Answer:
A) 
B)
C) d=200-7t
D) t=28.57s
Step-by-step explanation:
A) in order to solve this part of the problem, we must remember that velocity is the ratio between a displacement and the time it takes for a body to go from one point to the other. So we can write it like this:

when solvin for the distance x, we get the formula to be:

We can use this to write the expression they are asking us for, so we get:

B) the procedure for part b is the same as the procedure for par A with the difference that Carolyn's speed is different. So by using the same formula with Carolyn's speed we get:

C)
In order to find the distance between Ian and Carolyn, we subtract the distances found on the previous two questions from the 200ft, so we get:

we can further substitute the d's with the equations we found on the previos two parts of the problem, so we get:

which simplififfes to the following:
d=200-7t
D) we can figure the seconds out by substituing the distance for 0 and solving for t, so we get:
0=200-7t
which can be solved for t, lke this:
-7t=-200

The average temperature for the day would be 45.5°F and it seems they are cooling degree days.
Answer:
A, B, D, F
Step-by-step explanation:
Given
f(x) = (x + 3)(x - 1)(x - 2)(x + 2)
To find the zeros let f(x) = 0, that is
(x + 3)(x - 1)(x - 2)(x + 2) = 0
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3 → B
x - 1 = 0 ⇒ x = 1 → F
x - 2 = 0 ⇒ x = 2 → D
x + 2 = 0 ⇒ x = - 2 → A
The answer is that they are congruent.
Answer:
$13,310
Step-by-step explanation:
Your formula is A=P(1+r/n)^nt
P is what you put into the account = 10,000
R is the interest rate as a decimal = .1
T is the time in years= 3
In the formula this would be:
10,000(1+.1/1)^3
Use a calculator.
The answer is 13,310