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2 years ago

15

Help plssssssssss i need some help

2 answers:

SOVA2 [1]2 years ago

8 0

Answer:

it is a+2b, the one you have selected.

Step-by-step explanation:

Mamont248 [21]2 years ago

4 0

I believe the answer is a+2b

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Given f(x) = 7x – √2 and g(x) = x + √2, find (f – g)(x).

enot [183]

(f – g)(x) = 7x - √2 - (x + √2)
(f – g)(x) = 7x - √2 - x - √2
<span>(f – g)(x) = 6x - 2</span>√2

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If p(x) = 6x³ + 5x² + 7x - 5, find the coefficient of x³

denpristay [2]

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2 years ago

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Answer step by step

enot [183]

Consider, please, this solution/explanation:
1. suppose, that number of cars is 'x', numbers of buses is 'y'.
2. according to the condition 'a total of 32', it means that x+y=32. This is the 1st equation.
3. according to the condition in one car are 3x persons, in one bus are 27y persons, and totaly 3x+27y=408 people. This is the 2d equation.
4. if to solve the system of two equations:
$\left \{ {{x+y=32} \atop {3x+27y=408}} \right. \ =\ \textgreater \ \ \left \{ {{x=19 (cars)} \atop {y=13(buses)}} \right.$

Answer: 13 - b., 19 - c.

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2 years ago