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Colt1911 [192]
2 years ago
8

To eliminate the y terms and solve for x in the fewest steps, by which constants should the equation need multiplied by before a

dding the equations together?

Mathematics
1 answer:
ivanzaharov [21]2 years ago
3 0
A. Multiplied by 2 for the first then for the second multiply by three.

Explanation: the equations already have opposite signs for y so reversing the signs would be counterproductive. (Eliminates B and D) and the easiest way is to get the numbers before the Y variable to be the same. The top by 2 and bottom by 3 would do that, leaving only A.
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Sybil has 1/2 of a pizza left over. She wants to share the pizza with 3 of her friends. What fraction of the original pizza will
Helen [10]

Answer: \frac{1}{2\times3}=\frac{1}{6}\text{ of the original pizza.}


Step-by-step explanation:

Given: Sybil has 1/2 of a pizza left over.

If she share the pizza with 3 of her friends, to find the fraction of the original pizza will Sybil and her 3 friends each receive, we need to divide 1/2 by 3 we get

The  fraction of the original pizza will Sybil and her 3 friends each receive

=\frac{\frac{1}{2}}{3}=\frac{1}{2\times3}=\frac{1}{6}\text{ of the original pizza.}



6 0
3 years ago
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Suppose a seventh graders birthday is today, and she is 12 years old. How old was she 3 1/2 years ago? Write an equation, and us
german

Answer:

he age of girl 3 \frac{1}{2} years ago is 8.5 years  .

Step-by-step explanation:

Given as :

The present age of seventh grader girl = 12 years

Let The age of her 3 \frac{1}{2} years ago = x years

So The age of girl \frac{7}{2} years ago = x years

<u>Now, According to question</u>

The age of girl 3.5 years ago = 12 - 3.5

Or,  The age of girl 3.5 years ago = 8.5 years

Hence The age of girl 3 \frac{1}{2} years ago is 8.5 years  . Answer

4 0
3 years ago
X – 7y=-1<br> -X + 9y = 3
Aleks04 [339]

Answer:

y=1

x=6

Step-by-step explanation:

just move -7y and x=-1+7y

-(-1+7y)+9y=3

1-7y+9y=3

2y=2

y=1

x-7=-1

x=6

7 0
3 years ago
A company is looking to design a new cover for their smartphone. The scale drawing of the design is shown below. The coordinates
Galina-37 [17]
No; the corresponding sides are not proportional.
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3 years ago
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A shirt with the cost price $80 was discounted by 10% what is the amount of the discount and what is the discounted price of the
Sophie [7]

Answer:

72.00

Step-by-step explanation:

umm cant really explain

7 0
3 years ago
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