21 + 15 = 36
36 x 3 = 108
Their father donated $108 to charity
Step-by-step explanation:
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Add '-1' to each side of the equation.
1 + -1 + 3d = 10 + -1
Combine like terms: 1 + -1 = 0
0 + 3d = 10 + -1
3d = 10 + -1
Combine like terms: 10 + -1 = 9
3d = 9
Divide each side by '3'.
d = 3
Simplifying
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Answer: For the first on its a total of $5 dollars for the second one its a total of $3.45 cents
So all in total $8.45
Answer:
381.70350741116 inches^3
Step-by-step explanation:
4/3 πr^3 = 4/3 x π x 4.5^3 = 381.70 inches ^3
