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pishuonlain [190]
3 years ago
10

Martin's neighbors pay him $8 per week to walk their dog. He saves his money for 5 weeks. Martin buys a new bike helmet for $37.

How much money will left?
Mathematics
2 answers:
lana [24]3 years ago
6 0

Answer:

$3 will left.

Step-by-step explanation:

8*5-37=40-37=3

KIM [24]3 years ago
5 0

Answer:

$3

Step-by-step explanation:

Martin get's $8 EVERY WEEK

So, in 5 weeks, he will get:

8 * 5 = $40

He saves up all the 5 weeks, so he has all the money.

After 5 weeks, he has:

$40

Now, he decides to buy a helmet for $37. So the amount remaining is:

40 - 37 = $3

So, Martin has $3 currently

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Answer:

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Step-by-step explanation:

* Lets revise the volume of the cone and the cylinder

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* Lets solve the problem

∵ The cone has a volume 50π inches³

∵ The diameter of the cone is 10 inches

∵ The diameter is twice the radius

∴ 2r = 10 ⇒ divide both sides by 2

∴ r = 5

∵ The rule of the volume of the cone = 1/3 πr²h

∴ 50π = 1/3 π (5²)h

∵ 50π = 1/3 (25π)h ⇒ divide both sides by 25π

∴ 2 = 1/3 h ⇒ multiply both sides by 3

∴ 6 = h

∴ The height of the cone is 6 inches

- The cylinder has the same diameter and the same height of the cone

∵ The diameter of the cone = 10 inches

∵ The height of the cone = 6 inches

∴ The diameter of the cylinder is 10 inches

∴ The height of the cylinder is 6 inches

∵ The rule of the volume of the cylinder is πr²h

∵ The radius of the cylinder = 10/2 = 5 inches

∴ The volume of the cylinder = π(5²)(6) = 150π inches³

* The volume of the cylinder not equal the volume of the cone

∴ A cylinder in which h = 6 and d = 10 has a volume of 150π in³ ;

   therefore, Wilson is incorrect.

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