Which equation represents "the sum of eight times a number and seven is twice the number"?
2 answers:
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Given that, a sphere has a surface area of about 999 square millimeters.
Formula to find the surface area of sphere is,
S= 4πr² Where r = radius of the sphere and S= surface area.
Given S= 999 square millimeters.
So, we can write:
4πr² = 999
4 * 3.14 * r² = 999 Since, π = 3.14
12.56 *r² = 999
Divide each sides by 12.56.
r² = 79.53821656
r = √79.53821656 Taking square root to each sides of equation.
r = 8.918420071
So, r = 8.918 Rounded to nearest thousandth.
So, radius of the sphere is 8.918 millimeters.
Hope this helps you!
Answer:
x= 41.8°
Step-by-step explanation:
use inverse trig to find x.
(
)=x
type this into your calculator. (make sure the mode on your calculator is degree or it won't work)
x= 41.8
Hope This Helps:)
brainliest please