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11Alexandr11 [23.1K]
3 years ago
15

Can anyone help me solve all of this? Please help

Mathematics
1 answer:
disa [49]3 years ago
6 0
They are all pretty easy all you do is multiply the cost by the amount of things you buy. For example number 4 your variables are cost (c) and songs (s). Your equation is c•s so $0.99 • s. 50 songs would be .99 • 50 which is $49.50
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A party cap is in the form of a frustum. The radii of its ends are 10cm and 30 cm. The volume of the cap is 9100. What is the he
Vsevolod [243]

Answer:

4.46cm

Step-by-step explanation:

Volume of a frustum is expressed as;

V = (1/3) * π * h * (r₁² + r₂² + (r₁* r₂))

h is the height of the frustum

r₁ and r₂ are the radii of its ends

V is the volume

Given

V = 9100cm₃

r₁ = 10cm

r₂ = 30cm

Substitute

9100 = (1/3) * (3.14) * h * (10² + 30² + (10* 30))

9100 = 1/2(3.14)*h*(100+900+300)

9100 = 1.57*h*(1300)

9100 = 2,041h

h = 9100/2,041

h = 4.46cm

Hence the height of the cap is 4.46cm

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3 years ago
Last week Shawna ran 34 miles less than Molly. Shawna ran 14 miles. how many miles did molly run?​
Zolol [24]

Answer:

Step-by-step explanation:

48 miles.

7 0
4 years ago
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Usimov [2.4K]

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Oduvanchick [21]

Answer:

X=7

Step-by-step explanation:

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Step-by-step explanation:

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