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3 years ago

Writing to Explain How could you show the inverse operation of Exercise 5 above?

1 answer:

6 0

To figure this out, you can do 66/11, which is 6. 54/9 is 6, and 42/7 is also 6. I hope this helps, I can explain more if you need me too.

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Identify all the prime numbers within each range of numbers given below (inclusive): a. 4 to 11 and b.) 16 to 25

scZoUnD [109]

Answer:

A. 5, 7, 11; B: 17, 19, 23

Step-by-step explanation:

These are all the numbers that don't have common factors besides one and itself

5 star, thank, and brainliest if helpful!

8 0

3 years ago

A building supply company sells sand by the cubic yard. The price of one cubic yard of sand is $33.75. What do you think the pri

myrzilka [38]

Answer:

Step-by-step explanation:

We know:

1 yd = 3 feet

So, 1 cubic yards should be *THREE* times the power of what the initial scale factor is, 3 cubed. That would make it:

1 yd = 3 feet

1^3 yd = 3^3 feet

1 cu. yd. = 27 cu. ft.

That means, the price of 1 cubic feet of sand is 27 times of the price of 1 cubic yd price

33.75 * 27 = <u>$911.25</u>

5 0

4 years ago

Use a 30degrees and -60degrees right triangle to find the exact value of the following trigonometric expression. Cot 30 degrees=

LuckyWell [14K]

The dirty little secret about trig is students mostly just need to understand the 45/45/90 right isosceles triangle and the 30/60/90 triangle, which is half an isosceles triangle.

I'm sure you have seen it many times already, so I'll remind you in the 30/60/90 right triangle the sides opposite those angles are respectively in the ratio $1: \sqrt{3}:2$ . Remember the smallest side is always opposite the smallest angle, etc. These make a right triangle because

$1^2 + \sqrt{3}^2 = 2^2$

So in this hypotenuse 2 triangle, the length 1 side is opposite the 30 degree angle and the $\sqrt{3}$ side is adjacent to it.

We could jump right to the answer but let's enumerate all the trig functions. Really you should memorize the sine and cosine so you can get these quickly.

$\cos 30^\circ = \dfrac{ \textrm{adjacent} }{ \textrm{hypotenuse} } = \dfrac{\sqrt{3}}{2}$

$\sin 30^\circ = \dfrac{ \textrm{opposite} }{ \textrm{hypotenuse} } = \dfrac{1}{2}$

$\tan 30^\circ = \dfrac{ \textrm{opposite} }{ \textrm{adjacent} }= \dfrac{1}{\sqrt{3}} =\dfrac{\sqrt{3}}{3}$

$\cot 30^\circ = \dfrac{ \textrm{adjacent} }{ \textrm{opposite}} = \dfrac{\sqrt{3}}{1} =\sqrt{3}$

$\sec 30^\circ = \dfrac{ \textrm{hypotenuse} }{ \textrm{adjacent}}= \dfrac{2}{\sqrt{3}}$

$\csc 30^\circ = \dfrac{ \textrm{hypotenuse} }{ \textrm{opposite}}= \dfrac{2}{1} = 2$

We want the cotangent, another way to get it is

$\cot 30^\circ = \dfrac{\cos 30^\circ}{\sin 30^\circ} = \dfrac{\sqrt{3}/2}{1/2} = \sqrt{3}$

8 0

3 years ago

Read 2 more answers

Brad had $10 to spend at Ruby’s. 1/2 pound of sausage and 1 1/2 pound of chicken. How much money did brad have laft after he pay

lesantik [10]

He had $4 left after he ordered :]

6 0

3 years ago

The shelter has 90 dogs and 150 cats. of these animals 9 dogs and 27 cats receive medication. What percentage of animals receive

krek1111 [17]

3% because If you divide 27/9

4 0

4 years ago