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3 years ago

7

Scores on a Algebra test have average of 80 with standard deviation of 5. What is the z-score for a student who earned a 82 on t

he test? Round your answer to the nearest thousandth.

1 answer:

Dafna11 [192]3 years ago

3 0

Answer:

16

Step-by-step explanation:

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Help me please I dont understand

Vaselesa [24]

Answer:

42°

Step-by-step explanation:

This is right triangle and sum of 2 angles is 90°:

y+48°=90°

so y= 90°- 48°= 42°

4 0

3 years ago

Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease.

Rainbow [258]

Answer:

Because 20 has to be doubled to become 40. While 40 is twice as much as 20 so you just divide 40 by 20 to get 50%.

Explanation:

20 x 20 = 40 = 100%

40 / 20 = 50%

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3 years ago

Which of the following is the solution to the system of equations?

drek231 [11]

Answer:

B (3/4,5/4)

Step-by-step explanation:

y = 2- x

$\frac{5}{4} = 2 - \frac{3}{4}$

y = 3x - 1

$\frac{5}{4} = 3 \times \frac{3}{4} - 1$

$\frac{5}{4} = \frac{9}{4} - \frac{4}{4}$

Hope this helps ^-^

6 0

2 years ago

1 card holds 10 stickers, 59 stickers. How many cards are needed

pochemuha

The answer is

6 cards

6 0

2 years ago

Please help . Determine the type of triangle that's drawn below.

Paha777 [63]

Answer:

scalene Right

Step-by-step explanation:

um it has a 90 degree so yea

7 0

3 years ago