The correct response variable is the amount of pain relief.
Given that,
A tall glass of ice water, according to some, can help migraine sufferers find relief. Multiple migraine sufferers will be recruited by researchers to participate in a test. The individual will either take a placebo pill or a common painkiller when they get a migraine. Additionally, only half of each group will take the pill with water; the other half will sip on a small amount of water. The quantity of pain relief is then reported by participants.
To find : What is the response variable in this experiment.
Explanation :
Response variable or study variable, in general called as dependent variable is the variable of main focus in study. We want to study the changes in explanatory or independent variables are associated with response variable. Sometimes we want to measure the effect of predictors i.e explanatory variables on response variable.
For example in hand, we want to determine whether the drinking ice water is associated with amount of pain relief. Hence in this study, response variable is the amount of pain relief.
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Describe the end behavior of the function graphed below.
The function is decreasing at the interval (-∞, -3) ∪ (-1, 1) ∪ (3, ∞), and the function is increasing at the interval (-3, -1) ∪ (1, 3), and the minima of the given function at the point (-3, -12), and maxima at point (3,2).
What is a graph?A graph can be defined as a pictorial representation or a diagram of any function that represents data or values.
According to the given graph,
We can see that the function is decreasing at the interval (-∞, -3), then the function is increasing at the interval (-3, -1), then the function is decreasing at the interval (-1, 1), the function is increasing at the interval (1, 3), and the function is decreasing at the interval (3, ∞).
The function is decreasing at the interval (-∞, -3) ∪ (-1, 1) ∪ (3, ∞), and the function is increasing at the interval (-3, -1) ∪ (1, 3).
Thus, the minima of the given function at the point (-3, -12), and maxima at point (3,2).
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marking brainliest!! help much needed!
Find the missing value so that the line passing through the 2 points has the given slope.
(12, -12) and (7, y); slope: -3
a. 3
b. 18
c. -15
Step-by-step explanation:
y = 3
Step-by-step explanation:
Calculate the slope between the 2 points using the slope formula, then equate to - 3
m = \frac{y_{2}-y_{1} }{x_{2}-x_{1} }
x
2
−x
1
y
2
−y
1
with (x₁, y₁ ) = (12, - 12 ) and (x₂, y₂ ) = (7, y )
m = \frac{y-(-12)}{7-12}
7−12
y−(−12)
= \frac{y+12}{-5}
−5
y+12
= - 3 ( multiply both sides by - 5 )
y + 12 = 15 ( subtract 12 from both sides )
y = 3
Answer:
Step-by-step explanation:
Which angle is vertical to ∠EAD?
Please help!!!
Answer:
Step-by-step explanation:
Halie, find angle EAD.... see it? next think about the definition of vertical angles: each of the pairs of opposite angles made by two intersecting lines.
which angle is EAD an opposite pair of? ∠IAH looks like a good one.
When one function undoes or reverses another function, what can you say about the
functions?
Answer:
An inverse function is a function that undoes the action of the another function. A function g is the inverse of a function f if whenever y=f(x) then x=g(y).
Step-by-step explanation:
Scientists have calculated that the diameter of Himalia, one of Jupiter's moons, is 20 times smaller than the diameter of Earth's moon, which is 3480 km. What is the diameter of Himalia?
Which expression is NOT equivalent to 6 × 14?
6 × (10 + 4)
6 × 7 + 6 × 7
6 × 10 + 6 × 4
6 × (10 × 40)
Answer: 6 × (10 × 40)
Answer:
6 × (10 × 40)
Step-by-step explanation:
6 × 14 = 84
6 × (10 + 4) = 6 × 14 = 84
6 × 7 + 6 × 7 = 42 + 42 = 84
6 × 10 + 6 × 4 = 60 + 24 = 84
6 × (10 × 40) = 6 × 400 = 2400
A shopper bought a watermelon,a pack of napkins,and some paper plates. In his state, there is no tax on food. The tax rate on non-food items is 15 percent. The total for the three items he bought was $8.25 before tax, and he paid $0.19 in tax. How much did the watermelon cost?
Answer:
Step-by-step explanation:
the question is about 15% tax equaling 19 cents. So what amount of principle would be needed to make 19 cents worth of tax.
.19/.15=1.26666666
round up to $1.27 since we don't have parts of pennies for money.
8.25-1.27=$6.97 for the watermelon.
Which fraction is the smallest?
3/5 1/2 2/3 4/7 3/8
Find a number which is increased by 12 is two times its opposite.
N = _____
Final equation: ______
The number which when increased by 12 is two times its opposite. is
N = -4
final equation N + 12 = -2N
What is additive inverse?Additive inverse is the opposite of a number in terms of addition, this is the number that gives zero when added to the original number.
To get a result equal to 0, add the original number and the additive inverse or by simply changing the sign of the integer. On the basis of negation of the original number.
The problem says
N + 12 = -2N
N + 2N = -12
3N = -12
N = -4
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Suppose the math club is going on a field trip. Members will be riding in vans that will hold 7 people each including the
driver. More than 28 people will be going on the field trip. Do not put spaces in your answers.
Write an inequality to model this situation using V as the variable.
Solve the inequality.
What is the least number of vans needed to make the trip?
Answer: 4v so this would be the correct answer.
Genesis owns a small business selling clothing. She knows that in the last week 6
customers paid cash, 66 customers used a debit card, and 44 customers used a credit
card.
Based on these results, express the probability that the next customer will pay with
something other than cash as a percent to the nearest whole number.
The probability of the next customer paying with a debit or credit card other than cash is =94.82%
We have given,
Genesis owns a small business selling clothing.
She knows that in the last week 6 customers paid cash, 66 customers used a debit card, and 44 customers used a credit card.
we are asked to determine the probability that the next customer will pay with something other than cash as a percent to the nearest whole number
P(A)= number of favorable outcome in event A divided by the total outcome in a sample space
customers will pay through debit or credit card other than cash.
last week of customers paid cash: 6
last week of customers paid w/ a debit card: 66
last week of customers paid w/ a credit card: 44
Therefore, 6+66+44= 116
=110/116
=0.9482
= 94.82% is the probability that the next customer will pay with
something other than cash as a percent to the nearest whole number.
Hence we get the required answer.
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Write an algebraic expression for the verbal description.
The amount of acid in x liters of a 45% acid solution
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
The algebraic expression for the verbal description:
The amount of acid in x liters of a 45% acid solution is
0.45x
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
The amount of acid in x liters of a 45% acid solution.
This can be written as an expression as,
= 0.45x
We know that,
45% = 45/100 = 0.45
Thus,
The algebraic expression for the verbal description:
The amount of acid in x liters of a 45% acid solution is
0.45x
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Help pls
2 Answers and I can make brainliest whoever has the correct answer
Answer:
Step-by-step explanation:
Hope this helps :)
Answer:
1.01 g/cm³
Explanation:
The density of drink is 1.01 g/cm³ when 25 cm³ of apple juice are mixed with 15 cm³ of fruit syrup and 280 cm³ of carbonated water to make a drink with a volume of 320 cm³.
25 cm³ of apple juice are mixed with 15 cm³ of fruit syrup and
280 cm³ of carbonated water to make a drink with a volume of 320 cm³.
Let us find the mass of each drink mixed to make the new drink
mass = density × volume
mass of apple juice = 1.05 × 25
= 26.25 g
Mass of fruit syrup = 1.4 × 15
= 21 g
Mass of carbonated water = 0.99 × 280
= 277.2 g
Total mass of the drink = 26.25 g + 21 g + 277.2 g
= 324.45 g
Volume of the given drink = 320 cm³
Density of the drink = total mass of liquids/ volume
= 324.45g/320cm³
= 1.01 g/cm³
Thus, the density of drink is 1.01 g/cm³ when 25 cm³ of apple juice are mixed with 15 cm³ of fruit syrup and 280 cm³ of carbonated water to make a drink with a volume of 320 cm³.
Suraj took a slice of pizza from the freezer and put it in the oven. The pizza's temperature (in degrees Celsius) as a function of time (in minutes) is graphed. How long was each increase by 4 degrees Celsius?
A.) 1/2
B.) 1 Minute
C.) 1/4
D.) 1/3
The time taken for the increase in temperature by 4 degrees Celsius is 1/2 minute.
Suraj took a slice of pizza from the freezer and put it in the oven. The pizza's temperature (in degrees Celsius) as a function of time (in minutes) is given in the form of a graph. The coordinates of the points through which the line passes are (2, 10) and (4.5, 30). We can find the slope of the straight line. If the coordinates of two points are (x1, y1) and (x2, y2), then the slope of the passing line is given as below.
m = (y2 - y1)/(x2 - x2)
m = (30 - 10)/(4.5 - 2)
m = 20/2.5
m = 8
This means there is an increase of 8 degrees in temperature in one minute. We need to calculate the time taken for a 4-degree increase in temperature.
m = Δy/Δx
8 = 4/Δx
Δx = 4/8 = 1/2
Hence, the increase in temperature by 4 degrees Celsius took half a minute.
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-7(-4w - x + 5) Use the distributive property to remove the parentheses
Answer: -28w + 7x -35
Step-by-step explanation:
[tex]-7(-4w -x +5)\\\\= -7*-4w + (-7)*(-x) + (-7)*5= -28w + 7x -35[/tex]
Answer:
28w+7x-35
Step-by-step explanation:
How does T critical value calculator work?
The working of T critical value calculator is explained
What is t test?
t test is the test used if the sample standard deviation is known and population standard deviation is unknown.
t test is used if the sample standard deviation is known and population standard deviation is unknown.
Here, t value is calculated by the formula
[tex]t = \frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]\bar{x}[/tex] = mean of the sample
[tex]\mu[/tex] = mean of the population
s = standard deviation of sample
n = Number of samples
Now, with the help of degree of freedom (n - 1) and the level of significance, the critical value of t is to be noted from the t table. Let it be [tex]t_{critical}[/tex]
if the value of t lies between [tex]-t_{critical}[/tex] and [tex]+t_{critical}[/tex] then the null hypothesis is accepted, otherwise the null hypothesis is rejected.
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Find the value of x. Round to the nearest degree. Look at picture below
The value of x is 51°
What are trigonometric ratios?Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled.
Given a right triangle with hypotenuse = 9 and perpendicular = 7
Using sine of angle, we get,
sinx = perpendicular/hypotenuse
sinx = 7/9
x = [tex]sin^{-1}[/tex]7/9
x = 51°
Hence, The value of x is 51°
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Pls help, if multiple people answer this, I’ll give someone brainliest :D
Answer:
B . 72 you have to skip count by 12
C . 18 because 54 divide by 3 is 18 because they frame 3 houses in one week
Sorry I tried to do the rest but got confused I hope this helps u
Step-by-step explanation:
Can someone please explain this to me my exams in one day
The rate of interest half yearly is 8.25 and monthly is 1.375%.
In the given question we have to find the effective rate of intereset, if a amount of money is borrowed an interest rate of 16.5% p.a. and is compounded.
The interest rate annually = 16.5%
(a) We have to calculate rate of interest half yearly.
In a half year have 6 months and in total have 12 months. So their is rate of interest for 2 times.
So the rate of interest half yearly = 16.5%/2
The rate of interest half yearly = 8.25%
(b) We have to calculate rate of interest monthly.
As we know that in a year have 12 months.
So the rate of interest monthly = 16.5%/12
The rate of interest monthly = 1.375%
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could someone please help me? ASAP!
Answer:
$1.2
Step-by-step explanation:
If the tax is 3% then we will have to multiply the price($40) by .03
40*.03= 1.2
cesium 134 decays exponentially. the half life of cesium-134 is 2 years. suppose we have a 50mg sample. after how long after how long will only a 10 mg sample
Cesium would remain 10g after 2 years in 9.55 gram.
Define exponential decay.A process known as exponential decay is when a quantity diminishes over time at a pace that reduces proportionally as the quantity shrinks. The term "exponential decay" in mathematics refers to the process of a constant percentage rate reduction in an amount over time. It can be written as y=a(1-b)x, where x is the amount of time that has passed, an is the initial amount, b is the decay factor, and y is the final amount.
Given,
Cesium 134 decays exponentially. the half life of cesium-134 is 2 years.
The half-life of cesium is approximately 30 years.
The formula for half-life decay is A = P(1/2)t/d.
The half life is D. A Equals 9.55 gram when 10 gram and 2 years are entered into the equation.
Cesium would remain 10g after 2 years in 9.55 gram.
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At a particular restaurant, each mini hotdog has 90 calories and each pizza roll has 50 calories. A combination meal with pizza rolls and mini hotdogs is shown to have 860 total calories and 6 more pizza rolls than mini hotdogs. Write a system of equations that could be used to determine the number of mini hotdogs in the combination meal and the number of pizza rolls in the combination meal. Define the variables that you use to write the system.
The number of mini hotdogs in the combination meal is 4.
The number of pizza rolls in the combination meal is 10.
The variables that you use to write the system are x and (x + 6).
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example:
2x + 3 = 9 is an equation
We have,
Number of hot dogs = x
Number of pizza = x + 6
Hot dogs calories = 90
Pizza calories = 50
Now,
90x + 50(x + 6) = 860
Solve for x.
90x + 50x + 300 = 860
140x = 860 - 300
140x = 560
x = 560/140
x = 4
We can cross-check.
90 x 4 + 50 x 10 = 860
360 + 500 = 860
860 = 860
Thus,
The number of hot dogs is 4.
The number of pizzas is 10.
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is clinical prediction the fairest way to combine assessment information about job applicants, or are the other methods (unit weighting, rational weighting, and multiple regression) more fair?
clinical prediction is not the fairest way to combine assessment information about job applicants, but the other methods (unit weighting, rational weighting, and multiple regression) are more fair
Clinical prediction appears to have a serious shortcoming in terms of overall fairness for applicants because it is a subjective process of bringing information and hence clinical prediction is not the fairest way to combine assessment information about job applicants .
unit weighting is the simple method which add scores of each candidate at each level of assessment in order to arrive at a total score
Thus the other methods (unit weighting, rational weighting, and multiple regression) are more fair
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find the area of a rectangle 73 cm by 26 cm Help me please? I'm so confused?
Answer:
1898
Step-by-step explanation:
Multiply both numbers together to find the area.
Cone A Has same height Twice radius of cone b what is ratio of volume of cone A to volume B
i need someone who is Really Good in math
Or An Expert of Math Answer it
Please Help!!!
Cone A Has same height Twice radius of cone b what is ratio of volume of cone A to volume B therefore The ratio is 4:1
We know that,
[tex]volume of cone = \frac{1}{3}\pi (r)^{2}h[/tex]
From the question, we have
Cone A has same height of cone B
Cone A has twice radius of cone B
Ratio,
[tex]\frac{volume of cone A}{volume of cone B} = \frac{\frac{1}{3}\pi (2r)^{2}h }{\frac{1}{3}\pi (r)^{2}h} \\=\frac{4}{1}[/tex]
Divide:
Split is to divide into two or more equal sections, places, groupings, or divisions in its most basic form. To divide something simply means to provide it to a group in equal quantities or to cut it up into equal pieces. Let's imagine a diagonal divides a square into two triangles with equal areas. An integer may or may not be the result of a division operation. Sometimes the result will be expressed as decimal numbers.
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if the test scores of a class of 35 students have a mean of 75.3 and the test scores of another class of 26 students have a mean of 65.6, then the mean of the combined group is
Answer:The mean of combined group is 71.12 kg
Step-by-step explanation:
Mean of 35 students test score=75.3
Total score of 35 students=mean×test score
=35×75.3
=2635.5
Mean of 26 students test score=65=65.6
Total score of 26 students= 26×65.6
=1705.6
Mean of combined group=(Total score of 35 students+Total score of 26 student ÷Number of total students
=(12635.5+1705.6)÷61
=71.16
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The combined group's average is 71.16.
Given;
If the average test score for one class of 35 students is 75.3 while the average test score for another class of 26 students is 65.6
Mean of 35 student's test scores = 75.3
The total score of 35 students is the mean * test score
=35 * 75.3 =2635.5
Mean of 26 student's test scores = 65.6
The total score of 26 students = 26 * 65.6 =1705.6
Mean of combined group = (Total score of 35 students + Total score of 26 students) / Number of total students
= (12635.5 + 1705.6) / 61
= 71.16
Hence, the mean of the combined group is 71.16
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PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
B
Step-by-step explanation:
The rate of change is the slope. See the picture. The blue line (Function B) is steeper than the red line (Function A).
a farmer finds that if she plants 80 trees per acre, each tree will yield 55 bushels of fruit. she estimates that for each additional tree planted per acre, the yield of each tree will decrease by 2 bushels. how many trees should she plant per acre to maximize her harvest? trees
Answer:
So, she should add 13 trees per acre for maximum harvesting
Step-by-step explanation:
a farmer finds that if she plants 80 trees per acre, each tree will yield 55 bushels of fruit. she estimates that for each additional tree planted per acre, the yield of each tree will decrease by 2 bushels. how many trees should she plant per acre to maximize her harvest? trees
Let x be the number of trees per acre she adds
Total trees per acre = 80+x
Yield per tree = 55-2x
F(x) = 4400−105x−2x2
Applying differentiation,
F1 (x) = -105 – 4x
Putting F1 (x) =0, gives x = -270/4
X= -67.5
F11 (x) = -4 < 0, hence maximum at x =-67.5
Trees
80-67.5 = 13
So, she should add 13 trees per acre for maximum harvesting
Someone pls help THIS IS CONFUSIN 100 points
Answer: 13x^6+3x^4+9x^3+2x^2+13
Step-by-step explanation:
Show that diagonal EG is a line of symmetry for rhombus EFGH.
The diagonal EG is a line of symmetry for rhombus EFGH
A rhombus is a quadrilateral with equal sides. Because opposite sides of a parallelogram are equal, a rhombus is a type of parallelogram in which all sides are equal.
Given rhombus EFGH
We have to prove that diagonal EG is a line of symmetry for rhombus EFGH
According to the property of the rhombus
Four sides of EFGH are equal
So EF = EH
FG =HG
Meanwhile EG =EG(common side)
So triangle EFG = triangle EHG
The diagonal EG is a line of symmetry for rhombus EFGH
Therefore the diagonal EG is a line of symmetry for rhombus EFGH
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