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4 years ago

BRAINLIEST! :3 How much is a $15 tip with the meal costing $18?

Mathematics

1 answer:

VARVARA [1.3K]4 years ago

4 0

With the meal costing $18 and the tip being $15 the total will be $33

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3 years ago

The volume of a cylinder is 30 pie cubic units. A cone shares the same base. The height of the cone is twice the height of the c

bija089 [108]

Given:

The volume of a cylinder is $30 \pi$ cubic units.

A cone shares the same base.

The height of the cone is twice the height of the cylinder.

We need to determine the volume of the cone.

Height of the Cone:

Let h denote the height of the cylinder.

Let H denote the height of the cone.

Since, it is given that, the height of the cone is twice the height of the cylinder, we have;

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Volume of the cylinder:

The formula to determine the volume of the cylinder is

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$30 \pi = \pi r^2 h$ -------(1)

Volume of the cone:

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$V=\frac{1}{3} \pi r^2 H$

Substituting $H=2h$ , we get;

$V=\frac{1}{3} \pi r^2 (2h)$

$V=\frac{2}{3} \pi r^2 h$

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3 years ago

Two consecutive even whole numbers are selected. The difference between the reciprocals of the two numbers is 1/40. determine th

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Answer:

2 numbers could be 10 and 12

or - 12 and - 10

Step-by-step explanation:

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we have to mulitply the 2 denominators x and (x+2) to get a common denominator for the 2 fractions

we can then remove the brackets from the numerator and denominator

and then cross multiply

60 * 2 = x² + 2x

120 = x² + 2x

x² + 2x - 120 = 0

we have a quadratic equation which needs to be solved

x² + 12x - 10x - 120 = 0

x (x + 12) - 10(x + 12) = 0

(x - 10) (x + 12) = 0

x - 10 = 0 or x + 12 = 0

x = 10 x = -12

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3 years ago

If a soccer team won 7 of its 13 games, what was their ratio of wins to losses? Assume that there were no tie games.

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7 to 6 is the correct answer

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3 years ago

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