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Thepotemich [5.8K]
2 years ago
9

Need help!!! Don’t understand at all…

Mathematics
1 answer:
ryzh [129]2 years ago
3 0
Cos A = adjacent/hypotenuse
Cos A = 9/26 = 0.346
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In a certain​ city, the average​ 20- to​ 29-year old man is 69.8 inches​ tall, with a standard deviation of 3.2 ​inches, while t
rodikova [14]

Answer:

the man

Step-by-step explanation:

The wording "relatively taller" in this context is presumed to be a reference to the corresponding percentile or z-score. By hand, the z-score is easier to calculate.

z = (x - μ)/σ

For the man,

... z = (75 -69.8)/3.2 = 1.625

For the woman,

... z = (70 -64.3)/3.9 ≈ 1.462

The man's z-score is higher, so he is taller than a larger percentage of the male population than the woman is of the female population.

___

If you're doing this by calculator, you can let it show you the percentile rank of each height. The man is in the 95th percentile; the woman the 93rd percentile. So, the man is relatively taller.

6 0
3 years ago
Your drawer has 5 pairs of black socks, 4 pairs of gray socks, 2 pairs of white socks, 1 pair of brown socks, and 1 pair of blue
Sergeeva-Olga [200]
5 pairs of black socks*2 because it’s a pair= 10 socks
4 pairs of grey socks*2=8
2 pairs of white socks*2=4
1 pair of brown socks*2=2
1 pair of blue socks*2=2
10 socks+8 socks+4 socks+2 socks+ 2 socks=26 socks in total
26/2=13+1 because you need to be sure you get one pair of socks. The smallest amount of socks you would have to grab to get at least one matching pair is 14 socks.
7 0
3 years ago
Which of the following best describes the expression 7(y + 5)?
WINSTONCH [101]

Answer:

d The product of a constant factor of seven and a factor with the sum of two terms

Step-by-step explanation:

It's a product, and one of the factors is 7.

Answer:

d The product of a constant factor of seven and a factor with the sum of two terms

8 0
2 years ago
I need to solve cy−7=5d+3y for y, any help?
iVinArrow [24]
Given cy - 7 = 5d + 3y, we solve for y as follows:

cy - 3y = 5d + 7

y(c - 3) = 5d + 7

y = (5d + 7) / (c - 3)
8 0
3 years ago
Read 2 more answers
Pleaseeee helpp answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
Pavel [41]

Answer:

x = 87º

Step-by-step explanation:

opposing angles in quadrilaterals are equal, so x = 87º

5 0
3 years ago
Read 2 more answers
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