You stuffed 108 envelopes in 45 minutes. At this rate, how many envelopes can you stuff in 2 hours?
1 answer:
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Answer:
15 units
Step-by-step explanation:
ΔABC is right with ∠C = 90° and AB the hypotenuse
using Pythagoras' identity on the triangle
AB² = AC² + BC² , hence
BC² = AB² - AC² = 17² - 8² = 289 - 64 = 225
⇒BC = = 15 units