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anzhelika [568]
4 years ago
5

F(x) = 2x2 - X - 15 find f(-6).

Mathematics
1 answer:
xz_007 [3.2K]4 years ago
7 0

Answer:

the answer is

*x+57

Step-by-step explanation:

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Suppose a function f has an inverse. If f(2)=6 and f(3)=7, find: f^-1 (f(3))
klemol [59]

9514 1404 393

Answer:

  3

Step-by-step explanation:

The definition of an inverse function is ...

  f^-1(f(x)) = x

Then ...

  f^-1(f(3)) = 3

3 0
3 years ago
Jake built a skateboard ramp, if the distance of the ramp is 10 ft. The ramp rises a
ikadub [295]

Answer:

Angle made by ramp with ground is ≈19.29^{\circ}

Step-by-step explanation:

Diagram of given scenario is shown below.

Given that,

Horizontal Distance of Skateboard ramp is 10 ft.

Height of Skateboard ramp is 3.5 ft.

From figure,

It is forming a Right angle triangle \triangle ABC.

In \triangle ABC, AB=3.5 and BC=10.

Clearly see that we need to find measure of angle \angle C.

Using Trigonometric ratio:

     Tan(\theta)= \frac{Perpendicular}{Base}

So,  Tan(\angle C) = \frac{AB}{BC} =\frac{3.5}{10} =0.35

Then \angle C=Tan^{-1} (3.5)=19.290046^{\circ}

Therefore, Angle made by ramp with ground is ≈19.29^{\circ}

8 0
3 years ago
F it rained on 3 days out of 20 days, on what percent of the days did it rain?
Dahasolnce [82]
Percent means per 100/ out of 100.

3/20= x/100

20*5=100
3*5=15

15=x

Final answer: 15%
6 0
3 years ago
Read 2 more answers
A conglomerate of Christmas tree growers in Oregon wants to know if there is a difference in preference for live Christmas trees
devlian [24]

Answer:

0 is part of the confidence interval, which means that there is not convincing evidence that the two population proportions are different.

Step-by-step explanation:

Based on a confidence interval for the difference of proportions, there will be significant evidence that the proportions are different if 0 is not part of the confidence interval for the difference of proportions.

In this question:

Confidence interval between -0.036 and 0.154

0 is part of the confidence interval, which means that there is not convincing evidence that the two population proportions are different.

7 0
3 years ago
I need help on this question please help -1=7+8x
DanielleElmas [232]

Answer:

x=-1

Step-by-step explanation:

  1. subtract 8x and move it to the other side
  2. add one to the 7 you get 8
  3. divide the -8 by the 8 you got from adding 1 and 7
  4. your answer will be -1
5 0
4 years ago
Read 2 more answers
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