Answer:
<em>1710 trees up to 2016 (not including 2016)</em>
<em>2100 trees up to 2016 (including 2016)</em>
Step-by-step explanation:
Given that
Farm started with 30 trees in 2007.
Every year 40 more trees than the previous year.
It is actually an Arithmetic Progression (AP) with
First term, a = 30 and
Common Difference, d = 40
The AP will look like:
30, 70, 110, 150, ....
We have to find the sum of this AP upto 9 terms and 10 terms:
9 terms sum will give us the total number of trees up to 2016 (not including 2016).
10 terms sum will give us the total number of trees up to 2016 (including 2016).
Formula for sum of 'n' terms of an AP:
<em>1710 trees up to 2016 (not including 2016)</em>
<em>2100 trees up to 2016 (including 2016)</em>
For 34, since each diameter is in scientific notation , meaning that we have one number (1-9) followed by a decimal, we simply see which has the smallest power, which is cell C.
For 35, we multiply them out to get 0.83*10^2 (we subtract exponents when dividing). Since scientific notation is one integer from 1-9 followed by a decimal, we move 0.83 one place to the right and therefore remove one power from 10^2, getting 8.3*10
Use distributive property to solve.
2x(5x+3) + 7(5x+3)
1. distribute
2x•5x = 10x^2
2x•3= 6x
10x^2+6x
7•5x = 35x
7•3= 21
35x+21
2. combine like terms
10x^2+6x+35x+21
10x^+ 41x +21 [final answer]
Answer:
5 significant figures
Step-by-step explanation:
Any first number than starts with > 0, it is counted as significant figures and with 0 in the middle of number, also will be counted. But if the first number is 0, you have to skip to the next number.
e.g
0.0567 = 3s.f
1.542 = 4s.f
0.0000012 = 2s.f
1200586 = 7s.f
87000000002 = 11s.f
It would be 50,000 since the 5 in the other number is in the thousands place so just multiply that by 10 in place value.
