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Oksana_A [137]
3 years ago
7

Which is the solution to the equation -3x-4=5(x+4)

Mathematics
2 answers:
Lorico [155]3 years ago
6 0

Step 1. Expand

-3x - 4 = 5x + 20

Step 2. Add 3x to both sides

-4 = 5x + 20 + 3x

Step 3. Simplify 5x + 20 + 3x to 8x + 20

-4 = 8x + 20

Step 4. Subtract 20 from both sides

-4 - 20 = 8x

Step 5. Simplify -4 - 20 to -24

-24 = 8x

Step 6. Divide both sides by 8

-24/8 = x

Step 7. Simplify 24/8 to 3

-3 = x

Step 8. Switch sides

x = -3

ratelena [41]3 years ago
4 0
X=-3..................
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Which shows all the critical points for the inequality x2-4/x2-5x+6<0
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Answer:

x = ±2, 3 are the critical points of the given inequality.

Step-by-step explanation:

The given inequality is \frac{(x^{2}- 4)}{x^{2}-5x+6}

To find the critical points we will equate the numerator and denominator of the inequality to zero.

For numerator,

x^{2}-4=0

(x - 2)(x + 2) = 0

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For denominator,

x² - 5x + 6 = 0

x² - 3x -2x + 6 = 0

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Therefore, critical points of the inequality are x = ±2, 3 where the sign of the inequality will change.

7 0
3 years ago
15. Write the slope-intercept form of the line described in the following:Parallel to 4x + 5y=20and passing through (12,4)
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Problem

Write the slope-intercept form of the line described in the following:

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Solution>

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and we also know a point given x= 12, y= 4 and we can do the following:

4 = -4/5 (12) +b

4 = -48/5 + b

And if we solve for the intercept we got:

b= 4 +48/5= -28/5

And our equation would be given by:

y = -4/5 x -28/5

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1 year ago
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Step-by-step explanation:

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Simplify (7xy)^2 ????
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Answer:

Simplify the expression.

49 x2y2

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