Mathematics Middle School

The following is the formula to find the area of a circle. Which shows the formula correctly solved for the radius (r) in terms of the area (A)? A = pi r^2

A. r = (square root symbol) a pi
B. r = a pi/2
C. r = (square root symbol) a/pi
D. r = a/2 pi

Answers

Answer 1

Answer:

C

Step-by-step explanation:

This has to be C because you need to divide pi from r squared bc they r multiplied. Then you get a/pi = r squared. You need to find the square root of a/pi. So r equals square root a/pi.

Related Questions

please help plsssssss

Answers

Answer:

No

Step-by-step explanation:

The sum of two sides of any triangle must be greater than the remaining side.

12+6>4

18>4

12+4>6

16>6

6+4<12

10<12

^This one doesn't work^

Yes because they all have even lengths of a triangle

Solve the system of equations

Y= -7x+3
Y= -x -3

What is X
What is Y

Answers

The answer is X = 1 and Y = -4.

I need help, please!

NO LINKS!

Answers

Step-by-step:

4x + 10 = -26

Subtract 10 from both sides

4x = -36

Divide each side by 4

x = -9

To check it, substitute -9 for x in the original equation.

4(-9) + 10 = -26

-36 + 10 = -26

-26 = -26

Answer:

X=-9

Step-by-step explanation:

4x+10=-26

4x=-26-10

4x=-36

x=-9

please help me with this

Answers

Answer:

1: 8-2: 603-3: 1539

Step-by-step explanation:

I gotchu

Please help! Will mark brainlist!

Answers

Answer:

C

Step-by-step explanation:

We need to find the area of BOTH the rectangle AND the triangle. So the formula to find area of a triangle is bh[tex]\frac{1}{2\\}[/tex], or bh/2

b- base

h height

And obviously to find area of rectangles and stuff like that is just l x w

So let's find area of the rectangle, AKA the whole,

5x11=55

The area of the rectangle is 55

Now for the triangle,

The base is 5, and the height is 3. 5 x 3 = 15, and 15/2 = 7.5

The area of the triangle is 7.5

Now, subtract because we don't want the area of the triangle BUT the shaded region, so 55-7.5= 47.5 We have to add a unit so its 47.5^2, so the answer is C

Hope this helps!!

-Ketifa

C

I had to do this question to

plz show how you get these awnser in an equation plz no links I've wanted 100 points trying to get a answer all I get are links

Answers

It looks like the answer are already there

if you can’t see it don’t bother answering. plss hurryyy

Answers

Answer:

Older Brother - 18yo

Able - 9yo

Younger Sister - 5yo

Step-by-step explanation:

18 + 9 + 5 = 32

18 is twice the amount of 9

9 is 4 more than 5

pls pls pls pls pls help

Answers

A is the answer dude

Answer:m

Step-by-step explanation:

please help, no links or i will report
The numbers 0 to 10 are in a hat. If you were to pick two numbers at random (you put the first number back in the hat after you pick it out) what is the probability that you will pick a 1, then a 9?

Answers

Answer:

i believe 1/5

Step-by-step explanation:

Answer: I think it is 1/5

Please help (Proportions)

Theo is baking a recipe that makes 36 cookies with 2 cups of sugar. At this rate, how many cups of sugar are needed to bake 18 cookies?

Answers

Answer:

1 cup of sugar ..............

ANSWER: 1 cup

36 cookies: 2 cups
18 cookies: 1 cup
(Divided by 2)

Algebra 1 Homework Thanks to whoever helps, have a nice day;)

Answers

The picture won’t show hun
The picture doesn’t show anytibg at all

When a swimmer dives into the pool, an angle measurement is created. What is an approximate measurement of this swimmer upon entering the water?

A. 70°
B. 55°
C. 40°
D. 25°

Answers

The Answer would be C because the person is diving in at a 55° angle and when they hit the water it would decrease.
B is your correct answer! I think

Nathan wants to draw a triangle. He knows that two of the side lengths are 5 inches and 7 inches. What is a possible length for the third side?

Answers

Answer:

the third side would be 5 inches.

Step-by-step explanation:

Answer:

7 inches

Step-by-step explanation:

Hope this Helps!

HELPPPPPPP Mr. Brown has a rectangular garden in his backyard. The garden is 8.5 feet long and 3.5 feet wide. The border that he plans to use costs $1.99 per foot. How many feet of border will Mr. Brown need to order to go around his garden? How much will it cost?

Answers

Answer:

6x=48

Step-by-step explanation:

The equation 2x + 2 = x+5 is modeled below. x What value of x makes the equation true? A X = 1 B Y = 3 C x = 5 D X = 7

Answers

B Y = 3

2 x + 2 - x = 5
2 x - x = 5 - 2
x = 5 - 2
x = 3

Answer:

b

Step-by-step explanation:

2x + 2 = 1x + 5

combine the like terms.

2x + 2 = 1x + 5

-2x        -2x  

------------------

2 = -1x + 5

isolate the -1x.

2 = -1x + 5

-5          -5

----------------

-3 = -1x

solve for x.

-3/-1 = -1x/-1

3 = x

so b. correct me if any of this is wrong.

what is the mode of these numbers
32, 16, 54, 60, 26, 32

Answers

Answer: The mode is 32

Step-by-step explanation: It is the number that is repeated multiple times.

The mode is 32 as there is two 32’s
The mode means the number repeated more than once in a set of numbers/ the most frequent number
Example - 99 , 62 , 83 , 90, 62
The mode here would be 62
Hope this helps have a good day

Alexa is a songwriter who collects royalties on her songs whenever they are played in a commercial or a movie. Alexa will earn $20 every time one of her songs is played in a commercial and she will earn $110 every time one of her songs is played in a movie. Alexa earned a total of $340 in royalties on 8 commercials and movies. Write a system of equations that could be used to determine the number of commercials and the number of movies on which Alexa's songs were played. Define the variables that you use to write the system.

Answers

Answer:

x + y = 8

20x + 110y = 340

Step-by-step explanation:

X+y=8
So 20x+110y=340

if it takes 1/5 cup of flour to make 1/8 of a cake, hiw many cups of flour are needed to make a whole cake​

Answers

1.6 :)

Multiply hope this helps

What is the volume, to the nearest whole cubic inch, of a cylinder with a height of 10 inches and a radius of 8 inches? Use Pi = 3.14 and round your answer to the whole number.
okay so I know that the answer is 2010 but can someone please explain why it is 2010 it just doesn't make since to me!?! Please and thank you.

Answers

Answer:

2010.61 in³

Step-by-step explanation:

V= πr2h = π · 82 · 10 ≈ 2010.6193

For this question, use the spinner shown in the picture.

P(D) = _____________

Write your answer as a fraction in simplest form.

Answers

Answer:

1/6

Step-by-step explanation:

it has 6 possible but there is only 1 that has a D so 1 out of 6

anwser: 1/6


step by step explanation:

In Alan's math class, there are 12 boys and 13 girls; what is the ratio of girls to boys?

Group of answer choices

12/13

13 to 12

12 to 13

13:25

Answers

Answer:

13 to 12

Step-by-step explanation:

Since we're supposed to find the ratio of girls to boys, then let's make a ratio! Remember since they said girls first, we have to start with the number of girls. Since they said boys first, we have to end with the number of boys.

girls to boys

That is our ratio. Now let's plug in the number of girls and boys!!

Girls = 13

Boys = 12

13 to 12

The answer is 13 to 12.

Hope this helped!! If you have any questions, make sure to write below!!

13 to 12 would be the correct answer.

100%
The equation E = 1125 +45d shows the total expenses, E, of the Wilson family's vacation for d days.
What are the expenses per day, NOT including the initial expenses?
A $25
OB. $45
Ο Ο Ο Ο
O c. $1,080
OD. $1,125
O E $1,170

Answers

The answer is E.$1,170
I think it’s is A!!!!

A right pyramid has a square base that measures 10 cm on each side. Its peak is 12 cm above the center of its base. What is the sum of the lengths of the pyramid's eight edges? Express your answer to the nearest whole number.

Answers

Answer:

I think it's 52 cm but  I'm  not 100% sure

Step-by-step explanation:

HURRY UP AND PLZ ANSWER,THIS IS FOR A GRADE AND I NEED TO PASS, I WILL GIVE BRAINLIEST
whats 2+2??
:p

Answers

Answer:

4

Step-by-step explanation:

yea

Answer:

22 jk 4 lol ofc

Step-by-step explanation:

HELPPP PLEASEE ASAPP

Answers

Answer:

More boys than girls

Step-by-step explanation:

Answer:

Boys > Girls

Step-by-step explanation:

The boy's diagram is farther up in the numbers than the girl's diagram is. The median is also higher for the boys than the girls.

Find the area of the following figure

400 cm2
312 cm2
252 cm2
300 cm2

Answers

312cm2 I hope this helps

Answer:

312

Step-by-step explanation:

I took the test

Identify the shape of the cross section that is perpendicular to the base of a cylinder.
A. circle
B. rectangle
C. rhombus
D. triangle

Answers

Answer:

A is the answer

Step-by-step explanation:

mark Brainliest please

It’s A not B not C and not D

A circle has a circumference of 266.9 inches. What is the Diameter of this circle? What is the Radius? Use 3.14 as the approximation of π.

HELP, IM BEING TIMED ON THIS!!

Answers

Answer:

D = 84.95, R = 42.47,  

Step-by-step explanation: can solve radius by using C/2(pie)

can solve diameter by using C/ pie

Please help, I am very confused

Answers

Answer: 0.8

The volume is 8/45 so a•b•c=8/45

So 2/3•1/3•a=8/45

Multiply 2/3•1/3=0.222222 or 2/9
So 2/9•a=8/45

Divide 8/45 / 2/9= 0.8
a=0.8

Hope this makes sense and it helps!!

Answer is 0.8 hope that helps

just some algebra questions that i don't know the answers to

Answers

Answer:

The ball reaches it's max height of 8 feet at 0.5 seconds.

The ball was at 7 feet at 0.25 seconds and 0.75 seconds.

The tennis ball was above 4 feet for about 1 second.

Between 0.5 seconds and 0.75 seconds the ball decended 1 foot.

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