3 years ago

I need some help with Algebra 2???

Mathematics

1 answer:

Angelina_Jolie [31]3 years ago

3 0

Answer:

7. x = 10 or -8

8. x $\sqrt{5}$ - 25 $\sqrt{x}$

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F(x)= 2x+3/x-1, x ≠ 1, dan f^-1 adalah invers dari f

Sindrei [870]

Answer:

The answer are

${f}^{ - 1} (x) = \frac{x + 3}{x - 2}$

${f}^{ - 1} ( - 3) = 0$

Step-by-step explanation:

To find the infers we do that

$f(x) = \frac{2 x + 3}{x - 1 } \\ (x - 1)f(x) = 2x + 3 \\ xf(x) - f(x) = 2x + 3 \\ xf(x) - 2x = f(x) + 3 \\ x(f(x) - 2) = f(x) + 3 \\ x = \frac{f(x) + 3}{f(x) - 2} \\ then \: \\ {f}^{ - 1} (x) = \frac{x + 3}{x - 2} \\ then \\ {f }^{ - 1} ( - 3) = \frac{ - 3 + 3}{ - 3 + 2} = 0$

5 0

3 years ago

What polynomial has a graph that passes through the given points? (-2, 2) (-1, -1) (1, 5) (3, 67) A. y = -x3 + 4x2 + 2x - 2 B. y

LekaFEV [45]

An easy this to do is use desmos... an online graphing site that will allow you to graph the curves and points...

https://www.desmos.com/calculator

The alternate method is to subsitute each point into each equations...

I just did (-2, 2) into A... that point is not on the curve.. that would be the hard way. Subsituting x = -2 y = 18 so (-2, 2) isn't on the curve.

so eliminate A

repeat the process with B etc is (-2, 2) in on the curve, then select the next point and check.

That's why graphing is easier

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3 years ago

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A contractor's crew can frame 3 houses in a week. How long will it take them to frame 54 houses if hey frame the same number eac

mr Goodwill [35]

Divide 54 by 3.
18:)
have a good day!

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3 years ago

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Whats 7, −6, 4, −10, 3 least to greatest

exis [7]

Answer: