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ELEN [110]
3 years ago
5

What is a common denominator for 1/7 and 1/3? a 18 b 21 c 3 d 4

Mathematics
1 answer:
Nataliya [291]3 years ago
6 0

Answer:

B. 21

Step-by-step explanation:

The fractions are there to just make the problem seem complicated, but just rewrite it without the fractions.

"What is a common multiple for 7 and 3?"

In this problem it's easy, all you have to do is guess and check.

A: A doesn't work. 7 is not a factor of 18.

B: B works! Both 3 and 7 are factors of 21.

C: C doesn't work. 7 is not a factor of 3.

D: D doesn't work. Neither are a factor of 4.

They only leave us with one solution, B.

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If a pint of cough syrup contains 473 ml of medication, how many full 13 ml doses are in the bottle?
eduard

Answer:

36

Step-by-step explanation:

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round to the lower whole number

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Answer:

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Answer:

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Step-by-step explanation:

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3 years ago
How many whole sandwiches can be made with 2 pounds of cheese if each sandwich has 3 ounces of cheese on it?
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3 years ago
2/x2-9 - 3x/ x2-5x+6 please show work
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Step-by-step explanation:

2/(x^2 -9) - 3x/(x^2-5x+6)

get those denominators factored out

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Multiply both by both denominators

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Multiply it out

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Simplify and it becomes

-3x^3 -7x^2 -x + 39

5 0
3 years ago
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