9), Eva can knit f of a scarf in an hour. Her sister takes of the time she
2 answers:
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Answer: hypotenuse =
Step-by-step explanation: Pythagorean theorem states that square of hypotenuse (h) equals the sum of squares of each side () of the right triangle, .i.e.:
In this question:
=
2bc
Substituing and taking square root to find hypotenuse:
Calculating:
=
, then:
Hypotenuse for the right-angled triangle is units
Answer:
The error is at step (3) .
The correct step (3) will be,
= [by using the laws of indices]
All other steps are correct.
Step-by-step explanation:
The error is at the step (3) , because the student has tried to prove the quotient rule of logarithms by using the property i.e., 'The quotient rule of logarithm' itself , i.e. ,by assuming the property does hold before proving it. So, the proof is fallacious.
The correct step (3) will be,
= [by using the laws of indices]
All other steps are correct.