Answer:-5.8
Explanation:4.5-8.3=-3.8 -3.8-2=5.8
Hey there,
7 / 10 + 1 / 6
1st Step : Make the denominators the same (30)
7 / 10 (multiply by 3) = 21 / 30
1 / 6 (Multiply by 5) = 5 / 30
Step 2: Add them together.
21 / 30 + 5 / 30 = 26 / 30
Hope this helps ^_^
<em></em>~Top♥
Answer:
6 knots
Step-by-step explanation:
Let the speed be v knots
then time taken to cover 500 M = 500 / v hrs
fuel consumption /hr = 216 + 0.5v^3
let F be the fuel consumption for trip
= [500/v][216 + 0.5v^3]
= 500[216/v + 0.5v^2]
dF/dv = 500[ - 216/v^2 + v]
d^2F/d^2v = 500[432/v^3 + 1] , i.e. +ve
so setting dF/dv will give a minima
500[ -216/v^2 + v] = 0
or v = 216/v^2
or v^3 = 216
solving, we get v = [216]^(1/3) = 6 knots
Answer: x=7
Step-by-step explanation: 4(7+4)=44. 7(7)-5=44.
