How to know if you got a one solution

The sets E and A are given below. E={-2,3,8) A = {0,6,8) Find the intersection of E and A. Find the union of E and A. Write your answers using set notation in roster form).

find the sum of-2 5/10 and-5 4/15. then, in two or more complete sentences, explain the steps you used to add the mixed numbers.

2=1/4 4 + b how do I find the y intercept?

What is the trinnomial of (a^2-6) and (a^2+4)

I=$450 P=$2400 R=7.5%

What is the simplified form of 30 times x to the sixth power over 14 times y to the fifth power times the fraction 7 times y-squared over 6 times x to the fourth power?

Triangle ABC has vertices A (4, 5), B (0, 5), and C (3, - 1). The triangle is translated 3 units to the left and 1 unit up. What are the coordinates of B' after the translation? a. (1, 6) b. (-3, 6) c. (0, 0) d. (3, 1)

Y = - x+2 x-3y = -18 How do i solve these so i can graph them

Chris plants a sunflower that is 6 inches tall. The sunflower is expected to grow at an average rate of 1.5 inches per day during the next month. A.

20 yards for $30.00 35 yards for $45.00 50 yards for $70.00 65 yards for $85.00 You work for a dress makers. Your boss sends you to the fabric store to buy blue fabric. She tells you to buy the best deal.