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Softa [21]
3 years ago
13

20. In a population with μ=60, a score of X=58 corresponds to a z-score of z=-0.50. What is the population standard deviation?

Mathematics
1 answer:
gavmur [86]3 years ago
4 0
The answer to your question is I don’t know
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A line passes through the point. (4, -7) and has a slope of 5/2
blagie [28]

t p = through point

s = slope

y - y(t \: p) = (s) \times ( \: x - x(t \: p) \: ) \\

y - ( - 7) =  \frac{5}{2} \times (x - 4) \\

y + 7 =  \frac{5}{2} \times (x - 4) \\

y + 7 =  \frac{5}{2}x -  \frac{5 \times 4}{2} \\

y +7 =  \frac{5}{2}x -  \frac{20}{2} \\

Subtract both sides -7

y =  \frac{5}{2}x -  10 - 7 \\

y =  \frac{5}{2}x -   17 \\

And we're done....

♥️♥️♥️♥️♥️

6 0
3 years ago
Blue cassettes hold 45 minutes of music. Green cassettes hold 55 minutes of music. If Niko has 16 cassettes containing 830 minut
Aneli [31]
B + g = 16.....b = 16 - g
45b + 55g = 830

45(16 - g) + 55g = 830
720 - 45g + 55g = 830
-45g + 55g = 830 - 720
10g = 110
g = 110/10
g = 11 <=== there are 11 green cassettes

b + g = 16
b + 11 = 16
b = 16 - 11
b = 5 <=== there are 5 blue cassettes
3 0
3 years ago
Read 2 more answers
Solve this equation -129=6(7+7x)-3
leva [86]

Answer:

-4

Step-by-step explanation:

-129 = 6(7 + 7x) - 3

Distribute the 6 into the parentheses.

-129 = 42 + 42x - 3

Add like terms.

-129 = 39 +42x

Subtract 39 from both sides.

-168 = 42x

Divide 42 from both sides.

-4 = x

7 0
4 years ago
Read 2 more answers
I really don't understand number 10 please help
djyliett [7]
Its asking what possible coordinates 
8 0
3 years ago
Read 2 more answers
Tell whether (-1,2) is a solution of 8x+y&gt;-6
harina [27]

Answer:

Not a solution.

Step-by-step explanation:

(x, y)

(-1, 2)

Substitute the x and y values in the expression with the point given.

8x + y > -6

8(-1) + 2 > -6

-8 + 2 > -6

-6 > -6

Since our final value has to be greater than -6 but is instead equal to -6, the solution is not true.

3 0
3 years ago
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