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?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.