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2 years ago

Glen invited 25 people to his birthday party.

Mathematics

1 answer:

Trava [24]2 years ago

8 0

Answer:

20% of the invited people did not attend

Step-by-step explanation:

5 out of 25 people invited didn't attend Glen's party. That means the following:

$\frac{5}{25}$ people didn't come which simplifies to $\frac{1}{5}$

Multiply $\frac{1}{5}$ by the giant one $\frac{20}{20}$ so the denominator is 100 which is the denominator used to find percentages.

You end up with $\frac{20}{100}$

$\frac{20}{100}$ = 20%

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murzikaleks [220]

Answer:

It would be on the y axis

Step-by-step explanation:

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2 years ago

The diameter of a planet is about 10,652 mi. The diameter of the planet's moon is about 25% of the planet. What percent of the v

alekssr [168]

Answer:

$2\%$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z-----> the scale factor

x----> the volume of the planet's moon

y---> the volume of the planet

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In this problem we have

$z=0.25$

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Round to the nearest whole number

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3 years ago

A frustum is formed when a plane parallel to a cone’s base cuts off the upper portion as shown. Which expression represents the

Bezzdna [24]

Think of the two pieces together as a single cone of height 19, and its volume.
Then think of only the upper piece as a cone, and find its volume.
The volume of the frustum is the total volume minus the volume of the upper piece.

The volume of a cone is:

$V = \dfrac{1}{3} \pi r^2 h$

Total volume:

$V_t = \dfrac{1}{3} \times \pi \times 7.5^2 \times 19$

Volume of upper cone:

$V_u = \dfrac{1}{3} \times \pi \times 3.5^2 \times 8$

Volume of frustum:

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3 years ago

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marin [14]

Answer:

Step-by-step explanation:

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2 years ago

The coordinates of point D are (7, 4) and the coordinates of point E are (1, −3) . What is the slope of the line that is perpend

Katarina [22]

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2 years ago