Take x-2=0
x=2
put the value of x in the equation
2^2 + 3(2) + k =0
4+6+k=0
10+k=0
k= -10
hope you understand
Answer:
x = 2
Step-by-step explanation:
Distribute the parenthesis on the left side
5x + 3x + 12 = 28
8x + 12 = 28 ( subtract 12 from both sides )
8x = 16 ( divide both sides by 8 )
x = 2
Given:
P = $8000, the principal
r = 5.99% = 0.0599, the interest rate
t = 60 months = 5 years, the duration
Assume n = 12, monthly compounding.
n*t = 12*5 = 60
r/n = 0.0599/12 = 0.004992
The total value of the loan is
A = P(1 + r/n)⁶⁰
= 8000(1.004992)⁶⁰
= 10785.434
Monthly payment = 10785.434/60 = $179.76
Answer: $179.46
Look at the tenth's place. (:
The tail of the train starts one mile from the mouth of the tunnel and it must travel that distance plus the length of the tunnel in 3 minutes.
Let t = tunnel length
t + 1 = distance the tail must travel in 3 minutes.
3 minutes = 1/20 hr
(t+1) miles / 60 m/hr = 1/20 hr
t + 1 = 60/20
t+1 = 3
Subtract 1 from each side:
t = 2
The tunnel is 2 miles long.
