17.25(6.6...)+17.25(5/3)+17.25
this will give you the answer
Answer:
f(-3) = 15
Step-by-step explanation:
Given that,
f(x) = -x + 12
You have to solve for,
f(-3) = ?
For that,
you have to put (-3) instead of x
f (-3) = -x + 12
= -(-3) + 12
= +3 + 12
= 15
Hope this helps you.
Let me know if you have any other questions :-)
Answer:
2 numbers could be 10 and 12
or - 12 and - 10
Step-by-step explanation:
let the 2 numbers be x and x + 2
since they are 2 consecutive even numbers, the difference between them is 2
the difference between the reciprocals is 1/60
we have to mulitply the 2 denominators x and (x+2) to get a common denominator for the 2 fractions
=
we can then remove the brackets from the numerator and denominator
and then cross multiply
60 * 2 = x² + 2x
120 = x² + 2x
x² + 2x - 120 = 0
we have a quadratic equation which needs to be solved
x² + 12x - 10x - 120 = 0
x (x + 12) - 10(x + 12) = 0
(x - 10) (x + 12) = 0
x - 10 = 0 or x + 12 = 0
x = 10 x = -12
Speed=distance/time
8=distance/15
120km= distance
