how is the volume of a solution used in calculating concentration?
Answer:
7^3 = 343 is equivalent to 3 = log to base 7 343 so the base of the logarithm 7^3 is 7
Answer:
the second one, B
Step-by-step explanation:
This is because in both numbers the decimal was moved back one.
Solution by completing the square.
-5x^2+20x-17
=-5(x^2-4x)-17
=(-5(x-2)^2+20) -17
=-5(x-2)^2+3
So a=-5, d=-2, e=+3
a+d+e=-5-2+3=-4
y=145+12.5x
Step 1: Swap x and y
So, x=145+12.5y
Step 2: Solve for y
So, subtracting 145 from both sides
x-145=12.5y
Divide by 12.5 from both sides