Tayng's answer to rick's Secondary 1 Maths Singapore question.
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Date Posted:
8 months ago
tysm but im confused on how did the index notation for 140 become 2 to the power of 3 times 5 times 7 i thought it was 2 to the power of 2?
140=56k
56=2^3 * 7
Then equate
140=2^3 * 7 * k
2^2*3*5*7=2^3*7*k
By observation,
K=5
56=2^3 * 7
Then equate
140=2^3 * 7 * k
2^2*3*5*7=2^3*7*k
By observation,
K=5
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