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AveGali [126]
2 years ago
15

Please help me I’ll give who ever Anwswrs it brainliesst

Mathematics
2 answers:
VLD [36.1K]2 years ago
8 0

circumference: 12.56

area:50.27

hope this helps

:))

Kazeer [188]2 years ago
6 0
The circumference formula is 2 times pi times radius. In this case, we are substituting pi with 3.14. So, 3.14 times 2 times 4 (the radius) = 25.12. Therefore, the circumference is 25.12 m.

The formula for the area of a circle is pi times radius squared.

4^2 = 16.

16 times 3.14 = 50.24

So, the area of the circle is 50.24 squared, or 50.24^2.
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Which value of I makes the equation 6 (0.52 – 1.5) + 20 =-9- (1 + 6) true? 0 - 14 O1 14​
Virty [35]
-1 you are correct about that answer
6 0
3 years ago
Please help i cant seem to figure this out
Ahat [919]

Answer:

117649

Step-by-step explanation:

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2 years ago
At silver gym membership is $25 per month ,and personal training session are $30 each. At fit factor , membership is $65 per mon
frosja888 [35]
If you are solving for x than the answer would be x=4.
8 0
3 years ago
Read 2 more answers
(a) An article in a medical journal suggested that approximately 14% of such operations result in complications. Using this esti
aev [14]

This question is incomplete, the complete question is;

Surgical complications: A medical researcher wants to construct a

99.5% confidence interval for the proportion of knee replacement surgeries that result in complications.

- An article in a medical journal suggested that approximately 14% of such operations result in complications. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.08?

Answer: a sample of operations needed is 149

Step-by-step explanation:

Given that;

confidence interval = 99.5% = 0.995 so

margin of error E = 0.08

p = 14% = 0.14

now we obtain the critical value of z t the 99.5 confidence interval

∝ = 1 - confidence interval

∝ = 1 - 0.995

∝ = 0.005

∝/2 = 0.0025

obtaining the area of probability in the right tail

Area of probability to the right is = 1 - 0.0025 = 0.9975

from probability table; critical value of t =2.81

using the formula

n = p( 1 - p ) [ (z_∝/2)/E)² ]

so we substitute  

n = 0.14 ( 1 - 0.14 ) [ 2.81 / 0.08 )²  

n = (0.14 × 0.86 ) × 1233.7656

n = 148.5453 ≈ 149

Therefore , a sample of operations needed is 149

4 0
3 years ago
Plss help
KonstantinChe [14]

\frac{1}{2} \times 5 \times 16 \\ 40 \\ ke = 40joules

if correct mark me as brainiest

4 0
3 years ago
Read 2 more answers
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