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3 years ago

Which of the following are solutions to the equation below (5x+1)^2=7? Check all that apply.

Mathematics

2 answers:

Dahasolnce [82]3 years ago

8 0

Answer:C E (apex) !!

Step-by-step explanation:

stiv31 [10]3 years ago

4 0

(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0

Solve this quadratic for x:

x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5 (answer E)

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What is the slope of a line parallel to the line y=5/2x-14?

ycow [4]

Answer:

5/2

Step-by-step explanation:

When you are finding the slope of a parallel line, the other line always has the same slope as the first line but different y intercept.

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3 years ago

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Mashutka [201]

Answer:

$9 + \frac{n}{3} - 6 = 7$

Step-by-step explanation:

Given

$9 + \frac{n}{3} - 6$

Required

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$9 + \frac{n}{3} - 6 = 9 + \frac{12}{3} - 6$

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3 years ago

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Answer:

A. (1 2/3, 4 2/3)

Step-by-step explanation:

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3 years ago

Two identical masses are moving down a slope one masses traveling twice as fast as the other mass how does the kinetic energy of

GaryK [48]

Answer:

One mass's kinetic energy is 4 times the other.

Step-by-step explanation:

The formula for kinetic energy is $KE=\frac{1}{2}mv^2$

Where

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3 years ago