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3 years ago

If f(x) = 2x and g(x)=1/X what is the domain of (fºg)(x)?

Mathematics

1 answer:

Firlakuza [10]3 years ago

6 0

Answer:

(f*g) (x) simply means we obtain the product of f(x) and g(x). We are given that;

f(x)=2x

g(x)= 1/x

(f*g) (x) = f(x) * g(x)

(f*g) (x) = 2x * 1/x = 2

This is a horizontal line defined everywhere on the real line. The domain of (f*g) (x) is thus ( -∞, ∞)

Step-by-step explanation:

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The elevation E, in meters, above sea level at which the boiling point of a certain liquid is t degrees Celsius is given by the

Anna007 [38]

Answer:

$E(119.5)= 730m$

Step-by-step explanation:

Given

$E(t)= 1200(120-t)+520(120-t)^2$

Required

Determine E(119.5)

$E(t)= 1200(120-t)+520(120-t)^2$

Simply substitute 119.5 for t

$E(119.5)= 1200(120-119.5)+520(120-119.5)^2$

Evaluate the expressions in bracket

$E(119.5)= 1200(0.5)+520(0.5)^2$

Solve 0.5²

$E(119.5)= 1200 * 0.5+520*0.25$

$E(119.5)= 600+130$

$E(119.5)= 730$

Hence;

$E(119.5)= 730m$

5 0

3 years ago

Each side of a square is x meters long. Each side of the square is increased by 10%.

postnew [5]

Increase by 10% is time 1.10

so

area=side^2
sidenew=1.1x
so

(1.1x)^2=44 is equation

6 0

3 years ago

Read 2 more answers

Mr. Wilson is giving his students a vocabulary test tomorrow over all the terms they have learned from this semester. Today, he

Eddi Din [679]

1) The population

Is the set of all the terms that the teacher taught this semester and which he wrote down on the note cards and put in the paper bag.

2) The sample is every set of five cards that is selected by each student.

3) I think the sample is representative because all ther terms have the same probability of being selected.

Further, given that the cards are replaced every time all the students will face the same population when they are going to select a sample.
Comments Report

8 0

3 years ago

Monique hod 30. She purchased 2 necklaces for *8 each. How much money does Monique have remaining?

Setler79 [48]

Answer:

$14

Step-by-step explanation:

The necklaces cost $8, so two would be $8+$8=$16

Now do the original $30 minus the $16 dollars spent

You now have $14 left.

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2 years ago

2.5(25) +75 Haha I don’t really understand this!

Evgen [1.6K]

Answer:

137.5

Step-by-step explanation:

5 0

3 years ago