Step-by-step explanation:
Assuming:

subtract a from both sides

multiply both sides by 5

divide both sides by 3

____________________
if,

multiply both sides by (5+a), then divide both sides by 3

Answer:
60
Step-by-step explanation: if he through 25 in five mintutes then he did 50 in ten minutes and each mintues he throws five so the extra two times would be ten and 50 plus ten is 60
Answer:
155.25 grams
Step-by-step explanation:
40 = X(½^(9/4.6))
X = 40 ÷ (½^(9/4.6))
X = 155.25 grams
Answer:
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Step-by-step explanation: