Answer:
1/3
Step-by-step explanation:
hope this helps :D
brainliest pls?
Answer:
x = 5
Step-by-step explanation:
Corresponding sides are proportional, so we can write the proportion ...
(x -2)/x = (x +1)/(x +5)
(x -2)(x +5) = x(x +1) . . . . . . . multiply by x(x+5)
x^2+3x -10 = x^2 +x . . . . . eliminate parentheses
2x = 10 . . . . . . . . . . . . . . subtract x^2+x-10
x = 5 . . . . . . . . . . . . . . divide by 2
To simplify the problem imagine the half-life was 2.5 minutes. This means that there would be 10/2.5=4 periods of halving the mass, which means 1/2⁴=1/16 of 18g=1.125g.
So for the given half-life we calculate 10/2.552=3.9185 approx. So we now find 2 to this power=15.1211 approx and divide into 18=1.19g. This is close to the rough estimate we did earlier.
Answer:
x>4 or x <-4
Step-by-step explanation:
-2|x| < -8
Divide each side by -2, remembering to flip the inequality
-2|x|/-2 > -8/-2
|x| >4
To get rid of the absolute values, we get 2 equations one positive and one negative
x>4 or x <-4
Answer:
It 13
Step-by-step explanation: