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
makkiz [27]
3 years ago
12

If a spherical ball is enlarged so that its surface area is 9 times greater than its original surface area, then the original ra

dius was multiplied by _________.
Mathematics
1 answer:
luda_lava [24]3 years ago
6 0
The surface area of a sphere is A = 4 \pi r^{2} and if the original S.A was is enlarged to have it 9 times greater, the radius would be multiplied by 3 or roughly 2.99626 rounded off to 3.0. 

For example, let us assign values.
Let A=90

A= 90*9 = 810

90 = 4 \pi   r^{2} 

    and    810 = 4 \pi  r ^{2}

the first r is 2.68 and the second r is 8.03

then, \frac{8.03}{2.68} = 2.99626  or rounded off to 3.
You might be interested in
Kenny is 5 feet 5inches, while Lamar is 67 inches. Who is taller
erastovalidia [21]
5 feet 5 inches is the same as 65 inches, so LAMAR is taller.
6 0
3 years ago
Read 2 more answers
Solve for x.<br> logb(x + 2) + logb x = logb 24
BigorU [14]
What is log b is it x + 2 + x = 24
8 0
4 years ago
<img src="https://tex.z-dn.net/?f=%20%20%5Csqrt%7B2%20-%207x%7D%20%20%2B2x%20%3D%200" id="TexFormula1" title=" \sqrt{2 - 7x} +
FrozenT [24]

Answer:

√(2 - 7x) + 2x = 0

√(2 - 7x) = - 2x

[√(2 - 7x)]² = (- 2x)²

2 - 7x = 4x²

4x² + 7x - 2 = 0

4x² + 8x - x - 2 = 0

4x(x + 2) - (x + 2) = 0

(4x - 1)(x + 2) = 0

4x - 1 = 0 => 4x = 1 => x₁ = 1/4

x + 2 = 0 => x₂ = - 2

7 0
3 years ago
I'll give you brainliest if answered correctly!!<br><br> In the Giver book, What was Jonas's dream?
Savatey [412]

Answer:

His dream was that he wanted to bath his friend fiona

Step-by-step explanation:

4 0
4 years ago
What number is closest to 51.4
ohaa [14]
The answer is 51.9 becuse 51.4 +0.5 = 51.9
6 0
3 years ago
Read 2 more answers
Other questions:
  • an animal shelter has 36 kittens and 12 puppies available for adoption. what is the ratio of puppies to kittens
    12·2 answers
  • What is your heart rate supposed to be per minute
    14·1 answer
  • The Gomes family is on a road trip.On the first day,they drove a distance shown as 3 1/2 inches on a map.The actual distance tha
    8·1 answer
  • Do irrational numbers contain every possible combination of numbers?
    7·1 answer
  • Complete the equation 5/3 = t/6. t =
    13·1 answer
  • Can somebody help me I will mark brainlist complete the drop down menu !! :)
    12·2 answers
  • 2 1/2 + 2 1/3 + 3 2/3
    12·1 answer
  • What is IJH equal to?
    11·1 answer
  • 3a2 + 2a + 2a2 is equal to​
    15·2 answers
  • Maggie has twice as many apples in her grocery bag as her friends Leilani and Adeline combined. Leilani has 5 apples in her bag.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!