A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What's the efficiency of the machine? A. 92 percent B. 97 percent C. 96 percent D. 94 percent

Ryan runs 3 miles in 28 minutes. at the same rate, how many miles would he run in 42 minutes?

Write the sentence as an absolute value inequality. Then solve the inequality. twice a number is no less than 10 units from - 1?

A family has two cars. During one particular week, the first car consumed 20 gallons of gas and the second consumed 30 gallons of gas. The two cars drove a combined total of 950 miles, and the sum of their fuel efficiencies was 40 miles per gallon.

2x - 5 > 7 A. x > 6 B. x < 12 C. x < 8 D. x > 12

A variable expression cannot consist of numbers or operations. True or false

Convert the volume 5.0 m3 to the unit cm3. Show the work used to solve the problem.

Andy has read 4 chapters in 2 hours. If he continues reading at the same rate how many chapters will he have finished after 5 hours?

The diagram shows the dimensions of an office. It costs about $0.11 per year to air condition one cubic foot of space On for average, how much does it cost to air condition the office one month?

Perform the indicated operation. (-10) : (-20) 1/2 -1/2 2 -2

Hello I am making a business and I am about to sell my first bracelet I wanted to know how much should I sell it for? I paid 10$ for all the materials.