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Bumek [7]
4 years ago
13

Check all of the following that are solutions to the system shown below.

Mathematics
1 answer:
loris [4]4 years ago
5 0
From second equation y = -2-x

Plug this into the first equation:-

- 2 - x = -x^2 - x + 2

x^2 + x - 2 - 2 - x = 0

x^2 - 4 = 0

x^2 = 4

x + +/- 2

Plug these values into x + y = -2 :-
x = 2:- 
2 + y = -2   

so y = -4 

so one solution is (2,-4)

Now try x = -2

- 2 + y = -2

y = 0 

so the second solution is ( -2 , 0)

So A and C  are correct
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The sum of two numbers is 75. The second number is 3 less than twice the first
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\large{\textbf{The two numbers are: 26 and 49}.\\}

Step-by-step explanation:

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Find the area of the figure.
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Jeri's lawn service charges an initial fee of $4.50 plus $3 an hour. If she is asked to
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Answer:

5 hours 22 minutes

Step-by-step explanation:

Let us represent the number of hours that Jeri worked as: h

Jeri's lawn service charges an initial fee of $4.50 plus $3 an hour

= $4.50 + $3 × h

= $4.50 + 3h

If she is asked to start before 7 a.m. Jeri charges 1.5 times the regular amount.

= 1.5 × ($4.50 + 3h)

If she made $29.25 on a job that began at 5 am, how many hours did Jeri work?

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