Answers
Related Questions
the goalie ate half of a pizza that had a diameter of 20 inches! what was the area of pizza that she ate? what was the length of crust she ate?
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Since it’s diameter you divide it by 2 so it would 10. 10= radius, now does you multiply it by its self so 10•10= 100. Now multiply it but pie which it 3.14. 100•3.14= 314. 314 should be your answer!
Sorry if you get this wrong :( but I’m learning this and I usually get these right but best of luck! :)
A population of bacteria is growing according to the exponential model P = Cekt, where P is the number of colonies and t is measured in hours. If there are 800 colonies present after 4 hours, and the population's growth rate k = 0.65, how many colonies were present initially? [Round answer to the nearest hundredth.]
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[tex]800=Ce^{0.65(4)} \\ \\800=Ce^{2.6} \\\text{Dividing both sides by }e^{2.6} \\ \\\frac{800}{e^{2.6}}=C \\ \\59.42=C[/tex]The correct answer is 59.42.
A grocery store has three locations: Central, North, and South. The grocery store counted the number of cantaloupes sold at each of the three locations each day for a month. The table shows the mean and the mean absolute deviation of the number of cantaloupes sold each day. Which statements are correct? Select each correct answer.
The number of cantaloupes sold at North and South varied about the same amount.
The number of cantaloupes sold at Central varied less than did the number sold at North.
The number of cantaloupes sold at Central and South varied about the same amount.
The number of cantaloupes sold at Central varied more than did the number sold at South.
Store location Mean number of sales MAD Central 45 4.1 North 47 5.7 South 29 5.9
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The correct option is The number of cantaloupes sold at Central varied less than did the number sold at North.
What is the mean absolute deviation?The means absolute deviation is the average distance of each of the data points about the mean.
The below-given table shows the data of the three different stores.
Store location Mean number of sales MAD
Central 45 4.1
North 47 5.7
South 29 5.9
As we know that the mean absolute deviation shows as the average of the difference in the mean data that can occur. Therefore, it shows us the amount by which the data can deviate from its mean.
Now, if we look at the option, the only option that is correct about the given data is "The number of cantaloupes sold at Central varied less than did the number sold at North".
The statement holds true because the Mean absolute deviation for the store in the center is least, therefore, it varies the least from all the given options.
Hence, the correct option is The number of cantaloupes sold at Central varied less than did the number sold at North.
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Which is an equation of the given line in standard form?
A. -6x+5y=13
B. -6x+7y=-11
C. -6x+7y=11
D. -7x+6y=-11
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The coordinates of the points:
[tex](-3;\ -1)\to x_1=-3;\ y_1=-1;\ \left(\dfrac{1}{2};\ 2\right)\to x_2=\dfrac{1}{2};\ y_2=2[/tex]
Substitute: [tex]m=\dfrac{2-(-1)}{\frac{1}{2}-(-3)}=\dfrac{3}{3\frac{1}{2}}=\dfrac{3}{\frac{7}{2}}=3\cdot\dfrac{2}{7}=\dfrac{6}{7}[/tex]
We have: [tex]y=\dfrac{6}{7}x+b[/tex]
Substitute the coordinates of the point (-3; -1) to the equation of the line:
[tex]-1=\dfrac{6}{7}\cdot(-3)+b\\\\-1=-\dfrac{18}{7}+b\ \ \ |+\dfrac{18}{7}\\\\b=\dfrac{11}{7}[/tex]
Therefore we have:
[tex]y=\dfrac{6}{7}x+\dfrac{11}{7}\ \ \ |\cdot7\\\\7y=6x+11\ \ \ |-6x\\\\\boxed{-6x+7y=11}[/tex]
Answer: C. -6x + 7y = 11
You start a business making painted flower containers. You spend 300$ on paint and 5$ on each container. You charge 20$ for each container. How many containers do you have to sell to break even?
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300/15 = 20
Which function goes with this graph?
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A point on the graph is (3, 1). This means if we substitute x = 3 the answer must be 1.
The property of log is that [tex] log_{a}(a)=1[/tex]
This suggests, if the base of log is equal to the number for which we are finding the log, the answer must be 1.
So, in this case we have:
[tex]log_{a}(3)=1 [/tex]
Since the answer is 1, the base of log must be 3.
In the given options, only option 3rd is with base 3.
So, the correct answer is option 3.
A diner has a breakfast special. A customer can chose scrambled, fried, or poached eggs. The breakfast comes with a side of bacon, sausage, or fruit salad. The customer can choose coffee, tea, or milk. How many different combinations of eggs, side, and drink does a customer have to choose from?
Answers
So, there are 27 combinations.
A diner has a breakfast special. A customer can chose scrambled, fried, or poached eggs. The breakfast comes with a side of bacon, sausage, or fruit salad. The customer can choose coffee, tea, or milk. How many different combinations of eggs, side, and drink does a customer have to choose from?
Solution:
Number of ways the customer can choose eggs=3
Number of ways the customer can choose side=3
Number of ways the customer can choose drinks=3
So, total number of combinations for choosing eggs and side and drinks
=3(for eggs) and 3(for sides) and 3(for drinks)
=3 * 3 *3
=27
A customer has 27 combinations of eggs, side, and drink available.
What is the volume of the triangular prism ?
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The volume of the rectangular pyramid is 640 cm³.
What is the volume of a pyramid?The volume of a pyramid is [tex]\frac{1}{3} Ah[/tex] where A is the area of the base of the pyramid and h is the height.
Area of the base = area of a rectangle with dimensions 12cm*10cm
Area of the base =12*10 =120 cm²
Height of the pyramid =16cm
So, the volume of the pyramid = [tex]\frac{1}{3}*120*16[/tex] cm³
The volume of the pyramid =640 cm³
Hence, the volume of the rectangular pyramid is 640 cm³.
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13 percent of what is 78
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"what" is the unknown, so use x for what.
"of" in math usually means a multiplication.
"is" means "="
13% * x = 78
0.13x = 78
x = 78/0.13
x = 600
Answer: the number is 600
Through music we can communicate more then what can be expressed with words alone
True or false
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This is right or wrong, please anyone
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You added when you were supposed to divide.
24/30 = 0.8
I hope that this is right and sorry if I'm wrong
OFFERING 15 POINTS... Please answer all... I need help..
1. Which set of rational numbers is arranged from least to greatest? (4 points)
−0.5, -1/5 , 1/9 , 1
1, 1/9 , −0.5, -1/5
1/9 , −0.5, 1, -1/5
-1/5 , 1, 1/9 , −0.5
2. What does negative 2/3 > −1 indicate about the positions of negative 2/3 and −1 on the number line? (4 points)
negative 2/3 is located to the right of −1
negative 2/3 is located on the left of −1
negative 2/3 is located on the right of 0, and −1 is located on the left of 0
negative 2/3 is located on the left of 0, and −1 is located on the right of 0
3. Which inequality best represents that ice cream at −3°C is cooler than ice cream at 1°C? (4 points)
−3°C > 1°C
−3°C < 1°C
1°C > 3°C
1°C < −3°C
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2. negative 2/3 is located to the right of −1
3. −3°C < 1°C
_____
It might help your understanding to spend a little time looking at number lines with positive and negative numbers and fractions marked on them.
A college entry exam has 38 questions worth 200 points. The test consists of multiple-choice questions, x, worth 4 points each and essay questions, y, worth 10 points each. Which system of equations can be solved to find the number of multiple-choice questions on the test?
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There are no options listed in the question to choose from, but the equations should look like the following:
x= # multiple choice questions
y= # essay questions
QUANTITY EQUATION:
x + y= 38
VALUE EQUATION:
4x + 10y= 200
If we solved these two equations by elimination or substitution, we would find the number of multiple choice (x) and the number of essay (y) questions on the test.
ANSWER: x + y= 38; 4x + 10y= 200
Hope this helps! :)
Answer:
Let's use the variables x and y to represent the number of multiple-choice and essay questions on the test, respectively.
The total number of questions is 38, so we can write:
x + y = 38
The total number of points is 200, so we can write:
4x + 10y = 200
This gives us a system of equations:
x + y = 38
4x + 10y = 200
We can solve this system of equations to find the number of multiple-choice questions on the test.
give the length and width in whole inches of three different rectangles that each have an area of 48 in. squared
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The reason is that to find the area of a rectangle you multiply two dimensions.
2 in x 12 in
3 in x 8 in
4 in x 6 in
On all these either one could be the length and the other the width.
Simplify the mathematical expression.
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you need to count all of the loaves of bread in the front area . there are 22 loaves of white bread, 17 loave of wheat bread, and 19 gourmet breads.what is the total number of loabes?
Answers
36-22=14
the answer is 14
given f(x)=6x+2 and g(x)=x^3 what is f(x) x g(x)?
a. 6x^4+2
b. 8x^2
c. 6x^4+2x^3
d. 6x^3+2
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Alternative C
Suppose q and r are independent events, and P(Q)= 0.39, P(R)= 0.85. Find P(q and r)
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P (q and r) = 0.3315
Explanation:
We are given that:
P (q) = 0.39
P (r) = 0.85
Since the two events are independent, therefore, the formula that we will use to get P (q and r) is as follows:
P (q and r) = P (q) * P (r)
Based on the givens:
P (q and r) = 0.39 * 0.85 = 0.3315
Hope this helps :)
Answer:
0.3315
Step-by-step explanation:
Lori passes 80% of her tests. In the next week, Lori has 4 tests. She wants to determine the probability that she passes all 4 of the tests.
Which simulation design has an appropriate device and a correct trial?
A) Let Heads represent Lori passing a test and Tails represent Lori failing a test. Flip the coin four times.
B) Roll a die letting 1-5 represent Lori passing a test and 6 represent Lori failing a test. Roll the die four times.
C) Spin a spinner that is split up into 5 sections, where 4 sections are a success of passing a test. Spin the spinner four times.
D) Using a random digits table select one digit numbers where 0-8 is a passing grade and 9 is a failing grade. Select four digits.
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Answer: C)
Step-by-step explanation:
The owner of a bookstore predicts that 30% of the books she sells each week are self-help books. To test this prediction, the owner randomly selects 150 books out of the total number of books sold for a week and records the type of each book. The table shows the results of samples taken for 2 separate weeks. Sample Fiction History Cooking Self-help Total week 1 50 29 37 34 150 week 2 55 31 34 30 150 Based on these samples, is the owner's prediction correct? Select from the drop-down menus to correctly answer the question. The owner's prediction is . Based on the samples, about of the books sold each week are self-help books.
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34 out of the 150 sold in week 1 were self-help books.
34 out of the 150 sold in week 2 were self-help books.
This gives us 68 self-help books out of 300 books sold.
68/300 = 0.2267 ≈ 0.23 = 23%
Based on the samples, the owner's prediction of 30% is not correct; approximately 21.34% of the books sold each week are self-help books.
The bookstore owner predicts that 30% of the week's book sales are self-help books. To evaluate this prediction, we need to look at the number of self-help books sold in the samples provided for two separate weeks. In week 1, 34 out of 150 books sold were self-help books, which is 22.67%. In week 2, 30 out of 150 books sold were self-help books, which is 20%. To determine the average percentage of self-help books sold over the two weeks, we average these two percentages: (22.67% + 20%) / 2, which gives us 21.34%.
I was sick the day that the class went over how to do this and I don’t know how to do it.
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Find the Distance, d, across the lake
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You have to use similar figures to work this out.
15 ft / 8 ft has to equal d ft / 6 ft
So, you divide 15 by 8, which equals 1.875
You then times 1.875 by 6 = 11.25
The Distance, d, across the lake is 26.25 feet.
Similar TrianglesWhen two triangles have all the corresponding angles equal to each other, then their sides are in a ratio.
Given to us,AB = 8 feet,
BC = 15 feet,
BP = 6 feet,
PQ = d,
AP = AB + BP = 8 + 6 = 14 feet
In the figure, [tex]\triangle ABC \sim \triangle APQ[/tex]
[tex]\dfrac{BC}{AB}=\dfrac{PQ}{AP}[/tex]
[tex]\dfrac{15}{8}=\dfrac{d}{14}[/tex]
[tex]d = \dfrac{15\times 14}{8}[/tex]
[tex]d = 26.25[/tex]
Hence, the Distance, d, across the lake is 26.25 feet.
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which of the following functions is continuous between x=-3 and x=0? choices on attachment
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A: f(x) = (-x + 1)/(x + 2)
Now we don't actually need to know what the graph of this function looks like to see which values it is continuous for, instead we should look at which values of x will make this function undefined - in this case that would be x = -2. The reasoning behind this is that a number divided by 0 would be undefined, so when we search for which value of x would make the denominator of the equation 0, we get:
x + 2 = 0
x = -2
Since x = -2 is within the interval [-3, 0] we cannot say the function is continuous over this interval
B: f(x) = -2/(x + 1)
Using the same method as above we get:
x + 1 = 0
x = -1
x = -1 is again within the interval [-3, 0] and so the function is not continuous within this interval
C: f(x) = 3x/(x - 2)
x - 2 = 0
x = 2
x = 2 is outside the interval of [-3, 0] and so the function is continuous within this interval and C is the correct answer.
Just for the sake of it however we can look at D as well:
D: f(x) = 1/(2x + 1)
2x + 1 = 0
x = -1/2
-1/2 is within [-3, 0] and so D is not continuous over this interval
A coach randomly sampled players from two different cities to determine the heights of the players. This table shows the results in inches.
City A 63 60 70 66 70 73 78 73 69 75
City B 67 73 75 73 69 78 76 74 72 74
Which conclusions can you draw about the heights of the players from the two cities?
Select each correct answer.
On average, the players in City A are a few inches taller than the players in City B.
On average, the players in City A are a few inches shorter than the players in City B.
On average, the players in the two cities are about the same height.
The heights of the players in City A are more variable than the heights of the players in City B.
The heights of the players in City A are less variable than the heights of the players in City B.
The heights of the players in the two cities vary by about the same amount.
Answers
city A:
63 + 60 + 70 + 66 + 70 + 73 +78 + 73 + 69 + 75 = 697
697 / 10 = 69.7
shortest is 60, tallest is 78, difference = 78 -60 = 18
city b :
67+73+75+73+69+78+76+74+72+74 = 731
731 / 10 = 73.1
shortest is 67, tallest is 78, difference = 78-67 = 11
answers:
On average, the players in City A are a few inches shorter than the players in City B.
and
The heights of the players in City A are more variable than the heights of the players in City B.
Answer:
On average, the players in City A are a few inches shorter than the players in City B.
Step-by-step explanation:
i took the test hope this helps
A cone has a volume of about 235.5 cubic centimeters. If the height is 9 centimeters what is the radius of the cone?
Answers
hHeight: 9
VVolume: 235.5
How much times does 30 go into 870
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Which statement best describes the effect of replacing the function f(x)=2^x-2 with the function g(x)=2^x+3
A.) The graph shifts 1 unit up
B.) The graph shifts 5 units left
C.) The graph shifts 1 unit right
D.) The graph shifts 3 units right
Answers
f (x) = 2 ^ (x-2)
g (x) = 2 ^ (x + 3)
Horizontal translations
Suppose that h> 0
To graph y = f (x + h), move the graph of h units to the left.
We have then:
f (x + 5) = 2 ^ ((x + 5) -2)
g (x) = 2 ^ (x + 3)
Answer:
B.) The graph shifts 5 units left
ANSWER ASAP WILL MARK AS BRAINLEST
A point is selected at random inside the given figure. What is the probability the point will be in the region labeled B? Enter your answer, as a fraction in simplest form, in the box. P(B) = The figure is a rectangle that is made up of three rectangles and one square. The rectangles are labeled A, B, and D, and the square is labeled C. Rectangle A is in the upper left portion of the large rectangle. The left side of rectangle A is labeled 5 inches and it is part of the left side of the large rectangle. Rectangle B is in the lower left portion of the large rectangle below rectangle A. The lower side of rectangle B is labeled 3 inches and makes up a part of the lower side of the large rectangle. Rectangle D makes up the right side of the large rectangle and is to the right of rectangle A. The upper side of rectangle D is labeled 3 inches and makes up a part of the upper side of the large rectangle. The right side of rectangle D makes up the entire right side of the large rectangle. Square C lies below rectangle A and between rectangles B and D. The lower side of square C is labeled 4 inches and makes up part of the lower side of the big rectangle. The right side of square C is also labeled 4 inches.
Answers
The area of A is given by 5(7) = 35 in².
The area of B is given by 3(4) = 12 in²
The area of C is given by 4(4) = 16 in²
The area of D is given by 3(9) = 27 in²
The total area is given by 35+12+16+27 = 90 in²
The probability of B is given by 12/90 = 2/15.
HELP WITH THE CORRECT ANSWER
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10 points and brainliest to best answer
plz answer in this form
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top left:
top right:
bottom left:
bottom right:
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Top Right: Rate of change is greater than 1.
Bottom Left: Rate of change is less than 1.
Bottom Right: Rate of change is greater than 1.
Look at x. The number behind the variable is the rate of change.
Have a nice day! ♪