Compare the expressions. Write < > or =.
9. -15 + 3 - 7
-9 - 1 + 16

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.