Answer:

Step-by-step explanation:
From the given question,
x 
Applying the required principle of indices to solve the question, we have;
x
=
x 
=
x 
= 
= 
Thus, the final answer is
.
Answer:
82.62
Step-by-step explanation:
Mean score (μ) = 80
Standard deviation (σ) = 5
The 70th percentile of a normal distribution has an equivalent z-score of roughly 0.525.
For any given score, X, the z-score can be determined by:

For z = 0.525:

A raw score of approximately 82.62 corresponds to the 70th percentile.
Answer: TRUE
<h2 /><h2 /><h2 /><h2 /><h2>ANSWER IS IN THE PICTURE MARK ME BRAINLIEST!!</h2>
Step-by-step explanation: Divide the circumference (perimeter) by pi. That gives you the diameter. Half of that is the radius. To get the area, square the radius, and then multiply by pi.
Answer:
b. 1:3
Step-by-step explanation:
To find the hypotenuse of the first triangle, use a^2 + b^2 = c^2
c = sqrt (5^2 + 12^2)
c = 13
From here, since they are similar, you can set up a proportion
13:39
1:3