Answer:
6.4
Step-by-step explanation:
A(3, 9)
B(8, 5)

Answer:
girls = 125
boys = 87
Step-by-step explanation:
Total number of students in the 8th grade class = 212
Let g represent girls and b represent boys
Number of girls, g = 2b -49
Note that boys and girls in the class give a total of 212
So,
g + b = 212 ....eq 1
Slot in the value of g in the equation
2b - 49 + b = 212
2b + b - 49 = 212
3b - 49 = 212
Add 49 to both sides
3b - 49 + 49 = 212 + 49
3b = 261
Divide both sides by the coefficient of b which is 3
b = 87
Now that we've found the number of boys, let's find that of girls
We will slot in the value of b in eq 1
g + 87 = 212
Subtract 87 from both sides
g + 87 - 87 = 212 - 87
g = 125
So the number of boys is 87 and the number of girls is 125
7/12 divided by 2/5 is 35/24
Answer: E is located at (-2, 6)
Explanation:
The rule for reflecting over y = x is 
The x and y coordinates swap places.
Point E' is located at (6, -2) so that means point E must be located at (-2, 6)
The answer is 55 +1 or 43 + 13