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2 answers:
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Answer:
D. Subtraction property of equality; n = 15
Step-by-step explanation:
Given equation that shows the cost of n basketballs uniforms,
C = 40n + 260
According to the question,
Total cost = $ 860,
⇒ 40n + 260 = 860
Using subtraction property of equality, subtract 260 on both sides,
⇒ 40n = 860 - 260
⇒ 40n = 600
Using division property of equality, divide both sides by 40.
⇒ n = = 15.
Hence, 15 uniforms were purchased.
i.e. Option D is correct.
Answer:
There the buoy is 17.3 m from the place where the diver started.
Step-by-step explanation:
a² + b² =c²
⇒ 10² + b² = 20²
⇒ 100 + b² = 400
⇒ b² = 400 - 100
⇒ b²= 300
⇒ b =
⇒ b = 17.3 m
There the buoy is 17.3 m from the place where the diver started.