How do you calculate the area of a circle​

Answers

Answer 1

Just follow this formula.

Area of a Circle= [tex]\pi R^{2}[/tex]

That means PI Radius Squared

Hope this Helps.

-Northstar

Answer 2

Its best to ask your teacher bc like some people wont answer bc thats hard


Related Questions

Rectangle A is 10 times as long as rectangle B.



If rectangle A is 80 units long, select all the ways to find the length of rectangle

Answers

Answer:

8

Step-by-step explanation:

80/10=8

How many degrees are inside of a convex hexagon? Remember to use (n-2)180.
180
360
720
1080

Answers

Answer:720
Very good at doing degrees in math!

Evaluate 0.5m + 1.2m when m = 4

Answers

Plug in 4 for m.
So, 0.5(4)+1.2(4)
2+4.8
= 6.8.

Answer:6.8.

Step-by-step explanation: 0.5(4) + 1.2(4) 2 + 4.8= 6.8.

The price of CD player was reduced from 80 to 52 what was the percent decrease in the price of the CD player

Answers

Answer:

The CD player's price decreased by 35%

81, 6, 7, 1, 42
Mode ??
Median ??

Answers

Answer:

No mode

Median 7

Step-by-step explanation:

Mode: The mode is the element that occurs most in the data set. In this case, all elements occur only once, so there is no mode.

Median: Arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.

Answer:

Mode: no mode

No mode because there are no repeating numbers.

Median=7

Put in order from least to greatest- 1,6,7,42,81

Find the one in the middle- 7

Solve the formula a(m+r) -t=s for a.​

Answers

9514 1404 393

Answer:

  a = (s +t)/(m +r)

Step-by-step explanation:

Add t, then divide by the coefficient of 'a'.

  [tex]a(m+r)-t=s \qquad\text{given}\\\\a(m+r)=s+t \qquad\text{add $t$}\\\\\boxed{a=\dfrac{s+t}{m+r}} \qquad\text{divide by $m+r$}[/tex]

PLEASE ANSWER!! I WILL GIVE BRAINLIEST IF YOU TELL ME THE CORRECT ANSWER AND HOW TO SHOW MY WORK FOR IT!! (MUST SHOW WORK TO GET BRAINLIEST)

Answers

Answer:

For the first question, the answer is 32 oz.

For the second question, the answer is 16 oz.

Step-by-step explanation:

For the first one, since there are 16 ounces in a pound, we can assume that since she has 3 pounds of fudge, she would have 48 ounces. She then eats one pound of fudge, which means we subtract 16 from 48 getting us to 32 ounces.

For the second question, it states that she gives one half of her fudge to her sister. 2 times 1/2 is 1, and since there are 16 ounces in a pound, she therefore gave 16 ounces of fudge to her sister.

Answer:

1. 32 ounces

2. 16 ounces

Step-by-step explanation:

Question 1

First, you have to subtract. The equation for the subtraction is 3-1 because the student took 1 pound of fudge away from the 3 pounds she already has. And 3-1 equals 2. Now, you have to convert 2 pounds to ounces. Lastly, multiply 2 by 16 as it says in the picture (it says 16 ounces equals 1 pound). The answer to this equation can be expressed as 32 or 32 ounces.

Question 2

First, you have to take information from the previous question which is that she has 2 pounds of fudge left. Then, she gives [tex]\frac{1}{2}[/tex] of the fudge to her sister, so you have to divide 2 by [tex]\frac{1}{2}[/tex] which is 1. Now, you have to express 1 as ounces as shown in the picture. You just have to multiply 1 by 16 which is 16. Therefore the answer can be expressed as 16 or 16 ounces.

Jean has $280 in her savings account. Starting next week, she will deposit $30 in her account every week.



Complete the table to show her total savings after 1, 2, 3, and 4 weeks.

Answers

So $280 • 30x
X would be 4
So 30 • 4 + 120
Week 1 - $310
Week 2 - $340
Week 3 - $370
Week 4 - $400

Total after for weeks of saving : $400

In which quadrant does 694 lie?

Answers

Answer: C. quadrant l

Step-by-step explanation:

Angle 694° lies Quadrant IV which is correct option (D)

What is a graph?

A graph can be defined as a pictorial representation or a diagram that represents data or values

What is the quadrant?

A quadrant is defined as an area contained by the x and y axes, which there are four quadrants in a graph.

For Quadrant  I : the value of x and y both are positive ( +,+ )

For Quadrant  II :  the value of x is negative and y is positive ( -,+ )

For Quadrant  III : the value of x is negative and y is negative ( -, - )

For Quadrant  IV : the value of x is positive and y is negative ( +, - )

Locate the quadrant of the angle.

If the angle is greater than 360°,

Subtract 360° until the angle is less than 360°.

⇒ 694 - 360

⇒ 334°

Hence, angle 694° lies Quadrant IV

Learn more about the quadrant of graph here:

https://brainly.com/question/7196312

#SPJ2

Can someone help please (7th grade math)

Answers

dude I'm six grade and I think it's c

Billy wrote a total of 32 pages over 16 hours. After spending 21 hours writing this week, how many pages will Billy have written in total? Assume the relationship is directly proportional.

Answers

Answer:

42

Step-by-step explanation:

Answer:

I'm not 100% sure about this but i think its 42

Step-by-step explanation:

this is what i did

32/16=2

2*21=42

Write an equation that is perpendicular to the line y = 5x - 1 and passes through the point (10, 8)

Answers

Answer:

y = -1/5 x + 10

Step-by-step explanation:

The equation of a line in point slope form is expressed as;

y - y0 = m(x-x0)

m is the slope

(x0, y0) is the point on the line

Given the equation y = 5x -1

Slope m = 5

Slope of the line perpendicular to the line will bw M = -1/5

Substitute into the equation

y - 8 = -1/5(x-10)

5(y-8) = -(x-10)

5y - 40 = -x+10

5y = -x+10+40

5y = -x+50

y = -1/5 x + 10

Hence the required equation is y = -1/5 x + 10

Marina Polyakova pays a total of $1150 per month for rent and electricity. It costs $650 more for rent per month than for electricity. What are the costs for each?​

Answers

Answer:

900 and $250

Step-by-step explanation

Given data

Total cost of utilities per month =$1150

Let the cost of rent be x

And the cost of electricity be y

x+y=1150---------1

It costs $650 more for rent per month than for electricity

x=x+650-------2

From equation 1

x+x+650=1150

2x=1150-650

2X=$500

x=500/2

x=$250

Hence the cost of electricity is $250

And the cost of rent is $650+250

=$900

Devon forgets to pay his credit card bill for three months. Which of the following statements is TRUE? *

1. A Late Payment fee will not be charged to his account.
2. A Balance Transfer fee will be charged to his account.
3. His A.P.R. (interest rate) will rise to 30.24% until he pays back the amount he owes.
4. His A.P.R. (interest rate) will rise to 30.24% and stay there until he makes six consecutive minimum payments .

Answers

The answer is 3. His A.P.R. (interest rate) will rise to 30.24% until he pays back the amount he owes.

How do you graph this? y=−5x

Answers

Answer:

Step-by-step explanation:

dont need to graph the center dot, its just the origin

PLZ ANSWER QUICK IT WILL HELP A LOT!

Answers

It’s b or c it it probably c hope it helps

Answer:

He reflected it over the y-axis

Step-by-step explanation:

If the x coordinate is made a negative, that means it was crossed over the line that determines the y coordinate

margarite owns a boutique. she sells her jewelry at a 30% markup. if she buys a bracelet for $22, what would she sell it for after the markup?​

Answers

She would sell it for $26.60 after the markup.

There is a guitar that originally costs $249.99. It is on sale for 15% off. You also have to pay 6% sales tax. How much will you pay for the guitar? Please show work!!!

Answers

Answer:

225.24099

Step-by-step explanation:

249.99(0.15) = 37.4985

249.99 - 37.4985 = 212.4915

212.4915(0.06) = 12.74949

212.4915 + 12.74949 = 225.24099

4.7x4.7x4.7 thats about it

Answers

Answer:

103.823

Step-by-step explanation:

It's just 4.7 to the third power, so I multiplied to get 103.823. :)

The power, P (watts) , of a car engine is proportional to the square of its speed, s ( m / s ) . When s = 35 , P = 1580 . Work out the power (to 1 DP) when the speed is 30 m / s

Answers

Answer:

P=2200 , K=35

Step-by-step explanation:

The power, P (watts), of a car engine is proportional to the square of its speed, k%28m%2Fs%29; it means if you have two different powers and speeds, you will have a proportion

P%3Ak%5E2=P%5B1%5D%3Ak%5B1%5D%5E2 or

P%2Fk%5E2=P%5B1%5D%2Fk%5B1%5D%5E2

When given:

k=35, P=2200

Work out the power P%5B1%5D (to 1DP) when the speed is k%5B1%5D=40%28m%2Fs%29

so,

P=2200

 

k=35

k%5B1%5D=40

and you need P%5B1%5D

2200%2F35%5E2=P%5B1%5D%2F40%5E2

2200%2F1225=P%5B1%5D%2F1600

1.79592=P%5B1%5D%2F1600

1.79592%2A1600=P%5B1%5D

P%5B1%5D=2873.5 watts

If the speed is 30 m per second. Then the power of the car engine will be 1160.8 watts.

What is proportion?

A proportionate expression is one in which two items are equal.

The power, P (watts), of a car engine is proportional to the square of its speed s (m/s).

P ∝ s²

P = ks²

We have

s = 35

P = 1580

Then the value of k will be

1580 = (35)² × k

k = 1.2897

Then the equation will be

P = 1.2897s²

If the speed is 30 m per second. Then the power of the car engine will be

P = 1.2897 x 30²

P = 1160.8 watts

More about the proportion link is given below.

https://brainly.com/question/14335762

#SPJ2

What is the x-coordinate of point B? Write a decimal coordinate.

Answers

Answer:

-1.5

Step-by-step explanation:

Hope this helps! :D

Still dont know... fff

A parent purchased a dictionary for $13.50 and a pack of printer paper for $4.50. The sales tax rate was 4%. What was the total bill, including the sales tax?

Answers

Answer:

$18.72

Hope this helps :)

Regina bought fruit for her family. She bought 3 1/2 pounds of oranges and 4 3/4 pounds of peaches. If she used all but 1 3/8 pounds of the fruit in a fruit salad, how much fruit was in the fruit salad?

Answers

Answer:

3 1/2 oranges+ 4 3/4 peaches = 8 1/4 oranges and peaches - 1 3/8 fruit left= 6 7/8 lbs of fruit used.

hope this helps

There are 8 cookies in each box. Rhyan ate 6 from her box and Juan ate 4 from his box. How many boxes of cookies did they eat altogether?

Answers

10 cookies all together
10 cookies eaten from Rhyan and Juan!

What’s the answer laaalalalalalaaaaaa

Answers

Answer: The slope is -1/2, the y-intercept is 4, and the equation is y=-1/2x+4

Step-by-step explanation:

What number is 56% of 400? Show ALL of your work.

Answers

Answer: 224

Step-by-step explanation:

56% is the same as saying (56/100). When finding a percent of a number, you’re really setting up a ratio with the value x:

(56/100)=(x/400)

Then you just cross multiply:

(56 x 400)/100=x

x=224

i think i may have the answer but im not sure. if you answer thanks sm :)

Answers

Answer:

F

Step-by-step explanation:

3(5) would be the equivalent of 3*5, adding the + n.

help me on this.. which one?

Answers

its the first option thing

Answer:

1/x17

Step-by-step explanation:

the first one on the left

Please help can some one explain to no how to get the answer

Answers

Answer:

2(-2)+1

Step-by-step explanation:

All you have to do is replace x with-1

Find m∠RSQ
please and ty

Answers

Answer:

m∠RSQ = 19°

Step-by-step explanation:

From the picture attached,

RT is the diameter of the a circle.

Angle subtended at the circumference by the diameter of a circle = 90°

Therefore, m∠RST = 90°

Since, m∠RSQ + m∠QST = m∠RST

m∠RSQ + 71° = 90°

m∠RSQ = 90° - 71°

             = 19°

Therefore, measure of angle RSQ is 19°.

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