All d subjects except Sanskrit nd IT
Angle α (in radians) subtended at the centre of a circle of radius R by an arc of length A is α = A/R radians = 180A/πR degrees Example: Arc = π/2 m Radius = 3 m Angle = (π/2)/3 radian =π/6 radian
chemistr - correction
The molality is then M mol /(1000 g/kg /( m -10 g)
chemistr
In scientific calculations, it is important to know how accurate you'd like your answers. If you see a number like 0.9864g/ml, it means 4 significant figures are expected, so you have to carry your calculations to at least 5 significant digits, and then round off to 4 for ...
math
To calculate the percentage, you would - divide part by total - multiply fraction by 100% - simplify For example, if you have 14 sums correct out of 20, then 14 is the "part", 20 is the "total", so - divide 14/20 = 7/10 - multiply by 100% : 7/10*100% - simp...
math (incomplete)
"mike runs for 5 of an hour " Please clarify 5 (what) of an hour, it could be 5%, 5 minutes, or one-fifth, ...
math
tom, chris, charls, TIM, lorra, lindy: please do not use different aliases. A[]B = A^B-(A+B) for 3[]4, substitute A=3, B=4, rewrite the equation as: 3[]4=3^4-(3+4)=81-7=74 You can do the same for 7[]9. If you wish, you can post your answer for checking.
ctu
Calculate the present value of the investments using the compound interest formula over the past 10 years, or n=120 periods (t) at interest rate of i=0.0384/12=0.0032 per period. The monthly payment P=$625 per period, and therefore PV = present value FV = (i.e. future value fr...
maths
Should read: y"=0+2sec(x)*(-1/cos²(x))(-sin(x)) =2sec²(x)tan(x)
maths
y=x+tan(x) y'=1+sec(x)^2 y"=0+2sec(x)*(-1/cos²(x))(-sin(x)) =sec²(x)tan(x) => cos²(x)y"-2y+2x =2cos²(x)sec²(x)tan(x)-2(x+tan(x)+2x =2tan(x)-2x-2tan(x)+2x =0
maths
There is no diagram posted, and not enough description to give a defined question. I am adding the following guesses. Check if they are correct. If they are not, post the complete description. AMB is a straight line such that AM=MB. Semicircles are drawn with AB,AM and MB as d...
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