Answer: The reason you cross multiply fractions is to compare them. Cross multiplying fractions tells us if the two fractions are equal or which one is greater. This is especially useful when you are working with larger fractions that you aren't sure how to reduce.
It works cause they have the same denominator
bruh
Rectangular book
two 8 1/2 sides
two 9 1/4 sides
8 1/2*2=17
9 1/4*2=18 1/2
17+18 1/2= 35 1/2
The perimeter of the textbook is 35 1/2 inches or 35.5 inches.
Hope this helps :)
Answer:
13 1/15 or 196/15.
Step-by-step explanation:
First convert the mixed numbers to improper fractions.
7/3*28/5
The multiply the numerators and the denominators.
7*28=196, 3*5=15: 196/15
Hope this helps! :P
Answer:
Looks right, b is right
Step-by-step explanation:
The rest are false
