The answer is 390km. You just multiply 130 x 3.
A snowflake falls 90 feet in 1 minute.
60 ÷ 4 = 15
6 x 15 = 90
For this case we have the following equation:
-2y2 + 6y = -2
Rewriting we have:
-2y2 + 6y + 2 = 0
Using the quadratic formula we have:
x = (- b +/- root (b ^ 2 - 4 * a * c)) / (2 * a)
Substituting values:
x = (- (6) +/- root ((6) ^ 2 - 4 * (- 2) * (2))) / (2 * (- 2))
Rewriting:
x = (- 6 +/- root (36 + 16)) / (- 4)
x = (- 6 +/- root (52)) / (- 4)
x = (- 6 +/- root (4 * 13)) / (- 4)
x = (- 6 +/- 2 * root (13)) / (- 4)
x = (- 3 +/- root (13)) / (- 2)
The roots are:
x1 = (- 3 - root (13)) / (- 2)
x2 = (- 3 + root (13)) / (- 2)
Rewriting:
x1 = -0.3
x2 = 3.3
Answer:
–0.3, 3.3
Answer:
j = ![\frac{4}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B20%7D)
Step-by-step explanation:
= j +
( subtract
from both sides )
-
= j , that is
j = ![\frac{4}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B20%7D)
Answer: 12 degrees
Step-by-step explanation: So the temperature decreases every hour by 3 degrees for 4 hours. So the first hour, the temperature will have decreased by 3. Then by the second hour, the overall temperature will have decreased by 6. The third hour, the overall temperature will be 8 degrees less, and finally on the fourth hour, it will have decreased by 12.