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nexus9112 [7]
3 years ago
13

What is the solution to this system of equations: y=5x+10 and y=-3x+90?

Mathematics
1 answer:
KonstantinChe [14]3 years ago
4 0

Answer:

x=88

y=420

Step-by-step explanation:

Multiply the first equation by 3 and the second by 5 to cancel out.

y=15x+30\\y=-15x+450\\y=420\\

Now plug y into one of the original equations.

y=5x+10\\450=5x+10\\440=5x\\x=88

Hope this helps! <3

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What's the solution for (9x + 5) - (4x + 3) ?
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2 years ago
Courtney walks 1 mph slower than Brandi does. In the time that it takes Brandi to walk 6.5 mi, Courtney walks 5 mi. Find the spe
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Answer:

Courtney's walking speed = 3.33mph

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Step-by-step explanation:

Let x = Courtney's walking speed

then

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3 years ago
The area of this rectangle is 4x2
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