Answer:
A
Step-by-step explanation:
Total distance between the trains = 348 miles
Total time to cross that distance by trains = 3 h.
So, sum of their speed would be: 348/3 = 116
A.T.Q,
Speed of train 1 - speed of train 2 = 22
so, two equation that has formed are:
a+b=116
a-b=22, a=b+22
Substitute that in above equation; b+22+b=116
2b= 94, b=47 & a=116-47 =69
Speed of the TRAIN IS 47 & 69 miles per hour.
Did you understand?
Using the future value annuity to solve the question we proceed as follows:
FV of annuity=P{[(1+r)^n-1]/r}
P=periodic Payment
r=rate per period
n=number of periods
from the question:'
P=$3,800
r=8.5%
n=5 years
hence:
A=3800{[(1+0.085)^5-1]/0.085}
A=$22,516.42
The answer choices tell you this is a parabola.
The given points tell you it opens upward and the vertex is (2, -3).
Your knowledge of the vertex form of the equation is the only "technology" that you need. The vertex form is
y = a(x - h)² + k . . . . . for vertex (h, k)
The fact that the y-value is 1 more than its vertex value when |x-2| = 1 tells you the scale factor "a" is 1.
You can write the model as
D. f(x) = (x -2)² - 3
Answer:
I love turtles I used to have one