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pickupchik [31]
3 years ago
15

Explain why you can find 5÷1/3 by multiplying 5 by 3.

Mathematics
1 answer:
Alina [70]3 years ago
7 0

Dividing by a fraction is the same as multiplying the reciprocal of the fraction. What is the reciprocal of a fraction? It's essentially the same fraction, just the numerator and denominator switching places (flipping the fraction upside down). Knowing this, the following is true:

5/\frac{1}{3} = 5*\frac{3}{1}

We also need to know that whenever the denominator of a fraction is 1, the fraction is equal to the numerator itself. Knowing this, the following is also true:

\frac{3}{1}=3

Applying this to the first concept, we can say that:

5*\frac{3}{1} = 5*3

I hope this helps!

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One liter of paint covers 100 square feet. How many gallons of paint does it take to cover a room whose walls have an area of 80
mezya [45]
1 gallon is 3.78 L
100 sq feet needs 1 L
800 sq feet needs x

100/800 = 1/x
100x = 800
x = 800/100
x = 8 L

If you use the fact that 4 L = 1 gallon then you need 2 gallons of paint. I you use the more accurate 3.78 L then
1 gallon = 3.78 L
x gallon = 8 L

3.78 x = 8*1
x = 8/3.78
x = 2.12 gallons.
 
I guess you could say that 1 gallon and 1 L would do you.
8 0
3 years ago
If the product of two identical number is one thousand twenty four. Find out of the numbers​
GaryK [48]

Answer:

32

Step-by-step explanation:

1,024 will be a perfect square if it is the product of 2 of the same numbers:

Calculate the square root of 1024:

\sqrt{1024}

= 32

So, the number is 32

3 0
2 years ago
Read 2 more answers
Please answer this it would be very helpful if you did.
Dmitriy789 [7]

Answer:

See below ↓↓↓

Step-by-step explanation:

<u>Probability of getting heads</u>

  • Outcome (head) = 1
  • Total outcomes = 2
  • P (head) = <u>1/2</u>

<u></u>

<u>Probability of getting an odd number</u>

  • Outcome (odd) = {1, 3, 5} = 3
  • Total outcomes = 6
  • P (odd) = 3/6 = <u>1/2</u>

<u></u>

The outcomes are equally likely because the probabiity of each outcome is the same.

5 0
2 years ago
Choose the equation that represents the solutions of 0 = 0.25x2 - 8x.
Gre4nikov [31]

Answer:

Step-by-step explanation:

3 0
3 years ago
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Find the angle measures for this isosceles triangle.
nasty-shy [4]

Answer:

Step-by-step explanation:

3p + 6p + 6p = 180 deg

15p = 180

p = 12

thus,

36 deg, 72 deg, 72 deg     (ANS)

6 0
3 years ago
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