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Citrus2011 [14]
2 years ago
6

Expand. Your answer should be a polynomial in standard form. (x + 5)(x +3)

Mathematics
1 answer:
vitfil [10]2 years ago
3 0

Answer: x^2+8x+15

Step-by-step explanation:

(x+5)(x+3)

x^2+3x+5x+15

x^2+8x+15

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Answer:

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Step-by-step explanation:

<u>Linear Modeling</u>

It consist is setting up a linear relationship between two variables, given some experimental data. Only 2 points are needed to set up the equation of a line, but if more than 2 points are used, then the result should use statistical approaches like linear regression to find the best-fit line.

For the question at hand, Marty practices his piano lessons 11 minutes the week #1. It provides the first point (1,11). He practices 25 minutes per day on the third week. It gives us another point (3,25). This is enough to find the equation of a line. The general formula for a line, having two points (m1,w1) (m2,w2) is

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Let's plug in our values

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Simplifying:

m-11=7w-7

\boxed{m=7w+4}

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3 years ago
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Answer:

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Step-by-step explanation:

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