Use a calculator to verify that

x = 61,

x2 = 997,

y = 634,

y2 = 89,746,
and

xy = 9,232.

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Ответ:

Isabe11a

04.05.2020

Mathematics

you can always, put all fractions with the same denominator, and check whose numerator is the largest, we can do so by getting the LCD in this case it'll simply be the product of all three denominators, 10*7*9, and then multiply top and bottom of each by that quotient of the LCD and denominator.

$\bf \stackrel{\stackrel{\textit{using an}}{\textit{LCD of}}}{630}~\hfill \underset{KIM}{\stackrel{630\div 10=63}{\cfrac{3}{10}\cdot \cfrac{63}{63}\implies \boxed{\cfrac{189}{630}}}}~\hfill \underset{\underline{SANDY}}{\stackrel{630\div 7=90}{\cfrac{3}{7}\cdot \cfrac{90}{90}\implies \boxed{\cfrac{270}{630}}}}~\hfill \underset{JEFF}{\stackrel{630\div 9=70}{\cfrac{3}{9}\cdot \cfrac{70}{70}\implies \boxed{\cfrac{210}{630}}}}$

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Use a calculator to verify that x = 61, x2 = 997, y = 634, y2 = 89,746, and xy = 9,232.