Answer:
Step-by-step explanation:
<h3>a)</h3>
8 adult tickets cost 8($9.50) = $76
21 kids tickets cost 21($3) = $63
The total cost of these tickets is $76 +63 = $139.
__
<h3>b)</h3>
aa adult tickets cost 9.50aa
kk kids tickets cost 3.00kk
The total cost of these tickets is 9.50aa +3.00kk.
_____
<em>Additional comment</em>
We ordinarily expect a variable to be a single letter. This problem statement defines each variable using a double letter, so that is what we have used. (Sometimes Brainly doubles up variable content in copied text, so we suspect that may have happened here.)
Answer:
D
Step-by-step explanation:
The volume of Model A is 48 cm³. The volume of Model B is 40 cm³. 48+40=88.
Answer:
x = -4
Step-by-step explanation:

Pretty sure this is asking for the perimeter, so just add together the length of all the sides, 30 + 30 + 18 ( 1 yard is 3 feet so just multiply that ) + 18, which equals 96 feet.
Hope this helps, if not, comment below please!!!