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worty [1.4K]
3 years ago
11

Describe the steps you would use to solve the equation 2(4x - 5) + 11 = -63.

Mathematics
2 answers:
DedPeter [7]3 years ago
8 0

Answer:

x = -8

Step-by-step explanation:

You would solve the parenthesis first by distrubuting the two to the things inside the parenthesis:

2 times 4x and 2 times -5

Once you multiply the 2 to each of the numbers the parenthesis are no longer needed.

8x - 10 + 11 = -63

Next you would want to simplify the -10 and 11

-10 + 11 = 1

Now you have simplified the the -10 and 11 and have gotten 1

8x + 1 = -63

Now you want to subtract the one on both sides in order to get it the variable by itself.

-1 + 8x + 1 = -63 -1

The one on the left side would then cancel out and 8x would be left on the left. And for the irght side you would combine the -63 and -1 to make -64.

8x = -64

Now you have to get the variable by itself and divide by 8 on both sides to cancel the 8 on the left side out. And when you do that you should get.

x = -8

goblinko [34]3 years ago
6 0
If u use the app photomath it will give u answer with the steps too
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Answer:

7/12

Explanation:

Here are the steps to follow:

Write down the factors for the numerator and the denominator.

Determine the largest factor that is common between the two.

Divide the numerator and denominator by the greatest common factor.

Write down the reduced fraction.

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3 years ago
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Need now<br><br>find the discriminant of the following equation. 9x^2+12x+4=0
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So to find the discriminant of a quadratic equation, the formula is b² - 4ac with a = x² coefficient, b = x coefficient, and c = constant. In this case, our equation is 12^2-4*9*4

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Next, subtract and we find that our discriminant is 0.

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3 years ago
The price of a computer is marked down from $550 to $484 for a sale. The
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A) $425.92

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Ryan and Marie had some marbles. if Ryan lost `15 marbles, he would have 4 times as many marbles as Marie. If Ryan lost 75 marbl
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Ryan's marbles   =  x
Marie has 4 times less marbles then Ryan would have if he lost 15 marbles (it means he would have x-15)
So, Marie marbles  =  (x-15):4
If Ryan lost 75 marbles (it means he would have x-75), he would have 1 1/2 times as many marbles as Marie.

We got an equation:                                  x-75=1\frac{1}2\cdot\frac{x-15}{4}

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Multiply both sides by 8:                            8x-8\cdot75=3\cdot(x-15)

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Add 600 and subtract 3x on both sides:    5x=555

Divide both sides by 5:                               x=111


Answer:    Ryan have 111 marbles.

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