Answer:
100 possible extensions
Step-by-step explanation:
we can calculated how many possible extensions they have to try using the rule of multiplication as:
___1_____*___10_____*___10_____*____1____ = 100
1st digit 2nd digit 3rd digit 4th digit
You know that the 1st and 4th digits of the extension are 5. it means that you just have 1 option for these places. On the other hand, you don't remember nothing about the 2nd and 3rd digit, it means that there are 10 possibles digits (from 0 to 9) for each digit.
So, There are 100 possibles extensions in which the 5 is the first and last digit.
Answer:
x=9
Step-by-step explanation:
-4|x-3| = -16
-4+x-3 = -16
-7+x = -16 (add -4 and -3)
x = -16+7 (add -7 to -16)
x=9
It's not a lot of data but the heights have a positive skew, with the long tail in the positive direction, and the weights have a negative skew, with the long tail in the negative direction.
Answer: Last choice, The height and weight distribution exhibit a positive and a negative skew, respectively
6x3y5
—————
5
Step-by-step explanation:
3x + 2y = -26
4x - 5y = -4
To eliminate, we are going to cancel out the y
So multiply the first equation by 2.5, and you'll get
7.5x + 5y = -65
Add this equation to the second, and you'll get
11.5x = -69
Divide by 11.5 on both sides, and you get
x = -6
Now plug the -6 into the first equation, and you get
3(-6) + 2y = -26
Solve
-18 + 2y = -26
2y = -8
y = -4
