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3 years ago

It takes 90 minutes to vacuum 30 vehicles. At this rate, how many minutes does it take to vacuum 7 vehicles?

Mathematics

2 answers:

Ksju [112]3 years ago

5 0

Yep 21 is correct good luck

DIA [1.3K]3 years ago

3 0

Answer: 21.

Step-by-step explanation: If you do '90 x 7' you get 630. With this, you will want to divide 630 by 30. So to simplify this, '(90 x 7) ÷ 30 = 21'

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Please Help!!!!! Prove that polynomials are not closed under division.

AveGali [126]

Polynomials are not closed under division. When you divide polynomials it is possible to get quotients with negative exponents or with fractions that have exponents in the denominator, and neither of these could be included in polynomials.

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3 years ago

Does 4 1/2 times 2 3/4 equal 11 11/48?

Bad White [126]

<h3>Answer:</h3><h2>No</h2>

4 1/2 times 2 3/4 does not equals to 11 11/48.

It actually equals to 12 3/8

hope it helps

Good luck on your assignment

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3 years ago

Read 2 more answers

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inn [45]

Answer:

Step-by-step explanation:

Volume= (4/3)*pi*r^3

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3 years ago

There are two triangles. One has a base of 8cm and the height of 10 cm the other has a base of 5cm and a height of 13cm which tr

mina [271]

Answer:

The first triangle is larger

Step-by-step explanation:

(1/2)(8)(10)=40

(1/2)(5)(13)=32.5

4 0

3 years ago

Jenny can swim 10 laps In 5 minutes. How many laps should she swim in 1/3 of an hour?

DIA [1.3K]

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3 years ago