3 years ago

Number 30. Explain And list some properties

Mathematics

2 answers:

yarga [219]3 years ago

5 0

2 and three because the have the same length and all sides are the same

choli [55]3 years ago

3 0

A: Have 2 sets of parallel lines and all sides are the same length.

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30 + -30= 0

Naily [24]

Answer:

Here are some possibilities:

a.) 9 + -9 = 0

b.) 8 + 2 + -10 = 0

c.) 6 + 4 + -2 + -8 =0

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The scores on a psychology exam were normally distributed with a mean of 57 and a standard deviation of 9. A failing grade on th

mylen [45]

Given:Sample mean= 57

Standard Deviation= 9
score of 59

we go to our standard formula:

(score - mean) / sd = z
(59 - 57) / 9 = z

2/9 = z

0.2222 = z
Failing score cutoff would be equal to Mean - 2SD = 67 - 2(9) = 48 is failing score cutoff.

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3 years ago

HELP ME PLEASE! I NEED TO PAST THIS TEST!!!

JulijaS [17]

Answer:

Step-by-step explanation:

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most people lose 100 to 200 hairs per day. if you were to lose 150 hair per day for 10 days, what would be the change in the num

QveST [7]

Answer:

-1500 hairs

Step-by-step explanation:

You lose 150 hairs for 10 days

150 * 10 = 1500 hairs

The change is lose of hair so it is negative

-1500 hairs

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3 years ago

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2-3(5-6)³-4(-3)+16÷8(-3)<br>step by step please and thank you!

astraxan [27]

Answer:

$11$

Step-by-step explanation:

$2 -3(5 -6)^3 -4(-3) +16 \div 8(-3) \\ 2 -3(-1)^3 -4(-3) +16 \div 8(-3) \\ 2 -3(-1) -4(-3) +16 \div 8(-3) \\ 2 +3 +12 +2(-3) \\ 2 +3 +12 -6 \\ 5 +12 -6 \\ 17 -6 \\ 11$

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3 years ago