13) John and James live 0.7km apart. If John takes 25cm steps, then how many steps would it take
1 answer:
It will take John 2800 steps to walk from his house to James' house
Step-by-step explanation:
First of all we have to convert all the measurements in same unit.
Distance = 0.7 km
As 1 km = 1000 m
0.7*100 = 700m
And
1 m = 100 cm
700*100 = 70000cm
Now,
25 cm = 1 step
It will take John 2800 steps to walk from his house to James' house
Keywords: Conversions, Lengths
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Answer:
1
Step-by-step explanation:
Factorise numerators/ denominators where possible
3x² - 4x + 1 = (x - 1)(3x - 1)
x² - 1 ← is a difference of squares and factors as
x² - 1 = (x - 1)(x + 1)
Expressing the product in factored form
×
Cancel common factors on numerator/denominator, that is
Cancel (x - 1) , (x + 1) and (3x - 1), leaving the simplified form 1
Because they're not inverses, not exactly. is not invertible on its entire domain because it's not one-to-one. There are infinitely many values of
such that
, for example.
The standard function has a domain of
and outputs values between
and
. This means that its inverse,
, is indeed its inverse as long as
.
is larger than
and thus does not fall in the "invertible part" of the domain of
. We have
which is a value between -1 and 1, so that
If we wanted to recover , we'd have to redefine
or define a new inverse function that works on a different branch of the domain of
.