2 years ago

What is the standard form of the quadratic equation 2x + (x-4)(x + 1) = 9?

Mathematics

1 answer:

GREYUIT [131]2 years ago

7 0

Answer:

Step-by-step explanation:

2x+(x-4)(x+1)=9

2x+x²+x-4x-4=9

x²-x-9-4=0

x²-x-13=0

You might be interested in

What is 38.990 rounded to the nearest integer

Elanso [62]

39.000 if you look at the tens place (.9) it’s over 5 so you round up

7 0

3 years ago

The product of 2, and a number increased by 7, is -36

vodka [1.7K]

Here is the equation you should use.

2(x+7) = -36

4 0

3 years ago

A circle of radius of 4 inches has an arc length of 5.8 inches. Find the measure of the central angle.

kondor19780726 [428]

<h3>SOLUTION : </h3>

The radius of the circle is 4 inch and has an arc length of 5.8 inches . We know that if the central angle is 360° then the arc length is $2\pi r$ . Similarly when angle is theta ,

$\implies Arc = radius \times \theta$

Now substitute respective values , from the given data ,

$\implies 5.8 inch = 4inch * \theta \\\\\implies 0.14 m = 0.1 * \theta \\\\\implies \boxed{\red{\theta \approx 1.4 \ rad }}$

This is our required answer!

4 0

3 years ago

For any nonzero value of a, and for any integers m and n,

Aleks04 [339]

Umm I honestly don’t know

4 0

3 years ago

5x-3y-2(4x-y) Can someone help

Lisa [10]

Answer:

-3x-1y

Step-by-step explanation:

5x - 3y⇒ -2(4x-y)

⇒-2(4x - y) = -8x +2y

5x - 3y -8x + 2y

<u>Combine like terms:</u>

5x- 8x= -3x

-3y +2y = -1x

<u>-3x - 1y</u>

8 0

3 years ago