Select all of the following that are quadratic equations.

3x2 + 5x - 7 = 0

x3 - 2x2 + 1 = 0

2x - 1 = 0

5x2 + 15x = 0

6x - 1 = 4x + 7

x2 - 4x = 4x + 7

If two congruent angles are supplementary, what must be true of the two angles

What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic function?

You deposit $250 in a bank account that pays an annual interest rate of 2%. How much simple interest will you earn after two years?

Find the Value of PT. PT=4x-6 and TQ=3x+4

Which of the following is the equation of a line in slope-intercept form for a line with slope = and y-intercept at (0,-4) ? O A. y = 1x+4 O B. y = - x-4 O c. x = y-4 O D. y=--x-4

EUR/USD = 1.11706 How much USD is 300 EUR?

What's four plus twenty eight

Line m is drawn so that it is perpendicular to two distinct planes, Q and R. What must be true about planes Q and R? A) q and r are skew B) are parallel C) perpendicular D) they intersect but are not perpendicular

Write (27a^-6) ^-2/3 in simplest form.

Tasha finished a job in 3/4 hour. megan finished it in 4/5 of the time Tasha took. how long did megan take to finish the job