SAT Math: Common Math Tricks

Lesson: Adding Equations

After you watch the lesson above, try this practice problem
If $2x+3y=14$ , $2y+4z=29$ , and $3x+z=12$ , what is the value of $x+y+z$ ?

Lesson: Factors & Quadratics

After you watch the lesson above, try this practice problem
What is the average of $x$ and $y$ , if $x^2 - y^2 = 54$ and $x-y=9$ ?

Lesson: Factors & Quadratics II

After you watch the lesson above, try this practice problem
What is the value of $(a + b)^2$ , if $a^2 + b^2 = 7$ and $ab=5$ ?

Lesson: Using the Answer Choices

After you watch the lesson above, try this practice problem
Max is four years older than Joe. Ray is twice Joe's age. If the average of their ages is 12, how old is Joe?

Note: Do not move on until the activity above has been completed and submitted.