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3 years ago

I need to factor this equation: 2x^2-2x-12...

1 answer:

3 0

Factor 2x^2 −2x − 12
2x^2 − 2x − 12
=2(x+2)(x−3)
Answer:
2(x+2)(x−3)

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Can someone please help me?

Lostsunrise [7]

Answer:

The angle between the two sides of the right triangle is aproximately 31.003º.

Step-by-step explanation:

From image attached on question we infer that we need to find the angle between sides of lengths 6 (adjacent leg) and 7 (hypotenuse) in the right triangle. The angle can be found by means of this trigonometric ratio:

$\cos \alpha = \frac{6}{7}$

$\alpha = \cos^{-1} \frac{6}{7}$

$\alpha \approx 31.003^{\circ}$

The angle between the two sides of the right triangle is aproximately 31.003º.

7 0

3 years ago

If f(x) = <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D%20%2B3" id="TexFormula1" title="\sqrt{x} +3" alt="\sqrt{x} +3" align=

olga2289 [7]

Answer:

Option 2 is the answer.

Step-by-step explanation:

To find the equation for $f^{-1}(x)$ we will fist write the function in the form of equation.

y = √x +3

√x = y - 3

x = (y - 3)² = y² - 6y + 9

Now we will replace y as x to write inverse of function f(x).

We will rewrite the equation in the form of function.

$f^{-1}(x)$ = x² - 6x + 9 ≅ (x - 3)²

So the answer is $f^{-1}(x)$ = (x - 3)²

5 0

3 years ago

Read 2 more answers

A balloon with a small leak loses 0.5% of its volume each day. If it originally contained 40 liters of gas, what is the volume o

Zigmanuir [339]

The answer is c i done it

3 0

3 years ago

7x+16=8x+15 solve for x and y

elena55 [62]

Answer:

x = 1

Step-by-step explanation:

7x + 16 = 8x + 15

Step 1 : Subtract 15 on both sides

7x + 16 - 15 = 8x

7x + 1 = 8x

Step 2 : Subtract 7x on both sides

1 = 8x - 7x

1 = 1x

x = 1

8 0

2 years ago

Two factory plants are making TV panels. Yesterday, Plant A produced 4000 fewer panels than Plant B did. Two percent of the pane

nika2105 [10]

Answer:

Plant B produced 17000 panels.

Step-by-step explanation:

Two factory plants are making TV panels.

Yesterday, Plant A produced 3000 fewer panels than Plant B did.

Five percent of the panels from Plant A and 4% of the panels from Plant B were defective.

How many panels did Plant B produce, if the two plants together produced 1380 defective panels?

~~~~~~~~~~~~~~~~~~~

A = B - 3000 (1) ("Plant A produced 3000 fewer panels than Plant B did")

0.05A + 0.04*B = 1380. (2) (counting defective panels)

Substitute expression (1) into eq(2). You will get

0.05*(B-3000) + 0.04*B = 1380,

0.05*B - 150 + 0.04*B = 1380,

0.09*B = 1380 + 150 = 1530 ====> B = 1530%2F0.09 = 17000.

5 0

3 years ago