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LUCKY_DIMON [66]

4 years ago

10

After a researcher adds 5 points to every score in a sample, the standard deviation is found to be s = 10. the original sample h

ad a standard deviation of s = 5.
a. True
b. False

1 answer:

12345 [234]4 years ago

4 0

A, true.

If you add 5 points to every score, that makes the difference between them 5 points higher.

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Help please quickly.

Viefleur [7K]

Answer:

3.5

Step-by-step explanation:

Look at the .5's closely if you take the 2.5 measurement info and then there is a little bit left that may be another .5 measurement.

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3 years ago

How do I do this im having trouble and its my exam day?

Gnom [1K]

Answer:

C.

Step-by-step explanation:

So basically set (10x-13) equal to (3x+22) and then solve for x

x=5

Plug 5 into the equations

(10(5)-13)=37

(3(5)+22)=37

These two angles are congruent due to the triangle being isosceles

37+37=74

All angles in a triangle are equal to 180 degrees

Therefore 180-74=106

Angle JKL= 106 degrees

Hope this helps :)

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4 years ago

There are 60 students going on a field trip to the chocolate factory. The students are from three different classes.

Bess [88]

Answer:

24+18+A=60.

Step-by-step explanation:

A=18

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4 years ago

Read 2 more answers

Write an equation for a rational function with: vertical asymptotes at x = 2 and x = -5 x-intercepts (-1,0) and (1,0) horizontal

solong [7]

Given vertical asymptotes x = 2 and x = -5 .

Therefore Factors of denominator (x-2)(x+5).

x-intercepts (-1,0) and (1,0) .

Therefore factors of (x+1)(x-1).

So far we got rational function = $\frac{(x+1)(x-1)}{(x-2)(x+5)}$ .

Now, we are given horizontal asymptote at y = 9.

Multiplying above express by 9 on the top, we get

$f(x)=\frac{9(x+1)(x-1)}{(x-2)(x+5)}$ .

<h3>Therefore, required rational function is $f(x)=\frac{9(x+1)(x-1)}{(x-2)(x+5)}$ .</h3>

7 0

4 years ago