Answer:
=7
Step-by-step explanation:
−7+11−(−3)
=4−(−3)
=7
Answer:
I'm pretty sure it's 19,497 as the 1st nearest, and 19,515 as the 2nd
Because 19,506-9 is 19,497 and 19,506+9 is 19,515
Answer:
32
Step-by-step explanation:
77 quarters and dimes
q + d = 77
subtract q from both sides
d = 77 - q
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A collection of quarters and dimes is worth $12.50 (1250 cents)
25q + 10d = 1250
substitute for d
25q + 10(77 - q) = 1250
distribute
25q + 770 - 10q = 1250
Combine like terms
15q + 770 = 1250
subtract 770 from both sides
15q = 480
divide both sides by 15
q = 32
