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3 years ago

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Jeanette purchased a concert ticket on a website. The original price of the ticket was $75. She use a coupon code to receive a 2

0% discount. The website apply a 10% service fee to the discounted price. Can I stick it was less than the original price by what percent?

1 answer:

devlian [24]3 years ago

4 0

The remaining cost is $66 after 20% discount and 10% service fee

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Paul wants to add new mulch to the top of all five garden beds. the new mulch will be 10 centimetres (cm) deep. about how much n

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3 years ago

Read 2 more answers

A rock is in the shape of a sphere with a radius of 5.08 centimeters. The rock has a density of 5.5 grams per cubic centimeter.

SIZIF [17.4K]

The mass of the rock is 3020.27 grams , if a rock is in the shape of a sphere with a radius of 5.08 centimeters and the rock has a density of 5.5 grams per cubic centimeter,

Step-by-step explanation:

The given is,

Radius of the rock is 5.08 cm (Sphere)

Density of rock 5.5 grams per cubic centimeters

Step:1

Formula for volume of sphere,

$Volume, V= \frac{4}{3} \pi r^{3}$ ..........................(1)

Where, r - Radius of sphere

From the given values,

r = 5.08 cm

Equation (1) becomes,

$V= \frac{4}{3} \pi (5.08)^{3}$

$V= \frac{4}{3} (3.1415) (5.08)^{3}$

$= \frac{4}{3} (3.1415) (131.097)$

V = 549.14 cubic centimeters

Step:2

Mass of rock = Volume of rock × Density of rock

= 549.14 × 5.5 ( ∵ $cm^{3} (\frac{ gram}{cm^{3}} ) = gram$ )

= 3020.27 grams

Mass of the rock = 3020.27 grams

Result:

The mass of the rock is 3020.27 grams , if a rock is in the shape of a sphere with a radius of 5.08 centimeters and the rock has a density of 5.5 grams per cubic centimeter,

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hope it was helpful :)

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