MATHEMATICS MIDDLE SCHOOL

Use the substitution method to solve the system of equation.choose the correct ordered pair. 2x+3y=29
x=4

Answers

Answer 1
Answer: I’m not sure if the 2 is counted in the equation or not

Since x=4, substitute it for x in the other equation

4+3y=29
3y=25
Y=8.333333333

2(4)+3y=29
8+3y=29
3y=37
y=12.33333333

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Adrian knows that the quotient of 0.75 divided by 0.8 is less than 1. He knows that the quotient of 0.8 divided by 0.75 is greater than 1.Explain how Adrian can know this without doing the division.

Answers

Hey There!

Adrian knows this because whenever you divide something less than the number you are dividing, in this case, then the quotient will be less than one. If you divide something that is greater than the number you are dividing, than in this case, the answer will be greater than one.

Have A Brainly Day!

126 is what percent of 200?

Answers

Answer:

Step-by-step explanation:

percent = 126/200 = 0.63 = 63%
the answer is 252 im pretty sure.

If i was born in 1983 how old would i be?

Answers

Take the current year and subtract is from the initial year, so
This year is 2016, your are trying to find age if born in 1983
             2016
           - 1983
         -------------
                  33
You would be 33 years old if you were born in 1983 as of 2016.
Either 32 or 33 years old depending on the exact date.

If the price of a purse increased from $45 to $54, what was the percent of increased

Answers

The percent of increase is 20%

Answer and the work is provided in the image attached.
54-45/45 x 100%
= 20%

Z-y+xz use x =2, y = -1, z = -3

Answers

Simple...

z-y+xz

x=2

y=-1

z=-3

Plug it in!

-3-(-1)+(2)(-3)

-3+1-6

-2-6

-8

Thus, your answer, -8.
z - y + x * z = ?
-3 - -1 + 2 * -3 =
-2 + -6 = -8

A cow is tethered to one corner of a barn, 10 feet by 10 feet, with a rope 100 feet long. What is the cows maximum grazing area?

Answers

Question???? Is the cow inside or outside of the barn?

We'll assume it is outside the barn because the inside is too easy.

---------------------------------

First we have an area that is 3/4 of a circle with a radius of 100 ft.

area=(3.14*100^2)*3/4=(3.14*10,000)*3/4=31,400*3/4=23,550 ft^2.

 

now we have a quarter circle with a raduis of 90 ft.

area=(3.14*90^2)/4=(3.14*8,100)/4=25,434/4=6,358.5 ft^2.

as an esimate of the remaining 2 slivers of 5*80+5*90=400+450=950 ft^2 (minus a tad)

adding up these pieces I get 23,550+6,358.5+950=30,858.5 ft^2 (minus the tad)

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What is y ? and how do you get it ?