Answer:
B) Elias sold one-fourth the number of books Lena sold.
Step-by-step explanation:
How is this the answer? Well after I looked at the problem again, I realized what I needed to do. I needed to do 4,832*1/4 which is 1208.
I got this from the line that says "Elias sold 4,832 times one-fourth copies"
I hope this helps!!!!
A water tank initially contained 57 liters of water. It is being drained at a constant rate of 2.5 liters per minute.
How many minutes have passed m when the tank contains 35 liters? Round go the nearest tenth
Answer:
8.8 minutes
Step-by-step explanation:
first we figure out how many liters are being lost
57 - 35 = 22
then divide that by 2.5
22 / 2.5 = 8.8
8.8 minutes
2. If AJKL AQRS, find each missing value.
R
J
3x-1
58°
32
(4z + 3)°
K
L
27
Q
y + 10
87⁰
14
S
X=
Y=
Z=
4
Answer:gat big
Step-by-step explanation:
Write the standard form of the quadratic function whose graph is a parabola with the given vertex and that passes through the given point. (Let x be the independent variable and y be the dependent variable.)
Vertex: (2, 3); point: (0, 2)
[tex]~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\begin{cases} h=2\\ k=3 \end{cases}\implies y=a(x-2)^2 +3\hspace{5em}\textit{we also know that} \begin{cases} x=0\\ y=2 \end{cases} \\\\\\ 2=a(0-2)^2 + 3\implies -1=a(-2)^2\implies -1=4a\implies \cfrac{-1}{4}=a \\\\\\ ~\hfill {\Large \begin{array}{llll} y=-\cfrac{1}{4}(x-2)^2 + 3 \end{array}} ~\hfill[/tex]
It takes a bus 1 hour and 30 minutes to travel 42 miles.
Calculate the average speed of the bus in mph.
If your answer is a decimal, give it to 1 d.p.
28 mph is the average speed of the bus in mph.
What is speed?
The speed of a change in an object's location in any direction. The distance traveled relative to the time it took to travel that distance is how fast something is moving.
Meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph) are the most popular speed units (mph). The distance an object covers in a given amount of time is its speed. Speed = distance x time is the speed formula. The meter per second, also known as the m/s or ms-1, is the SI unit of velocity.
time = (1+ 1/2)hr = 3/2 hr = 1.5 hr
distance = 42 miles
average speed = total distance/total time
42/1.5 = 28 mph
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if f(a)=a²-1 find f(5)
Answer: 24
Step-by-step explanation:
A=5 so F(x)=5^2-1
F(x)=24
Find the sum of 3x + 2 and 8x
Let F be any nonconstant vector field of the form F = f (x) i + g (y) j + h (z) k and let G be any nonconservative vector field of the form G = f (y, z) i + g (x, z)j + h (x, y) k. Indicate whether the following statements are true or false by placing ''T'' or ''F'' to the left of the statement. 1. G is incompressible 2. F is irrotational 3. G is irrotational 4. F is incompressible
1. G is incompressible- True
2. F is irrotational- True
3. G is irrotational- False
4. F is incompressible- False
Divergence and Curl In Mathematics, divergence is a differential operator, which is applied to the 3D vector-valued function. Similarly, the curl is a vector operator which defines the infinitesimal circulation of a vector field in the 3D Euclidean space .
So if we calculate for F:
F has a divergence potentially
divF = df/dx + dg/fy + dh/dz
But curl(F )= 0(all cross derivatives df/dy df/dz, dg/dx etc = 0)
For G
G has zero divergence.
divG = df/dx + dg/fy + dh/dz = 0 + 0 + 0 = 0
But it may have a curl.
curl(G) = df/dy may be non-zero
df/dz, dg/dx etc may all be non-zero
Now, we also know that if the divergence is zero, the vector field is incompressible and if the curl is zero, the vector field is irrotational, that is,
div = 0 = incompressible and
curl = 0= irrotational
Thus,
1. G is incompressible- True
2. F is irrotational- True
3. G is irrotational- False
4. F is incompressible- False
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what IS 1/2 as a percent help pls SOS
Answer:
50%
Step-by-step explanation:
numerator divided by denominator
1 divided by 2 = .5
.5 x 100 = 50%
Maria is making an apple pie. She needs 1/4 cup of sugar for each pie Maria has 2 1/2 cups of sugar how many pies can she make
The number of cups she can make is 2 cups
How to determine the number of cups she can makeFrom the question, we have the following parameters that can be used in our computation:
Cups of sugar needed = 1/4
Cups of sugar available = 1/2
Assume there exist a proportional relationship between the cups
The number of cups she needs can be calculated using the following equation
number of cups = (1/2)/(1/4)
Evaluate the quotient
number of cups = 2
Hence, the cups is 2 cups
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An initial balance of $4,000 grows at a rate of 12.3% compounded quarterly. What is the balance after 5 years?
Answer:
7330.36
Step-by-step explanation:
A = P (1+i)^n
n = 4×5 = 20
i = 0.03075
12.3% / 4 = 3.075 × 1/100
= 0.03075
A = 4000 ( 1+ 0.03075 ) ^20
= 7330.36
Simplify. Show your work. Circle your answer.
2√10·5√12
Simplify the [tex]2\sqrt{10}[/tex] · [tex]5\sqrt{12}[/tex] we will get 20 · √30.
What do you mean by exponent and radicals?
Exponents are a convenient way of describing repeated multiplication of the same number. Radicals include the use of radical characters √
These are sometimes called surdos. The exponent is the power p of an expression of the form [tex]a^{p}[/tex]
The process of raising a base number to a given power is called exponentiation. (where a ≠ 0)
Given:
[tex]2\sqrt{10}[/tex] · [tex]5\sqrt{12}[/tex]
= (2 × 5)· [tex](\sqrt{10}\times \sqrt{12)}[/tex]
= 10 · [tex]\sqrt{120}[/tex]
= 10 · 2 · [tex]\sqrt{30}[/tex]
= 20 · √30
Therefore, [tex]2\sqrt{10}[/tex] · [tex]5\sqrt{12}[/tex] = 20 · √30
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A store bought a sofa wholesale for 200 and marked it up 15% when the sofa did int sell they reduced the price 15% show why the current price is not 200
Answer:
The current price of sofa is $195.50.
Step by Step explanation:Cost price of the sofa for the store = $200
Now, the store marked it up 15%.
So, marked price of sofa = $200 + 15% of $200
=200 + 30
=$230
Now, it is given that the sofa could not sell at this price. So, the store reduces its price by 15% now.
So, current price of sofa = $230 - 15% of $230
= 230 - 34.5
=$195.5
So, the current price of the sofa is $195.50.
ING
DO
S
DO
Here's the revenue and expenses for the month. Calculate whether Mia had a profit or loss.
REVENUE
DOG FOOD
$3,500
CAT FOOD
$2,100
PET TREATS
$1,200
PET SUPPLIES $2,750
TOTAL
$9,550
JANUARY ACCOUNTS
FIXED EXPENSES
RENT
$2,000
SALARIES
$2,000
UTILITIES
$1,000
PRODUCT STOCK $4,000
TOTAL
$9,000
$ X
VARIABLE EXPENSES
NEWSPAPER AD $200
TOTAL
$200
ENTER MIA'S TOTAL PROFIT/LOSS FOR THE MONTH IN THE BOX BELOW, THEN CLICK SUBMIT.
SUBMIT
determine the equation of the line of the line of best fit from the data in the table on the right. x 4 5 6 7 10 y = 14 14 17 19 26
The equation for the line of best fit from the given data, will be y = 2.12 x + 4.42.
How to find the line of best fit ?The line of best fit would be the line that has an equal number of points above it, as the number of points beneath it.
Going by this definition, two points that would be on the line are (6, 17) and ( 7, 19 ).
The slope of this line would be:
= ( Y2 - Y1 ) / ( X 2 - X1)
= ( 19 - 17 ) / (7 - 6 )
= 2.12
The y intercept would be:
y = mx + c
19 = 2.12 (7 ) + c
c = 4.42
The equation of the line of best fit is then :
y = 2.12 x + 4.42
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4-1 3/5 write as a mix number in simplest form
Answer:
Step-by-step explanation:
17/5
Answer:
2 and 2/5
Step-by-step explanation:
Enter numbers to evaluate ‐6−13. ‐6−13= ‐6 + = Enter numbers to evaluate ‐6−(‐13). ‐6−(‐13)= ‐6 + =
The given expression evaluates to -19.
What is a expression? What is a mathematical equation? What do you mean by domain and range of a function?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. For any function y = f(x), Domain is the set of all possible values of [y] that exists for different values of [x]. Range is the set of all values of [x] for which [y] exists.We have the following expression -
- 6 - 13
The given expression evaluates to -
x = - 6 - 13
x = - 19
Therefore, the given expression evaluates to -19.
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Help me please
dont even need a full explanation just answer
The correct option C: -4 ≤ x ≤ -2, are the intervals in which the graph is constant.
Explain the term constant function?An algebraic expression known as a linear expression has terms that are either constants or variables raised to first power. Alternatively put, no of the exponents could be greater than 1.A linear function with a slope of 0 is known as a constant function. The function's value will remain constant regardless of the value you select for "x." A constant function has a graph that is a horizontal line and through y-intercept, "b." Example A's graph is indeed a horizontal line that passes through y = 4 since b is equal to 4.So, from the shown graph, the horizontal line have the constant function which lies in the intervals -4 ≤ x ≤ -2.
Thus, in the intervals -4 ≤ x ≤ -2, the function is constant.
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The size of a population is modeled by the function P that satisfies the logistic differential equation dP/dt=(1/10)P - (1/5000)P^2 , where t is measured in months and P (0) = 50. What is the size of the population at the moment when the population is growing most rapidly? A. 50 B. 250 C.500 D. 2500
The correct answer is A.
500 is the size of the population at the moment of maximum growth.
Given data:
To find the size of the population at the moment when the population is growing most rapidly, we need to determine the maximum value of the derivative dP/dt.
Given the logistic differential equation [tex]\frac{dP}{dt} = (\frac{1}{10})P - (\frac{1}{5000})P^2[/tex], find the derivative by taking the derivative of each term separately:
[tex]\frac{dP}{dt} = (\frac{1}{10})P - (\frac{1}{5000})P^2[/tex]
To find the critical points where the derivative is zero or undefined, set dP/dt equal to zero:
[tex](\frac{1}{10})P - (\frac{1}{5000})P^2=0[/tex]
Simplifying:
[tex](\frac{1}{10})P= (\frac{1}{5000})P^2[/tex]
[tex]10P^2=5000P[/tex]
Dividing both sides by P and rearranging:
[tex]10P(P-500)=0[/tex]
This equation has two solutions: P = 0 and P = 500.
To determine which solution corresponds to the moment when the population is growing most rapidly, examine the second derivative. Taking the second derivative of the logistic differential equation, we have:
[tex]\frac{d^2P}{dt^2} = \frac{1}{10} - \frac{2}{5000}P[/tex]
Evaluating the second derivative at P = 0 and P = 500, we get:
[tex]\frac{d^2P}{dt^2}_{P=0} = \frac{1}{10} - \frac{2}{5000}(0)[/tex]
[tex]\frac{d^2P}{dt^2}_{P=0}= \frac{1}{10} > 0[/tex]
[tex]\frac{d^2P}{dt^2}_{P=500} = \frac{1}{10} - \frac{2}{5000}(500)[/tex]
[tex]\frac{d^2P}{dt^2}_{P=0}= -\frac{1}{10} < 0[/tex]
Since the second derivative is positive at P = 0 and negative at P = 500, the moment when the population is growing most rapidly occurs at P = 500.
Hence, the size of the population at the moment when the population is growing most rapidly is 500.
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“According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answer to three decimal places, for example: 0.123]”
A probability is a numerical representation of the likelihood or chance that a specific event will take place.
How to find the probabilities?12% of peanut M&M’s = brown
15% = yellow
12% = red
23% = blue
23% = orange
15% = green
Here, Probability of an event is represented as P
a) P(not green) = 100% - 15%
= 85%
= 0.85
b) P(yellow or red) = 15% + 12%
= 27%
= 0.27
c) P(three blue) = 0.23*0.23 *0.23
= 0.012 (rounded to 3 decimal places)
d) P(not green if you choose 6 )= [tex](0.85)^{6}[/tex]
= 0. 377
e) P(at least 1 green if you choose 6 ) = 1 - 0.377
= 0.623
What is probability?Probability is the ability to happen. The subject of this area of mathematics is the occurrence of random events. From 0 to 1 is used to express the value. To forecast how likely occurrences are to occur, probability has been introduced in mathematics. The degree to which something is likely to happen is essentially the definition of probability. This is the fundamental theory of probability, which is also applied to the probability distribution, and from which you will discover the likelihood of results for a random experiment. We must first determine the total number of outcomes in order to calculate the probability that a single event will occur.To learn more about probability, refer:
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when an article is sold for 1200 there is 10% profit at what price should it be sold to gain 20%
Answer:
1309.10
Step-by-step explanation:
1200 = 110%
(1200/110)*120 = 1309.10
select the spreadsheet formula that would correctly calculate the average (mean) of the following values: 25, 50, and 75.
The spreadsheet formula that would correctly calculate the average (mean) of the given values is: (25 + 50 + 75) / 3 = 50.
What is an average?An average is a single number taken as representative of a list of numbers, generally the sum of the numbers divided by how many numbers are in the list (the arithmetic mean).
What is the formula to calculate the average?The formula to calculate the average of given numbers is equal to the sum of all the values divided by the total number of values. Average = Sum of Values / Number of Values.
So, in this case:
Values: 25, 50, 75
Number of Values: 3
Thus, the average:
Sum of Values / Number of Values = (25 + 50 + 75) / 3 = 50
Hence, the spreadsheet formula that would correctly calculate the average (mean) of the given values is: (25 + 50 + 75) / 3 = 50.
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Create a slope intercept equation with given information (3,1) m =0
Answer:
y = x - 2
Step-by-step explanation:
Since m = 0, what we have so far is y=x+b
We have a point, which is (3,1)
Substitute the x and y with the x and y values in the coordinate point to solve for b (y-intercept).
1=3+b
1-3=3+b-3 undo the 3 by subtracting
-2 = b
y = x + -2 simplify
y = x - 2
An isosceles triangle has an angle that measures 140°. What measures are possible for
the other two angles? Choose all that apply.
Recommendations
15⁰
70°
45°
20•
The possible value of other two angles will be 20 degree.
What are the types of triangle?
Basically, there are six different types of triangles in terms of lengths and measurements of triangle lines or angles. The sum of all interior angles of a triangle is always 180 degrees. This is called the angular summation of the triangle. Depending on the length of the sides, triangles can be divided into three types:
scale
Isosceles
equilateral
It is given that an isosceles triangle has an angle that measures 140°
We know that two sides of isosceles triangle are equal and by the property of triangle we know that angle opposite to equal sides are equal therefore remaning two angles of isosceles triangle will be equal.
Let the angles be x
By angle sum property of triangle
x + x + 140 = 180
2x = 180 - 140
2x = 40
x = 40/2 = 20
Therefore, the possible value of other two angles will be 20 degree.
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Which inequality has the graph shown below?
The inequality is y > 2x-3
option C is correct
What is inequality in math?
In Algebra, an inequality is a mathematical statement that uses the inequality symbol to illustrate the relationship between two expressions. An inequality symbol has non-equal expressions on both sides. It indicates that the phrase on the left should be bigger or smaller than the expression on the right, or vice versa. Literal inequalities are relationships between two algebraic expressions that are expressed using the inequality symbols.
The line intersects the y- axis at point (0,-3)
i.e., The y-intercept =-3
We know that,
Equation of lime, y= mx + b
b: y-intercept
m: Slope of the line
Slope of the line,
m = 0-(-3)/3/2 = 2
m ⇒ 2
∴ Equation of line, y = 2x - 3
The shaded are is above the line, and line is represented with dotted lines,
hence the inequality is,
y > 2x - 3
Hence, option C is correct
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Dr. Arman has 1,000
vitamin samples to give his
patients. The number of
samples remaining
decreases by 18% each
week. Which equation
represents the remaining
number of samples after x
weeks?
1000 - 180x represents the remaining number of samples after x weeks.
What is exponents?
Exponentiation could be a calculation, written as bⁿ, involving 2 numbers, the bottom b and also the exponent or power n, and pronounced as "b to the n".
Main body:
Consider what is actually happening in the question.
You begin with 1000 samples, after it decreases to
=1000-18% of 1000
= 820
You can see the pattern shows that the number of samples decreases 18% every week ,1000-18% of 1000 - 18% 0f 1000.
= 1000 - 180x where x denotes number of weeks.
Hence 1000 - 180x represents the remaining number of samples after x weeks.
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Elvia has a bag of snack mix that contains 5 cereal pieces, 4 peanuts, 5 pretzels, and 1 bagel chip. Suppose that she is equally likely to pick any individual object from the bag. What is the probability that Elvia will randomly pull a pretzel from the bag?
Answer: 33%
Step-by-step explanation: a third of the items in the bag are pretzels.
Which statement about Shawn’s line is true?
The slope of the line is 1/3
The y-intersect of the line is (4,0)
The y-interpect means Shawn ran 4 laps at week 0
The slope represents the average number of weeks it is Shawn to run laps
The slope represents the average number of weeks it is Shawn to run laps is true about Shawn's line.
Define slope.The ratio of the "vertical change" to the "horizontal change" between (any) two unique points on a line is used to compute slope. The ratio can also be written as a quotient ("rise over run"), which produces the same number for every two distinct points on the same line. A declining line has a negative "rise." The line might be useful, as determined by a road surveyor, or it might appear in a diagram that represents a road or a roof as a description or a design.
Given,
Graph to show number of taps he is scheduled to run a week.
True statement is,
The slope represents the average number of weeks it is Shawn to run laps.
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PLEASE HELP AGAIN I STILL NEED TO GET THESE DONE
Answer:
........................
4x - 8y = -4
-2x + 8y = -2
Solve by elimination
Answer:
X=1 Y=0
Step-by-step explanation:
Multiply the second equation (-2x + 8y = -2) by 2 in order to get -4x+16y=-4.
Using this equation, you can eliminate the x
4x - 8y = -4
-4x+16y=-4.
=
8y=0
y = 0
Now, knowing that y=0, plug y into the second equation:
-2x+8(0)=-2
simplify
-2x=-2
lastly, divide both sides by -2
x=1
1/2 of the animals at the shelter are cats. If there are 318
animals at the shelter, how many are cats?
Answer:
159
Step-by-step explanation:
To find half of an amount, multiply the amount by 1/2 which is the same as dividing the amount by 2.
318 × 1/2 =
= 318 ÷ 2
159
-----------------------
2 | 318
- 2
------------
11
- 10
-------
18
- 18
------
0
318 × 1/2 = 318 ÷ 2 = 159