3 years ago

Complete the square 3x^2+12x=15

1 answer:

3 0

Step-by-step explanation:

$3 {x}^{2} + 12x = 15 \\ 3 ({x}^{2} + 4x) = 15 \\ {x}^{2} + 4x = 5 \\ {x}^{2} + 4x = 5 \\ {x}^{2} + 4x + 4 = 5 + 4 \\ {x}^{2} + 4x + 4 = 9 \\ {x}^{2} + 4x + {2}^{2} = {3}^{2} \\ \red{ \bold{ (x + 2)^{2} = {3}^{2}}} \\$

You might be interested in

What is the contrapositive of the conditional statement? If two variables are directly proportional, then their graph is a linea

Triss [41]

Answer:

D. "If the graph of two variables is not a linear function, then the two variables are not directly proportional"

Step-by-step explanation:

The contrapositive of a statement is basically you changing the conditional part of the statement with its result and then finding the negative of both. This is called Contraposition.

So, for the statement given:

"If two variables are directly proportional, then their graph is a linear function."

The contrapositive will be:

"If the graph of two variables is not a linear function, then the two variables are not directly proportional"

7 0

3 years ago

Complete function tables part 2 please help i will mark as brainlyst

Vlad1618 [11]

1 = 1/2(0) + 1

2 = 1/2(2) + 1

3 = 1/2(4) + 1

4 = 1/2(6) + 1

hope this helps!

6 0

3 years ago

100 PTS!!!! A square office has sides that are 8 feet long. What is the office's area?

nalin [4]

Answer:

Step-by-step explanation:

A square has equal side measurements meaning that each side is 8. To find the area, multiply the length by the width which would be 8 * 8 = 64.

5 0

2 years ago

Read 2 more answers

3. Matt is dinning at a restaurant that does not charge a sales tax. He would like to leave a 15% tip. Select all of the followi

abruzzese [7]

Hi there I’m here for points I’m sorry I couldn’t help:/

8 0

2 years ago

What is the equation through the points: (-3, 10), (0, 4) ASAP please

nexus9112 [7]

Answer:

y= -2x+4

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers