To determine how the values of two categorical factors affect the mean of a quantitative variable, a two-way ANOVA is utilised. When you wish to determine how two independent factors interact with one another to effect a dependent variable, use a two-way ANOVA.
What are the 5 functions of roots?
Main five functions of the roots are as follow:
1.Anchorage of the plant
2. Absorption of water
3. Absorption of minerals or food
4. Preventing soil erosion
5. Transportation of food.
Five function of the roots of the plants:
Anchorage : It helps to fix the root part of the plant to the soil and help to grow the aerial shoot system of the plant or tree. Absorption of water : It helps to absorb water through the roots of the plants from the soil . Absorption of Minerals : it helps to absorbs salts and mineral from the soil to the roots of the plants. Preventing Soil Erosion : Root help to prevent the soil by binding the soil to the roots of the plants.Transport : Roots helps to transport salt , water , and mineral from the soil to the shoot part of the plant.Therefore, the five functions of the roots of the plants are
1.Anchorage of the plant
2. Absorption of water
3. Absorption of minerals or food
4. Preventing soil erosion
5. Transportation of food.
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How do you explain greater than less than equal to?
As per the concept of numbers, the way of explaining the greater than, less than, and equal to are defined below.
The term number in math is referred to an arithmetic value used for representing the quantity and used in making calculations.
Here we have to know that the greater than sign (>) denotes that the number after the more than sign is smaller than the number before the symbol whereas less than sign (<) denotes that the number after the sign is bigger than the number before the sign.
Similarly, to this definition, the term equal defines the number as being equal to each other or it can be used to assign the value to the variable that has been placed on the left-hand side.
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Greg earned $32 dollars for washing cars this month. He earned twice as much for washing cars than he did for mowing lawns. Write an equation to determine how much he earned for mowing lawns.
Answer: x = 32/2
Step-by-step explanation:
Two cow gauri and bindiya are grazing in a field they are tethered uing end of ame rope fixed at point O gauri move from a to b and bindiya move from c to d total area grazed by the cow i 10 pie m q. Length of robe i 12 cm
The total distance traveled by the cows are 3.58 meters. To calculate that we need to calculate fourth area before.
It sounds like you are trying to solve a problem involving two cows grazing in a field and the area that they graze. Here is a possible solution:
First, draw a diagram to represent the situation. Let O be the point where the rope is fixed, and let A and B be the points where Gauri moves between. Similarly, let C and D be the points where Bindiya moves between. Draw the lines connecting these points to form four sides of a quadrilateral.Next, measure the lengths of the sides of the quadrilateral. Since the total area of the quadrilateral is 10 square meters, and the length of the rope is 12 cm.We can use the formula for the area of a quadrilateral to solve for the fourth side:
Area = (1/2) x (12 cm) x (fourth side)
Solving for the fourth side, we get:
Fourth side = (20 cm)/(12 cm) = 1.67 meters
Finally, add up the lengths of the four sides to find the total distance traveled by the cows:
Total distance = (1.67 meters) + (12 cm) + (1.67 meters) + (12 cm) = 3.58 meters
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What is the side side side theorem?
The side-side-side (SSS) theorem states that if three sides of one triangle are equal to the corresponding sides of another triangle, then the two triangles are congruent.
In other words, if the lengths of the sides of two triangles are the same, then the triangles must be the same shape and size.
For example, consider two triangles ABC and DEF. If we know that
AB = DE, BC = EF, and AC = DF,we can use the SSS theorem to conclude that triangle ABC is congruent to triangle DEF.
It is important to note that the SSS theorem is only applicable if the three sides of each triangle are equal in length. If the sides are not equal, the theorem does not apply and we cannot use it to prove the congruence of the triangles.
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How do you know if its discontinuous?
Discontinuity can be determined by looking for sudden changes in values or jumps in the graph of the function. If there is a break or gap in the graph, the function is discontinuous.
Discontinuity occurs when a function fails to be defined at a certain point within its domain, resulting in a sudden change in the graph of the function. Discontinuity can be determined by plotting the graph and looking for sudden changes in values or jumps in the graph. If the graph shows a break or gap, then the function is discontinuous. Discontinuity can also be determined by examining the behavior of the function at a certain point. If the function values diverge as the point is approached from either side, then the function is discontinuous at that point. Additionally, a function can be discontinuous at a point if it does not obey the rule of continuity, which is that the function's value must be equal to the limit of the function as the point is approached from both sides. If the limit does not exist at a point, then the function is discontinuous at that point.
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Need help with this equation . Asap
The measure of segments mAG, mAC, and mBC are 11.4, 16.1 and 7.1 respectively,
What is the triangle?The triangle is a geometric shape that includes 3 sides and the sum of the interior angle should not be greater than 180°
Here,
Apply Pythagoras theorem in triangle ABG,
mAG = √[7² + 9²]
mAG = √[49 + 81]
mAG = √[130] = 11.4
Apply Pythagoras theorem in triangle BGC,
mBC = √[10² - 7²]
mBC = √51
mBC = 7.1
Now
mAC = mAB + mBC
mAC = 9 + 7.1
mAC = 16.1
Thus, the segments mAG, mAC, and mBC have measures of 11.4, 11.1, and 7.1, respectively.
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following this nut 10 exam, you make yourself a giant ice cream sundae. total saturated fat for this meal is 95 grams. based on the 2020 dietary guidelines, what percent of the daily value for saturated fat does this provide? divide 855 grams by 2000 grams and multiply by 100 to find the percent daily value for saturated fat from this meal, which is 43 % (round to the nearest whole number [ > 0.5
Percent of the daily value for saturated fat provided would be 48%
What is Percent Daily Value?
Daily Values are recommendations that specify the amounts of certain nutrients that the average person should obtain each day. Daily Values are only a general guide because they are calculated for the average person who consumes a total of 2,000 calories a day.
If the total saturated fat for the meal is 95 grams, this is equal to 95,000 milligrams of saturated fat.
To find the percent daily value for saturated fat from this meal, we can use the following formula:
percent daily value = (total saturated fat / recommended daily intake) * 100
= (95,000 / 2000) * 100
= 47.5
Rounded to the nearest whole number, the percent daily value for saturated fat from this meal is approximately 48%
This means that this meal provides approximately 48% of the recommended daily intake of saturated fat.
Hence, Percent of the daily value for saturated fat provided would be 48%
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There are 14 dogs in a particular class at a dog show. blue, red, yellow, and white ribbons will be awarded to the first through fourth place finishers, respectively. in how many different ways can the ribbons be awarded?
a. 1,001
b. 6,006
c. 24,024
d. 38,416
As per the combination method, the number of ways can the ribbons be awarded is 24,024
The general formula to calculate the combination is written as,
nCr = n!/r! (n - r)!
where n refers the set or population and r refers subset of n or sample set
Here we have given that there are 14 dogs in a particular class at a dog show. blue, red, yellow, and white ribbons will be awarded to the first through fourth place finishers,
Here we need to find the number of different ways can the ribbons be awarded.
While we looking into the given question, the following details are given in it,
Total number of dogs = 14
Number of ribbons = 5
Which means that the value on n = 14 and the value of r = 5.
As per the given question we know that,
There are 14 possibilities for blue one
And then there are 14 - 1 = 13 possibilities for red ribbon.
And for the next yellow one has 12 possibilities
Then the white one has 11 possibilities.
Therefore, the total number of ways is
=> 14 x 13 x 12 x 11
=> 24024
Therefore, option (c) is correct.
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find the length of the arc of the curve from point p to point q. y = 1 2 x2, p −3, 9 2 , q 3, 9 2
As per the given equation, the length of the arc of the curve from point p to point q is 1.8973
Here we have given the equation y = 1/2 x².
Then the the length of the arc of the curve from point p to point q is calculated by using the formula,
=> [tex]\int\limits^q_p {\sqrt{1+(\frac{dy}{dx} )^2} } \, dx[/tex]
Here we have to extract the value of (x1, x2) from the given coordinates, then we get,
=> (x1, x2) = (-3, 3)
Now, we have to find the derivative of y, then we get he value as,
=> dy/dx = x
So, the length is calculated as,
=> [tex]\int\limits^3_{-3} {\sqrt{1+x^2} } \, dx[/tex]
As per the power rule of derivative, then reduced form of the equation is written as.
=> [x/√x²+1]₋₃³
When we apply the value of x as the given limit, then we get,
=> [3/√3²+1] - [(-3)/√(-3)²+1]
=> [3/√10] + [3/√10]
=> 6/√10
=> 1.8973
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When 122 is decreased by five times a number, the result is equal to the number increased by 20. What is the number?.
When 122 is decreased by five times a number, the result is equal to the number increased by 20 so the number is 17 .
Given :
Number :
A number is an arithmetic value used for representing the quantity and used in making calculations.
Let x be the number .
( 122- 5x ) = ( x + 20 )
122 - 5x = x + 20
122 - 6x = 20
122 - 20 = 6x
102 = 6x
divide by 6 on both sides
6x / 6 = 102 / 6
x = 102 / 6
x = 17
Hence the number is 17
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What is the solution to the system of equations y =- 3x 2 5x 2y 15?
The solution of the given system of equation is (-19, 55).
In the given question we have to find the solution to the system of equations:
y = -3x-2 and 5x + 2y = 15
We can solve the system of equation using the substitution method.
In substitution method we have to put the the value of one variable from one equation to the other equation.
We have to equations:
y = -3x-2...................................(1)
5x + 2y = 15.............................(2)
Now putting the value of y from the equation 1 in equation 2
5x + 2(-3x-2) = 15
Now solving the equation using the distribution method.
5x - 6x - 4 = 15
Simplifying
-x - 4 = 15
Add 4 on both side we get
-x = 19
Now the value of x is -19.
Now putting the value of x in equation 1
y = (-3)*(-19)-2
y = 57-2
y = 55
Hence, the solution of the given system of equation is (-19, 55).
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The right question is:
What is the solution to the system of equations y = -3x-2, 5x+2y=15?
What is the nature of roots of 2x² 3x 5 0?
The nature of the roots of 2x² 3x 5 0 are imaginary, as it is not possible to solve for real numbers.
To solve this equation, we first factor out the coefficients (2 and 5). Factoring out 2 gives us x² + 1.5x + 5 = 0. After that, we solve for x using the quadratic formula:
x
= -1.5 ± √(-1.5² - 4(1)(5)) / 2(1). This is reduced to x = -1.5 9.5 / 2, an imaginary number that cannot be solved using real values. This indicates that the equation's roots are fictitious.
x
= -1.5 ± √(-1.5² - 4(1)(5)) / 2(1)
x = -1.5 ± √9.5 / 2
x = -1.5 ± √(9.5)i / 2
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Population parameters are used to estimate sample statistics.
a. true
b. false
Population parameters are used to estimate sample statistics, and this is true.
Population parameters are used to describe the characteristics of a population, such as the mean, median, and standard deviation, and are used to make inferences about a population. Sample statistics, on the other hand, are used to describe the characteristics of a sample of a population. For example, a sample statistic could be the mean of a sample of people's heights.
To estimate sample statistics, population parameters must first be known. For example, the sample mean can be estimated using the population mean. If the population means are unknown, then the sample means can be estimated using the sample mean.
In conclusion, population parameters are used to estimate sample statistics, and this is true. Population parameters provide useful information about a population that can be used to make inferences about a sample. Knowing the population parameters allows researchers to make more accurate estimates of sample statistics, which in turn can be used to make more reliable inferences about a population.
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Find the simple interest on $6000 from 16 may 2010 to 9 october 2010 at 10% per annum.
The simple interest is $6,240.00.
The term simple interest refers the interest that is only calculated on the initial sum borrowed or deposited.
Here we need to find the simple interest on $6000 from 16 may 2010 to 9 October 2010 at 10% per annum.
While we looking into the given question, we know te following values,
Principal amount = $6000
Time period = 16 may 2010 to 9 October 2010
The number of days between 16 may 2010 to 9 October 2010 is
=> 146 days.
Here we have the interest for 1 year,
So, the time period is written as,
And then we have to put time into years for simplicity,
146 days / 365 days/year = 0.4 years.
And the interest rate = 10%
Here we have to convert R percent to r a decimal
r = R/100 = 10%/100 = 0.1 per year.
Now, we have to apply the values on the formula, then we get by solving our equation:
A = 6000(1 + (0.1 × 0.4)) = 6240
A = $6,240.00
Therefore, the total amount accrued, principal plus interest, from simple interest on a principal of $6,000.00 at a rate of 10% per year for 0.4 years (146 days) is $6,240.00.
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Help FAST PLEASE......................!!!!!!!!!!!!!!!11
The lines intersect to form a rectangular prism, therefore the plane that is parallel to EFG is BCD. option D
How to find similar objects?We should know that in plane geometry, parallel lines do not intersect and intersecting lines form angles at the points of intersection.
To determine the similarity of the lines, Let us consider the following lines
From the rectangular prism
EF//AB
BC//FG
GH//CD
AD//EH
Each of the lines lies on opposite side of the rectangular prism.
Also, quadrilateral ABCD ≡ Quadrilateral EFGH
In conclusion, the plane that is parallel to EFG is BCD.
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Examine the system of equations.
6x + y = −30,
36x + 6y = 24
Which statement is true about the system of equations?
After solving this system, you get a true statement.
This system has one solution.
If this system were graphed, the lines would be parallel.
The equations in this system have the same y-intercept.
Answer:
C
Step-by-step explanation:
6x + y = - 30
36/6 x + 6/6 y = 24/6
6x + y = -30
6x + y = 4
If this system were graphed, the lines would be parallel, because they have the same slope
-3x - 8y = 20
-5x + y = 19
Answer:
x=4 y=-1
Simplify:
100+43y over 3 = 19
Step-by-step explanation:
-3x-8y=20
-5x+y=19
What is the ratio in which point P 1 and 2 divides the join of a 2 and 1 and B 7 and 4?
The ratio in which P (1,2) divides AB at (2,1) and (7,4) is 1:6.
What is ratio?Ratio is the term for the proportion between two or more things in terms of number, amount, or size.
How to calculate ratio?Ratios contrast two figures by ordinarily dividing them. A/B would be your formula if you were comparing one data point (A) to another data point (B). This indicates that you are multiplying information A by information B. For instance, your ratio will be 5/10 if A is 5 and B is 10.
Given,
Point P → (1, 2)
Point A → (2, 1)
Point B → (7, 4)
Let m1:m2 be the ration
The formula that is used is:
[tex]x=\frac{m1x2+m2x1}{m1+m2} ; y=\frac{m1y2+m2y1}{m1+m2}[/tex]
Now we have been given the Point P → (1, 2), hence x = 1 and y = 2
Also, (x₁, y₁) = (2, 1) and (x₂, y₂) = (7, 4)
[tex]1=\frac{7m1+2m2}{m1+m2} ; 2=\frac{4m1+m2}{m1+m2}[/tex]
m₁ + m₂ = 7m₁ + 2m₂
0=6m1-m2
m2=6m1
1/6=m1/m2
The ratio in which P divides AB is 1:6.
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How do you solve a binomial expression?
To solve a binomial expression, use the FOIL (First, Outer, Inner, Last) method to multiply the two terms together. Then use the distributive property to simplify the expression and combine like terms.
1.Identify the two terms of the binomial expression and write them in the correct order.
2. Use the FOIL method to multiply the two terms together:
the first term of each binomial is multiplied together first.
Outer: Divide the second term of the second binomial by the first term of the first binomial.
Multiplying the first term of the second binomial by the second term of the first binomial yields the inner product.
Lastly, combine the second terms of each binomial.
3. To make the expression simpler, use the distributive property.
4. Combine like terms, if applicable.
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What is the formula for solving quadrilaterals?
Therefore, the formula for solving the area of quadrilateral is given by
area of quadrilateral = 1/2(sum of perpendicular drawn from residual two vertices).
What is quadrilateral?
A closed quadrilateral is a form of polygon with four sides, four vertices, and four angles. It is made up of four linked non-collinear points. The sum of the internal angles of quadrilaterals is always 360 degrees.
According to the given question:
When the diagonal and the sum of the lengths of the perpendiculars traced from the remaining two vertices are known,
The area of the quadrilateral can be calculated as follows:
Area of quadrilateral = (1/2) diagonal length sum of the lengths of the perpendiculars drawn from the residual two vertices.
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For a fundraiser, a group plans to sell granola bars and bottles of water at the same prices as described in Part A. The group wants the income from the fundraiser to be at least $150.Choose the inequality to show the number of granola bars x and the number of bottles of water y that must be sold.A. 1.4x + 0.75 y > 150B. 1.4x + 0.75y ≥ 150C. 1.4x + 0.75 < 150D. 1.4x + 0.75 ≤ 150
Answer:
the answer is D i think
What is the formula in getting possible zeros in rational root theorem?
The formula in getting possible zeros in rational root theorem is given as ± p / q.
According to rational root theorem if a polynomial expression which is written in descending order of the exponents and has integer coefficients, then any rational zero must be of the form ± p / q
Here, p is a factor of the constant term or the numerator and q is a factor of the leading coefficient or the denominator.
As the name implies, the rational root theorem is used to find the rational solutions to a polynomial equation . Polynomial roots or zeros are the solutions we get when we solve a polynomial equation. A polynomial does not need required rational zeros only.
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Do the one you would like please show work
Pipe will take 21.5 hours to fill tank completely.
How to solve pipes and cistern problems?A tank can be partially filled in 1 hour = 1/x if it takes x hours to fill it completely.
If the tank must be emptied in y hours, then the portion drained in an hour is equal to 1/y.
If a pipe can fill a tank and drain it in x and y hours, respectively.
When both pipes are opened simultaneously, the tank's net volume is filled in one hour using the formula (xy) / (y-x), provided y>x.
If a pipe can fill a tank and drain it in x and y hours, respectively.
When both pipes are opened simultaneously, the tank's net volume is filled in one hour using the formula (xy) / (x-y), provided x>y.
Net work completed equals the sum of all inlets' work (Sum of work done by Outlets)
Volume of tank be V
Pipe A and Pipe B together fill (1/9)V in one hour.
Pipe A fills (1/15)V in one hour.
Pipe B fills (1/9 - 1/15)V in one hour.
Solving for pipe B, we get
1/9 - 1/15
[tex]=\frac{15-9}{15*9}\\=\frac{6}{15*9}\\=\frac{2}{45}\\[/tex]
So, tank B will take total 21.5 hours to fill tank individually.
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Kardal used the trend line to predict that a man 72 inches tall would wear about a size 10. 5 shoe. What can be concluded about this prediction? check all that apply. The prediction is not reasonable. The prediction is an interpolation. No data is given in the scatterplot for a height of 72 inches, but a shoe size can still be predicted. A prediction cannot be made without the linear regression equation. A 72-inch tall man will wear a size 11. 5 shoe.
The prediction is not reasonable and The prediction is an interpolation is correct
How to use a regression calculator to make a reasonable prediction given a data table?
Kardal used the trend line to predict that a man 72 inches tall would wear about a size 10. 5 shoe.
Given data, first determine which is the independent variable, x, and which is the dependent variable, y. Enter the data pairs into the regression calculator. Substitute the value for one variable into the equation for the regression line produced by the calculator, and then predict the value of the other variable.
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