Answer:
2/3 hours
Step-by-step explanation:
40 minutes = 40/60 = 2/3 hours
Answer:
± 7
Step-by-step explanation:
Given
d =
, then
d = 7 or - 7, that is ± 7
Since 7 × 7 = 49 and - 7 × - 7 = 49
Answer:
This would represent 9/4, or 2 1/4
Step-by-step explanation:
9/10 / 4/10 = 9/4
Answer: 45cm
Step-by-step explanation:
The spring stretches 1/3 of the weight attached. 1/3 of 15 is 5. However, the spring is already 40cm long so we must add 5 to 40 to find the total length and of the spring.
Axis -b/2a=-12/2*3=-2
vertex(-2,-3)