Eh can travel 4875 feet in 15 minutes.
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x lbs * 5.5 + 100 lbs * 6.25 = (x+100) * 6.00
distribute
5.5x + 625 = 6x+600
subtract 5.5 x from each side
625 = .5x +600
subtract 600 from each side
25 = .5x
divide each side by .5
x = 100
You need 100 pounds of the 5.50 mix
Answer:
x = (-5±√65)/4
Step-by-step explanation:
ax^2 + bx + c
a= -2
b= -5
c= 5
Plug those into the quadratic formula and it will give you your zeros.
2x+6=2(x+3)
Step-by-step explanation:
let x represent the unknown number
Answer:
A(t) = amount remaining in t years
= A0ekt, where A0 is the initial amount and k is a constant to be determined.
Since A(1690) = (1/2)A0 and A0 = 80,
we have 40 = 80e1690k
1/2 = e1690k
ln(1/2) = 1690k
k = -0.0004
So, A(t) = 80e-0.0004t
Therefore, A(430) = 80e-0.0004(430)
= 80e-0.172
≈ 67.4 g
Step-by-step explanation:
hope it helpful for you ❤️
