How to find a percentage of a number

Example: 30% off of 120 dollars

Solve by using the perfect squares method. (3x + 3) ^2 = 36 {1, - 3} {2, - 6} {-1, 3} {-2, 6}

In a practical machine, the power output is smaller than the power input. Considering the law of energy conservation, what can explain this occurrence? A. Some of the energy going into the machine is being destroyed. B.

Sharifa's white ball rolled 143 centimeters in 4 seconds and her green ball rolled 112 centimeters in 3 seconds. Which ball rolled at a greater rate of speed? white ball green ball The white and green ball rolled at the same rate of speed. red ball

How much interest is earned on a principal of 646 invested at an interest rate of 5 for two years

Round 257,349 to the nearest 1,000.

Find the sum of (3x2 + 16x + 9) and (-16x - 12)

What is - 2 (-3) (-4) ?

When a=4 and b=6 what is the value of 7a+b2:9

Add the two expressions. 8.9x-5 and - 6.8x+8 Enter your answer, in simplified form. -2.1x - 3 2.1x + 3 15.7x + 3 - 15.7x - 3

There are 8.5 coolers that need to be shipped from a warehouse. Each cooler holds 8.91 pounds of products and 2.54 pounds of packing peanuts for safe delivery.