jmae811
25.10.2020 •
Mathematics
What’s the unit rate for 10 1/3 miles per 1/6 hour
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Ответ:
30 miles ÷ 2.5 hours
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 2.5
30 miles÷ 2.5
2.5 hours÷ 2.5
=
12 miles
1 hour
=
12 miles
hour
= 12 miles per hour
Ответ:
Answer with explanation:
The given function is
f(x)= | x² -x-2|
x²-x-2
=x²-2 x + x -2
= x (x -2)+1(x-2)
= (x+1)(x-2)
Modulus of any polynomial function will always yield positive value.
All the points lying on x axis, above x axis which is in between the parabola and on and inside the parabola are solution of the given equation.