Answer:
The mean score is 87
Step-by-step explanation:
79x2=158
158-71=87
Answer: X = 20
Step-by-step explanation:
7x - 99 = 2x + 1 --Take 2x from both sides
-2x -2x
5x - 99 = 1 -- add 99 to both
+99 +99
5x = 100 --Divide by 5
÷5 ÷5
x = 20
Answer: x=6
Step-by-step explanation:
Answer:
40 girls 20 boys i think / guess
Step-by-step explanation: