Hippiekoolaid

05.11.2020 • 

Mathematics

Carmine buys 9 plates for $2 each. He also buys 10 bowls. Each bowl costs twice as much as each plate. The store is having a sale that gives Carmine $4 off the total cost of the bowls.
Which numerical expression shows how much he spent?
A
(9 * $2)+((10 $4) - $4]
B
(9 * $2)+(10 ($18 - $4)]
C
(9 * $10) + [(10 $4) - $4]
(9* $2)+((10 x $18) - $4)
Please help will give brainliest answer!

Ответ:

aliami0306oyaj0n

21.05.2022

Mathematics

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These equations seem tricky, but aren't as hard as you think. Just solve it like you are regularly adding fractions.

Your common denominator is 9x + 9, so

1/(9x+9)  =  36/(9x + 9)   -    (5x + 5)/9

1 - 36 + 5x + 5 / 9x - 9
30x - 30/9x - 9
10x-10/3x - 3
10(x-1)/3(x-1)
10/3

Hope this helped!

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