Answer:
Step-by-step explanation:
50 - 31 = 19
38%
For this case we must write a power between (340,345)
We chose 343.
We divide the number until we get an exact division:

So we have:

So, the power is:

ANswer:

Answer:
The answer is H 3
Step-by-step explanation:
(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0
Solve this quadratic for x:
x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5 (answer E)