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Naddik [55]
3 years ago
9

Solve this system of equations by graphing. First graph the equations, and then type the solution.

Mathematics
1 answer:
stealth61 [152]3 years ago
5 0

Answer:

The solution is the point (1,-4)

Step-by-step explanation:

we have

y=-3x-1 ----> equation A

y=-2x-2 ----> equation B

we know that

The solution of the system of equations by graphing is the intersection point both graphs

using a graphing tool

The intersection point is (1,-4)

see the attached figure

therefore

The solution is the point (1,-4)

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Read 2 more answers
Theo made a donation to a charity. His grandfather agreed to add$4.00 to Theo's donation amount and then donate half of the sum.
lisov135 [29]

Answer:

The needed equation is:4.25  =( \frac{p+4}{2} )

The amount of Theo's donation  =  $ (4.5)

Step-by-step explanation:

Let us assume the amount of Theo's donation  = $ p

Now, his grandfather added $4 to the donation.

So, the New amount  = Theo's amount  +  Grandfather's share

                                   = $p +  $ 4 = $ (4 +p)

Again, the half of the total amount  = (\frac{4 +p}{2})

So, the amount donated to the charity =  (\frac{4 +p}{2})

But according to the question, amount donated = $4.25

\implies 4.25  =( \frac{p+4}{2} )\\\implies 4.25 \times 2  = p+ 4\\\implies  p +  4  = 8.5\\\implies  p =  8.5 - 4  = 4.5\\\implies p = 4.5

Hence, the amount of Theo's donation  = $ p   = $ (4.5)

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3 years ago
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