Answer:
I think that would be 1
Step-by-step explanation:
Do everything in the lines before anything else. -2 becomes a 2 and then you add that with the 12 and divide 12 on both sides to get one.
Answer:
5 degrees colder
Step-by-step explanation:
You take the starting point then subract the ending point and you get your answer. But in order to know if its colder or warmer is to know that the higher the number, the hotter, and the lower the number, the colder.
Answer:
If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

And the mean for this case would be:

And the standard deviation would be given by:

Step-by-step explanation:
If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

And the mean for this case would be:

And the standard deviation would be given by:

Answer:
-20x³ + 0x² + 15x - 20
Step-by-step explanation:
I would have said it the other way.
"Multiply each term in the top row by -5."
4x³ + 0x - 3x + 4
<u>×(-5</u>) <u>×(-5</u>) <u>×(-5)</u> <u>×(-5)
</u>
-20x³ + 0x² + 15x -20