How do you know whether to add on both sides or subtract on both sides when solving an equation

A pair of vertical angles have measures (2y+5) ° and (4y) °. What is the value of y? A: - 5/2 B: - 2/5 C: 2/5 D: 5/2

a rectangle has a length of (x + 6) feet and width of (x-2) feet. has a area of 48 feet squared, find the dimensions

4. Where in the ocean does the water droplet need to be located in order to evaporate? A. inside a deep-sea dweller B. in the middle of the ocean C. on the surface of the ocean D. at the bottom of the ocean

Solve each problem and write your answer in scientific notation

Joy is planning to purchase a sweater that costs $30 dollars at her local department store. The sweaters are on sale for 20% off. Which steps are needed to find the sale price of the sweater? A. Convert the percent to its decimal equivalent.

For each of the following variables, state whether it is quantitative or qualitative. If it is quantitative, specify continuous or discrete. If it is qualitative, specify nominal or ordinal. Whether a gallon of milk is organic or regular. A.

The ratio of girls to boys who participated in the quiz bowl was 7 : 5. there were 42 girls in the competition. how many boys participated

Helen divides up some money to give equally to her eight nieces. If d represents the total amount, enter an expression to represent how much money each niece receives.

How many triangles can be constructed with angles measuring 80 degrees, 80 degrees, and 40degrees A. More than one B. none C. One

The moon is 2.4 X 10^5 miles from Earth. Assume the speed of the fastest spacecraft is 3.6 X 10^4 miles per hour.