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Simora [160]
3 years ago
5

Janelle flies her kite several feet in the air. She then reels the kite in at a constant number of feet per minute. The equation

y=-18+ 240 represents this situation, where x is the number of minutes and y is the height of the kite in the air. What does the number -18 in the equation represent?
A. The kite is 18 feet above the ground before Janelle starts reeling it in.

B. The kite ascends 18 feet per minute.

C.The kite descends 18 feet per minute.

D.The kite is 18 feet above the ground after Janelle is done reeling it in.​
Mathematics
1 answer:
pashok25 [27]3 years ago
4 0
The correct answer is is B
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2 years ago
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Answer:

(1,-1)

Step-by-step explanation:

We can solve the system by using substitution.

In order to do this we must make x the subject in the first equation.

We can do this by simply subtract 2y from both sides

x + 2y = -1

subtract 2y from both sides

x + 2y - 2y = -1 - 2y

simplify

x = -2y - 1

now that we have made x the subject in one of the equations we can plug in (or substitute) the value of x into the other equation

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x = -2y - 1

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We can then solve for y

2(-2y - 1) - 3y = 5

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combine like terms -4y + -3y

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add 2 to both sides

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divide both sides by -7

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x + 2y = -1

y = - 1

x + 2(-1) = -1

multiply 2 and -1

x + -2 = -1

add 2 to both sides

x = 1

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