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Makovka662 [10]
1 year ago
12

Use the triangle to answer the question.Find the value of x. Round to the nearest degree.

Mathematics
1 answer:
AlexFokin [52]1 year ago
5 0

Given:

base = 16

hypotenus = 21

\cos \theta=\frac{base}{hypotenus}

Angle = x

\begin{gathered} \cos x=\frac{16}{21} \\ \cos x=0.76 \\ x=\cos ^{-1}(0.76) \\ x\approx40 \end{gathered}

The value of x is 40 degree.

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Please help me I don’t know how to solve it and will mark brainiliest
Sindrei [870]

Answer: One plain roll is 4 dollars and one shiny roll is 6 dollars.

Step-by-step explanation:

lets start by saying

rolls of plain wrapping paper = x

rolls of shiny wrapping paper = y

Kathryn sold 4 plain rolls and 3 shiny rolls for 34 dollars.

4x+3y=34

Eugene sold 4 plain rolls and 2 shiny rolls for 28 dollars

4x+2y=28

Both equations will look like this.

4x+3y=34

-1(4x+2y)=(28)-1

we can multiply the second equation by -1 to get y alone. (doesn't matter which equation). Once you do that, the positive 4x and the negative 4x cancel out, 3y-2y=1y and 34-28=6. you are left with

1y=6 so one shiny roll is 6 dollars.

now use that price to find the cost of the plain roll.

lets use Kathryn's equation

4x + 3(6)=34

4x + 18= 34

      -18  -18

4x=16. Divide by 4 to find cost of one plain roll.

16÷4=4. One plain roll costs 4 dollars.

Lets check. Using Kathryn's equation,

4(4) + 3(6)=34

16+18=34

34=34. We are right.

3 0
3 years ago
HELP ME WRITE AN EQUATION FOR THIS GRAPH
kramer

Answer:

lol

Step-by-step explanation:

3 0
3 years ago
Distribute 5(2x-4y+8z)
Cloud [144]

Answer: Hello! After being distributed, your answer should be 10x-20y+40z, hope this helps!

Step-by-step explanation: First multiply 5 and 2x and get 10x, then multiply 5 and 4y and get 20y, and lastly, multiply 5 an 8z and get 40z!

6 0
3 years ago
Can someone help me please
jenyasd209 [6]

<u>Answer:</u>

Multiply \frac { 3 } { 4 } by 8.

<u>Step-by-step explanation:</u>

We are given the following expression and we are to find its quotient:

\frac { 3 } { 4 } ÷ \frac { 1 } { 8 }

This can also be written as:

\frac{\frac{3}{4}}{\frac{1}{8} }

Since the two fractions are being divided so to change this division sign into a multiplication sign, we will take the reciprocal of the fraction in the denominator and multiply 3/4 by 8.

\frac{3}{4} \times 8 = 6

3 0
3 years ago
Read 2 more answers
There are 350 students at GMS. if 14 students were absent, what percent is THERE
artcher [175]
I hope this helps you



if in 350 students are 14 students were absent



in 100 students are ?



?.350=100.4


?=400/360


?=1.14%
4 0
3 years ago
Read 2 more answers
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