Answer:
16P5
Step-by-step explanation:
16*15*14*13*12
39x + 24(50 - x) = 1,605
<span>13x + 8(50 - x) = 535 </span>
<span>13x + 400 - 8x = 535 </span>
<span>5x = 135 </span>
<span>x = 27 </span>
<span>Answer: 27 of 39-cent stamps were sold</span>
Answer:
<h2>
7</h2>
Step-by-step explanation:
Plugged it in the calc!
Hope it helps :)
Put simply, you have to work backwards in making the equations. Start with the product of 8/3 and 9.
*9 Next take 1/4 of that. This can be done in two ways, either multiplying by 1/4:
(
*9)*
, or dividing everything by 4.
(
*9)/4
Finally, subtract three.
The final equation would read:
((
*9)*
)-3Using PE(M/D)(A/S), we'd start with

*9
3 and 9 cancel out to be 1 and 3, leaving us with

, or 8, and 3 and this part of the equation reading 8*3, which is 24.
The next step is

, which is 6.
Lastly we subtract 3 from six, leaving us 3.
Answer:
Standard deviation 46.3
Step-by-step explanation:
A 28% of the distribution is equivalent to a z score of -0.5828, you can use a z table to find that.
Z score is calculated as follows:

x is the number being evaluated
μ is the mean
σ is the standard deviation
And it is used to calculate how many standard deviations you are from the mean of the sample.
Replacing with the known information you can calculate the standard deviation:
