What is the value of x in 21x=42?

An emperor penguin is 45 inches tall. It is 24 inches taller than a rockhopper penguin. Write and solve an equation to find the height h (in inches) of a rockhopper penguin. Is your answer reasonable? Explain

What is 3/10 * 256 simplified

Suppose the results indicate that the null hypothesis should be rejected; thus, it is possible that a type I error has been committed.

The graph below shows the solution set of which inequality

6x+72 (x+3) - 2x+52 (x+3)

A golden eagle flies a distance of 290 miles in 5 days if the eagle flies the same distance each day of its journey how far does the eagle fly per day

One third of a birds egg hatched. If 2 eggs hatched, how many eggs did the bird lay?

How do you get the estimate sum or difference for 1/8+1/4

Which statement describes the decimal equivalent of 7/8?

A computer and printer cost a total of $1038. the cost of the computer is two times the cost of the printer. find the cost of each item