Dip

Popular questions and responses by Dip

2. algebra

Let a, b and c be real numbers such that a^2 + ab + b^2 = 9 b^2 + bc + c^2 = 52 c^2 + ca + a^2 = 49. Compute the value of (49b^2+39bc+9c^2)/a^2.

3. MATH8

locate 5 root 2 on number line

4. algebra

Call a positive integer N ≥ 2 “special” if for every k such that 2 ≤ k ≤ N, N can be expressed as a sum of k positive integers that are relatively prime to N (although not necessarily relatively prime to each other). How many special integers are

5. chemistry

calculate r.m.s velocity of he molecule at 300k.also calculate the total k.e(in calories)of the molecules in one litre he at 300k & 1atm?

Before electricity, nights in towns and fields were often times pitch black, except when there was a full moon. How many times brighter is the noonday sun than the full moon when the moon is at the closest point to the earth? Model the moon as a sphere of

7. math

Let S be the locus of all points (x, y) in the first quadrant such that (x/t)+(y/(1− t))= 1 for some t with 0

8. math

What is the largest possible product of a collection of positive real numbers which sums to exactly 27?

9. number theory

Let a and b be integers (not necessarily positive). Prove that (a^3 + 5b^3) not equal to 2016.

10. MMATH08

AREA OF SQUARE FLOOR IS 8000SQUARE METRE. IT IS PAVED WITH 10 SQUARE TILES OF EQUAL SIZE. WHAT SHOULD POSSIBLY BE THE LENGTH OF SIDE OF TILE THAT CAN BE USED TO COVER THE FLOOR.

1. Maths

b(k) means k th term b(k+1)=b(k)+3+k

posted on October 23, 2016
2. Statistics

A= event that odd will occur B= event that 1 is the outcome then p(B|A)=p(A and B)/p(A)=(1/3)/(3/6)=2/3[p(A and B)=1/3 since out of three odds 1,3,5 ,the 1 is the only one possible case]

posted on October 23, 2016
3. college algerbra

-3

posted on October 21, 2016
4. Composite functions math

replace x by g(x) in q(x), then q g(x)=(9-3x^2)/(6x^2-11) hence p q g(x)=(24x^2-51)/(6x^2-11)

posted on October 12, 2016

x=(5/3) & (-1/6)

posted on October 6, 2016
6. math

hundred place is 10 times as great as tenth place

posted on September 30, 2016
7. Math

-(2)^(1/2)

posted on September 30, 2016
8. math

if "k" is the breadth, then 9*k=(96*(0.75*0.75)) => k=6

posted on September 18, 2016
9. Math

(4*33-21-42-32)=37

posted on September 18, 2016