Adding and subtracting unlike fractions

The formula for voltage (in volts) is given by V = IR, where I is the current in amperes, and R is the resistance in ohms. If a light bulb uses 0.4 amperes of current at a voltage of 1.

Robert bought X pounds of potatoes for $1.99 per pound. He paid for the potatoes with a $10 bill. Which of the following variable expressions represents the amount of change he received from his $10? a. 10 - 1.99x b. 1.99x - 10 c. 10 - 1.99 = 8.01 d.

The largest prime factor of thirty-eight is

Ahmed can type 50 words per minute. How many words can he type in 10 minutes?

I need to turn 16/3 into a proper fraction

What is the complete factorization of the polynomial below? X^3-2x^2+x-2

There are 80 red balloons and 20 green balloons each package of balloons. What is the unit rate in red balloons per green balloon? A. 4 B. 20 C. 40 D. 80

If a and b are two rational numbers, which expressions are equivalent to a-b? Mark all that apply. A. a-|-b|, if b>0. B. a+|-b|, if b>0. C. a + (-b), if b>0. D. a-|-b|, if b<0. E. a+|-b|, if b<0. F. a + (-b), if b<0

Mr. Henderson has 2 bouncy ball vending machines. he buys one bag of the 27 millimeter balls and one bag of the 40 millimeter balls. he puts a n equal number of each in the 2 machines. how many bouncy balls does he put in each machine

What is the equivalent ration for 12/30