Answer:
2
Step-by-step explanation:
(2 7/6) - 7/6= 2
2 7/6 is just 2+7/6 then subtract 7/6 and get 2.
Answer: 136 m
Step-by-step explanation:
For first interval,
Time = 2 hours 40 minutes = ![2+\dfrac{40}{60}\text{ hours}\ [\text{1 hour = 60 minutes}]](https://tex.z-dn.net/?f=2%2B%5Cdfrac%7B40%7D%7B60%7D%5Ctext%7B%20hours%7D%5C%20%5B%5Ctext%7B1%20hour%20%3D%2060%20minutes%7D%5D)

Speed = 18 m/h
Distance =
[Formula : Distance=Speed x time]
For second interval,
Time = 1 hour 50 minutes = ![1+\dfrac{50}{60}\text{ hours}\ [\text{1 hour = 60 minutes}]](https://tex.z-dn.net/?f=1%2B%5Cdfrac%7B50%7D%7B60%7D%5Ctext%7B%20hours%7D%5C%20%5B%5Ctext%7B1%20hour%20%3D%2060%20minutes%7D%5D)

Speed = 24 m/h
Distance = 
Total distance = 48 m +88 m = 136 m
Hence, he went 136 m.
Answer:
Step-by-step explanation:
-5f=-3(8-f)
Opening bracket
-5f = - 24 + 3f
Collecting like terms
-5f - 3f = -24
-8f = -24
Dividing by -8
f = -24/-8
f = 3
Answer:
7
Step-by-step explanation:
If J is Joan's current age and E is Ellen's current age, then:
J = E + 5
(J - 3) + (E - 3) = 17
Solve the first equation for E:
E = J - 5
Substitute into the second:
(J - 3) + (J - 5 - 3) = 17
J - 3 + J - 8 = 17
2J - 11 = 17
2J = 28
J = 14
Joan is 14, so in 7 years, she will be 21.