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

Simplify the expression:
v2+9+5+4v2

Answers

Answer:

what is 4v2

Step-by-step explanation:

Answer:

2+9+5+4*2= 24v

Step-by-step explanation:

answer choices

147

57

123

33

Answers

Answer:

Step-by-step explanation:

they are vertical angles so they are equal

I believe it’s 33 ....

plzzzzz help i need this for my homework thx :)

Answers

Answer:

=4.1d+5.4h−18

Let's simplify step-by-step.

8h−0.9d−18+5d−2.6h

=8h+−0.9d+−18+5d+−2.6h

Combine Like Terms:

=8h+−0.9d+−18+5d+−2.6h

=(−0.9d+5d)+(8h+−2.6h)+(−18)

=4.1d+5.4h+−18

Answer:

[tex]-1.9d+5.4h-18[/tex]

Hope this helps :)

-ilovejiminssi ♡

pleaseeeeeeeeeeeeeeeeeeeeeeeeeeessssssssssssssssssss

Answers

You kept the movie for 3 extra nights

Answer:

4 1/2 days

Step-by-step explanation:

3.45 plus 1.25 times 5 = 8.45

it says on the final day you pay 7.70 so its 4 1/2

Which expression has a value of 15 when p = 12?

StartFraction 18 Over p EndFraction
3p
18 minus p
p + 3

Answers

Answer:

18 minus p

Step-by-step explanation:

if u subtract 18-p u will get p=12

Fabiola’s dog is 5 pounds heavier than one-third of the weight of Luisa’s dog. Fabiola’s dog weighs 23 pounds. Use the diagram to write an equation to represent the dogs’ weights. Let f represent the weight of Luisa’s dog.

A long rectangle is the top section. 2 smaller rectangles are the bottom section.

The top section represents
.
The bottom section represents
.
The equation is

Answers

answer;

1. the top section represents, 23 pounds. (d)

2. the bottom section represents, 5 + 1/3f. (a)

3. the equation is, 23 = 1/3f + 5. (b)

hope this helps!

1/3x+5=23 is equation to represent the dogs’ weights and weight of Luisa' dog is 54 pounds.

What is Equation?

Two or more expressions with an Equal sign is called as Equation

Let f represent the weight of Luisa’s dog.

Fabiola’s dog is 5 pounds heavier than one-third of the weight of Luisa’s dog.

Luisa' dog weight: x pounds

One-third of the weight of Luisa’s dog: 1/3x pounds

5 pounds heavier than one-third of the weight of Luisa’s dog : 1/3x+5

Fabiola's dos weight: 1/3x+5pounds that is 23 pounds.

1/3x+5=23

Subtract 5 from both sides

x/3=18

x=54 pounds

Hence, 1/3x+5=23 is equation to represent the dogs’ weights and weight of Luisa' dog is 54 pounds.

To learn more on Equation:

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Help please i dont understand
Turn it btw

Answers

Answer:

1 + 3/6

Step-by-step explanation:

the first full thing represents 1 then there are 3 of 1/6 which is 3/6

What is the surface area?
5 in
6 in
5 in
5 in
4 in

Answers

Answer:

Where is the question:)

25
Add up all the measurements

Can you guys please help me with this (picture is below)

Answers

The school did reach the goal because if you add the games, concessions and donations you get $1232 and if you subtract 28 from it you get $1204 and if you subtract 75 from that you get $1129.

yes, they did reach their goal.

Start by adding 650, 530, and 52 because those are all the money made and received (the income). Then there are the expenses that you have to subtract due to the fact that they're losing money. So from adding all the income you get 1232 and then when you subtract your expenses you get 1129 which is a 29 dollar difference. (i hope this helped :D)

when the movie the hunger games was released it made $493,000 the first day. box sales continued to double every three days how much was the movie grossing on the 15th day?
PLZZZZZZZZ SHOW YOUR WORK!!!!!!

Answers

The movie was grossing $3,451,000 on the 15th day, just doubled the original amount every three days and got $3,451,000 or 493,000 * 7 = 3,451,000

I'LL GIVE BRAINLIEST:

A, B, or, C

Answers

Answer:

I think... Triangle

Step-by-step explanation:

Because the shape is a triangle

Which year saw the warmest temperatures, on average?

A. 2006
B. 2007
C. they are the same
D. you cannot tell from the graph

Answers

Answer:

A. 2006

Step-by-step explanation:

The blue line is 2006 and goes the highest on the graph, up to 100 degrees.

A. 2006
The graph you’ve provided shows the purple line at 100* during 2006.

Please help fill in the blanks, better with explanation but optional

Answers

The scale factor is 3 as the lengths in the bigger triangle when divided by 3 gives the lengths in the smaller triangle

Answer:

The scale factor is 3

Step-by-step explanation:

The scale factor is 3 as the lengths in the bigger triangle when divided by 3 gives the lengths in the smaller triangle

what is the estimate of 8.1x4.2?
A. close to 3.2. B. close to 0.32 C. close to 320 or D. close to 32?

Answers

Answer:

8.1x^4 x 0.2 = 1.62x^4

Step-by-step explanation:

The estimated multiplication of 8.1 and 4.2 is close to 32.

What is a decimal?

A decimal is represented by a dot that separates the whole part and the fractional part of a number. Decimals can also be converted into fractions and vice versa.

Estimations are essential when we don't have a tool to calculate the exact value of something.

Given A multiplication of two decimal numbers 8.1 and 4.2.

Now 8.1 can be estimated as 8 and 4.2 can be estimated as 4 and we know 8 times 4 is 32 so, the multiplication of 8.1 and 4.2 is close to 32.

learn more about decimal multiplication here :

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At Ocean World, Wally the Whale uses
800 Newtons of force to jump out of the water
10 meters into the air. Wally does this trick four
times a day. He is able to get 10 meters high in
3.5 seconds. How much work does Wally do
each day? What is his average speed with each
jump?

Answers

The answer is 700 do you want an explanation?

A cycle shop sells bicycles, tricycles, and unicycles in a single color of red, blue, green, or white. Draw a tree diagram to find out how many different combinations of cycles types and colors are possible. (I need the answer before 5:30 today)

Answers

i’m pretty sure it would be a total of 4

Dan has 4 over 5 cup of ice cream. How many 1 over 8-cup servings are in 4 over 5 cup of ice cream?

Answers

6 and 1 over 2

i did lots of math

Heather deposits $7000 into an account that pays simple interest at a rate of 2% per year. How much interest will she be paid in the first 3 years?

Answers

Answer:

year after 3 year(s).

The formula we'll use for this is the simple interest formula, or:

Where:

P is the principal amount, $7000.00.

r is the interest rate, 2% per year, or in decimal form, 2/100=0.02.

t is the time involved, 3....year(s) time periods.

So, t is 3....year time periods.

To find the simple interest, we multiply 7000 × 0.02 × 3 to get that:

The interest is: $420.00

Usually now, the interest is added onto the principal to figure some new amount after 3 year(s),

or 7000.00 + 420.00 = 7420.00. For example:

If you borrowed the $7000.00, you would now owe $7420.00

If you loaned someone $7000.00, you would now be due $7420.00

If owned something, like a $7000.00 bond, it would be worth $7420.00 now.

420 dollars in 3 years

please help with them all please i need help asap

Answers

Answer:

Step-by-step explanation:

Hope this helps u and sorry me handwrighting is BAD but idc!

What the person who sent the picture said is correct

What is x - 12 = 6
THANKSSSSSSSSS

Answers

Answer:

Step-by-step explanation:

x - 12 = 6

x = 6 + 12

x = 18

can someone please do this :// I need B done on Question 9 but I'm so mad because no one is giving me a correct fkin answer

Answers

Should be 4 for B because 8-4 would equal 4

Answer:

4= length A

3= width B

B. The volume is 72

Step-by-step explanation:

I got 72 by making the whole shape into 2 different shapes and finding the volume of those first. I am not sure if this is correct but I hope it is and I hope this helps! :)

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.

1. 15 yards to 18 yards

Answers

Answer:

Percent of change: 20% (rounded) It is an increase

Step-by-step explanation:

Percent of change is 20% rounded

I'LL GIVE BRAINLIEST:

B or C

Answers

Answer:

Step-by-step explanation:

is the proper answer

What are the coordinates of Point X?
A. (3, –4)
B. (–3, –4)
C. (4, –3)
D. (4, 3)

Answers

Answer:

3, -4

Step-by-step explanation:

Hi I really hope this helps you, Please mark as brainliest!

The answer is A) 3,-4

What is 10x+5-(-2x+3) in simplest form

Answers

Answer:

12x-2

Step-by-step explanation:

10x+5-(-2x+3)

10x+5+2x-3

12x-2

10x+5+2x+3
12x+8
We just have to make - - to plus and then add the x ones and the other ones. Have a great day!

Can you please explain this to me and answer

Answers

1)73 degrees
all the angles of a triangle add up to 180 degrees.
23+84= 107
180-107=73

2) 28 degrees
110+42= 152
180-152= 28

Explanation:

All sides in a triangle is equal to 180°
So whenever given two sides only, add them up, and subtract from 180. That will give you the missing sides length.
So 23 + 84 = 107
180 - 107 = 73
The missing side of the triangle is equal to 73°.

110 + 42 = 152
152 - 180 = 28°
The missing side of the triangle is equal to 28°.

Another example is:
100°, 40°
Front the missing side in this triangle.
100 + 40 = 140°
180 - 140 = 40°
The missing length is 40°

Write an equation that looks like x^2 = # such that it will have no real
solutions. Justify why your equation will not have any real solutions.

Answers

3^2 = 9

Because 3 times 3 is 9 LOL

Please help this is worth 15 points!

Answers

It should be Non proportional

PLEASE HELP!!!!!!
1. 35⋅91−35⋅89
2. 22⋅87+22⋅13
3. 911⋅710−911⋅310
PLEASE HELPPP!!!!!!
I WILL GIVE BRAINLIEST!!!!!!!

Answers

Answer:

PLEASE MARK OTHER BRAINLIEST OR WHATEVER-

Step-by-step explanation:

pls help it is due today

Answers

264 students are in the whole entire school

Its 230 trust extending answer

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