There are two numbers as twice as far from 23 as they are from 38. The two numbers are _ and _

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?