Answer:
A. x²+y² = 9
Step-by-step explanation:
r = 3
So, r² = 9
Answer:
1400
Step-by-step explanation
First I made a list of all of the first 7 carriages, so that's 125, 150, 175, 200, 225, 250, and 275. After adding those you get 1400.
Answer:
D.) -4/5
Step-by-step explanation:
Ok, so we need to calculate the change in y over the channge in x, rise over run.
(3-(-2)=5 1-5=-4) -4/5
$369
Multiply 450, 8.2% and 10 to get $369
Answer: C. 100
Step-by-step explanation:
If the large tank is flowing at a constant rate of -6 per minute then we have to know that the water is moving from the tank. So is asking how many water will be left in the tank after 25 minutes.
You could use the equation
y = -6x + 250 where y is the amount of water left in the tank and x is the number of minutes.
So if x is 25 then plot it in and solve for y.
y = -6(25) +250
y = -150 +250
y= 100
