Answer:
Step-by-step explanation:
![18 {u}^{2} - 50y \\ \\ = 2[9 {u}^{2} - 25y] \\ \\ = 2[(3 {u})^{2} - (5 \sqrt{y} )^{2} ] \\ \\ = 2(3u + 5 \sqrt{y} )(3u - 5 \sqrt{y} )](https://tex.z-dn.net/?f=18%20%7Bu%7D%5E%7B2%7D%20%20-%2050y%20%5C%5C%20%20%5C%5C%20%20%3D%202%5B9%20%7Bu%7D%5E%7B2%7D%20%20-%2025y%5D%20%20%5C%5C%20%20%5C%5C%20%20%3D%202%5B%283%20%7Bu%7D%29%5E%7B2%7D%20%20-%20%285%20%5Csqrt%7By%7D%20%29%5E%7B2%7D%20%5D%20%20%20%5C%5C%20%20%5C%5C%20%20%3D%202%283u%20%20%2B%205%20%5Csqrt%7By%7D%20%29%283u%20-%205%20%5Csqrt%7By%7D%20%29)
Answer:
the smallest is 0.007 then 0.031 then 0.104 then 0.782 and the last one 0.801
2x + 3y = 6
-2 -2
3y = -2x + 6
Divide by 3 on all sides:
y = -2/3x + 2
Answer - y = -2/3x + 2
x - 3y = 9
-x -x
-3y = -x + 9
Divide by -3 on all sides:
y = 1/3x - 3
Answer - y= 1/3x - 3
Hope this Helps!!
Answer:
The sign of acceleration is positive.
Step-by-step explanation:
Consider the provided information.
It is given that A student drops a penny from the top of a tower and decides that she will establish a coordinate system in which the direction of the penny's motion is positive.
Here the direction of the velocity is positive, and the velocity is increasing.
Acceleration is defined as the rate at which an object changes its velocity.
Since velocity is positive therefore the acceleration is also positive.
Hence, the sign of acceleration is positive.