xe^-x+7e^-x=0
Answer:
x=-7
Step-by-step explanation:
xe^-x+7e^-x=0
factor out the e^-x
e^-x(x+7)=0
e^-x=0, x+7=0
-x=ln(0), x=0-7=-7,
since ln(0) is undefined,
the only solution is -7.
−7.8(x+6.5)=−25.74
Enter your answer, as a decimal, in the box.
Greetings!
You can solve this with a simple equation:
Take the letter x to be the unknown number:
20 = 8+ (X + 5)
Then you can move the 8 + to the opposite side making it a negative 8:
20-8 = X + 5
12 = X + 5
Move the +5 over to the other side, making it a negative 5:
12 - 5 = x
7 = x
So the value of x is 7.
Hope this helps!
Answer:
Step-by-step explanation:
For a uniform distribution we have to:
for x∈ (a, b)
for
for
In this case we have to:
a = 25 min and b = 105 min
We want to find:
Then
In this case:
Therefore: