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3 years ago

14

Suppose that the final exam scores of all statistics students at a nearby college are collected and are found to have mean 82.6,

with a standard deviation of 7.5 percentage points. Interpret the value of the standard deviation.

1 answer:

ale4655 [162]3 years ago

6 0

the data points are 7.5 points away from the mean 82.6

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Which expression is equal to<br> -18b^-4

victus00 [196]

Answer:

$- \frac{18}{ {b}^{4} }$

Step-by-step explanation:

$- 18b {}^{ - 4}$

express b^-4 with a positive exponent using:

$a {}^{ - n} = \frac{1}{ {a}^{n} }$

$- 18 \frac{1}{ {b}^{4} }$

$- \frac{18}{ {b}^{4} }$

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Which of the following expressions could be used to find the sale price of an item that costs d dollars if it is on sale for 30%

Elenna [48]

Greetings!

An item at full price is 100%, or by using the percentage formula: $(\frac{percentage}{100})$

If something is at 30% off, that means it is 70% of the original price (because minus the percentage from the 100%)

So by substituting the numbers into the percentage formula you end up with:

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3 years ago

What is the distance from 3, 5) to 4.-12)?

enyata [817]

Answer:

Step-by-step explanation:

P1 = (3.5,5) in the form (x1,y1)

P2 = (3.5,-12) in the form (x2,y2)

dist = sqrt[ (x2 - x1)^2 + (y2-y1)^2 ]

dist = sqrt[ (3.5-3.5)^2 + (-12-5)^2 ]

dist = sqrt [ 0 -17^2]

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2 years ago

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gulaghasi [49]

Answer:

4x² + 12x + 18

Step-by-step explanation:

This would be the trinomial.

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3 years ago

Read 2 more answers

I need this fast guys. This is due tomorrow help a fellow comrade out

gavmur [86]

So whats the answer. please help me I got a test of this

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3 years ago