5/7 is a fraction in simplest form. To simplify a fraction, you always have to divide the numerator and denominator by the same number other than 1. Since 5 and 7 are only divisible by 1, 5/7 is the simplest form of the fraction.
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Answer:
the 2 right ones..because they have the dashes meaning congruent
Step-by-step explanation:
the left 2 have different measurements
Suppose, initially the ladder is so close that height of the ladder, which is 10 m to the point at which its upper end has reached.
When we pull the bottom of the ladder to such a place that it has come down by 7 m and its upper end is now 3 m from the ground. If we take the base y m, then
Using Pythagorus theorem,
y2 = 10^2 - 3^2 = 100 - 9 = 91
y = 9.54 m
The speed by which ladder was pulled was 2 m/min
So time taken to cover 9.54 m woulds be 4.77 min
As the ladder has come down by 7 m in 4.77 min, its speed for coming down was 7/4.77 = 1.47 m/min
Answer:
6
Step-by-step explanation:
must i explain