D. Y is negative and x is positive, so that means either B or D. Since y is negative, SUBTRACTING five would make a more negative number. So you want D.
6 into 30 is 5 & 6 into 48 is 48. She needs a total of 6 plastic containers
9514 1440 393
Answer:
2744 m/s
Step-by-step explanation:
8 times the sea-level speed of sound is ...
8(343 m/s) = 2744 m/s
_____
At higher altitude, it will be slower.
Y = a(x + 1.5)^2 - 12.5
y intercept is (0,-8) so:-
-8 = a(0+1.5)^2 - 12.5
-8 = 2.25a - 12.5
a = 4.5/ 2.25 = 2
so we have
y = 2 ( x +1.5)^2 - 12.5
solving for x when y = 0:-
(x + 1.5)^2 = 12.5/2 = 6.25
taking sqrt's x + 1.5 = +/- 2.5
x = -4, 1
so the x intercepts are (-4,0) and (1,0)
