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Yuki888 [10]
3 years ago
5

Plz help brain fam!

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
8 0
What would make finding the answer a bit easier, is converting them into improper fractions. You would turn that first fraction to \frac{-9}{4} and the second fraction to \frac{-3}{2}. (You are dividing a negative by a negative, therefore, your answer would be a positive.

Let's follow the procedure of keeping, switching, and flipping. You keep the first improper fraction, switch the division sign to a multiplication sign, and flip the second fraction. That would make it : \frac{-9}{4} ×\frac{-2}{3}.

You multiply the 9 and the 2, you get 18. You multiply the 3 and the 4, you get 12. That makes it \frac{18}{12}. This, converted to a mixed fraction, makes 1\frac{6}{12}., which is the same as  1\frac{1}{2}. Your answer is the SECOND CHOICE.
Bezzdna [24]3 years ago
7 0
-2 \frac{1}{4} :(-1 \frac{1}{2} )= \\ \\ = -\frac{9}{4} : (- \frac{3}{2} ) = \\ \\ = - \frac{9}{4} \times (- \frac{2}{3} ) =  \\  \\ =  \frac{18}{12} =  \\  \\ = \frac{9}{6} =  \\  \\ =  \frac{3}{2} = 1 \frac{1}{2} 

Obs.
          (-) × (-) = + 
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Answer:

327 children and 318 adults

Step-by-step explanation:

The x be the amount of children and y be the amount of adults that were at the swimming pool. We can use this to set up a system of equations:

x+y=645

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Move y to the other side in the first equation to isolate x and solve the system using substitution:

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Distribute

1128.75-1.75y+2.50y=1367.25

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Subtract 1128.75 from both sides

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