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

Evaluate ab for a =2 3/4 and b = 4/5 - id23445127609, laylalucifer

lyhkng2720

10.03.2022

First convert the mixed number to the improper fraction:

$2\dfrac{3}{4}=\dfrac{2\cdot4+3}{4}=\dfrac{11}{4}$

Make the product:

$a=2\dfrac{3}{4};\ b=\dfrac{4}{5}\\\\ab=2\dfrac{3}{4}\cdot\dfrac{4}{5}=\dfrac{11}{4}\cdot\dfrac{4}{5}$

canceled 4

$=\dfrac{11}{\not4_1}\cdot\dfrac{\not4^1}{5}=\dfrac{11}{1}\cdot\dfrac{1}{5}=\dfrac{11}{5}=\dfrac{10+1}{5}=2\dfrac{1}{5}$

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yasyyas646646

23.12.2021

A - Mr. Smith

17.25 ÷ 3

= $5.75 ~ $6 Rounded-Off

B - Ms. Lockhart

42 ÷ 7

= $6

Each Ticket Costs approx. $6 Each

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