June 2016

Raymart Camino's picture

probabilty

among 10000 random digits, find the probabilty that the 3 appers at most 950 times.
please help, thank you.

Statics of Rigid Bodies: Components of a force about a line at an acute angle from the force.

Resolve a 100 KN force into components acting at 20 degree and 40 degree with the force.

Marie Joy 010899's picture

one sided limits

patulong namn po sa one sided limits

omrcsr's picture

Differential Equation: Eliminate $c_1$ and $c_2$ from $y = c_1 e^x + c_2 xe^x$

eliminate the arbitrary constant:

y=c1ex + c2xex

y'=c1ex + c2(xex + ex)
y''=c1ex + c2(xex + 2ex)

by comparing eq.1 and eq,2 = eq,4
by comparing eq.2 and eq.3 = eq.5

by comparing eq.4 and eq.5 = y'' + 2y - 3y'

am i doing it right??

Liquid Level of Horizontal Tank

Hello,
I want to calculate the liquid level of a horizontal cylindrical tank. Consider the equation :

V=L{(Pi)R^2-R^2ArcCos[(R-h)/R]+(R-h)Sqrt(2Rh-h^2)}

V=Tank volume
L= Tank length
R= Tank radius
h= Distance from top of tank to surface of liquid

What I want to do is to rearrange the above equation so that h is the subject. can this be done?

Raymart Camino's picture

GEOTECH. ENG'g (particle-size distribution curve)

in solving for UNIFORMITY COEFFICIENT (Cu = D60/D10)

what if D10 or 10% finer doesn't exis in the particle size distribution curve? How can i solve this? Help please, thank you.

GIVEN:

charlie_09's picture

Equation of circle tangent to two lines and passing through a point

Goodafternoon.,pasagot naman po ng tanong na ito,.

1. Find the equation of the circle tangent to the lines
5x + 12y - 161= 0 and 12x + 5y - 126 = 0 and passing through the point (-9,-11).

Thank you so much for your response. :-)

03 Maximum Revenue for Tour Bus of 80 Seats

Problem
A tour bus has 80 seats. Experience shows that when a tour costs P28,000, all seats on the bus will be sold. For each additional P1,000 charged, however, 2 fewer seats will be sold. Find the largest possible revenue.
A. P29,000
B. P28,500
C. P28,900
D. P28,700
 

04 - Two runners moving in the same direction in an oval track

Problem
Runners A and B start together in a race around a 900-ft oval track. Runner A is making a speed of 27 ft/sec and runner B at 22.5 ft/sec. How long will it take runner A to be exactly one circumference ahead of runner B.
 

05 - Two runners moving in opposite directions in a circular track

Problem
Benjie and Jerwin is running in opposite directions in a 400-meter circular track and meet each other every 35 seconds. If Benjie can complete one track in 65 seconds. How long does it take for Jerwin to run 400 meters?
 

Geometry-related Problems

Example
An isosceles triangle has an altitude equal to 12 inches and a perimeter equal to 36 inches. Find the length of the base and the length of the equal sides.
 

Jeanvill Paladan Milla's picture

differential equation

img_20160626_154819.jpg

Pasagot nga po ito pls..thanks

Physics: Temperature increase in the nail after 10 hammer blows

a nail driven into a board inc in temp. if we assume that 60% of the kinetic energy delivered by a 1,8 kg hammer w/ a speed of 7.5 m/s is transformed into heat that flows into the nail and does not flow out, what is the temp inc of an 8 g aluminum nail after it is struck ten times?

Two particles released from the same height and reached the base at the same time

Problem
Particles A and B are elevated 12 meters high from a given reference base. Particle A is projected down an incline of length 20 meters at the same time particle B is let to freely fall vertically. Find the velocity of projection of particle A if both particles strikes the base at the same time.
 

001-two-particles-released-thesame-point.gif

 

Yobe Teremocha Ouano's picture

math

Sir pahinge na man nag pdf file ng calculator techniques..gusto kong matuto non.

IrishJane Boticario's picture

Math: Components of F= 20i + 30j + 50k N parallel and perpendicular to plane ABC

Resolve the force F= 20i + 30j + 50k N into two components - one perppendicular to plane ABC and the other lying in plane ABC.

Sydney Sales's picture

interest and compound: amount of loan payment

jones corporation borrowed P 9000 from Brown Corporation on Jan. 1, 1978 and P12000 on Jan.1,1980.Jones Corporation made a partial payment of P 7000 on Jan. 1, 1981. it was agreed that was the balance of the loan woild be amortizes by two payments one of Jan. 1, 1982 and the other on Jan.1, 1983. The second being 50% larger than the first. If the interest rate is 12%. What is the amount of each payment.

Sydney Sales's picture

MIGRATED: interest and compound: A man wishes his son to receive P200,000 ten years from now

A man wishes his son to receive P200 000 ten years from now. What amount should he invest now if it will earn interest of 10% compounded annually during the first 5 years and 12% compounded quarterly during the next 5 years.