Answer:
(X=Y)=(3,6)
Step-by-step explanation:
5x-4(4x-6)=-9
x=3
y=4x3-6
y=6
it was fine, thanks for asking. how was your day?
thanks for the points btw :)
6a.
Let the price of a ticket be t.
t - 2 = 7
6b.
The number of gallons is g.
7 = 2g
6c.
Sorry, but I don't know what problem 5 was, so I can't answer.
The formula for this calculation is Future Value = Payment • [((1 + I)n - 1)/I], where I = interest rate, and n = periods.
In this case, P = $800/month, n = 18 months, and I = 6% (0.06) per year.
Since the information involves months instead of years, it is necessary to divide the interest rate by 12 to obtain the monthly rate. So, 0.06 ÷ 12 = 0.005
We can then enter the information into our formula to obtain:
FV = $800 • [((1.005)18 - 1)/.005]
FV = $800 • [(1.0939 - 1)/.005]
FV =$800 • (0.0939/0.005)
FV = $800 • 18.785
FV ≅ $15,028
Answer:
x = 8
x = 7
Step-by-step explanation:
Solving x2-15x+56 = 0 by the Quadratic Formula .
According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :
- B ± √ B2-4AC
x = ————————
2A
In our case, A = 1
B = -15
C = 56
Accordingly, B2 - 4AC =
225 - 224 =
1
Applying the quadratic formula :
15 ± √ 1
x = —————
2
So now we are looking at:
x = ( 15 ± 1) / 2
Two real solutions:
x =(15+√1)/2= 8.000
or:
x =(15-√1)/2= 7.000
