What is the vertex of x²-8x+5

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Which of the following vectors are orthogonal to (2,1)? check all that apply

You had $235 in your savings account nine weeks ago. you withdrew the same amount each week for 8 straight weeks. your balence was then $75. solve the equation 235 - 8m=75 to find how much money m you withdrew from your account each week. 2 points