2 years ago

If f (x) = 2 x + 5 and three-halves are inverse functions of each other and f(x)=2x+5, what is f-1(8)?

Mathematics

1 answer:

nalin [4]2 years ago

6 0

Answer:

Found the answer, its B. 3/2!

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Students are asked to memorize a list of 100 words. The students are given periodic quizzes to see how many words they have memo

nadezda [96]

Answer:

C. dL/dt = k(100 - L)

Step-by-step explanation:

We have a list containing 100 words.

L = number of words memorized at time t.

At any time t, the number of words left to be memorized is 100-L.

Therefore:

$\frac{dL}{dt}\propto 100-L\\ $Introducing k, a constant of proportion$\\\frac{dL}{dt}= k(100-L)$

<u>The correct option is C.</u>

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2 years ago

Am adult ticket at an amusement park cost $24.95 and a child’s ticket costs $15.95. A group of 10 people paid $186.50 to enter t

kifflom [539]

The correct answer is 4 adults

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2 years ago

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The pizza shop offers a 15 percent discount for veterans and senior citizens. If the price of a pizza is $12, how would you find

Naya [18.7K]

All you would do is times 12 by .15 or 15% you get 1.8 then all you do is 12 minus 1.8 you get $10.20 that is the price of a discounted pizza

I hope this helps

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2 years ago

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The weight, w, of a spring in pounds is given by 0.9 times the square root of the energy, E, stored by the spring in joules. If

frutty [35]

For this case we have the following equation:
$w = 0.9* \sqrt{E}$
Where,
w: The weight of a spring in pounds
E: the energy stored by the spring in joules.
Substituting values we have:
$w = 0.9* \sqrt{12}$
Making the corresponding calculation:
$w=3.12$
Answer:
the approximate weight of the spring in pounds is:
$w=3.12$

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A research group interested in understanding the effect of listening to classical music on learning mathematics conducted a stud

GalinKa [24]

First of all, this is not an observational study, but an experiment, since we have two groups and one of the two groups is manipulated or treated. In an observational study the subjects are only observed.

Second, the students did not choose their groups - so we can't choose the last answer.

Therefore the correct answer is:
This is an experiment because a treatment was applied to a group.

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2 years ago