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
Answer:8x-5y
Step-by-step explanation:
(3x-4y)-(-5x+y)
Remove brackets
3x-4y+5x-y
Collect like terms
3x+5x-4y-y
8x-5y
Answer:
Volume = 1.9 in3
Step-by-step explanation:
If the perimeter of the square base is 5 inches, we have that:
Perimeter = 4 * side
5 = 4 * side
side = 1.25 in
Then, to find the volume of the pyramid, we can use the formula:
Volume = (1/3) * side^2 * height
So we have that:
Volume = (1/3) * 1.25^2 * 3.6
Volume = 1.875 in3
Rounding to nearest tenth, we have Volume = 1.9 in3
Answer:
1/18
Step-by-step explanation:
First of all, it works well to consolidate the minus signs:
We can multiply the first fraction by 9/9 and the second one by 2/2 so they have a common denominator.
