Example of an inverse operation

What is the golden rule for solving an equation?

Sophie is eating a 50-gram chocolate bar which contains 30% of coca. How many grams of coca are in the chocolate bar?

Elise has a budget of thirty dollars to spend on back-to-school clothes. she finds some shirts she likes that cost fifteen dollars each.

True of false: 0.004 > 0.400

A motor boat takes 4 hours to travel 128 miles going upstream. The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?

The expression √7x is equivalent to the expression x√7 True or false

3 to the power of 1170

how would you rewrite this expression with parentheses to equal the given value: 5+3*2-6. you have to make it equal 10.

Simplify the algebraic expression: 15xy - 13 + 4x + 3y + xy + 21

At 3:00 ok a truck and a car leave the same intersection traveling in the same direction. The truck is traveling at 43 mph and the car is traveling at 58 mph. At what time will they be 12 mi apart?