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3 years ago

Answer please, i really need help :3

Mathematics

1 answer:

kap26 [50]3 years ago

6 0

1. I think is 144 degrees

2. I think is 150 degrees

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Simplify the expression: cot x sin x - sin quantity pi divided by two minus x. + cos x

podryga [215]

$\cot x= \frac{\cos x}{\sin x} \\ \sin ( \frac{ \pi }{2}-x)=\cos x \\ \\ \cot x \sin x-\sin( \frac{ \pi }{2}-x) +\cos x= \\ \frac{\cos x}{\sin x} \sin x- \cos x+ \cos x= \\ \cos x- \cos x+ \cos x = \\ \cos x \\ \\ \ \cot x \sin x-\sin( \frac{ \pi }{2}-x) +\cos x= \cos x$

3 0

3 years ago

A rectangular prism has a length of 20 centimeters, a height of 10 centimeters, and a width of 20 centimeters. What is its volum

Aliun [14]

Answer: 4000 cm^3

Step-by-step explanation:

The volume of a rectangular prism is the length*width*height.

We can plug in the values given:

Volume = 20 cm * 20 cm * 10 cm

Volume = 4000 cm^3

7 0

3 years ago

In the last 20 years, an initial population of 24 pumas in a state park grew by about 12% per year. How many pumas were in the p

-BARSIC- [3]

Answer:

165 pumas

Step-by-step explanation:

Using the formula given:

$n = a(1 + r)^t$

where n = number of pumas after a specific number of years

a = initial number of pumas = 24

r = rate = 12% = 0.12

t = number of years = 17

We obtain the number of pumas after 17 years to be:

$n = 24 *(1 + 0.12)^{17}\\\\\\n = 24*(1.12)^{17}\\\\\\n = 24 * 6.866$

$n = 164.78$ ≅ 165 pumas

After 17 years, the number of pumas in the park was 165.

7 0

3 years ago

Which expression does not belong? <br><br><br><br> (2c−d)(2c−d) (2c+d)(2c−d) (2c+d)(2c+d) (c+d)(c+d)

zlopas [31]

Answer:

It could be any of them.

Step-by-step explanation:

First off, It could be said that (2c-d)(2c-d) doesn't belong because it includes two subtractions signs and none of the others do.

Secondly, It could be said that (2c+d)(2c-d) doesn't belong because it includes one subtraction sign and one addition sign and none of the others do.

Thirdly, It could be said that (2c+d)(2c+d) doesn't belong because it includes two addition signs, and none of the others do.

Finally, it could be said that (c+d)(c+d) doesn't belong because it doesn't have a multiplying factor of 2 within the parentheses.

I hope this helps :)

4 0

3 years ago

A cook places a pan of food on a hot stove and leaves it there. When the food is just about done cooking, which of the following

BaLLatris [955]

Answer:

The pan will be the same Temperature as the stove

Step-by-step explanation:

4 0

3 years ago