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2 years ago

Using elimination method, what will be the value of y after solving -x - y = 5 and -x + 4y = 15?

Mathematics

1 answer:

natka813 [3]2 years ago

4 0

9514 1404 393

Answer:

y = 2

Step-by-step explanation:

The variable x can be eliminated by subtracting the first equation from the second.

(-x +4y) -(-x -y) = (15) -(5)

5y = 10 . . . . . . . simplify

y = 2 . . . . . . . . . divide by 5

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A right triangle has side lengths 7, 24, and 25 as shown below.

elixir [45]

Answer:

SinL = 7/25

CosL = 24/25

TanL = 7/24

Step-by-step explanation:

Find the diagram attached.

Using SOH CAH TOA in trigonometry identity to find the sinL, cosL and TanL

Note that the hypotenuse is the longest side = 25

The opposite will be the side facing the acute angle L

Opposite = 7

Adjacent = 24

For SinL

sinL = Opposite/Hypotenuse {SOH}

SinL = 7/25

For cosL:

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For tanL:

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2 years ago