Answer:
468
Step-by-step explanation:
Formula for infinite sum of geometric series is;
S_∞ = a1/(1 - r)
Where;
a1 is first term
r is common ratio
We are given;
a1 = 156
r = ⅔
Thus;
S_∞ = 156/(1 - ⅔)
S_∞ = 156/(⅓)
S_∞ = 468
Answer:
5 or 5/1
Step-by-step explanation:
15/3= 5.
15/3 = 5/1
I was a tad confused on what you were looking for, so I put 2 possible answers.
:)
You would need to know the radius. 3.14=π and the equation for area of a circle is A=πr^2
You want to isolate the x first.
Subtract 3/7 from both sides.
That will result in -2/3x = 1/2 - 3/7
(common denominator = 14)
-2/3x = 1/14
Find x by multiplying both sides by 3/-2
Find the answer yourself after :P
So if you let x and y be the two numbers...
the sum of the two means you add them together... so you get:
x+y=56 : the difference means you subtract them.. so
x-y = 16
now you have two equations and two unknowns... which you can solve with a variety of methods... you can use elimination, substitution, or trial and error.
x+y=56
x-y = 16
I will use the elimination method: Because there is a plus y and a negative you cancel that out and you add the 2x's. Therefore:
2x=72
x=36
Now, you can plug in 36 into one of your original equation:
36+y=56
y=20
Those are your two numbers!