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Elden [556K]
3 years ago
6

Use the factoring to find the solution to the following equation

Mathematics
1 answer:
NikAS [45]3 years ago
6 0

Hello from MrBillDoesMath!

Answer:  Choice C, -(3 +2/3)

Discussion:

Start with

13x^2 + 56x + 75 =  4x^2 -10x - 46

Subtract 4x^2 from both sides:

(13x^2 - 4x^2) + 56x + 75 = -10x - 46

Add 10x to both sides

(13x^2 - 4x^2) + (56x + 10x) + 75 =  (-10x + 10x) - 46 or

9x^2 + 66x + 75 = -46.

Add 46 to each side

9x^2 +66x + (75 + 46) = 0 =>

9x^2 + 66x + 121 = 0.

This factors as follows:

9x^2 + 66x + 121 =  (3x + 11)^2 = 0 =>

3x + 11 = 0 =>

x = -11/3  = - (3 + (2/3))     which is choice C


Thank you,

MrB


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4 years ago
A line is represented by the equation y = x + 2. Suppose the slope of the line was doubled and the value of the y-intercept was
Hitman42 [59]

Answer:

A.y=2x+1

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8 0
3 years ago
9.2 million was calculated as a percentage of 132 million. likewise 13.4 million was determined as a percentage of 142 million.
lora16 [44]
I assume you need the difference between the percentages,

if
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the difference is
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4 0
4 years ago
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marissa [1.9K]

Answer:

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7 0
4 years ago
Read 2 more answers
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