Find ƒ–1 for the function ƒ(x) = –2x + 1

Mathematics

1 answer:

Digiron [165]3 years ago

5 0

Answer:

Step-by-step explanation:

-2 (-1) + 1

multiply :-2 * -1 = 2

add: 2 + 1 = 3

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Please help me solve this question.

zlopas [31]

Cut the sign in half across its middle. Then you have two right triangles.
They're congruent, so pick one to work with, and discard the other one
temporarily.

In the right triangle:

-- The length of one leg is 'x'.<em />
-- The length of the other leg is (2x + 7).
-- The length of the hypotenuse is 35.47 inches.

You know that in any right triangle:

(The square of the hypotenuse) =
(the square of one leg) + (the square of the other one.)

so you can use that to find the value of 'x'.

One you know the value of 'x', go back to the whole sign before you cut it
in half, and notice that the height of the sign is '2x' ... which is the answer.

6 0

3 years ago

Read 2 more answers

Johnny has $12 less than Joe. If Joe spends half of his money, and Johnny spends none, then Johnny will have two dollars more th

Savatey [412]

Answer:$24

Step-by-step explanation: because 12+12=24

8 0

3 years ago

The cost for a company to manufacture x bracelets can be represented by the function C(x). Complete the sentence below using the

gizmo_the_mogwai [7]

The cost for a company to manufacture "x"....
These statements tell you what X is. (The word cost refers to what the function will tell us. In other words C(x) = The Cost for the Company))

So as we keep going the problem goes onto:
.... bracelets
So the number of bracelets is X.

The function is: C(x)

And how functions work are quite simple. You plug in a number (x) and get out a number (y).

So, C(256) = 1536

So, they made 256 bracelets at a cost of 1536 dollars.

This is no different than if I said the function was:
C(x) = 6x
And then asked, what would the function equal when x = 256. It's the same thing, so don't let it trip you up!

Answer 1: 1536$
Answer 2: 256

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4 years ago

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liq [111]

Answer:

a) 20.33% probability that the participant is less than 64.5 inches.

b) 33.72% probability that the participant is more than 68.25 inches

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 67, \sigma = 3$