MATHEMATICS MIDDLE SCHOOL

A metal recycling center pays $41.25 for 75 pounds ofaluminum. Which of the following is another possible amount
the metal recycling center would pay for aluminum?
A. $19.25 for 35 pounds
B. $24.00 for 40 pounds
C. $5.35 for 0.25 pounds
D. $45.45 for 25 pounds

Answers

Answer 1
Answer:

Answer:

A

Step-by-step explanation:

$41.45 / 75 = .55

A= $19.25/ 35 = .55

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Elle can buy 2 quarts of milk for $3 or 1 gallon of milk for $3, Which Is The Better Deal.... Because Im not sure..

Answers

1 gallon is equal to 4 quarts. 

So you can either get 2 quarts for $3, or 4 quarts for 3$

1 gallon is the better deal.
1 gallon is bigger because 4 quartz make a gallon and if yku get 2 quartz you will get half a gallon

What is the sum of 3/4 and 18/19

Answers

If you add them togeter just like making your t-charts

Ex1

3/4 18/19. List the factors of 19 and 4 if you subtract you have to find the GCF that will be on the bootom then do it to the top
3/4 + 18/19
(57+72) / 76
129 / 76

12.5 is 25% of what number

Answers

12.5 is 25% of x
percent means parts out of 100
25%=25/100=1/4
12.5=1/4 of a number
mulitply both sides by 4
50=number

the number is 50
Since 25% is 1/4 of 100%, then you do 12.5 times 4 to get 50.

Can someone help me with this pattern? And the rule.

Answers

Each output is (double the input) plus 1 .

Three vertices of a rectangle are (–2, 1), (–2, –3), and (4, –3)What are the coordinates of the fourth corner point of the rectangle


A.(-2,4)

B.(-3,4)

C.(4,1)

D.(4,3)

Answers

the answer is C
it's easier if you graph it
we know that the x of the unknown vertice is 4, because this is a rectangle and that vertices has to be on the same x line as the point below.
y of the unknown vertice has to be 1 because the vertice to the left needs to be on the same y line as the unknown vertice

Find an equivalent system of equations for the following system: 3x + 3y = 0 −4x + 4y = −8 3x + 3y = 0 7x − y = 8 3x + 3y = 0 −7x − y = 8 3x + 3y = 0 −7x + 7y = 8 3x + 3y = 0 −4x + 7y = 8

Answers

Answer:

A.

3x + 3y = 0

7x − y = 8

Step-by-step explanation:

Given

3x + 3y = 0

-4x + 4y = -8

Required

Find the equivalent

To solve for the equivalent we simply solve for x and y in the given equation.

Subtract 3x from both sides in 3x + 3y = 0

3x - 3x + 3y = 0 - 3x

3y = -3x

Multiply both sides by ⅓

⅓ * 3y = -3x * ⅓

y = -x

Substitute -x for y in -4x + 4y = -8

-4x + 4(-x) = -8

-4x -4x = -8

-8x = -8

Multiply both sides by -⅛

-⅛ * -8x = -⅛ * -8

x = 1

Recall that y = -x

y = -1

So, we have that x = 1 and y = -1

We'll substitute these values in the list of options;

A.

3x + 3y = 0

7x − y = 8

7(1) - -(1) = 8

7 + 1 = 8 ----- This is equivalent

B.

3x + 3y = 0

−7x − y = 8

-7(1) - (-1) = 8

-7 + 1 = 8

-6 ≠ 8 .... This is not an equivalent expression

C.

3x + 3y = 0

−7x + 7y = 8

-7(1) + 7(-1) = 8

-7 -7 = 8

-14 ≠ 8 .... This is also not an equivalent expression

D.

3x + 3y = 0

-4x + 7y = 8

-4(1) + 7(-1) = 8

-4 -7 = 8

-11 ≠ 8 -_- This is also not an equivalent expression

Answer:

A is the correct one

Step-by-step explanation:
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