When a mathematician writes QED at the end of a proof, what does this mean?

3. Which class has a ratio of girls to total students of 7 : 102 O A. class with 3 boys and 7 girls O B. class with 7 boys and 3 girls O C. class with 7 boys and 10 girls O D. class with 10 boys and 7 girls

Find the product. Do not round. 2.78 · 9.3 =

Myrtle took out a 3-year loan for 2050$ at a computer retailer to be paid back with monthly payments at 12% apr compounded monthly.

Which expression is equivalent to x6 - 9?

All the factors of 21

The table below contains values for a linear relationship. One value from the table is missing. x - 3 - 1 0 2 4 7 y 7 3 1 ___ - 7 - 13 What is the missing value? The missing value is .

During unusually cold weather, the temperature is Miami beach was 10 C. This was 12 degrees more than in Tallahassee. What is the temperature in Tallahassee?

The Fiedler family has up to $130,000 to invest. They decide that they want to have at least $40,000 invested in stable bonds yielding 5.5% and that no more than $60,000 should be invested in more volatile bonds yielding 11%.

Nicola claims that the product of any fraction and 1/6 will always be less than 1/6.

Are the number of units taken by students in a class discrete or continuous data?