A machine has an efficiency of 70%. How much work does the machine do when 20,000 J of work is done on it? A. 14,000 J B. 28,600 J C. 1,400,000 J D. 2,860,000 J

4^338^37 / 4^158^21 A. 4^18 8^16 B. 8^48 16^58 C. 16^18 64^16 4^18 8^58

How does tan 135 degrees compare to tan - 135 degrees

Olga runs a business out of her home making quilts. Each month she has fixed costs of $350. In addition, for each quilt she makes, she incurs an additional cost of $8.75. If her total costs for the month were $560.00, how many quilts did she make?

Mrs. Roland distributed a bag of skittles to her students. She gave each student five skittles, then ate 8 that remained in the bag. If there were originally 143 skittles in the bag, how many students does she have?

The variable z is directly proportional to x, and inversely proportional to y. When x is 14 and y is 10, z has the value 26.6. What is the value of z when x = 24, and y = 15

Simplify the expression. 4 (6 - 3) a. 7 b. 12 c. 21 d. 24

Identify the slope that goes through the two given coordinates (-3,0) (3,2) ? A) 3 B) - 1/3 C) 1/3 D) - 3

Factor completely: 3x2 - 17x - 28

If you roll a number 42 times, how many times do you expect to roll a 6?

In a scale drawing, the width of a sofa is 15 cm. The actual width of the sofa is 150 cm. What is the scale of drawing?