3 years ago

Please Help, I need to get a good grade!

1 answer:

7 0

First I subtracted all the terms in the second equation from the terms in the first one, eliminating all the x terms. that made finding y easy. Then I substituted the value for y into one of the equations to find x :)

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A formula is expressed as D= a(2+kt). Express k in terms of D,a, and t.

Yuri [45]

This is just rearranging terms, it gets kind of ugly though. Start by dividing both sides by a to get D/a=2+kt, next move the 2 over to the left to get (D/a)-2=kt, finally divide the whole expression by t to get ((D/a)-2)/t=k

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3 years ago

Is 2 a solution to 4x - 3

AlexFokin [52]

Answer:

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dusya [7]

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3 years ago

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posledela

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Because as seen in my solving you are seeing that when we subtract we can divide.I gave you the final answer of your equation.
Hope I help

3 0

3 years ago

How do I solve this?

aksik [14]

Multiply the first equation by 2
4x-6y=16

Then add the equations to eliminate x
4x-6y=16
-4x+5y=-10

-y=6
y-=6

Plug the y value in
2x-3(-6)=8
2x+18=8
2x=-10
x=-5

Final answer: (-5,-6)

4 0

3 years ago

Read 2 more answers