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2 years ago

14

The pyramid shown has a square base that is 18 inches on each side. The slant height is 16 inches. What is the surface area of t

he pyramid?

1 answer:

Alik [6]2 years ago

4 0

The answer is 28sqinches Why The Surface Area of a pyramid is A=L×W×Have since the base is l×with combined it's now SA=BA×H
SA=18×16
SA=288sqinches.

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A marathon runner runs at 7.6 mph for three and a half hours.<br> How many miles has he run?

GalinKa [24]

Answer:

26.6 miles

Step-by-step explanation:

distance = speed × time ( time is in hours )

= 7.6 × 3.5

= 26.6 miles

5 0

2 years ago

2ci 1=-d 6-ci solve for c and d

Otrada [13]

Imaginary numbers ? just equate the imaginary with imaginary and real with real

<span>2ci 1=-d 6-ci <<< what the * is that ?

</span><span>
</span>

5 0

3 years ago

Please solve below !!

12345 [234]

Answer:

square root of 113 or 10.6

Step-by-step explanation:

7^2+ 8^2= C

49+64=C

113=C

square root of 113 OR 10.6

Hope this helped :)

3 0

2 years ago

Read 2 more answers

Pete asks Buzz to make a triangular truss with sides that are 5 feet, 6 feet, and 9 feet. Is this enough information for Buzz to

Georgia [21]

Answer: Yes.

Step-by-step explanation:

One of the criteria of congruence for triangles is SSS, this means that when we know that two triangles have all the same side lengths, the triangles are congruent. This would mean that all the triangles with the same side lengths are rotations or translations of the same triangle.

Then, when we know the measures of the 3 sides of a triangle, we have only one possible triangle to make, which would mean that Buzz has enough information to make a truss with the correct size and shape.

8 0

2 years ago

A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean

EastWind [94]

Using the normal distribution, it is found that 7.64% of of sample means are greater than 8.8 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

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

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

The parameters are given as follows:

$\mu = 8.4, \sigma = 1.77, n = 40, s = \frac{1.77}{\sqrt{40}} = 0.2799$

The proportion of sample means greater than 8.8 hours is <u>one subtracted by the p-value of Z when X = 8.8</u>, hence:

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

By the Central Limit Theorem

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

$Z = \frac{8.8 - 8.4}{0.2799}$

Z = 1.43

Z = 1.43 has a p-value of 0.9236.

1 - 0.9236 = 0.0764.

7.64% of of sample means are greater than 8.8 hours.

More can be learned about the normal distribution at brainly.com/question/25800303

#SPJ1

6 0

2 years ago