If a radius of a sphere is divided by 2, will the surface area be divided by 2?

Answers

Answer 1
If r is the radius of a sphere its surface area = 4(pi)r^2.

If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2.

So the surface area becomes 4-fold or the increase in surface area is 300%.

Related Questions

pls help find the equivalent fractions
2/4=
1/4=
4/2=
2/3=
6/8=
1/3=
1/4=
1/2=
4/6=
3/6=
it's ok if you don't do it all take your time

Answers

Answer:

If you multiply or divide both the top of a fraction and the bottom of a fraction by the same number, so for example:

[tex]\frac{2}{4}[/tex]÷[tex]\frac{2}{2} = \frac{1}{2}[/tex]

1/4 = 2/8

4/2 = 2/1 or 2

2/3 = 4/6

6/8 = 3/4

1/3 = 2/6

1/4 = 2/8

1/2 = 2/4

4/6 = 2/3

3/6 = 1/2

Answerk:

The answer is

[tex] \frac{1}{2} = \frac{2}{4} = \frac{3}{6} \\ \frac{2}{3} = \frac{4}{6} [/tex]

Game city charges a fee of $10 plus 3.50 per game rented. gaming central charges a fee of 22 plus 2.50 per game. For how many game rentals will the cost be the same at both stores? what is the cost?

Answers

City: 10 + 3.5g
Central: 22 + 2.5g

10 + 3.5g = 22 + 2.5g
g = 12

12 game rentals

10 + 3.5(12) = 52
22 + 2.5(12) = 52

(middle school math vocabulary) (please help!)
so I was wondering if anyone could help me on some of these, I marked off the ones I’ve done. Thanks :(

Answers

Answer:

Equations are always true

÷ and x always undo each other

that is an equation

Step-by-step explanation:

help plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz (for savas realize)

Answers

Answer:

39

Step-by-step explanation:

y=kx(k is constant of proportianiality)

39=k(1)

k=39

if my answer helps please mark as brainliest.

Answer:

ltvy,f

Step-by-step explanation:

iu;p

pls answer all questions for brainliest!!

Answers

Answer:

Question 1: The LCM of 5 and 6 is 30.

Question 2: The LCM of 6 and 9 is 18.

Question 3: The LCM of 6, 12, and 15 is 60.

Question 4: The LCM of 3, 9, and 15 is 45.

Question 5: Inez will do both again in 30 days.

Quickly help me! This isn't live or anything, I just don't want to wait an hour.

Answers

Answer:

1/12

Step-by-step explanation:

When you add or subtract fractions, you need a common denominator.

Let's use the least common denominator of 12, 6, and 3.

Since 12 is a multiple of 6 and 3, the LCD is 12.

7/12 - 1/6 - 1/3 = 7/12 - 2/12 - 4/12 = 5/12 - 4/12 = 1/12

Answer:

1/12

Step-by-step explanation:

When you add or subtract fractions, you need a common denominator.

Let's use the least common denominator of 12, 6, and 3.

Since 12 is a multiple of 6 and 3, the LCD is 12.

7/12 - 1/6 - 1/3 = 7/12 - 2/12 - 4/12 = 5/12 - 4/12 = 1/12

According to the Marshall’s survey, 80 sixth graders, or 40% of the students in sixth grade like to have school remote. How many sixth graders are there in Marshall Middle School?






Highlight the correct answer.

180

240

200

520

Answers

200 is the answer i know this because 40%of 200 is 80
Option 3, 200, is the correct answer.

Step by Step Explanation :

40 percent of 180 is 72.
40 percent of 240 is 96.
40 percent of 520 is 208.

40 percent of 200 is 80.

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or a decrease.

2. 100 acres to 140 acres

Answers

Answer:

Percent of Change: 30% (rounded) It is an increase

Step-by-step explanation:

30% is the answer I believe!

Please help DUE today 30 points + brainlist ONLY 2, 4, 20, and 18. Show work for 18, and 20 please

Answers

For 2 maybe, MAYBE, x=3

please help I'll give brainiest

Answers

What do you need help on exactly?
haha sorry if i’m wrong but i think that’s what the answer is :))

What is the solution to this system of equations?

A: (2,4)
B: (1,2)
C: (4,2)
D: (2,1)

Answers

Answer:

the answer to this would be C.

The answer is C.(4,2)

plsssssssss helpppppp

Answers

Answer: I think “equal”

Step-by-step explanation:

Equal? I think that it is correct

Find the area of the circle with a circumference of 18.84 miles. Use 3.14 for π.

Answers

Answer:

Area = 28.25[tex]mi^{2}[/tex]

Step-by-step explanation:

Circumference formula:

C = πd

Plug in your data:

18.84mm = 3.14(d)

Divide by 3.14 to isolate for x.

18.84mm / 3.14 = d

d = 6mm

Mr. Franklin recorded the number of push-ups his students completed in thirty seconds. Which statement below is a reasonable conclusion based upon the information in the histogram?


A. Four students completed 1 to 5 push-ups in thirty seconds.
B. Most students completed 21 to 25 push-ups in thirty minutes.
C. No one completed 25 push-ups in thirty seconds.
D. Mr. Franklin has more than 20 students in his class.

Answers

Answer:

A

Step-by-step explanation:

because it says that "A. Four students completed 1 to 5 push-ups in thirty seconds." and if you look at the graph 4 students did 1 to 5 push-ups.

Answer:

a

Step-by-step explanation:

pls help!!! ill give a brainliest

Answers

Answer:

--6+36m

Step-by-step explanation:

Step-by-step explanation:

the answer is 36m-6 .the process is shown in the picture

horse shoe crabs have blue blood instead of red and their blood is used for medical research

Answers

Answer:

woahh, i didn't even know that

Step-by-step explanation:

i searched it up and :

"What is the horseshoe crabs blue blood used for?

Horseshoe crab blood is bright blue. It contains important immune cells that are exceptionally sensitive to toxic bacteria. ... Scientists used these clever blood cells to develop a test called Limulus Amebocyte Lysate, or LAL, which checks new vaccines for contamination."

Answer:

RALEVN

Step-by-step explanation:

HHHHHHHHIIINILNY8TGYLOGGGT8I

identify the function shown in this graph

Answers

it’s c since the line goes down 5 and the y intercept is 3 so it would be y=-5x+3

Which expression is equal to 2(3 - x) - 12 + 4x ?

Answers

Step-by-step explanation:

6+2x-12+4x

6x-6

6(x-1)

What is the area of this triangle?

A) 96 square units

B) 192 square units

C) 240 square unit

D) 48 square units

Answers

Answer:

C

Step-by-step explanation:

I think this is a correct answer, so please tell me if it is not. I am sorry if it is not.

Answer:

the area is A) 96 square units

Step-by-step explanation:

ab/2

16*12/2

192/2

96

Answer this pleaseeeee past due

Answers

Answer:

8.8

Because you can devide 66 by 7.5

Step-by-step explanation:

Answer:

Okay so if you divide the $66 and the $7.50 per yard you get 8.8 yards.

Step-by-step explanation:

I think this is correct. If there are any questions just comment them below and I'll try my best to answer them. Hope that this helps you out! :)

Oliver used 1/6 of an ounce of nuts to make 1/7 of a cake. How many ounces of nuts are needed to make a whole cake?



Type your answer as a fraction. If it is improper, change it to a mixed number.



Do not include "ounces" in your answer.
Need help ASAP

Answers

It is 1 1/6(7/6 is the improper fraction)

Pls help it is due today

Answers

Answer:

1. 4(2h+g)

2. 4h+4h+3g+g

3. 2(4h+2g)

Step-by-step explanation:

1. 4 times 2h= 8h, 4 times g=4g

2. 4h+4h=8h, 3g+g=4g

3. 2 times 4h=8h, 2 times 2g=4g

can you mark me brainliest please

Answer:  B,  C , and E are the answers

Step-by-step explanation:

First solve the expressions by breaking it down.  

2h + g   Nothing can be done to this expression because it is already broken down.

4(2h + g)  Apply the distributive property to break it down.  

 4(2h) + 4(g)

=    8h + 4g  

4h + 4h  + 3g + g   Combine like terms to break this one down

(4h + 4h) + (3g + g)

= 8h + 4g  

1/4(2h + g)    Apply the distributive property to break it down.  

=  1/2h + 1/4g  

2(4h + 2g)     Apply the distributive property to break it down.    

= 8h  + 4g    

1/8(8h + 4g)   Apply the distributive property to break it down.  

  1h + 1/2g  

 

Please follow the directions.

Answers

Answer:

672 dollars i think

Step-by-step explanation:

it is 672 dollars. :)))

Is the perimeter of the composite figure equal to the sum of the perimeters of the individual figures? Explain by selecting all the statements that apply.
yes; To find the perimeter of the composite figure, add the perimeters of each of the individual figures.
yes; To find the perimeter of the composite figure, multiply the perimeters of the individual figures.
no; To find the perimeter of a composite figure, find the distance around the figure.
no; The perimeter of the composite figure does not include the measure of the shared side.
Which ones do I pick?

Answers

Answer: No the third one , you have to find the distance around the figure

Step-by-step explanation:

Answer:

is the third one bro I had the same hw in perimeter on the composite figure

Outback automatically applies an 18% gratuity (tip) on parties larger than 12 people. You went to dinner with a group of 20 people and the bill was $246. What is the total cost of the bill, including the gratuity (tip)?

Answers

246 x 18%=tip
Tip= 246 x .18
Tip=44.28
Tip+bill=total cost
44.28+246= 290.28
Or
246 x 1.18= 290.28

A pizza shop charged $49.57 for 3 large pepperoni pizzas. This price included a $2.50 delivery fee.

What was the price of a large pepperoni pizza?

Enter your answer in the box.


A) $18.63

B) $16.52

C) $15.69

D) $17.36

Answers

Answer:

C) 15.69

Step-by-step explanation:

First subtract the delivery fee from the total then divide by 3

I agree with the person above :)

A ball is dropped from the top of a 400-ft tall tower. The relationship between the time, t, in seconds, and the height, h(t), in feet, of the ball can be modeled by a quadratic function. Specific values of the function are shown in the table below
Part A: Determine the average rate of change of h(t) between t = 2 and t = 5.
Part B:Explain what this average rate of change means in terms of the context.

Answers

Answer : 3

step by step :

HELP ME PLEASE IT IS DUE TOMRROW AND TACHER ISNT CHEKCING HER EMAIL.

Answers

Answer:

2cm : 16m

Step-by-step explanation:

This is just a guess.

Answer:

10 x 6 cm

Step-by-step explanation:

First drawing is 5 cm by 3 cm

Apply 1 cm : 8 m scale

Real size of flag is 40 m by 24 m

Apply new scale of 1 cm : 4 m scale

New drawing is 10 cm by 6 cm

(I always write length before width)

Geet sells televisions. He earns a fixed amount for each television and an additional $20 if the buyer gets an extended warranty. If Geet sells 18 televisions with extended​ warranties, he earns $1,530. How much is the fixed amount Geet earns for each​ television?

Answers

Answer: $65

Step-by-step explanation: first you want to get rid of the amount in extended warranties, to do this you want to multiply 20 and 18. by doing this you get 360, so subtract 360 from 1530 and you get 1170. To find out the fixed amount per you want to divide by the amount of televisions sold which is 18. So 1170 divided by 18 is 65 so that is the fixed amount.

The fixed amount Greet earns would be $65, hope this helps!

Madeline found that the experimental probability of her scoring from a
three-point line in a basketball game is 1/10 or 10%. Out of 20 shots from a
three-point line, about how many points could she predict she would make?

pls help

Answers

Answer:

6 points

Step-by-step explanation:

1/10=x/20cross multiply the x with the 10 and the 20 with the 1 so that you are now left with the fraction 10x/2010x divided by 20 will give you x=2to check and make sure this is still equivalent with the 10% of shots Madeline makes divide 2/20Since this is still 10 percent Madeline makes 2 out of every 20 shots Multiply those 2 shots by three points since it was from the three point line and we get 6 points

Hope that helps :)

Using the binomial distribution, it is found that she would be expected to make 6 points.

For each shot, there are only two possible outcomes, either she makes it, or she misses it. The probability of making a shot is independent of any other shot, which means that the binomial distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability, which has expected value given by:

[tex]E(X) = np[/tex]

In this problem:

She takes 20 shots, hence [tex]n = 20[/tex].She has a 10% probability of making each shot, hence [tex]p = 0.1[/tex]

The expected number of shots she makes is given by:

[tex]E(X) = np = 20(0.1) = 2[/tex]

Since each shot from the three-point line is worth 3 points, she is expected to make 2 x 3 = 6 points.

A similar problem is given at https://brainly.com/question/24261244

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