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3 years ago

A rectangle is 5 feet wide and 10 feet long what is the perimeter

1 answer:

7 0

The perimeter would be 30 feet.
Since the rectangle is 10 ft long and 5 ft wide, you have to all sides together
10 + 10 + 5 + 5 = 30

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Given the triangle below, solve for X.

Dima020 [189]

Answer:

19.8494332413? Sorry I couldn't be more helpful.

Step-by-step explanation:

Use the Pythagorean theorem.

$a^{2}+b^2=c^2\\13^2+15^2=x^2\\169+225=x^2\\394=x^2\\19.8494332413=x


$

5 0

3 years ago

If a= 2, b= -3 and c= 4 evaluate ab-bc

Harrizon [31]

Answer:

ab - bc = 6

Step-by-step explanation:

COMPUTATION:

ab - bc = ?

(2 x -3) - (-3 x 4) = ?

(-6) - (-3 x 4) = ?

(-6) - (-12) = ?

-6 + 12 = 6

Hope this helps!

6 0

2 years ago

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DaniilM [7]

Answer:1 page

Step-by-step explanation:

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8 0

3 years ago

Look up and here and help mee

satela [25.4K]

Which question are you wanting answered its hard to tell

4 0

3 years ago

A set of data items is normally distributed with a mean of 400 and a standard deviation of 60. Find the data item in this distri

Softa [21]

Answer:

The data item is $X = 580$

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.

Mean of 400 and a standard deviation of 60.

This means that $\mu = 400, \sigma = 60$

z=3

We have to find X when Z = 3. So

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

$3 = \frac{X - 400}{60}$

$X - 400 = 3*60$

$X = 580$

The data item is $X = 580$

6 0

3 years ago