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3 years ago

Estimate a 15% tip on a dinner bill of $78.17 by first rounding the bill amount to the nearest ten dollars.

Mathematics

1 answer:

ella [17]3 years ago

8 0

$78.17 rounds to $78
15% of $78 = $11.70 which rounds to $12

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3 years ago

Solve for x Ax + B = C

Ahat [919]

Answer:

(C - B)/A = x

Step-by-step explanation:

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3 years ago

A gardener is planting two types of trees:

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It will take 4 years for these trees to be the same height

Step-by-step explanation:

A gardener is planting two types of trees:

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Type B is 2 feet tall and grows at a rate of 24 inches per year

We need to find exactly how many years it will take for these trees to be the same height

Assume that it will take x years for these trees to be the same height

Type A:

∵ The initial height of the tree is 6 feet

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∴ 6 feet = 6 × 12 = 72 inches

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∵ The number of years is x

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Type B:

∵ The initial height of the tree is 2 feet

∴ 2 feet = 2 × 12 = 24 inches

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∵ It grows at a rate of 24 inches per year

∵ The number of years is x

∴ The height of the tree in x years = 24 + 24 x

Equate The heights of the two types

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Learn more:

You can learn more about the word problems in brainly.com/question/10557938

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3 years ago

The odds of winning a game of horse in basketball is 3 to 5 against your opponent. what is the probability that you win the game

Marat540 [252]

To find your probability of winning, you will convert the fraction 3/5 to a percent.

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7 0

3 years ago

How do you calculate the percentage of a number? ex. 70% of 70

Levart [38]

Answer:

Find P percent of X

Find what percent of X is Y

Find X if P percent of it is Y

Step-by-step explanation:

Example: What is 10% of 150?

Convert the problem to an equation using the percentage formula: P% * X = Y

P is 10%, X is 150, so the equation is 10% * 150 = Y

Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10

Substitute 0.10 for 10% in the equation: 10% * 150 = Y becomes 0.10 * 150 = Y

Do the math: 0.10 * 150 = 15

Y = 15

So 10% of 150 is 15

Double check your answer with the original question: What is 10% of 150? Multiply 0.10 * 150 = 15

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3 years ago