Solve the following quadratic equations by taking square roots.
−1)2 −5=44

−3( + 1)2 − 5 = -50

4(+1)2 −64=0

2(−1)2 −5=45

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.