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3 years ago

I need these questions done triginometry

Mathematics

1 answer:

ira [324]3 years ago

4 0

Answer:

Step-by-step explanation:

3. 9 feet high

sin(30) = h/18

h = 9

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Explain how you find it

aliina [53]

Answer:

x = 39

Step-by-step explanation:

there is a theorem that states that the midsegment in a trapezoid is equal to the sum of the bases divided by two

so, (36 + 42)/2 = x

36 + 42 = 78

78/2 = 39

8 0

3 years ago

Which data sets have outliers? Check all that apply.

MissTica

Answer:

the answer is c and e

Step-by-step explanation:

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5 0

3 years ago

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Determine the equation of a circle with a center at (–4, 0) that passes through the point (–2, 1) by following the steps below.

Nikitich [7]

Answer:

C. (x + 4)² + y² = 5

Step-by-step explanation:

i just did it

6 0

3 years ago

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What is the surface area for this?

DanielleElmas [232]

It is 6 sq. units. I hope you do well. Have a wonderful day.

6 0

3 years ago

The scores on a psychology exam were normally distributed with a mean of 60 and a standard deviation of 10 . A failing grade on

tensa zangetsu [6.8K]

Answer:

The cutoff for a failing score was 40,

Approximately 2.3% of the students failed.

Step-by-step explanation:

Given,

Mean, $\mu=60$

Standard deviation, $\sigma=10$

Let x represents the cutoff for a failing score,

Thus, according to the question,

$\frac{x-\mu}{\sigma}=-2$

$\frac{x-60}{10}=-2$

$x-60=-20$

$x=-20+60$

$x=40$

Thus, the cutoff for a failing score is 40,

∵ P(<-2) = 0.02275 = 2.275 % ≈ 2.3 %

Hence, Approximately 2.3 % of the students failed. 

7 0

3 years ago