Answer:
1.29 s
Step-by-step explanation:
h = -490t² + 1260t
810 = -490t² + 1260t
490t² - 1260t + 810 = 0
49t² - 126t + 81 = 0
(7t - 9)² = 0
7t - 9 = 0
t = 9/7
t ≈ 1.29
Answer:
1
Step-by-step explanation:
Since there are no common prime factors, the only common factor for c²d² is 1, therfore it stays as is, c²d².
I am joyous to assist you anytime.
22 x 13 is 286 and 11 x r is 11r leaving you with 286=11r and then you have to divide each side by 11 and you get r = 26
The answer is the 4th choice
Answer:
water : sucrose : saline = 1000 : 199 : 271
Step-by-step explanation:
Given Information:
Process:
- convert everything to mL (same units)
- 1 litre = 1000 ml
- water = 1 litre = 1000 ml
- water : sucrose : saline = 1000 : 199 : 271
