1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IgorLugansk [536]
3 years ago
6

if the radius of a sphere is tripled, the surface area of a sphere will increasea) by a factor of 3b) by a factor of 4c)by a fac

tor of 6d)by a factor of 9
Mathematics
1 answer:
Vlad1618 [11]3 years ago
4 0

Answer:

D

Step-by-step explanation:

The area and the radius of a sphere are related by the formula:

A=4πr^2

Let’s say this is A1 and r1

Now the radius is tripled. This means r2 = 3r1

The new area thus becomes: A = 4 * (3r)^2 * π = 36πr^2

Comparing A1 and A2 , we can see that A2 = 9A1

You might be interested in
You would more likely give your friends a number of blocks to go east and then a number of blocks to go north. what would these
Zanzabum
3 blocks east and 2 blocks north should be the correct answer :)
4 0
3 years ago
Its add math. i really need help, solve the question. thanks♥️​
dexar [7]

Answer:

see explanation

Step-by-step explanation:

Given

f(x) = ax + b

x = 2 → f(x) = 1 and x = - 1 → f(x) = - 5 ( from the table )

Substitute these values into f(x) = ax + b, that is

2a + b = 1 → (1)

- a + b = - 5 → (2)

Subtract (2) from (1) term by term to eliminate b

3a = 6 ( divide both sides by 3 )

a = 2

Substitute a = 2 into (2) and evaluate for b

- 2 + b = - 5 ( add 2 to both sides )

b = - 3

(b)

When x maps onto itself then

ax + b = x, that is

2x - 3 = x ( subtract x from both sides )

x - 3 = 0 ( add 3 to both sides )

x = 3

Thus a = 2, b = - 3 and x = 3

6 0
3 years ago
What is the answer meyn?
Alexandra [31]

Answer:

the best value is two 50 ml bottles

Step-by-step explanation:

Okay focus with me , if you buy a bottle of 50 ml you will get a second for half price so we can say that --> 2 bottles of 50 ml =

45 +  \frac{45}{2}  = 67.5

We get 100 ml with £67.5 just , but when you buy 80ml you must pay £55 Hum !

then you can dived the volume of bottle with price ...

  • the price of one ml is 0.675 in first State

\frac{67.5}{100 } = 0.675

  • in the second state the price of one ml is

\frac{55}{80}  = 0.6875

then :

0.675 < 0.6875

so the best value is two 50 ml bottles

4 0
3 years ago
How do you simplify this –34–23a+16a
Dafna11 [192]

Answer:

-34 -7a

Step-by-step explanation:

–34–23a+16a

Combine like terms

-34 -7a

8 0
3 years ago
Read 2 more answers
You pick a card at random. 4 5 6 7 What is P(less than 7)? Write your answer as a fraction or whole number.
marta [7]

Answer:

3/4 is less than 7.

Step-by-step explanation:

There are 4 numbers but there are only 3 less than 7.

6 0
2 years ago
Other questions:
  • 1<br>ь - 1 1<br><img src="https://tex.z-dn.net/?f=21%20-%20b%20%3D%2011" id="TexFormula1" title="21 - b = 11" alt="21 - b = 11"
    10·1 answer
  • Find the surface area of the prism.
    12·1 answer
  • It takes Susan 3 hours to fix 2 broken cars and it takes Joseph 4 hours to fix 3 broken cars. If they work together how long wil
    9·1 answer
  • What is the mid point of A (a,3) and B (6,b) is (-2,3) find the value of a and b​
    15·1 answer
  • Lucy is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices.
    6·1 answer
  • 20) Write a division number story with an answer of 1/4.<br><br> Be sure to ask a question.
    15·1 answer
  • The weight of a bass varies jointly as its girth and the square of its length (Girth is the distance around the body of the fish
    12·1 answer
  • Can someone help me please
    10·2 answers
  • Whats the value of X
    6·1 answer
  • SOMEONE PLEASE HELP ILL MARK AS BRAINLIEST AND GIVE 5 STARSSSSS
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!