Answer:
9 zebra fish and 5 neon tetras. White
Answer:
X+y=56 equation 1
X-y=16 equation 2
X+y+x-y=56+16
2x=72(divide Both side by 2)
X=36
X+y=56(from equation 1 to find y)
36+y=56
Y=56-36
Y=20
So their product is xy
36×20
720
So the answer is 720
Answer: He bought 1 magazine and 3 comic books.
Step-by-step explanation: If comic books cost $1 and magazines cost $3, the equation for the problem should look like this: 2(m) + 1(c) = 5, since you know that the brother spent $5 in total. "m" represents the number of magazines purchased while "c" represents the number of comic books purchased. If you plug in 1 for "m" and 3 for "c", the equation would be true and would equal a total of $5. Also, 1 magazine and 3 comic books would mean that the little brother did, in fact, purchase 4 items.
Step-by-step explanation:
Formula:- 4/3*Pi*r^3
= 4/3*22/7*(1/2)^3
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