Seems to be an arythmetic sequence
Sn=[n(a1+an)]/2
where
Sn means sum of all terms up the nth term
n=number of terms
a1=first term
an=nth term
so from 86 to the 22th term is from a1 to a22
find teh sequence
miknus 7 each time
an=a1+d(n-1)
an=87-7(n-1)
find 22n term
a22=87-7(22-1)
a22=87-7(21)
a22=87-147
a22=-60
S22=[22(87-60)]/2
S22=[22(27)]/2
S22=594/2
S22=297
the sum is 297
Step-by-step explanation:
area of square = 1
area of a circle in square =
bu estimate ![p^ = X/n = 760/1000 = 0.76Therefore, [tex]\frac{\pi }{4} \approx 0.76](https://tex.z-dn.net/?f=p%5E%20%3D%20X%2Fn%20%3D%20760%2F1000%20%3D%200.76%3C%2Fp%3E%3Cp%3ETherefore%2C%20%3C%2Fp%3E%3Cp%3E%0A%5Btex%5D%5Cfrac%7B%5Cpi%20%7D%7B4%7D%20%5Capprox%200.76)
b) if n tend to infinity
Answer:
2/21
Step-by-step explanation:
2/21 is the answer...........that is the fraction......
x+1/3=3/7
x=3/7-1/3
LCM=21
x=9/21-7/21
x=2/21
1. 3/4
2. im not sure if it means after taking away 3/4, but if it is, its 10/4
x=10/4 and -30/4 i believe, im not too good with fractions, sorry if its wrong :((
