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3 years ago

6. If F(x) = -6(2x2 + 5x) - 9, what is the value of F(-4)?

Mathematics

1 answer:

Soloha48 [4]3 years ago

5 0

Answer:

-81

Step-by-step explanation:

-6(2x² + 5x) - 9

substitute -4 for 'x'

-6[2(-4)² + 5(-4)] - 9

-6[2(16) + (-20) - 9]

-6(32 - 20) - 9

-6(12) - 9

-72 - 9 = -81

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Hi!

solniwko [45]

Answer:

$y = 1x - 4$

Step-by-step explanation:

You have to solve for the x intercept on the equation

$2x-5y=8\\2x-5(0)=8\\2x=8\\x=4\\(4,0)$

That is the x intercept for that equation.

Then solve for the y intercept on the equation

$4x-3y=12\\4(0)-3y=12\\-3y=12\\y=-4\\(0,-4)$

That is the x intercept for that equation.

Use that to find slope for point slope form

$\frac{y_{2}-y_{1}}{x_{2}-_{1}} \\\\\frac{-4-0}{0-4} \\\\\frac{-4}{-4} \\\\1$

1 is the slope

and slope makes B the y intercept so the equation is

$y = 1x - 4$

8 0

3 years ago

Justify x over 3 minus 7 equals 11

drek231 [11]

Answer:

54/3-7=11

Step-by-step explanation:

x/3<u>-7=11</u>

+7 +7

(3)x/3=18(3)

x=54

Check

54/3-7=11

18-7=11

11=11

4 0

3 years ago

How do I solve 8x+5y=-20 ?

Vlad [161]

Answer: y=-8/5x-4

Step-by-step explanation:

8x+5y=-20

-8x -8x

5y=-8x-20

/5 /5

y=-8/5x-4

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rusak2 [61]

Answer:

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Step-by-step explanation:

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jenyasd209 [6]

Answer:

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Step-by-step explanation:

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2 years ago

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