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2 votes
Evaluate ab for a =2 3/4 and b = 4/5

User Golvellius
by
8.0k points

2 Answers

6 votes

First convert the mixed number to the improper fraction:


2(3)/(4)=(2\cdot4+3)/(4)=(11)/(4)

Make the product:


a=2(3)/(4);\ b=(4)/(5)\\\\ab=2(3)/(4)\cdot(4)/(5)=(11)/(4)\cdot(4)/(5)

canceled 4


=(11)/(\\ot4_1)\cdot(\\ot4^1)/(5)=(11)/(1)\cdot(1)/(5)=(11)/(5)=(10+1)/(5)=2(1)/(5)

User Sledgebox
by
7.9k points
5 votes

Answer:

11/5

Explanation:

2 3/4 = 11/4 as a mixed number

a x b = 11 4

----- x -----

4 5

fours cancel out

11/5 is your final answer :D

User Kshitij Godara
by
8.1k points

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