(3/6)^-1 negative exponent flips the fraction
(6/3)
2
47268.569 ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
According to the empirical rule, roughly 68% of the scores fall between z = -1 and z = 1
You can use a calculator to get a more approximate answer. If you have a TI calculator, you can use the "normalcdf" function to type in normalcdf(-1,1)
Answer:
-7
Step-by-step explanation:
2x+3=x-4
Let's start by subtracting 3 from both sides
2x=x-7
Now, subtract x from both sides
x=-7
Let's plug it in to make sure!
2(-7) +3= (-7)-4
-11=-11
840 is the answer
i hope i helped!