Answer:
y = lnx / ln 7.
Step-by-step explanation:
x = 7^y
Take logarithms of both sides:
ln x = ln 7^y
ln x = y ln 7 ( because ln a^b = b ln a. One of the Laws of Logarithms).
y = lnx / ln 7.
Answer:
I don't understand too...
Answer:
y=-1/2x+3/2
Step-by-step explanation:
The 3 angles need to equal 180
The middle angle is given as 100.
180 -100 = 80
There is an x on each side so you have 2x
2x = 80
X = 80/2
X = 40 degrees
Answer:
Plan A last 0.75 hours or 45 minutes.
Plan B last 1.5 hours or 90 minutes.
Step-by-step explanation:
Let 
be the number of hours that the plan A last, an 
the number of hours of plan B. Then for the Wednesday you have:
And for the Thursday is:
Multiply the equation of Wednesday by -3:
Using the method of addition using this last equation and the equation of Thursday
Replacing the value of in one of the equations
