How do you decide which variable to substitute when solving system of equations by substitution? Explain.

An angle measures 4° more than the measure of a complementary angle. What is the measure of each angle?

A 12 pack of scented pencils sells. for $3.00 at the book store. What is the sales tax rate is the total cost of the pencils is $3.21

Each of the 34 members of the travel club plans to read a travel guide book this month the book has 86 pages this model can be used to find the total number of pages the travel club members will read this month

Which computer program can you use to write, edit, print, and perform any modifications to a document?

A certain virus infects one in every 300 people. A test used to detect the virus in a person is positive 70% of the time when the person has the virus and 15% of the time when the person does not have the virus.

Two parents each have blood type AB, and their first child is blood type AB. What is the probability that their second child will have blood type AB? (Express the probability as a percent. Enter the number only without the percent sign.

Fraction as a decimal, use bar notation id necessary 3/11 = - 5/8 = - 7/10 = 2 5/7 =

Angle 1 and Angle 2 are complementary angles. Angle 1=20 degrees. Angle 2=2p. Solve for p

A car travels between two towns 80 miles apart in 2 hours. what is its average speed? a. 80 miles/hour c. 100 miles/hour b. 160 miles/hour d. 40 miles/hour

Michael started a savings account with $300 after four weeks he had $350 and after nine weeks he had $400 what is the rate of change of money in a savings account per week