What blanks?
900x6 is 5400 tho
72+28+66+81=297
360-297=63
She would need to score 63 on her last exam.
Answer:
235.54 N
Step-by-step explanation:
Since this is an addition of vectors, we need to find the components of each in the x-y plane. Given that the first vector (100 N) is along the x axis, it consist of just x component of size: 100N.
For the second vector, its x-component will be given by the cosine projection on the x axis via:
x-component ![=150*cos(40^o)=114.9](https://tex.z-dn.net/?f=%3D150%2Acos%2840%5Eo%29%3D114.9)
and its y-component will be given by the "sine" projection:
y component ![=150*sin(40)=96.42](https://tex.z-dn.net/?f=%3D150%2Asin%2840%29%3D96.42)
Therefore the addition of the x-components for the final vector is:
100N + 114.9N = 214.9 N
Now we use the Pythagorean theorem to find the magnitude of the resultant addition of vectors:
![\sqrt{96.42^2+214.9^2} =\sqrt{55478.8264} =235.54 N](https://tex.z-dn.net/?f=%5Csqrt%7B96.42%5E2%2B214.9%5E2%7D%20%3D%5Csqrt%7B55478.8264%7D%20%3D235.54%20N)
The answer is C.
Note when Soro divides both sides by -2.5 to solve the equation. When multiplying/dividing by a negative number, one should always reverse the inequality sign, but Soro forgot to do this.
-2.5x≥-30
After this step, the answer SHOULD HAVE been:
x≤12
Let me know if you need any clarifications, thanks!