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kakasveta [241]

3 years ago

5

Help pls!!!!!!!!!!!!!!

1 answer:

kvasek [131]3 years ago

6 0

Answer:

160 for each

Step-by-step explanation:

A normal distribution means that mean = median = mode. Furthermore, in a normal distribution, 68% of values are within 1 standard deviation of the mean, 95% of values are within 2 standard deviations, and 99.7% are within 3 standard deviation.

The mean is 150 and the standard deviation is 15. 165 and 135 1 standard deviation away from the mean, so 68% of values are between 135 and 165. This means that 32% of values are not between those values. A normal distributuion is symmetric, so 16% of values are greater than 1 standard distribution and 16% are less. Therefore, 16% of values (160) are less than 135 and 16% of values (160) are greater than 165

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If x^2=4 then x=2 pleas help me

pochemuha

$x^2=4\Longrightarrow x=4^{2^{-1}}=4^{\frac{1}{2}}=\sqrt{4}=\boxed{2}$

So the first one is correct which implies that the third one is also correct.

But these are not the only ones.

$2x=2\Longrightarrow x=\dfrac{2}{2}=\boxed{1}$

The last one is also correct.

Hope this helps.

r3t40

6 0

4 years ago

3. The stem-and-leaf plot shows the cost of lamps at a department store.

77julia77 [94]

Answer:

(a) What is the median cost?
12-78

(b) Is there a mode? If so, what is it?

No there isn't

(c) What is the difference between the most expensive and least expensive lamps?

12,75-78

(d) How many lamps cost more than $20 but less than $40?

5

(e) What is the ratio of lamps that cost less than $40 to lamps that cost more than $40? Write the ratio in the simplest form.

{for less} - (12,49) {for more} - (49,78)

Step-by-step explanation:

hope I helped if it's wrong tell me

~Ally

3 0

2 years ago

Find the value of x.<br> 6x+6<br> 9x-9<br> 32<br> 24<br> x = [?]

Naddika [18.5K]

Answer:

x=3

Step-by-step explanation:

$\frac{6x+6}{32} =\frac{9x-9}{24}$

Cross mutiply and x is equal to 3

6 0

3 years ago

Round to nearest hundreth: 5.82

dexar [7]

Answer:

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Step-by-step explanation:

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3 years ago

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Georgia [21]

Answer:

I cant see the photo maybe try again?

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers