A student is asked to calculate the value of 372 − 292 using the identity x2 − y2 = (x − y)(x + y). The student's steps are shown below. Step 1: 372 − 292 = (a − b)(a + b)
Step 2: = (c)(d)
Step 3: = (8)(60) + 8(6)
Step 4: = 480 + 48
Step 5: = 528

What are the values of a, b, c, and d?

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?