Answer:
x = -25/12 or x = -0.2
Step-by-step explanation:
x(x+5)+6(x+5)=(x+5)
Distribute
x^2 + 5x + 6x + 30 = x + 5
Combine
x^2 + 11x + 30 = x + 5
Subtract 1x from both sides
x^2 + 10x + 30 = 5
Subtract 30 from both sides
12x = -25
Divide 12 on both sides
x = -25/12 or -0.2
10. The numbers on the horizontal line would be:
1, 2, 3, 4, 5, 6
11. Count how many of each number there is.
1- 3
2- 4
3- 2
4- 3
5- 2
6- 2
So numbers 1 and 4 will both have 3 dots above them and numbers 3, 5, 6 will have 2 dots above them.
0.252x = 41
In Algebra, we must keep the equation balanced. What we do to one side, we must do to the other. We also need to isolate the variable x.
Since x is multiplied by 0.252, we must divide the left side by 0.252 to get rid of the 0.252. But, to keep the sides equal, we must do it to both sides.
0.252x/0.252 = 41/0.252
This leaves us with x = 162.69
Answer:
The hidden variable is age.
Step-by-step explanation:
That does not prove that larger shoes cause more studying math or vice versa.
The children with larger shoes are most probably older so they would have done more years of studying than the younger ones.
The hidden variable is the age of the child.