MATHEMATICS HIGH SCHOOL

Find the inverse function of g(x) = 2x + 4.g -1(x) = 4x + 2
g -1(x) = 2x + 1/2
g -1(x) = 1/2 x - 2
g -1(x) = 2x - 4

Answers

Answer 1
Answer:

Answer:

g^(-1)(x)=(1)/(2)x-2

Step-by-step explanation:

First, let's rename this as y = 2x + 4.

In order to find the inverse, switch the x and the y, then solve for the new y.

x = 2y + 4 so

2y = x - 4 and

y=(1)/(2)x-2

Putting it back into function notation:

g^(-1)(x)=(1)/(2)x-2

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Today each cookie costs $0.75 less than the normal price. Right now if you buy 7 of them it will only cost you $2.80. Find the normal price of each cookie.

Answers

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Answer:

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How many significant figures does 0.0560

Answers

Answer:

the significant figures of the number 0.0560 is 3.

Step-by-step explanation:

Significant figure is the number of non-zero digits.

The given number is 0.0560

Now, we know that leading zeros are not significant.

Hence, we count the number of digits after the decimal excluding 0.

So there are 3 digits 5,6 and 0.

Hence, we can conclude that the significant figures of the number 0.0560 is 3.
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Jina reads 30 chapters of a book in 6 hours. What is her rate in chapters per hour?

Answers

Answer:

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Step-by-step explanation:

The distances (y), in miles, of two cars from their starting points at certain times (x), in hours, are shown by the equations below:Car A
y = 60x + 10

Car B
y = 40x + 70

After how many hours will the two cars be at the same distance from their starting point and what will that distance be?

2 hours, 150 miles
2 hours, 190 miles
3 hours, 150 miles
3 hours, 190 miles

Answers

when the cars are at the same distance from the starting point the y will be the same for both of the equations.
which means that 60x + 10 = 40x + 70

⇒ 60x-40x=70-10 
⇒ 20x=60
⇒ x=3 hours

now that we know the x we can choose an equation and solve it

60x3+10=y⇒
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the correct answer is the last one: 3 hours, 190 miles
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