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3 years ago

Please Help me in begging

Mathematics

1 answer:

Bond [772]3 years ago

8 0

-9(5-4v+7v)
=-9(5+3v)
=-45-27v
-45-27v is the final answer.

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A factory produces 70 toys per hour. The relationship between the number of toys produced, t, and the number of hours elapsed, h

MrRissso [65]

B) t = 70 h

A factory produces 70 toys per hour. The relationship between the number of toys produced, t, and the number of hours elapsed, h, is proportional.

4 0

3 years ago

X-4=4 help plz plz plz

lorasvet [3.4K]

Answer:

Step-by-step explanation:

5 0

3 years ago

The top of the Washington Monument is a triangular pyramid with a triangle base. Each triangular face is 58 feet tall and 34 fee

MakcuM [25]

So 4 triangular faces of the pyramid will have total area

= 4 ×12 × base × height = 4 × 12 × 34 × 58ft2 = 3944ft2

So 3944ft2 of marble cover the faces of the pyramid.

4 0

3 years ago

Read 2 more answers

The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the variance of

White raven [17]

Answer:

0.3075 = 30.75% probability that a person will wait for more than 7 minutes.

Step-by-step explanation:

Problems of normally distributed samples are solved using 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.

The standard deviation is the square root of the variance.

In this problem, we have that:

$\mu = 6, \sigma = \sqrt{4} = 2$

Find the probability that a person will wait for more than 7 minutes.

This is 1 subtracted by the pvalue of Z when X = 7. So

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

$Z = \frac{7 - 6}{2}$

$Z = 0.5$

$Z = 0.5$ has a pvalue of 0.6915

1 - 0.6915 = 0.3075

0.3075 = 30.75% probability that a person will wait for more than 7 minutes.

7 0

3 years ago

How to solve -3(x+4)=-15

egoroff_w [7]

Answer:

x=1 -3(1+4)=-15

Step-by-step explanation:

-3(x+4)=-15

---------------

-3 -3

x+4= 5

-4=-4

x=1

That should be right

3 0

3 years ago

Read 2 more answers