# HELP ME...uRGENT!

Most popular questions and responses by HELP ME...uRGENT!-
## GEOOOOMETRY!!!!!....Angled Perimeter

ABCD is a quadrilateral with ∠ADC=∠ACD, ∠ACB=∠ABC and CD=7. If triangles ADC and ABC have perimeter 51 and 59, respectively, what is the value of BC?

*asked on April 19, 2013* -
## geometry...TRIANGLE

ABCD is a quadrilateral with ∠ADC=∠ACD, ∠ACB=∠ABC and CD=7. If triangles ADC and ABC have perimeter 51 and 59, respectively, what is the value of BC?

*asked on April 18, 2013* -
## probability!!!!!!!!!!

41 different balls are drawn from a bag containing balls labelled 1,2,…,300. The probability that the number of balls drawn that are labelled with an odd number is larger than the number of balls drawn that are labelled with an even number can be

*asked on April 18, 2013* -
## physics...

A kayaker paddles due north at 2 m/s. The river the kayaker is paddling in flows towards the east at 1 m/s. After 5 seconds of paddling, how far is the kayaker from where she started in m?

*asked on April 2, 2013* -
## ALGEBRA.....URGENT

Find the number of solutions to the equation 1/a+1/b+1/c+1/d=1 where a, b, c, d are positive integers and a≤ b≤ c≤ d.

*asked on April 18, 2013* -
## Sigma over Phi

Let σ(n) be the sum of the positive divisors of an integer n and ϕ(n) be the number of positive integers smaller than n that are coprime to n. If p is a prime number, what is the maximum value σ(p)/ϕ(p)?

*asked on April 19, 2013* -
## simple PHYSICS

The space shuttle had a top orbital speed of 8000 m/s and orbited in a circular orbit approximately 320 km above the earth's surface. How long was one orbit in seconds?

*asked on April 18, 2013* -
## GEOMETRY......circle

Circles Γ1 and Γ2 intersect at 2 distinct points A and B. A line l through A intersects Γ1 and Γ2 at points C and D, respectively. Point E is the intersection of the tangent to Γ1 at C and the tangent to Γ2 at D. If ∠CBD=30∘, what is the measure

*asked on April 18, 2013* -
## algeBRA

How many integer values x satisfy the inequality 2

*asked on April 18, 2013* -
## ALGEBRA.

The product of 2 positive integers is 1000. What is the smallest possible sum of these 2 integers?

*asked on April 18, 2013* -
## triple digit digit product

What is the smallest 3-digit positive number whose product of the individual digits is still a 3-digit number

*asked on April 10, 2013* -
## Inequality Sum

x,y and z are positive integers such that x

*asked on April 19, 2013* -
## SIMPLE physics!!!!!!

A neutral solid conducting cylinder rotates about its axis with angular speed 1600 rad/s. In addition, there is an external magnetic field of induction B directed along the cylinder's axis. What must the magnitude of the magnetic field in Teslas so that no

*asked on April 18, 2013* -
## FACTORIAL PRODUCT(ALGEBRA)

Let N=1!⋅2!⋅3!⋅4!…9!⋅10!. Let 2^k be the largest power of 2 that divides N. What is the value of k?

*asked on April 10, 2013* -
## RATIO!!!!

a,b,c are positive integers such that a:b=7:9 and b:c=12:7. What is the smallest possible value of a?

*asked on April 10, 2013* -
## physics

You and your friend, both of mass 70 kg, are playing catch with a frisbee on frictionless ice. Initially, you are both at rest. You throw a 0.175 kg frisbee at 10 m/s horizontally at your friend, who catches it. After they catch the frisbee, what is the

*asked on April 2, 2013*