Robert is 15 years older than his sister, Helen. The sum of their ages is 63. Find their ages.

What does it mean for an equation to be balanced and why must you keep an equation in balance?

Mrs. Fisher has 91 watches on display at her store she says she can arrange them into rows and columns without any watches leftover mr. Fisher says that she can only make 1 row with all 91 watches who is right and why

Find the partial derivatives f subscript x and f subscript y of the function f left-parenthesis x comma y right-parenthesis. the variables are restricted to a domain on which the function is defined.

State the Pythagorean Theorem and how would you use it to find a missing side or missing hypotenuse of a right triangle.

How would you right y-2x=3 as a function?

Five more than three times a number is less than twelve. which inequality best represents this situation?

Suppose there are 297 students going on a field trip. If each school bus can carry 58 students, estimate the number of buses that will be needed to transport all the students

The box plots display the same data set for the number of touchdowns a quarterback threw in 10 seasons of play. including outlier: excluding outlier: complete the statements describing the effect of the outlier on the measures of variability.

Write 98765000000 in scientific notation.

What is missing for the following quantity to be true? 3a. 4y. 5=5. 3a 3a 4y 5 15