Solve x2+2x=9 using the quadratic formula. select all that apply.
x≈−4.2

x≈−3.2

x≈−2.2

x≈−1.2

x≈−0.2

x≈0.2

x≈1.2

x≈2.2

x≈3.2

x≈4.2

no real solutions

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

Multiply. write your answer in simplest form. 3/8 x 5/7

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?