Step-by-step explanation:
6r + 7 = 13 + 7r
6r - 7r = 13 - 7
-1r = 6
r = 6/-1
r = -6
Answer: correct
Step-by-step explanation: The solution is x = –1 because .
The solution is x = 1 because .
The solution is x = 0 because .
There are no real number solutions to this equation.
Answer:
The volume of the cone is one third to the volume of the cylinder.
Step-by-step explanation:
It is because the formula of volume of cone is 1/3 to the volume of cylinder .
Volme of cone :

Volume of cylinder :

1. True, because you divide 10 and 28 by 2 to get 5/14
2. True because 6 is half of 12, so therefore it's equivalent to 1/2
3. And Yup, it's true, because you divide 2 and 14 by 2 to get 1/7.
I hope I helped :-)
First, you add up the lengths, 25 + 35 + 45 = 100
then, you divide by the number of objects (in this case, three)
100÷3= about 33.33
so, 33.33 is the average length of the aircraft