2 years ago

Find the cosine of angel D.

Mathematics

1 answer:

brilliants [131]2 years ago

4 0

Answer:

60 degrees

Step-by-step explanation:

You can use this triangle in a Pythagorean Theory. It means that angles inside are 90 degrees, 60 degrees, and 30 degrees. It is bigger than angle E so it have to be 60 degrees.

Hope that I helped

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Image explains everything worth alot of points THANK YOU SO MUCH

maxonik [38]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Multiply: (x−5)(x−7) A x2−12x+35 B x2+2x+35 C x2+35 D x2+35x−12

ioda

Answer:

x^2 -12x+35

Step-by-step explanation:

(x−5)(x−7)

FOIL

first x*x = x^2

outer -7x

inner -5x

last -7*-5 = 35

Add them together

x^2 -7x-5x +35

x^2 -12x+35

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3 years ago

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Suppose that the area of a square is eight times its perimeter. find the length of a side of the square.

11Alexandr11 [23.1K]

We Know, perimeter of square = 4a
Area of square = a²

Now, A.T.Q,
8*4a = a²
32a = a²
a²/a = 32
a = 32

So, side should be 32

Hope this helps!

8 0

4 years ago

The test statistic of z equals negative 1.37 is obtained when testing the claim that p equals1 divided by 4. a. Using a signific

spin [16.1K]

Answer: a) critical value = 0.0853, b) we reject the null hypothesis.

Step-by-step explanation:

Since we have given that

z = -1.37

And the hypothesis are given below:

$H_0:p=\dfrac{1}{4}=0.25\\\\H_1:p\neq 0.25$

Since α = 0.01

since critical value = 0.0853

As we can see that 0.853 < 0.25.

so, we reject the null hypothesis.

Hence, a) critical value = 0.0853, b) we reject the null hypothesis.

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4 years ago

What will be the annual salary for a mechanic who works 40 hours per week for 52 weeks a year and makes $25.21 per hour? (Rememb

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$25.21 times 40 equals $1008.40 This is how much he makes a week.
1008.4 times 52 equals $52436.80
He makes $52436.80 a year.

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3 years ago