Answer:
adult = £7 and child = £2
Step-by-step explanation:
let a represent adult ticket and c child ticket, then
2a + 3c = 20 → (1)
a + 4c = 15 → (2)
Multiply (2) by - 2 and add to (1) to eliminate a
- 2a - 8c = - 30 → (3)
Add (1) and (3) term by term
- 5c = - 10 ( divide both sides by - 5 )
c = 2
Substitute c = 2 into either of the 2 equations and solve for a
Substituting into (1)
2a + 3(2) = 20
2a + 6 = 20 ( subtract 6 from both sides )
2a = 14 ( divide both sides by 2 )
a = 7
Cost of adult ticket is £7 and child ticket is £2
Height (h)= 150 m, 650 m3 /s.
150 m, average flow rate = 650 m3 /s.
Power = force x velocity, velocity = flow rate /area.
Power flow= force x flow rate /area.Pressure = force / areaPower flow= pressure x flow rateNow,
a) Pressure = h ρ g
Pressure = 150 m * 1000 kg/m3 * 9.81 m/s^2
Pressure = 1471500 Nm^2
=> Power flow= 1471500 Nm^2 * 650 =956475000 W = 9.56 ×10^8 W
b)Ratio of this power to the facility = Power flow / average power
b)Ratio of this power to the facility = Power flow / average power
Ratio of this power to the facility = 9.56 × 10^8 W / 680 MWRatio of this power to the facility = 0.0405 ×10^2
Ratio of this power to the facility = 1.405
To find out area of circle bit u do (pi x r^2) /4
(3 x 6^2)/4
(3x 36) / 4
108/4 = 27
So area of circle bit is 27
For square you do:
6x6 = 36
ANSWER:
36+27 = 63
The answer is 63m^3
Okay, so on number one I have no idea. I keep getting 20 because 14 - (-3)2 = 14- (-6) which is really 14 + 6=20.
Number 2 is r+15=61
Number 3 I didn't get any of those answers because you have to solve what is in the parenthesis first so3*5= 15+1=16 then you multiply that by two giving you 16*2=32 and 42-32=10
30-[(9x2)-(3x4)]
30-[18-(3x4)]
30-(18-12)
30-6
24