Solve the simultaneous equations 7x+5y=32

3x+4y=23

What is 14 1/4 - 13 5/6 =

In a chemical change, the identity of matter blank does not change

You have 3 more nickels than dimes for a total of 1.50 how many of each do you have?

Suppose a population consists of 630, 000 people. Which of the following numbers of members of the population being surveyed could result in a parameter but not a sample statistic? A. neither 6300 nor 630,000 B. both 6300 and 630,000 C. 630,000 D.

4. what is the equivalent degree measure for pi/6 radians? a. 120 degrees b. pi c. 60 degrees d. 30 degrees

Multiply. write product as a mixed number.

What is h over 6 minus 1 equals negative three

A brand of cereal had 1.2 milligrams iron per serving. Then they changed their recipe so they had 1.8 of iron per serving. What was the percent increase in iron?

Show me how to do the equation 42=32-6f-4f

At a banquet the ratio of the number of boys to the number of girls is 5:3. Halfway through the banquet 20 boys leave and the ratio becomes 5:4. How many girls are at the banquet?