What is the surface area please?

Mathematics

1 answer:

laiz [17]3 years ago

8 0

360 because the sides are 120, 130, 60, and 50

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A 22-foot ladder is resting against the side of a building. The bottom of the ladder is 3 feet from the building. Find the measu

malfutka [58]

Hello,

We know the hypotenuse 22 ft,
the adjacent side 3 ft,
so the cosine of the angle we are going to search is 3/22
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3 years ago

The island's l dimensions are 3 1/2 feet by 1 3/4 feet. If the scale of the blueprint is 1 inch =2 feet, what are the dimensions

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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 $\mu = 8, \sigma = 1.5$