3 years ago

15x-6x+5xsquared -6x cubed - 2x squared +2(6x-2) please help me!!! (Show work)

1 answer:

6 0

$15x-6x+5x^2-6x^3-2x^2+2(6x-2)\\\\=15x-6x+5x^2-6x^3-2x^2+12x-4\\\\=(-6x^3)+(5x^2-2x^2)+(15x-6x+12x)+(-4)\\\\=-6x^3+3x^2+21x-4$

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Rama09 [41]

Answer:

$\frac{9}{20}$ = 0.45

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Step-by-step explanation:

You can solve these easily with a calculator.

$\frac{9}{20}$ = 0.45

$\frac{6}{11}$ = 0.54 repeating

8 0

3 years ago

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Black_prince [1.1K]

Answer:

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Step-by-step explanation:

First off, B is zero, so there is no phase shift, meaning that the vertex stays on the y-axis. Next, A is negative, so the parabola opens down, and whenever you have a parabola opening down, it does so at maximum. Finally, C represents our y-intercept, or in this case, our vertical shift. Our y-intercept is (0, −1), and so as our vertex, hence our answer.

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3 years ago

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vodomira [7]

Answer: It will take the boat 0.11 hour to cross the river

From the original starting point, the boat end up 1.85 miles away from that point.

Step-by-step explanation: Please find the attached file for the solution