Mathematics: A group of 40 children attended a baseball game on a field trip.Each child received either a hot dog or bag of popcorn.Hotdogs were 2.25 and popcorn was $1.75.If the total bill was $83.50,how many hotdogs and bags of popcorn were purchased

A group of 40 children attended a baseball game

antoinewill05

22.01.2022

20 hotdogs and 22 bags of popcorn.

Step-by-step explanation:

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dolphin5836

05.05.2021

It can't be expressed in that form

Step-by-step explanation:

From difference of two squares:

${ \boxed{(a + b)(a - b) = ( {a}^{2} - {b}^{2} )}}$

a » 9

b » 2i

$(9 + 2i)(9 - 2i) = \{ {(9)}^{2} - {(2i)}^{2} \} \\ \\ = (81 - 4 {i}^{2} )$

but i² is -1 [ complex numbers ]

$= \{81 - 4( - 1) \} \\ = 81 + 4 \\ = 85$

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