A chunk of gold and copper in the ratio 20:7. How much gold is in this 200g sample of gold

In 1984, a 12-ounce box of cold cereal cost $0.89. In 2008, an 18-ounce box of the same cereal sold for $3.29. How much more was the cost of the cereal per ounce in 2008 than in 1984? Explain

Lin made a mixture consisting of 24 ounces of instant tea and 12 ounces of green tea. Approximately how many milligrams of caffeine per ounce were in this final mixture?

Rewrite 3/9 as a mixed number

What is the relationship between a linear pair and supplementary angles

What are some differences and similarities between a trapezoid and a square?

Which shapes have 2 pairs of parallel sides? Choose ALL that are correct.

Area and perimeter of a triangle 5,5,4,4 as the perimeters

There are 30 students in a class. The teacher will choose 2 students at random to represent the class at an assembly. How many groups of 2 students can be chosen?

Angle 1 is obtuse angle 2 and 3 are acute angle 1 plus angle 3 = ?

Twelve of the 28 students in a class have a dog. What is the ratio of students who have a dog to the students who do not?