Someone pls help me I’ll mark u brainliest

Find the length of the diameter of a sphere with a surface area of 50.27 ft^2.

Liula [17]

Sphere Surface Area = 4 • π • r²

50.27 = 4 * PI * r^2

50.27 / (4 * PI) = r^2

 4.0003594946 = r^2

r = sq root ( 4.0003594946)

radius = 2.0000898716 

So the diameter = 4.0001797433 

or it is roughly 4 feet

6 0

3 years ago

8. Scott drank 3.5 bottles of water yesterday. Each bottle contained 1.2 pints of water. What was the number of pints of water S

antiseptic1488 [7]

Answer:

4.2 pints

Step-by-step explanation:

3.5 × 1.2 = 4.2

Answer: 4.2 pints

3 0

2 years ago

Peter earns $32,000 per year plus a 2.5% commission on his jewelry sales. Find Peter's total salary for the year when his sales

Murrr4er [49]

42000 - 100%
x - 25%
x = 2.5*420000/100 = 2.5*4200 = 10500

total: $32000 + 10500 = 42500

hope this help

7 0

4 years ago

1. Suppose you have a variable X~N(8, 1.5). What is the probability that you have values between (6.5, 9.5)

Natalija [7]

Answer:

0.6826 = 68.26% probability that you have values in this interval.

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

X~N(8, 1.5)

This means that $\mu = 8, \sigma = 1.5$