Find the indicated sum.Find 2 + 4 + 6 + 8 + . . ., the sum of the first 40 positive even integers.
A. 1595
B. 1599
C. 1644
D. 1640
Answer: D
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Find an equivalent equation in rectangular coordinates.r = 2(sin ? - cos ?)
A. x2 + y2 = 2y - 2x B. 2x2 + 2y2 = x - y C. 2x2 + 2y2 = y - x D. x2 + y2 = 2x - 2y
Solve the problem.Roger earns $13.25 per hour. Find his gross pay for 29.25 hours.
A. $387.57 B. $387.46 C. $387.56 D. $387.66
Solve the problem.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. B requires 1 black, 2 white, and 1 red. C requires 2 black, 1 white, and 2 red. The company used 95 black, 100 white and 80 red wires. How many of each type of cable were made?
A. 48 A; 20 B; 12 C B. 15 A; 20 B; 15 C C. 20 A; 15 B; 15 C D. 15 A; 16 B; 15 C
Use the product, quotient, and power rules of logarithms to rewrite the expression as a single logarithm. Assume that all variables represent positive real numbers.logb x + logb y
A. logb xy B. logb (x + y) C. log2b (x + y) D. log2b xy