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kow [346]
3 years ago
14

The heights of 20-year-old females are normally distributed with a mean of 64 inches and a standard deviation of 2 inches. What

is the z-score for a height of 62 inches?​
Mathematics
2 answers:
likoan [24]3 years ago
8 0
I’m on the same question lol
natali 33 [55]3 years ago
5 0

Answer: z= -1

Step-by-step explanation: z= (62-64)/2 = -1

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khanya builders are paid R480 for 8 hours of work,whiles rex builders are paid R660 for 12 hours of work.which company is paid t
kiruha [24]

Answer:

khanya pays higher

Step-by-step explanation:

You have to find the $/hr ratios:

khanya's is 480/8->$60/hr

rex's is 660/12->%55/hr

Khanya pays the higher rate

5 0
3 years ago
Someone please help!!!!!
Nadya [2.5K]

Answer:

144 people were originally at the party.

Step-by-step explanation:

18 boys is one fifth of the second boys population, so the second population is 18x9 = 162. The original population would be 162-18, which equals 144.

6 0
3 years ago
An Image point after a 180° rotation Is Z(3, 7). What were the coordinates of the pre-Image point?
mr Goodwill [35]

Answer:

Does the answer help you?

4 0
2 years ago
Simplify the expression: (9x+10) - (3x+7)
natali 33 [55]

Answer:

6x+3

Step-by-step explanation:

You first must distribute the negative sign to 3x+7, giving you -3x+7. Then you combine like terms (the 9x+(-3x) and 10+(-7)). This would give you 6x+3

4 0
3 years ago
Read 2 more answers
Simplify.<br> -sqrt m^4n^7
Delvig [45]

Answer:

-m^2 |n|^3 sqrt(n)

Step-by-step explanation:

-sqrt( m^4n^7)

We know that sqrt(ab) = sqrt(a) sqrt(b)

-sqrt(m^4) sqrt(n^7)

The sqrt(m^4) = m^2

The sqrt(n^7) = sqrt(n^6) sqrt(n) = |n|^3 sqrt(n)  We take the absolute value because if n is negative, n^6 is postive, but n^3 is negative

-sqrt(m^4) sqrt(n^7)

-m^2 |n|^3 sqrt(n)


3 0
3 years ago
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