You plug in the x = 3y+4 into the 3x part of 3x -5y=8. You distribute the 3 and add like terms to end up with 4y=12. You divide by 4 to get y alone and get -1. That’s your y value. You plug that -1 into the y part of any of the two equations to find x. The simplest one is to plug it in to x=3y+4, and you get -3+4=x, so x= -1
No cos and ran are different values
Cos is 0.9and sin is 0.017 they aren’t exact figures but a rough estimate
Answer:
4. 6.6
1. 9043
2. 0.52
Step-by-step explanation:
3+2.24+1.36=6.6
10000-957
1.3-0.78