I think the answer is 5 feet because 2(2+5)= 4+10=14. So the missing length is 5 feet.
Answer:

Step-by-step explanation:

The first step is to add -5 to both sides:

The next step is to divide 3 on both sides:


Answer:
2
Step-by-step explanation:
Area of a square =
(<em>s is a side length)</em>
<em>24 = </em>
=
= <em>s</em>
= <em>s</em>
<em>2</em>
= <em>s</em>
Answer:
the last picture
Step-by-step explanation:
the one where the line hits the -3 mark on the y-axis
Answer:
Girls in Mr. Chang's class: 28 - 21 ; # girl students = # total students - # boy students ; 7 girl students.
Boys in Mr. Chang's class: 28 - 7 ; # boy students = # total students - girl students ; 21 boy students.