Which quadrilateral must have four congruent angles?

A. a rhombus

B. a trapezoid

C. a rectangle

D. none of the above

There are a hundred and fifty students in the fifth grade in Washington Elementary School 2/5 of the students like soccer and 3/10 of them like basketball what fraction like soccer or basketball best

The Sum of a number and 5 times the number is 18. Find the number

How can you tell whether a number is prime or composite?

Is 5/20 equal to 4/12

A number is between - 1 and - 5. What is the least possible integer value of its opposite

Round 421,906 to the nearest hundred thousand and to the nearest thousand

Jill arranged her baseball cards in 4 rows of 9 cards then she arranged the cards in 2 rows of 18 cars how many other ways can Jill arrange her baseball cards in equal rows

4, 16, 13, 52, 49, 196, 193, 772, _ What comes next?

What's 1 fourth of 1490

25 more than 50 as an expression