After rotating 180º, the box will be in the 1st quadrant. If it moved along the x-axis, it wouldnt be there anymore, and the after-picture shows it in the first quadrant still, so the only answer it can be is C.

3 0

3 years ago

How do u do this??????

natali 33 [55]

F(x^2) = x^2 - 3

5f(x^2) = 5x^2 - 15 = 2x - 8

Placing all the terms on the left side, we get:

5x^2 - 2x - 7 = 0 which factorises to

(5x - 7)(x + 1) = 0

So, x = 7/5 or x = -1

But x is non-negative, so x = 7/5 = 1 2/5

C is the answer.

8 0

4 years ago

If a student scored 82 points on a test where the mean score was 78.2 and the standard deviation was 6.7. the student's z score

vodka [1.7K]

Z-score formula is z=(x-m) / sd
x = data value
m= mean
sd = standard deviation

z= (82-78.2) / 6.7
=0.567
=0.57

5 0

3 years ago