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3 years ago

WILL GIVE POINTS

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

3 0

Answer:

2x, (x-2), (x+6)

Step-by-step explanation:

I just took the quiz on plato and I got it correct

P.S Can you guys give me the brainliest please

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3 years ago

What is the equation of the line that passes through the point (8, -4) and<br> has a slope of 1/2

Eva8 [605]

Answer:

$y = \frac{1}{2}x - 8$

Step-by-step explanation:

1. Approach,

For this problem, the format of a line that will be used is, slope-intercept form;

$y = mx + b$

Where ( $m$ ) is the slope of the line, also known as the change in the line and $(b)$ is the y-intercept, or where the graph of the line intersects the y-axis. Since, in this problem, the slope of the line is given, all one has to do is substitute in a point on the given line and solve.

2. Finding the equation,

In this problem, the slope of the line is given. Therefore, to solve this problem, all one has to do is substitute in a point on the given line and solve.

$y = mx + b$

Substitute in the slope,

$y = \frac{1}{2}x + b$

Substitute in the point,

$-4 = \frac{1}{2}(8) + b$

Simplify,

$-4 = 4 + b$

Inverse operations,

$-4 = 4 + b\\-4\\\\-8 = b$

3. Putting it all together,

Now, that one has y-intercept, ( $-8$ ); use the given slope and the formula $y = mx + b$ , substitute in all the information.

$y = \frac{1}{2}x - 8$

7 0

3 years ago

what was the interest rate if your balance on an investment of 857 dollars at the end of six years is 1268.36 dollars

Mumz [18]

<h3>The interest rate is 8 % if your balance on an investment of 857 dollars at the end of six years is 1268.36 dollars</h3>

<em><u>Solution:</u></em>

Given that,

Principal = $ 857

Amount = $ 1268.36

Number of years = 6

Rate of interest = ?

Simple Interest = Amount - principal

Simple Interest = 1268.36 - 857

Simple Interest = 411.36

<em><u>Use the formula,</u></em>

$Simple Interest = \frac{ p \times n \times r}{100}\\\\411.36 = \frac{ 857 \times 6 \times r}{100}\\\\41136 = 5142 \times r\\\\r = \frac{41136}{5142}\\\\r = 8 \%$

Thus the interest rate is 8 %

3 0

3 years ago

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