1) 6x-7y=-11
2) x=-2
3) y=-4x+1
4) y-5=3(x-1)
Answer:
The expression 9n + 1 represents the perimeter
sum of the sides of the triangle, equal to the perimeter:
x + 3n+2 + 2n-1 = 9n + 1
x + 5n + 1 = 9n + 1
x = 9n +1 - 5n -1
Answer: x= 4n
Answer:
0.9
Step-by-step explanation:
You can think of this as (63/7)/10
63/7=9
9/10=0.9
Should be 21 boys because 7+7+7 equal 21 and 3+3+3 equal 9 which equals 30