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1 year ago

50 more points sdadadada

Mathematics

1 answer:

creativ13 [48]1 year ago

7 0

Switch the variable x and y with each other. Then the correct option is B.

<h3>What is inverse of a function?</h3>

Let the function will be

f: X → Y

Then the inverse function will be

f⁻¹: Y → X

The function is given below.

f(x) = 3x – 10

Then the inverse function of the f(x) will be

Put y in place of f(x).

x = 3y – 10

3y = x + 10

y = (x + 10) / 3

Switch the variable x and y with each other.

Then the correct option is B.

Learn more about inverse function here:

brainly.com/question/19425567

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A tree in John's backyard has been growing for 4 1/2 years. The tree is 4/5 meters tall. What is the unit rate in meters per yea

STatiana [176]

Answer:

<u>5 127/200 meters</u>

Step-by-step explanation:

4 1/2 = 4 5/10 | 4/5 = 8/10

--------------------------------------

4 5/10 = 4.5 | 8/10 = 0.8

--------------------------------------

4.8 divided by 0.8 = 5.625

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5.635 = 5 635/1000

635/1000 divided by 5 = 127/200

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5 + 127/200 = <u>5 127/200</u>

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

bryan has some 3 cent stamps and some 4 cent stamps. what is the least number of stamps he can combine so the value of the stamp

SashulF [63]

Answer:

The least number of stamps required is $9$

Step-by-step explanation:

Let the number of $3$ cent stamps be $x$ and $4$ cent stamps be $y$

We have

$3x+4y=33$

The minimum number is obtained when more $4$ cent stamps are used

Here $y$ cannot be greater than $8$ since $\frac{33}{4}$

Substitute $y=8$

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Not possible since $x$ is not a fraction

Substitute $y=7$

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Not possible since $x$ is not a fraction

Substitute $y=6$

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Possible

Hence minimum number of stamps is

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2 years ago

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yuradex [85]

Answer:

Step-by-step explanation:

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Therefore, the miles per gallon for the blue car is

31.5/1.25 = 25.2 miles per gallon.

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Converting 28 4/5 miles to decimal, it becomes 28.8 miles. Converting 4/5 gallons of gasoline to decimal, it becomes 0.8 gallons of gasoline.

Therefore, the miles per gallon for the red car is

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