X = number of people went to movies
equation
6.25x + 12 = 30.75
6.25x = 30.75 - 12
6.25x = 18.75
x = 18.75 / 6.25
x = 3
answer
3 people
It would make a lot more sense if the choices were 's' instead of '8'. With that being said, the answer should have a value that is greater than -10. That would be a positive number, or a negative number from -1 to -9. <em>So, the acceptable answers would be A and B.</em>
Answer:
=-21x
Step-by-step explanation:
-12-4 =-16
-16-5=-21
Answer: The altitude is 90.
Step-by-step explanation: the formula to calculate a trapezoid: A = (.5)(B+b)h.
plug the values in.
8100 = (.5)(180)h
8100 = 90h
h = 8100/90
h = 90