Answer: 1.018
Step-by-step explanation:
The pH level of a substance indicates the concentration of hydrogen ions (
) in a solution and is calculated by:
In this case the hydrogen ion concentration is 
, where
. Hence:
This means this new substance is acid
1 inch = 2.5 cm....so 4.4 inches = (4.4 * 2.5) = 11 cm
Answer: The first one is "translated 4 units down". The second one is "vertically stretched by a factor of 4".
Recall that y = f(x). When we say f(x)-4, we really mean y-4 so that means each y coordinate of all the points on the graph have been reduced by 4. Visually this shifts the graph down 4 units. A translation in geometry is the technical term for shifting.
When we say 4*f(x), we are multiplying each y coordinate by 4. A point like (1,2) turns into (1,8) for instance. If you apply this to every point on the graph, then the curve is stretched vertically to be 4 times taller than it usually is; which is an informal way of saying "vertically stretched by a factor of 4"
Answer:
32
Step-by-step explanation:
v/4 -3=5
+3 so the 3's cancel out
v/4=8
x4 x4
v=32
