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2 years ago

If the equations 2x +y =7 and x-y=2are solved simultaneously, then y=_________

Mathematics

1 answer:

alisha [4.7K]2 years ago

7 0

Answer:

y = -2x + 7 and y = x - 2

Step-by-step explanation:

2x + y = 7

y = -2x +7

x - y = 2

-y = -x +2

y = x - 2

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6-√8 divide √2-1

agasfer [191]

Answer:

4 $\sqrt{2}$ +2

Step-by-step explanation:

$\frac{6-\sqrt{8}}{\sqrt{2}-1}$

= $\frac{6-\sqrt{8}}{\sqrt{2}-1}$ × $\frac{\sqrt{2}+1}{\sqrt{2}+1}$

= $\frac{(6-\sqrt{8})(\sqrt{2}+1)}{2-1}$

=6 $\sqrt{2}$ + 6 - $\sqrt{8}\sqrt{2}$ - $\sqrt{8}$

=6 $\sqrt{2}$ + 6 - 4 - $\sqrt{8}$

=6 $\sqrt{2}$ + 2 - $\sqrt{8}$

=6 $\sqrt{2}$ + 2 - 2

=4 $\sqrt{2}$ +2

for $\sqrt{8}$ = 2 $\sqrt{2}$ ,

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= ( $\sqrt{2}$ )^2 × $\sqrt{2}$

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3 years ago

A baseball team ordered 12 jerseys. Each jersey costs the same amount. The shipping cost for the jerseys was $3 and the total co

alexandr402 [8]

Answer:

The answer is D if you forgot the 3 between the = sign and the + sign

Step-by-step explanation:

I just did 12 x p + 3 = 99

You have to do this because 12 times the amount of jerseys ordered (p) plus the 3 dollars of extra shipping cost. That equals 99.

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3 years ago

Ify: 8% -2, which of the following sets represents possible inputs and outputs of

tangare [24]

Answer:

Step-by-step explanation:

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3 years ago

The question is below (This an order of operation question)

olga_2 [115]

Step-by-step explanation:

i am 90% sure this is correct

7 0

3 years ago

Read 2 more answers

Osceres

Igoryamba

Answer:

∠B = 12°

∠C = 180 - 48° = 132° ( straight line angle = 180)

Sum of angles of a triangle = 180°

180 = ∠A + ∠B + ∠C

180 = ∠A + 12 + 132

180 - 144 = ∠A

∠A = 36°

option B

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3 years ago

If the equations 2x +y =7 and x-y=2are solved simultaneously, then y=_________​

If the equations 2x +y =7 and x-y=2are solved simultaneously, then y=_________