PLS HELP ME I NEED THIS

Mathematics

2 answers:

svlad2 [7]3 years ago

8 0

Step-by-step explanation:

Area of triangle = 1/2 × width × height

= 1/2 × 16.9 × 10.4

= 87.88 ft²

Helga [31]3 years ago

5 0

Answer:

87.88

reason:

use triangle area formula which would be (height)(base)/2
(16.9)(10.4)/2 is 87.88

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The complement of an angle is 25°. What is the measure of the angle?

Varvara68 [4.7K]

65 degrees.

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3 years ago

Maggie needs to spend at least six hours each week practicing the piano. She has already practiced three and one fourth hours th

Allisa [31]

Answer:

3 1/4 + 2x ≥ 6

Step-by-step explanation:

Let X equal the remaining time she needs to practice.

You would have 2x

The combined total needs to be 6 hours or greater.

You need to add the amount she already practiced to 2x.

Now you have: three and one fourth + 2x

This needs to be greater than or equal to 6.

I hope this helps you :)

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4 years ago

The daily dinner bills in a local restaurant are normally distributed with a mean of $28 and a standard deviation of $6. What ar

Degger [83]

Answer:

The minimum value of the bill that is greater than 95% of the bills is $37.87.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 28, \sigma = 6$