Answer:
100
Step-by-step explanation:
We have the sum of first n terms of an AP,
Sn = n/2 [2a+(n−1)d]
Given,
36= 6/2 [2a+(6−1)d]
12=2a+5d ---------(1)
256= 16/2 [2a+(16−1)d]
32=2a+15d ---------(2)
Subtracting, (1) from (2)
32−12=2a+15d−(2a+5d)
20=10d ⟹d=2
Substituting for d in (1),
12=2a+5(2)=2(a+5)
6=a+5 ⟹a=1
∴ The sum of first 10 terms of an AP,
S10 = 10/2 [2(1)+(10−1)2]
S10 =5[2+18]
S10 =100
This is the sum of the first 10 terms.
Hope it will help.
If you are dividing numbers than here are some steps.
<span>Divide.
Multiply & subtract.
Drop down the next digit. h t o. ) 2 7 8.
Two goes into 2 one time, or 2 hundreds ÷ 2 = 1 hundred. h t o. ) 2 7 8. - ...Divide.Multiply & subtract.<span>Drop down the next digit. h t o. 1 3 9. ) 2 7 8. - 0 7. - 1 8.
Hope this helps! I used this to teach myself.</span></span>
Answer:
7
Step-by-step explanation:
6 decimeters is equal to 600 millimeters
