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3 years ago

Solve by completing the square. 4x^2 + 4x- 2 = 0

Mathematics

2 answers:

topjm [15]3 years ago

8 0

Answer:

the square root of 3 plus 1 over 2, the square root of 3 minus 1 over 2

Step-by-step explanation:

those are your 2 answers

Snowcat [4.5K]3 years ago

6 0

Answer:

x = .1 (or as 2/20, 1/10)

Step-by-step explanation:

okay lets start with simplifying 4x^2, 4x * 4x = 16x right?

so lets plug that in with the equation. 16x + 4x - 2 = 0

simplify by adding the 4x with the 16x, 20x - 2 = 0

now add 2 to both sides, 20x = 2

now divide both sides by 20, x = .1 (or as 2/20, 1/10)

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4 years ago

1. According to a recent survey, 13 out of the 33 students in a class take the bus to school. What is the ratio of students who

AlexFokin [52]

Answer: (1) 13/20 (2) 8 (3) Yes. They are proportional

<u>Step-by-step explanation:</u>

(1) 13 students take the bus.

33 - 13 = 20 students do not take the bus

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(2)

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(3)

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4 0

3 years ago

6-129. Nick represented the equation 3(2x+4)=-6 on the Equation Mat below. Choose a strategy to solve for x. You may continue to

poizon [28]

Answer:

x = -3

Step-by-step explanation:

You have the following equation:

$3(2x+4)=-6\\$

you first you distribution property in order to eliminate the parenthesis:

$3*2x+3*4=-6\\\\6x+12=-6$

next, you subtract 12 in both sides of the equation:

$6x+12-12=-6-12\\\\6x=-18$

Finally, you divide the equation by 6 and simplify:

$\frac{6x}{6}=-\frac{18}{6}\\\\x=-3$

hence, the solution to the equation is x = -3

3 0

3 years ago