4 years ago

Explain how to solve 2x+9=15

Mathematics

1 answer:

wlad13 [49]4 years ago

5 0

Answer:

I hope it will help you :)

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3 years ago

the rectangular post shown at the right measures 2w-30 by w. the poster has an area of 5400 cm^2. what is The value of w ?

borishaifa [10]

Step-by-step explanation:

w(2w - 30) = 5400

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2w² - 30w - 5400 = 0

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3 years ago

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3 years ago

How many solutions does the system have? y=−2x+4

Anna11 [10]

Answer:

There is only one solution and the solution is (0,4).

Step-by-step explanation:

The given system has equations;

$y=-2x+4$

and

$y=x^2-2x+4$

We equate the two equations to determine their point of intersection;

$x^2-2x+4=-2x+4$

$\Rightarrow x^2-2x+2x+4-4=0$

$\Rightarrow x^2=0$

$\Rightarrow x=0$

We put x=0 into the first equation to get;

$y=-2(0)+4=4$

There is only one solution and the solution is (0,4).

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3 years ago

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