Try this option:
1. for vertex (2;1) the first equation is: h=-b/2a, it means 2=-b/2a or b=-4a;
2. for vertex (2;1) the second equation is: ax²+bx+c=y, it means 1=4a+2b+c;
3. for point (6;7) the third equation is: ax²+bx+c=y, it means 7=36a+6b+c.
4. using three equation, it is possible to make up the system of equations (and solve it). Details are in the attached picture.
answer:
The graph is in the attachment.
The answer that I got was:
8y (y-3x)
because I divided everything by 8y and then just did simple math
hope this helps
Answer:
Hello,
Answer A: 35 dimes and 5 nickels
Step-by-step explanation:
Let say
d the number of dimes
n the number of nickels
There are 25 coins: d+n=25
Total value : 0.1*d+0.05n=2.25
the answer is negative 168
Answer:
choice A. average rate of -3 feet/sec from 3 sec. to 5 sec
Step-by-step explanation:
f(x) = −x2 + 5x + 4 where f(x) represents the height, in feet, at x seconds
find average rate of change of f(x) from x = 3 to x = 5 seconds
find f(3) = - 3*3 + 5*3 + 4 = -9 + 15 + 4 = 10 feet.
find f(5) = -5*5 + 5* 5 + 4 = 4 feet.
average rate of change = (4 - 10)/(5 -3 ) = -6/2 = -3 feet/sec.
on average water falls 3 feet /sec from 3 to 5 seconds choice A.