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seropon [69]
3 years ago
15

An unknown number y is 12 more than an unknown number x. The number y is also x less than 17. The equations to find x and y are

shown below.
y = x + 12
y = −x + 17

Which of the following statements is a correct step to find x and y? (4 points)

a
Multiply the equations to eliminate y.

b
Write the points where the graphs of the equations intersect the x-axis.

c
Write the points where the graphs of the equations intersect the y-axis.

d
Add the equations to eliminate x.
Mathematics
2 answers:
MakcuM [25]3 years ago
7 0

Answer:

the answer is D even tho you asked a month ago i figured i can still answer

Step-by-step explanation:

grandymaker [24]3 years ago
4 0

Answer:

d because then you can solve for y then use your answer to find x

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Answer:

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Step-by-step explanation:

First calculate BD using sine ratio in Δ BCD and the exact value

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sin60° = \frac{opposite}{hypotenuse} = \frac{BD}{BC} = \frac{BD}{12} = \frac{\sqrt{3} }{2} ( cross- multiply )

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tan30° = \frac{1}{\sqrt{3} } , thus

tan30° = \frac{opposite}{adjacent} = \frac{AD}{BD} = \frac{AD}{6\sqrt{3} } = \frac{1}{\sqrt{3} } ( cross- multiply )

\sqrt{3} AD = 6\sqrt{3} ( divide both sides by \sqrt{3} )

AD = 6 → B

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