At this rate, it should take 7,500 years to dissolve 15m thiccccc
Answer:
B
Step-by-step explanation:
Because the numbers are less than 45 and more than 40
The answer would be 60. This is because 480/8=60.
Answer:

Step-by-step explanation:

Subtract 2 from both sides:


Subtract 5x from both sides:


Divide both sides by 2:


(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)