Answer:
71/2 inches
Step-by-step explanation:
Answer is 71/2 inches because 40×7 equal 21
Answer:
The perimeter of triangular sign is 12x+3
Step-by-step explanation:
Length of side1 of triangle = x inches
Length of side2 of triangle = 4x-5 inches
Length of side3 of triangle = 7x+8 inches
We need to find perimeter of triangular sign.
The formula used is:
Now, finding perimeter of triangular sign:
The perimeter of triangular sign is 12x+3
Each grade made 60 dollars more than the previous class. In total, all of the grades made 840. The mean (average) is 210. The eight graders goal was 75 dollars more than the teachers' goal. The teachers were closer to the average of goals.