Will give brainliest (: use technology to approximate the solution(s) to the system of equations to the nearest tenth of a unit.

Average acceleration: i have no idea how to do this.

Evaluate cos2θ for cosθ = square root of 3/2

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap