Question

1. Type mmnn using exponents.

2. Solve 3x = 5 + 7.

x =


3. Solve x/3 = 7.

x =

4. Solve .5x = 12.

x =

5. Solve 4x - 6 = 2x + 4.

x =

6. Evaluate 3x^2 if x = 6.

7 . Evaluate 3y^2 + 2y if y = 3.

Answer 1

Answer:mmm=m to the power of 2

Step-by-step explanation:Division

Answer 2

Explanation:

`\bold{1.}\\\\\ mmnn=m^2n^2=(mn)^2\\\\\bold{2.}\\\\3x=5+7\\3x=12\qquad\text{divide both sides by 3}\\x=4\\\\\bold{3.}\\\\(x)/(3)=7\qquad\text{multiply both sides by 3}\\x=21\\\\\bold{4.}\\\\0.5x=12\qquad\text{multiply both sides by 2}\\1x=24\\x=24\\\\\bold{5.}\\\\4x-6=2x+4\qquad\text{add 6 to both sides}\\4x=2x+10\qquad\text{subtract 2x from both sides}\\2x=10\qquad\text{divide both sides by 2}\\x=5`

`\bold{6.}\\\\3x^2\ for\ x=6\ /\text{put x = 6 to the expression}/\\\\3(6)^2=3(36)=108\\\\\bold{7.}\\\\3y^2+2y\ for\ y=3\ /\text{put y = 3 to the expression}/\\\\3(3)^2+2(3)=3(9)+6=27+6=33`