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Brilliant_brown [7]

3 years ago

15

A national achievement test is administered annually to 3rd graders. the test has a mean score of 100 and a standard deviation o

f 15. if jane's z-score is 1.20, what was her score on the test?

2 answers:

BARSIC [14]3 years ago

7 0

Her score on the test was 98.8

storchak [24]3 years ago

5 0

Answer:

118.

Step-by-step explanation:

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He will have 7.75 left from the 20 dollar bill he spent

5 0

3 years ago

Read 2 more answers

Find the mean absolute deviation for the set below s equals 65 , 90, 85, 70, 70, 95, 55

ddd [48]

75.7 I think that is the answer

5 0

3 years ago

(50 POINTS) Write out each sum.

valentina_108 [34]

Step-by-step explanation:

12. n^2+2n

if you insert 1 for k and then work up by inserting 2 for k and adding those together and stoping at n.

13. 8-2(2^n)

if you insert 3 for k and then work up by inserting 4 for k and adding those together and keep on going but stopping at n.

Hope that helps :)

4 0

2 years ago

What is the equation of the following line written in slope-intercept form -2/3 and -1/-4? y = -11x - 7 y = -7x + 11 y = -7x - 1

Snowcat [4.5K]

Answer:

$y=-7x-11$

Step-by-step explanation:

Given:

The two points on the line are $(-2,3)$ and $(-1,-4)$ .

The slope of the line joining two points $(x_{1},y_{1})$ and $(x_{2},y_{2})$ is given as:

$Slope,m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Here, $x_{1}=-2,y_{1}=3,x_{2}=-1,y_{2}=-4$

∴ $m=\frac{-3-4}{-1-(-2)}=\frac{-7}{-1+2}=\frac{-7}{1}=-7$

Equation of line with a point $(x_{1},y_{1})$ and slope $m$ is given as:

$y-y_{1}=m(x-x_{1})$

Plug in -2 for $x_{1}$ , 3 for $y_{1}$ and -7 for $m$ . This gives,

$y-3=-7(x-(-2))\\y-3=-7(x+2)\\y-3=-7x-(7\times 2)\\y-3=-7x-14\\y=-7x-14+3\\y=-7x-11$

Therefore, the equation of the line in vertex form is $y=-7x-11$ .

4 0

3 years ago

Consider the fibonacci sequence below, which is the first term in the sequence to exceed 120?

gizmo_the_mogwai [7]

Answer:

144

Step-by-step explanation:

The sequence is:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946

so you can see the first term larger than 120 is the 144.

3 0

2 years ago