Answer:
thus the father is 64 years and son is 37years
Step-by-step explanation:
Let father be X and son be y
X=27+Y...........(I)
X-10=2(Y-10)
putting the value of X from eqn(I)
27+Y-10=2Y-20
Y+17=2Y-20
17+20=2Y-Y
37=y
X=27+Y
X=64
Answer:
A. -8
Step-by-step explanation:
The average rate of change can be found with the formula
[f(b) - f(a)]/(b - a) on the interval a to b
Here, a = 3, b = 5, f(a) = -10, and f(b) = -26. Plug in the values and simplify...
[-26 - (-10)]/(5 - 3)
[-26 + 10]/2
-16/2
-8
3.8 Is the correct answer
Hello : let h =f(t)
<span>the ball hit the ground if : f(t) =0
solve : </span><span> -16t² + 20t + 6=0
</span><span>Δ = b²-4ac ... a = -16 b= 20 c =6
</span>Δ =(20)²-4(-16)(6) = 784 = 28²
t1 = (-20-28)/-32 = 48/32 =3/2
t2 =(-20+28) /-32 <span>< 0 refused
conclusion : t=3/2</span>
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
8 16 24 32 40 48 56 64 72 80 88 96 104 112 120 128 136 144 152 180
Simplified 3/4
