Let the number be n.
Then 3n+5 = n+40
Combining like terms, we get
2n = 35, and so n = 35/7, or 17 1/2.
2/5(x - 4) = 2x
2/5x - 8/5 = 2x....multiply everything by 5
2x - 8 = 10x
-8 = 10x - 2x
-8 = 8x
-8/8 = x
-1 = x <===
Step-by-step explanation:
GIVEN: O is the mid point of AC & BD.
Therefore, AO = CO & BO = DO

Answer: Your answer is d because if you solve for x you will get 180 and if you plug 180 into the equation it equals 700.