mary is 3 years less than twice as old as her sister. mary is 11 years old. write and solve an algebraic equation to find mary's sisters age.

A parallelogram has side lengths of 13 and 17 and an angle that measures 64°. Law of cosines: a2 = b2 + c2 - 2bccos (A) What is x, the length of the diagonal, to the nearest whole number? 16 18 19 21

What does the product if any whole number factor multiplied by 100 always have. Explain?

Write each number in scientific notation 0.00000000850

What is 5 1/4 - 2 1/6?

The difference between half of a number and 19.

What's the algebraic expression of "15 less than a number squared"?

Nathaniel can't remember exactly how many cupcakes Haley and Virgil made for the Halloween party but he did remember that all together Haley and Virgil and he had made 156 cupcakes he also remembered that he and Haley and made 110 and he and Virgil

3 out of 4 students surveyed in a school said they will vote for nuncio for class president predict how many of the 340 students in the school would vote for nuncio

Is 10 a solution of 2y+7 (y-3) = 60

Stephanie has pennies, nickels, dimes, and quarters in her piggy bank. The total value of the coins is 0.01 (n + 10) + 0.05n + 0.1 (n - 10) + 0.25 (n - 5), where n is the number of nickels. What must 0.1 (n - 10) represent? A.