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sergey [27]
4 years ago
10

How does the relationship between multiplication and division help you divide rational numbers?

Mathematics
2 answers:
marin [14]4 years ago
5 0

To divide rational numbers, you turn the division problem into a multiplication problem by flipping the second rational number. Then you go ahead and multiply the tops and bottoms together to get your answer. If you can simplify your problem before multiplication, you can go ahead and do so to make your problem easier.


Kisachek [45]4 years ago
3 0
A rational number is one which can be represented using fractions. The opposite of division is multiplication and vice versa. Knowing this information, you can easily go about turning a division of two fractions into the multiplication of two fractions.
Ex.
(1/2) / (3/4) = ?
multiply the denominator of your fraction by the reciprocal of the denominator.
(1/2)*(4/3) / (3/4)*(4/3)
(4/6) / 1 = 4/6
So when dividing rational numbers, you can multiply the denominator by its reciprocal. This would be an example of converting a division problem into a multiplication one
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A model rocket is 3 inches long. The real rocket is 120 feet long.
Nana76 [90]

The units are the complete story on this question. All of the choices are over 1 so the units make the answer over one. It takes more feet than it does inches to make the scale. The correct units are 120 feet / 3 inches. That makes A and B both incorrect.

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5 0
3 years ago
A semi circle has a radius 8.2 cm
zaharov [31]

Answer:

Step-by-step explanation:

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5 0
3 years ago
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Rachel tutors English. for each hour that she tutors, she earns 50 dollars. Let E be her earnings (in dollars) after tutoring fo
n200080 [17]

Answer:

a. E = 50 H b. 950 dollars

Step-by-step explanation:

a. Since Rachel tutors English for 50 dollars for each hours, her rate is 50 dollar per hour. If she tutors for time, H hours, Her earning E = rate × time = 50 × H

E = 50H.

b. If Rachel's earnings after tutoring for 19 hours is gotten by substituting H = 19 into the equation for the earnings, E.

So, E = 50H

E = 50 × 19

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So, Rachel's earnings after 19 hours is 950 dollars.

4 0
3 years ago
What is -5x + 2 equals negative 48
VikaD [51]
The answer would be X=10
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3 0
4 years ago
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Olga has 5 times as many dimes as nickels. if she has $3.30, how many of each coin does she have
Colt1911 [192]
She should have 
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dimes: 30 . = 300
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6 0
3 years ago
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