Ask question

Ask question

All categories

3 years ago

9

Select the correct answer.

1 answer:

Butoxors [25]3 years ago

5 0

Answer:

Hello there the Correct answer The only answer choice that produces -2x²+2 is D.

Because (-x²+2x+3)+(-x²-2x-1) = -x²+2x+3-x²-2x-1 = -2x²+2

answer: D

Hope It Helps!

You might be interested in

A helicopter descends at a rate of 450 feet per minute write the equation and sole the change in altitude of the helicopter afte

sweet [91]

Just divide the 450 by 5

8 0

3 years ago

Directions: Complete each proof using the properties of equality. Not all rows be used.

kicyunya [14]

The answers for 13 and 14 are attached in the file.

7 0

3 years ago

Following data, what would be the value of x?

kirill115 [55]

Answer:

The answer is C. 10

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti

Marat540 [252]

Answer:

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

Step-by-step explanation:

Given

$x^2 - 5x - 7 = 0$

Required

Solve for x using:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

First, we need to identify a, b and c

The general form of a quadratic equation is:

$ax^2 + bx + c = 0$

So, by comparison with $x^2 - 5x - 7 = 0$

$a = 1$ $b = -5$ $c = -7$

Substitute these values of a, b and c in

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}$

$x = \frac{5 \± \sqrt{25 +28}}{2}$

$x = \frac{5 \± \sqrt{53}}{2}$

Split the expression to two

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

To solve further in decimal form, we have

$x = \frac{5 + 7.28}{2}$ or $x = \frac{5 - 7.28}{2}$

$x = \frac{12.28}{2}$ or $x = \frac{-2.28}{2}$

$x = 6.14$ or $x = -1.14$

4 0

3 years ago

The map at the right has an Euler Path in which you can pass through each doorway exactly once. Which 2 rooms must be a starting

bogdanovich [222]

Answer:I think the answer is d

Step-by-step explanation:

5 0

3 years ago