The diameter of a circle is 40 m. Find the area of the circle in terms of π. 40π m2 80π m2 400π m2 160π m2
Answers
Answer:
\(400\pi m^2\)
Step-by-step explanation:
If the diameter is 40, the radius is 20.
The area is 400π
Related Questions
how do you find the rate of change in a table or graph that represents a linear equation?
- Find the change of x
- Multiply the change of y by the change of x
- Find the change of y
- Divide the change of y by the change of x
- Subtract the change of y from the change of x
- Add the change of y to the change of x
Answers
Answer:
Find the rate of change represented in each table or graph.
Step-by-step explanation:
(08.03 HC)
Megan wants to know if the number of words on a page in her English book is generally more than the number of words on a page in her math book. She takes a random sample of 25 pages in each book, then calculates the mean, median, and mean absolute deviation for the 25 samples of each book.
She claims that because the mean number of words on each page in the English book is greater than the mean number of words on each page in the math book, the English book has more words per page. Based on the data, is this a valid inference? (1 point)
Group of answer choices
A) Yes, because the mean is larger in the English book.
B) No, because the mean is larger in the English book.
C) No, because there is a lot of variability in the English book data.
D) Yes, because there is a lot of variability in the English book data.
Answers
Answer:
the answer is A
Step-by-step explanation:
A movie-theater employee notes an inverse relationship between the theater's popcorn sales and its nacho sales. On a given night, the theater makes $1,512 from popcorn sales and $1,584 from nacho sales. If on the next night the employees sell $1,848 of popcorn, how much is earned from nachos
Answers
Answer:
$1,920
Step-by-step explanation:
$1,848 minus $1,512 equals $336
$336 plus $1,584 equals $1,920
There is your answer
Explanation:
1512. 1848
——- = ———
1584. x
Cross multiply and divide
(1848x1584)/ 1512
1 1/2 times x = 2 3/4
PLSSSS HELP
Answers
Answer: 338
Step-by-step explanation: Spelled result in words is thirty-three eighths (or four and one-eighth).
how can you convert among fractions, decimals, and percents
Answers
Answer:
Step-by-step explanation:
Changing Percents to Decimals
The word percent means "per 100." 20% means 20 out of 100, or 20/100. 67% means 67 out of 100, or 67/100. So to change a percent to a decimal, you simply divide the percentage number by 100. When you divide by 100, the decimal just moves over 2 places to the left.
Changing Percents to Fractions
Remember, the word percent means "per 100." This means you can change a percent to a fraction by dividing by 100. Don't stop here though, make sure to simplify the fraction if possible. Look to see if the numerator and denominator can be divided by the same number.
Changing Decimals to Fractions
First, figure out the place value of the last digit on the right. Is it in the tenths place? Hundredths? Thousandths? Use the place value to write the decimal as a fraction over 10, 100, 1000, etc. Then simplify the fraction if possible.
Remember, the first place to the right of the decimal is the tenths place. The second place is the hundredths, then thousandths, ten thousandths, and so on.
A fraction to a percent multiply the fraction by 100 and reduce it
A decimal to fraction
A decimal to percent
A percent to a decimal
A percent to a fraction
y = f(x). Replace, in the following order: x with – 1/5x,
x, x with x – 1, and y with
1/3y. Describe the transformation in terms of the function and in terms of its effect on the graph.
Answers
Answer:
y = 3f(-1/5x + 1/5)
The function is
vertical stretched by a factor of 3reflected across y-axishorizontal stretched by a factor of 5horizontal translated to the left 1/5 unitsStep-by-step explanation:
Starting with: y = f(x)
Replacing x with -1/5x: y = f(-1/5x)
Replacing x with x - 1: y = f(-1/5(x - 1)) = f(-1/5x + 1/5)
Replacing y with 1/3y: 1/3y = f(-1/5x + 1/5) or y = 3f(-1/5x + 1/5)
The transformation:
kf(x) vertically stretches the function by a factor of k (here k is 3) f(-x) reflects the function across y-axisf(bx) horizontally stretches the function by a factor of 1/b (here b is 1/5)f(x + c) horizontally translates the function left c units (here c is 1/5 units)Sarah wants to predict how many t-shirts your homeroom will sell. She wants to compute the mean number of T-shirts sold by the other homerooms to do this.
Explain how the other homerooms' data support David's claim.
PLEASE HELP QUICK. THIS IS A TEST.
Answers
u can add 10 plus 8 u can get 18 or if u get other number u wrong
I realised that there is a lack of information in the question. Please provide so we can guide you.
Please mark this brainliest thank you :)
Pls help ASAP! Screenshot
Answers
Answer:
13/25
Step-by-step explanation:
probability of an event = # times event has happened / total number of events
probability of someone liking potato chips or pretzels = # of people who like potato chips or pretzels / # total number of people
# of people who like potato chips or pretzels = # people who like potato chips + # people who like pretzels (this works because the two groups don't overlap)
(12+14)/50 = 26/50 = 13/25 = B
(-3)to the 4th power < (-4)to the 3rd power or (-3)to the 4th power > (-4)to the 3rd power or (-3)to the 4th power = (-4)to the 3rd power
Answers
Answer:
not sure
Step-by-step explanation:
PLZ PLZ PLZ help me will give BRAINLIEST to best answer
Answers
Answer:
The system has a unique solution:
(x,y) = (1,1)
Answer:
the system has a unique solution
Step-by-step explanation:
jhjbhbbjbjb
The Aspen Ski Resort has started to keep track of the number of skiers and snowboarders who bought season passes. The ratio of the number of skiers who bought season passes to the number of snowboarders who bought season passes is 3:5. If 1,250 more snowboarders bought season passes than skiers, how many snowboarders and how many skiers bought season passes?
Answers
Answer:
24
Step-by-step explanation:
The numbers of home run a baseball player hits during spring training and during the regular season for four years are shown. Decide if the relationship between home runs hit in spring training and during the regular season is proportional. If the table represents a balanced relationship, find how many home runs are hit during the regular season if the player hits 3 during spring training. Home Runs 2 8 4 4 5 20 6 24 Question content area bottom Part 1 How many home runs are hit during the regular season if the player hits 3 during spring training?
Answers
Answer: 12 home runs.
Step-by-step explanation:
3 liters of water are shared equally by 5 people how much water does each person get?
Answers
3 liters divided by 5
HELPPPPPPppppp.........
Answers
Answer: 36 ft sq
Explanation: use P.E.M.D.A.S. and your equation
Please help lol im giving 100 points.
Answers
Answer:
-1
Step-by-step explanation:
The y-intercept is the point when the x-value is zero. If this graph is going by ones, it would be -1. In other words, the y-intercept is the dot that is on the y line.
Answer: -1
Reason: So, on the Y-axis on the graph, only one point is actually touching that. That point is -1. Thus with thus information, we can assure that it's -1. I hope I didn't confuse you.
I hope this helps, and Happy Holidays! :)
What is the mean of this data set? A set of data showing the lengths of pencils in inches. The data includes the following values: 2, 4, 5, 6, 3, 6, 3, 5, 2, 5, 4, 4. three and one over two 4 four and one over twelve 5
Answers
Answer:
4.0833333333333
Step-by-step explanation:
add it all up then divide it by how much number there is
2 + 4 + 5 + 6 + 3 + 6 + 3 + 5 + 2 + 5 + 4 + 4 = 49
There are 12 values in the data set, so we divide the sum by 12:
49 / 12 = 4 and 1/12
Therefore, the mean of the data set is 4 and 1/12 inches.
which one is greatest (please show work)
2/7
1/3
3/13
1/13
1/15
Answers
Answer:
obvoisly 1/3
Step-by-step explanation:
Beacause 1/3 is .33333
and to check others just multipl their numerator by 3 and if it is less than the denomoinator than 1/3 is greater(beacu it is greater). For example, 2*3=6, which is less than 7 on 2/7
Liz's age is two-thirds of Debbie's age. Debbie's age is half of Freya's age. what is the ratio of Liz's age to Freya's age?
Answers
Answer:
Let's start by using variables to represent the ages of the three people:
Let L be Liz's age.
Let D be Debbie's age.
Let F be Freya's age.
From the problem, we know that Liz's age is two-thirds of Debbie's age, so we can write:
L = (2/3)D
We also know that Debbie's age is half of Freya's age, so we can write:
D = (1/2)F
To find the ratio of Liz's age to Freya's age, we need to express Liz's age and Freya's age in terms of a common variable. Since we have an equation relating Debbie's age to Freya's age, we can use that as the common variable. From the equation D = (1/2)F, we can solve for F in terms of D:
F = 2D
Now we can substitute this expression for F into the equation for Liz's age:
L = (2/3)D = (2/3)(1/2)F = (1/3)F
So Liz's age is one-third of Freya's age. The ratio of Liz's age to Freya's age is therefore 1:3.
Which ordered pair is not a solution of f(x) = 2x + 9?
(7, 23)
(3, 14)
(2, 13)
(0, 9)
Answers
Answer:
The answer is (3,14)
Step-by-step explanation:
Answer:
(3,14)
Step-by-step explanation:
Please help me,
Gia is thinking of a number, which she calls n. She adds 4 to the number and then doubles the sum.
Write an expression to represent Gia's number.
(I don't know what the expression is, if u can help me, please write the answer! :)
Answers
Answer: 2n + 8
Step-by-step explanation:
1st part:
n + 4
2nd part:
Multiplies the 1st part by 2
2(n + 4)
2n + 8
The graph below shows the heights and arm spans of several basketball players at a tournament. Height and Arm Span of Students A graph has height (centimeters) on the x-axis and arm span (centimeters) on the y-axis. A trend line has a positive slope. The line goes through points (160, 160) and (170, 170). Based on the graph, which is the best prediction of the arm span of a player that is 202 cm tall? 195 cm 202 cm 210 cm 352 cm
Answers
Answer:
It should be
(160, 160)
(170, 170)
(202, 202)
(195, 195)
(210, 210 )
(352, 352)
Step-by-step explanation:
Answer:
202cm tall, or B on edge
Step-by-step explanation:
A jacket has an original price of $50. You have a 20% off coupon. The sales tax will be 4%. What will you pay for the jacket after the discount and sales tax?
Answers
20% * $50 = $10
So the discounted price of the jacket is:
$50 - $10 = $40
Next, we need to calculate the sales tax on the discounted price. The sales tax is 4% of the discounted price of $40, which is:
4% * $40 = $1.60
Finally, we add the sales tax to the discounted price to get the total price:
$40 + $1.60 = $41.60
Therefore, you will pay $41.60 for the jacket after the discount and sales tax.
Answer:
$41.6
Step-by-step explanation:
The formula to find discount is (discount% x Original price) - original price.
In this case, that would be .20 times 50, which is 10.
Now you need to subtract 10 from 50, which is 40.
40 is the discounted price of the jacket before tax.
To find the tax price, you need to multiply the store price times the % tax, and add it to total cost.
In this case it would be 40 x .04, which is 1.6.
Now you add 1.6 to 40 which is $41.6.
Therefore, you will pay $41.6 for the jacket.
IM SO SORRY IF THIS DIDN'T MAKE SENSE!
A property map is drawn at a scale of 1:1000. Calculate the corresponding actual distance for each distance between two points on the map. 4.9 cm
Answers
Answer:
4,900 cm
Step-by-step explanation:
1:1,000. So just do 4.9 x 1,000 to get answer. This gives you 4,900 cm when you solve.
Hope you found this helpful. If this is not what you asked, then I'm sorry because I didn't quite understand your question. Please make me brainliest! =D
4.9 x 1,000 = 4,900 hope that helps(:
Please help me I don't understand
What is the number that has a value 10 times the value of 0.009? Please Explain.
Answers
Answer:
Step-by-step explanation:
I don’t know
Answer:
0.09
Step-by-step explanation:
From what I'm understanding you have to use powers of 10. Here's how they work:
All you do is move the decimal point, I know that may sound weird but let me explain.
When we are working with powers of 10 you just multiply the number by 10.
10 x 0.009
Now instead of having to type that into a calculator, or working it out, you can just move the decimal point to the right or the left.
Here's how I remember it:
Multiplying- move it to the right so the number can get bigger
Dividing- move it to the left so the number gets smaller
The number of zeros (0) you have after the one determines how many times you move the decimal point.
100- move the decimal point twice
100000- move the decimal point 5 times
In this case you are multiplying and moving the decimal point to the right once. There is one zero in the number and the problem asks you to multiply.
0.009
= 0.09
You move the decimal point over once.
Hope this helps!!!
Billy is growing fast! At his last check-up at the doctor’s office, he measured 61 inches. Today, he measures 68 inches tall. What percent change is that?
Answers
The difference of the two is 7 inches, so you would divide 7 by 61 and get .114 which rounds to .11 and .11 is 11%
what is the integer for -22 + (-16) =
Answers
Answer:
-38
Step-by-step explanation:
in a three digit number, the hundreds digit is one more than the ones digit and the tens digit is twice the hundreds digit. If the sum of the digits is 11, find the number. If the hundreds digit of the number is x, the equation will be? 20 Points to solve and brainliest.
Answers
Answer:
I am not sure, but I think 362 is the answer
Step-by-step explanation:
hundred digit:x
tens digit:2x
ones digit:x-1
x+2x+x-1=11
4x=12
x=3
number=362
Of the four points (2,2), (9,11), (5,7), and (11,17), three lie on the same line. Which point is not on the line?
Answers
Answer:(11.7)
Step-by-step explanation:
If you graph the points (11.7) does not make part of the line
I would kill for someone to do this for me
please
Answers
2) D
3) C and D
4) A
Answer:
1) x=4
2) d
3) c & d
4) b
Step-by-step explanation:
Divide. Express your answer in simplest form. 8 divided by 2 4/9
Answers
Answer:
3 3/11
Step-by-step explanation:
Answer:
3 3/11
Step-by-step explanation:
Equation: 8/1 ÷ 2 4/9
Turn into improper fraction: 8/1 ÷ 22/9
Keep, change flip: 8/1 × 9/22
Simplify: 4/1 × 9/11 = 36/11
Answer: 36/11 = 3 3/11
Hope this helped!!! Add me brainliest for more math answers like this one and pls thank me!