The Cartesian coordinates of the first vector are
20(cos(30°), sin(30°))
After the vector is multiplied by 2∠110°, its Cartesian coordinates are
40(cos(140°), sin(140°))
The x-component is larger than it was, but in the opposite direction. The percentage increase in the magnitude of the x-component is
x-change = (|40cos(140°)/(20cos(30°))| - 1)×100%
x-change ≈ 76.9%
The y-component is also larger than it was, but still in the +y direction. The percentage change in the magnitude of the y-component is
y-change = (|40sin(140°)/(20sin(30°))| -1)×100%
y-change ≈ 157.1%
All you would have to do is plug in 5 for t since that is the time; then you would see that the height of the object after 5 seconds is 886 ft. Hope this helped!
Step-by-step explanation:
well, it is supposed to be -3.
but you are right. something is wrong or missing here.
5x + 3 = 4x
x + 3 = 0
x = -3
maybe a "+ 1" is missing on the right side ?
5x + 3 = 4x + 1
gives us
x = -2