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e-lub [12.9K]
4 years ago
7

Which equation can be used to find the answer? an aquarium worker removed 78 fish from a tank. there were still 186 fish left in

the tank. how many fish were in the tank before any were removed?
a. f ÷ 2 =78 f = 156 156 fish
b. f ÷ 2 =186 f = 372 372 fish
c. f – 78 = 186 f = 264 264 fish
d. f + 78 = 186 f = 108 108 fish?
Mathematics
2 answers:
Lyrx [107]4 years ago
8 0

Answer:

f/2=186 fish

186 x 2 = 372

372 fish left in the tank

Step-by-step explanation:

kodGreya [7K]4 years ago
7 0
The answer is B. Hope I helped!
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Answer:  The answers are given below.

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(4)~21x^3+35x^2+9x+15\\\\=7x^2(3x+5)+3(3x+5)\\\\=(3x+5)(7x^2+3).

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(5)~9xy+36x-10y-40\\\\=9x(y+4)-10(y+4)=(y+4)(9x-10).

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(7)~4xy+9x+24y+54\\\\=x(4y+9)+6(4y+9)\\\\=(4y+9)(x+6).

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