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Aleks [24]
2 years ago
7

A) Write (3x + 1)(x + 4)(2x + 7) in the form ax3 + bx2 + cx + d

Mathematics
1 answer:
Mandarinka [93]2 years ago
6 0

Step-by-step explanation:

6x^3 + 47x^2 + 99x + 28

hope it helps you

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If y = xy + x2 + 1, then when x=-1,<br> dy/dx
Lina20 [59]
Given y = xy + x^2 +1, first find y = f(x) = (x^2 + 1) / (1 - x). Then use the quotient rule for derivatives.

dy/dx = [( 1 - x)( 2x) - (x^2 + 1)(-1)] / (1 - x)^2. Substitute the value of x = -1 into the above derivative and get -1/2.
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Sean has $75 to spend on CDs. If each CD costs $6.98, about how many CDs can he buy?
Daniel [21]
75/6.98=10.744
We would most likely round this down to 10 even though the .7 because if we round up we would go over the budget.
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Did it come with a pic
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2 years ago
what is the slope of the line through (1,0)(1,0)left parenthesis, 1, comma, 0, right parenthesis and (3,8)(3,8)
77julia77 [94]

The slope of the line passing through (1 , 0) and (3 , 8) is 4.

Slope, commonly represented by the letter m, is a value that describes the steepness and direction of a line. The slope of a line is also called its gradient or rate of change.

It is the vertical change in y divided by the horizontal change in x, sometimes called rise over run. The slope formula uses two points, (x_{1}, y_{1} ) and (x_{2}, y_{2} ), to calculate the change in y over the change in x.

m=\frac{y_{2}-y_{1}  }{x_{2}-x_{1} }     where

x_{1} = 1

y_{1} = 0

x_{2} = 3

y_{2} = 8

Substituting the values,

m=\frac{y_{2}-y_{1}  }{x_{2}-x_{1} } =\frac{8-0}{3-1} =\frac{8}{2}=4

Hence, he slope of the line passing through (1 , 0) and (3 , 8) is 4.

For more example on slope of line, visit brainly.com/question/3493733.

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7 0
1 year ago
Mark did 2/5 of a job and Alan did 1/3 of the remainder. The fraction of the job left undone
Evgesh-ka [11]
2/5=4/10=12/30 1/3=10/30 12/30+10/30=22/30 22/30=11/15
4 0
2 years ago
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