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3 years ago

Find the value of x such that the data set has a mean of 103. 99,122,103,113,109,x

1 answer:

8 0

That means the average of all data point equal:

(99+122+103+113+109+x)/6 = 103
===> (546+x)/6 = 103===> 546+x=618 & x=618-546=72, so x =72

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Naila worked 3.5 hours more than Lisa. Together, they worked a total of 18 hours. Lisa worked h hours.

densk [106]

Answer:

Lisa = 7 hours and 15 minutes

Naila = 10 hours and 45 minutes

Step-by-step explanation:

Naila = N

Lisa = L

Naila worked:

N = 3.5 + L

In total, they worked:

N + L = 18

Lisa worked:

L = h

Substitute values into the total equation

3.5 + L + L = 18

Solve

2L = 14.5

L = 7.25 = 7 hours and 15 minutes

N = 7.25 + 3.5 = 10.75 = 10 hours and 45 minutes

Hope this helps :)

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3 years ago

PLEASE HELP!! Evaluate the expression below using the properties of operations. Show all work.

VikaD [51]

Answer:

The answer I believe is -185 1/7

Step-by-step explanation:

I followed PEMDAS.

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2 years ago

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Geoffrey draws a triangle. One of the angles measures 75° and one of the angles measures 40°. What is the measure of the third a

valina [46]

Answer:

D) 65°

Step-by-step explanation:

Remember, all the angles of a triangle are 180 degrees and 75 + 40 + 65 = 180 degrees. Please if you can, support my channel. In the images you can find the information ;)

4 0

2 years ago

A particular fruit's weights are normally distributed, with a mean of 446 grams and a standard deviation of 17 grams. If a fruit

LekaFEV [45]

Answer:

The weight corresponding to which weight will be larger than 14% of times equals 427.635 grams.

Step-by-step explanation:

We need to find the value of weight that corresponds to 14% of area under the normal distribution curve

It is given that

$\overline{X}=446\\\\\sigma =17$

Using standard normal distribution tables we find value of Z corresponding to 14% of the area as -1.080

Thus using the standard equation

$Z=\frac{X-\overline{X}}{\sigma }\\\\X=\sigma \times Z+\overline{X}\\\\\therefore X=427.635grams$

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3 years ago

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Help‼️What is the volume of the cylinder below?

Grace [21]

V(cylinder) = base*height =(πr²)h = π*4²*6=96π

Answer: B. 96π units³.

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3 years ago

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