4 years ago

If the product ab is 0, then either a or b must be

Mathematics

1 answer:

algol [13]4 years ago

8 0

0 because 0 times anything is 0

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aliya0001 [1]

Answer:

For 20 tickets its 35 dollars

For 50 tickets its 87.50 dollars

For r tickets its 140 dollars

Step-by-step explanation:

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3 years ago

The sum of two numbers is 20

Otrada [13]

Answer:

larger number: 13

smaller number: 7

Step-by-step explanation:

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3 years ago

A teacher must grade 32 reports. She can grade 4 reports in 90 minutes. How many hours will it take to grade 32 reports?

Nataly_w [17]

Answer:

The teacher will take 720 minutes or 12 hours to grade 32 reports.

Step-by-step explanation:

32 reports= x

4 reports= 90 minutes

Cross multiply method

90*32= 4x

2880= 4x

x= 720

The teacher will take 720 minutes or 12 hours to grade 32 reports.

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3 years ago

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Step-by-step explanation:

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3 years ago

Which expression is equivalent to StartRoot negative 80 EndRoot?

mestny [16]

Answer:

$4i\sqrt{5}$

Step-by-step explanation:

$\sqrt{-80}$

$\sqrt{80*i^2}$

i^2 is -1

$i\sqrt{80}$

$i\sqrt{4^2 * 5}$

$4i\sqrt{5}$

Answer: $4i\sqrt{5}$

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3 years ago

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