Take 3/7 and multiply it by 2 to find out how much she knits in one hour. Then take that value and multiply by 12 to find out how much she knits in 12 hours.
3/7 x 2 = 6/7
6/7 x 12 = 72/7 or 10 2/7.
<span>At the end of only 5 months, she has:
620</span><span>mount saved each month:
1st month: 20
2nd month: 2*20
3rd month: 4*20
4th month: 8*20
</span>
Csc means cosecant and it is the ratio of the hypotenuse / opposite.
With angle B, the hypotenuse = 10 and the opposite side = 6.
So, the cosecant of Angle B = 10 / 6 = 1.6666666...
To see all the trigonometric ratios, click here:
http://www.1728.org/trigcalc.htm
The answer is the second one! He followed the customs himself :)
Answer:
Step-by-step explanation:
we are given series as
S(infinity)=20-10+5-..
Firstly, we will check type of series
first term=20
second term=-10
third term =5
now, we can find common ratios
we can see that both ratios are equal
so, this is geometric series
we can use sum of infinite terms formula
where a is first term
a=20
r=-0.5
now, we can plug values