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tensa zangetsu [6.8K]
4 years ago
12

If x+3y=7 and x-3y=1 what's y

Mathematics
1 answer:
vazorg [7]4 years ago
6 0

Subtract one equation from the other to eliminate <em>x</em> :

(<em>x</em> + 3<em>y</em>) - (<em>x</em> - 3<em>y</em>) = 7 - 1

6<em>y</em> = 6

<em>y</em> = 1

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Answer:the record low temperature in Alaska = -80°F

Step-by-step explanation:

Step 1

Let the temperature in Alaska be = x

such that  the temperature in Hawaii be -0.15 times temperature in Alaska = -0.15 x.

Step 2

IF the   record low temperature in Hawaii is 12°F.

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We know that

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Savatey [412]

Answer:

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Step-by-step explanation:

the equation is x = k / y

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5. When I sine an angle like 60°, it gives me a value like 0.866025403. What does this number represent?
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Answer:

See below

Step-by-step explanation:

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In the case of a unit circle, it’s the y-coordinate of the point where a 60° angle in the standard position intersects a unit circle and a right triangle is created from that.

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Answer:

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Step-by-step explanation:

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3 years ago
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