How much of an alloy that is 40% copper should be mixed with 300 ounces of an alloy that is 80% copper in order to get an alloy that is 50%?

There are about 320 million people living in the United States. Of these, how many would you predict wear corrective lenses

If you are going to a foreign country, a bank can sell you money of that country in exchange for dollars. True False

There are 14 apples in a basket. 8 of these are green. The rest of them are red. (a) what is the ratio of green apples to red apples? (b) what is the ratio of red apples to all apples in the basket?

The ratio of the number of boys to the number of girls in a school is 4:5 there are 95 girls in the school work out the total number of students in the school

Brent biked 600 meters on Friday. On Saturday he biked 5 kilometers. On Sunday he biked 4 kilometers, 800 meters. How many kilometers did Brent bike over the three days?

Which property is demonstrated by the following statement? 15+w + (-12) = 15-12+w

9 m 7 m (23 m) What is the area

What are the factors of 34

Find the area of the rectangle 9ft and 14ft

Ms. Alvarez wants to determine the seventh graders' preferences for the location of the end-of-year field trip. Which of the samples is representative of the population?