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1 year ago

What is the answer to: -4(2x+2) <-40

Mathematics

1 answer:

mars1129 [50]1 year ago

5 0

Answer: x > 6

Step-by-step explanation: -4(2x+2) < -40

-8x - 8 < -40

+8 +8

-8x < 48

/-8x /-8x

x > 6 *The less than sign got flipped to a greater than sign because we divided by a negative.

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16 - x = -2 solve for x

poizon [28]

Answer:

16 - x = -2

16 + 2 = x

x = 18

hope it helps!

4 0

2 years ago

If f(x) = -8 - 5x, what is f(-4)

Mashcka [7]

Answer:

f(- 4) = 12

Step-by-step explanation:

To evaluate f(- 4) substitute x = - 4 into f(x) , that is

f(- 4) = - 8 - 5(- 4) = - 8 + 20 = 12

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2 years ago

Read 2 more answers

Round the number 246.13687 to the nearest thousandth

sashaice [31]

Answer:

246.137

Step-by-step explanation:

246.13687 ≈ 246.137 (rounded to the nearest thousandth)

7 0

3 years ago

I need a answer to equation -2x=8

valkas [14]

Answer:

x = -4

Step-by-step explanation:

Divide both sides by -2.

x= - 8/2

Simplify - 8/2 to -4.

4 0

3 years ago

What is the determinant of 15 18 154

IgorC [24]

Answer:

The determinant is 15.

Step-by-step explanation:

You need to calculate the determinant of the given matrix.

1. Subtract column 3 multiplied by 3 from column 1 (C1=C1−(3)C3):

$\left[\begin{array}{ccc}-25&-23&9\\0&3&1\\-5&5&3\end{array}\right]$

2. Subtract column 3 multiplied by 3 from column 2 (C2=C2−(3)C3):

$\left[\begin{array}{ccc}-25&-23&9\\0&0&1\\-5&-4&3\end{array}\right]$

3. Expand along the row 2: (See attached picture).

We get that the answer is 15. The determinant is 15.

6 0

3 years ago