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Hoochie [10]
3 years ago
9

I need help with number 4

Mathematics
1 answer:
Andrews [41]3 years ago
8 0
That one is really blurry
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Grace is painting her room. She created a mixture with 2 cups of blue paint for every 3 cups of white. If she decides to make a
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The answer is 3. If you find the unit rate of white to blue paint and multiply it by 4.5 it would come out to 3.000007 or something minute like that.

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Yuri purchased 8 trees to have planted at his house. The store charged a delivery fee of $5 per tree.The total cost of the trees
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The area of a rectangle is 336 square inches. If the width of a rectangle is 6 inches. What is the length of the rectangle?
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The length of the rectangle is 56

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Ashley's mother tells her to see 3/5 of her dollar how much is that
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Your answer will be D 0.60

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5 0
3 years ago
I need help seeing what I did wrong
Makovka662 [10]

Answer:  The two roots are x = 3/2 and x = -2

=========================================================

Explanation:

You have the right idea so far. But the two numbers should be 3 and -4 since

  • 3*(-4) = -12
  • 3+(-4) = -1

The -1 being the coefficient of the x term.

This means you need to change the -3x and 4x to 3x and -4x respectively. The other inner boxes are correct.

---------

Refer to the diagram below to see one way to fill out the box method, and that helps determine the factorization.

If we place a 2x to the left of -2x^2, then we need an -x up top because 2x*(-x) = -2x^2

Then based on that outer 2x, we need a -2 up top over the -4x. That way we get 2x*(-2) = -4x

So we have the factor -x-2 along the top

The last thing missing is the -3 to the left of 3x. Note how -3*(-x) = 3x in the left corner and -3*(-2) = 6 in the lower right corner.

We have the factor 2x-3 along the left side.

---------

The two factors are (2x-3) and (-x-2) which leads to the factorization (x+3)(-x+2)

The last thing to do is set each factor equal to 0 and solve for x

  • 2x-3 = 0 solves to x = 3/2 = 1.5
  • -x-2 = 0 solves to x = -2

The two roots are x = 3/2 and x = -2

8 0
3 years ago
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