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2 years ago

5

Please give me the answer and show me how you solved it

1 answer:

Yuri [45]2 years ago

4 0

Answer:

Option 1: -8c^8

Step-by-step explanation:

We multiply the numbers by the numbers, then the variables times the variables.

-2 times 4 gives us -8

c^3 times c^5 = c ^8. When multiplying a variable with exponents, you add the exponents.

You only multiply the exponents when it's something like (c^3)^5

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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:

$\mu = 28, \sigma = 6$

What are the minimum value of the bill that is greater than 95% of the bills?

This is the 95th percentile, which is X when Z has a pvalue of 0.95. So X when Z = 1.645.

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

$1.645 = \frac{X - 28}{6}$

$X - 28 = 6*1.645$

$X = 37.87$

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

4 0

2 years ago

In a circle, what is the ratio of the circumference to its diameter?

NemiM [27]

Answer:

D. pi

Step-by-step explanation:

Circumference of a circle = $\pi d$

Diameter = d

Therefore, ratio of circumference of a circle to its diameter would be:

$\pi d : d$

$= \frac{\pi d}{d} = \pi$ => (d cancels d)

Therefore, the ratio of the circumference of a circle to its diameter is $\pi$

4 0

2 years ago

The length of a rectangle is 4 times the width. the area is 256 square centimeters. find the length and width of the rectangle.

sukhopar [10]

Width=8
Length=32

Look at the GCF of 256

3 0

2 years ago

Read 2 more answers

If you change the sign of a point’s x-coordinate from positive to negative, how will the location of the point change?

SCORPION-xisa [38]

The plotted point will be reflected across the y-axis.

6 0

3 years ago

An angle measures 8.2° more than the measure of its complementary angle. What is the

nikitadnepr [17]

9514 1404 393

Answer:

49.1°, 40.9°

Step-by-step explanation:

Let x represent the smaller angle. Then the larger is x+8.2 and the total of the two angles is ...

x + (x +8.2) = 90

2x +8.2 = 90 . . . . . collect terms

x + 4.1 = 45 . . . . . . .divide by 2

x = 40.9

x +8.2 = 49.1

The two angles are 49.1° and 40.9°.

3 0

2 years ago