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x/2+8=6 what’s does x equal?

What is a perfect triangle?

How many meters in a kilometer?

How to prove pythagorean theorem in geometry?

Find the measure of the smaller angle formed by the hands of a clock at 4:00?

Find the units’ digit in the product 2468x8642?

Find the sum of 3 roots of eqn x^3+4x^2+x6=0?
Best answer: x^3 + 4x^2 + x  6= 0
(x  1) (x + 2) (x + 3) = 0
The sum of 3 roots:
3  2 + 1 = 4 
How to show the sum_(n=1) ^ infinity 1/2^n =1 algebraically?
Best answer: S = [n = 1→∞]∑(1/2ⁿ) = 1/2 + 1/4 + 1/8 + ...
2S = 1 + 1/2 + 1/4 + 1/8 + ...
2S  S = (1 + 1/2 + 1/4 + 1/8 + ...)  (1/2 + 1/4 + 1/8 + ...)
S = 1 + (1/2  1/2) + (1/4  1/4) + (1/8  1/8) + ...
S = 1
so [n = 1→∞]∑(1/2ⁿ) = 1 
Help with simple differential equations y dy= x dx.?
I am told to find a solution of the differential equations y dy= x dx. What I did is integrate left and right hand side respectively end up with y^2=x^2+2c when its all cleaned up. The solution book says I should get is x^2y^2=C and I can see how I can get y^2x^2=C but not x^2y^2=C like book has. 
9,860 students in a population of 62,400 people. What percent of the total population is students?

Is college trigonometry in high school hard?
Best answer: If you don't know how to work a problem to solution, more like impossible.
Very very hard.
Learn the simple algorithms to work a problem, it is really quite simple.
Trig is hard, (read complicated)even for me, but grade 12 algebra in 7th grade was a breeze once learning how to work a problem. Same with trig. 
Is 30.58 larger or smaller than 33.9?
Best answer: 30.58 is negative (less than 0) and 33.9 is positive (greater than 0).
Negative numbers are always smaller than positive numbers.
Update:
Regarding 30.58 and 33.9, think of negative numbers as being in a hole. Will you be lower if you are in a hole that is 30.58 meters deep, or in a hole that is 33.9 meters deep?
Or are you more in debt if you own someone $30.58 or if you owe someone $33.90?
Update 2:
For the same reasons, 18.93 is *larger* than 23.69. It is "less negative". Again if you would be closer to the surface in a hole that was 18.93 meters vs. 23.69 meters deep.
Answer:
33.9 is smaller than 30.58 because it is "more negative".
33.9 < 30.58
18.93 > 23.69 
Is there a formula to find the surface area and the volume of a cone?

An equilateral triangle and a regular hexagon share a common side.The perimeter of the triangle is 20 cmWhat is the perimeter of the hexagon?

In trigonometry, why is theta used in periodic function equations instead of x?

How many hours do you study a day?

Adults to a game cost $5. Students cost $1. A total of $3,274 was collected for 1,294 tickets. How many of each type of ticket were sold?

90÷9(83x2)?
Please explain why you get your answer, as I used BODMAS/BIDMAS but get both 5 and 20, depending on how i treat the bracket. I just need to know the rule on why it would be 5 and not 20? if 5 is correct 
What percent of 40 is 5?
For example if someone had 40 dollars and gave me 5 dollars then what percent did they give me I should definitely know this but im tired and i cant think 
Stuck! Find Tan(AB) given sin and cos?
Best answer: Well, cos(B) is certainly not 64/17,
as a cosine is always between 1 and 1.
Sin(A) is indeed 12/13, but cos(B) is 8/17.
Sin(AB) = sin(A)cos(B)  cos(A)sin(B)
= (12/13)(8/17)  (5/13)(15/17)
= (96 + 75)/(13*17) = 21/(13*17).
Cos(AB) = cos(A)cos(B) + sin(A)sin(B)
= (5/13)(8/17) + (12/13)(15/17)
= (40 + 180)/(13*17) = 220/(13*17).
Tan(AB) = sin(AB)/cos(AB) = 21/220,
which is the first of the suggested choices.