There are 84 grapes in a bag. Four friends are sharing the grapes. Write an equation that can be used to find out how many grapes g each friend will get if each friend gets the same amount of grapes.

Answer:

7.351

I don't know how they have rounded; the closest answer is A

Step-by-step explanation:

The only way I know to do this is with the cos law

y^2 = x^2 + z^2 - 2*x*z cos(Y)

x = 22

z = 16

y = ?

I have serious doubts that this will make a triangle. I ran it though a calculator and it does work -- surprise for me. Substitute the givens.

y^2 = 256 + 484 - 2*10*22*cos(13)

y^2 = 740 - 704*cos(13)

y^2 = 740 - 704*0.9744

y^2 = 740 - 685.95

y^2 = 54.05                                       Take the square root of both sides

y = √54.05

y = 7.351

Answer:

7.4

Step-by-step explanation:

The information given is in from SAS.

This is a job for law of cosines.

This is the law of cosines

The angle A is opposite side a and b,c are the other sides.

So 13 degrees is opposite the y there.

Now I'm going to put 16^2+22^2-2*16*22*cos(13) in my calculator:

Now one more step. To get rid of the square, you need to square root both sides:

Sp the answer is approximately 7.4

The percentage of questions Matt has answered is 80 %

What is Percentage?

A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, %

Given data ,

Number of questions Matt has answered = 20

Total number of questions = 25

Let the percentage of questions Matt has answered = x

Number of questions Matt has answered / Total number of questions = x %

Percentage of questions Matt has answered = ( Number of questions Matt has answered / Total number of questions ) / 100

                                                                    x    = ( 20 x 100 ) / 25

                                                                    x    = 20 x 4

                                                                    x    = 80 %

Hence, the percentage of questions Matt has answered is 80 %

To learn more about percentage click :
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Answer:

A. -34.5>x

Step-by-step explanation:

The area is shaded below -34.5, so we know that x has to be less

Answer:

-0.78

Step-by-step explanation:

you would round the number up after you divide.

Answer: -0.77777777777778 or -0.77

Step-by-step explanation: you would divide the numerator by the denominator; you would divide 7 by 9 and get 0.77 then just add the negative sign in front of the zero.