1.) 1+10a-5a
Subtract 5a from 10a
Final Answer: 1+5a
3.) x-9-3x
Subtract 3x from x
Final Answer: -9-2x
5.) 1-4n+2n-1
Subtract 1 from 1
-4n+2n
Add
Final Answer: -2n
7.) 10k-3k
Subtract
Final Answer: 7k
9.) 5r+4-4
Subtract
Final Answer: 5r

difference between standard deviation and mean deviation
Answer:
Standard deviation is basically used for the variability of data and frequently use to know the volatility of the stock. A mean is basically the average of a set of two or more numbers. Mean is basically the simple average of data
Hope this helps!!

2,8 is the Awnser if you can see it on the graph it goes 2 up 8 right
Both methods start out with a factor<span> tree. A </span>factor<span> tree is a diagram that is used to break down a number into its </span>factors until<span> all the numbers left are </span>prime. The first way you can use a factor<span> tree to find the </span>factorization of a number is to divide out prime<span> numbers only. Let's </span>factor<span> 24 using this method.</span>
<em> </em>I am positive that the answer is D. Let me know if i got it wrong so i can fix it