Total # Posts: 23

Math
A. 24 B.

Science
Two balls of mass 10kgs and 100kgs are thrown vertically up at the same speed which ball will pass the point of projection in their downward direction with greater speed?

algebra
By using just 5 threes get me the answer 31

physics question
find the force exerted by proton and the electron in a hydrogen atom they are 5.0 X 10^-19 coulomb

physics coulombs
find the force exerted by proton and the electron in a hydrogen atom they are 5.0 X 10^-19 coulomb

physics coulombs law
a negative charge 5.0 X 10^-4 C exerts a repulstio force of 7.0 N .on second charge away 0.05 m away. what is the sign and magnitude of the second charge

mathematics
the base of isoceles triangle is 4/3 cm. the perimeter of the triangle is 4 2/15. what is the length either of the remaining equal size

math
LHS = (2sinxcosx-cosx)/(1-sinx-cos^2x+sin^2x) = (2sinxcosx-cosx)/(sin^2x+cos^2x-sinx-cos^2x+sin^2x) = (2sinxcosx-cosx)/(2sin^2x+cos^2x) = cosx(2sinx-1)/sinx(2sinx-1) = cosx/sinx = cotx =RHS

Mathematics
Half of a third of x equals a fourth of y plus a fifth of y. If x = 27, what is the value of y?

Math
divide the expression by 12 first and then use the formula..

Math
m=-3/4 m=-4/3 easier to figure out the roots using the quadratic formula. {-b+\-[sqrt(b2-4ac)]}/2a (I hope you are aware of it). Before going and manually solving the eqn, its better to check if b2-4ac is positive or not.(if -ve, equation has imaginary roots).

algebra
This is a second grade problem, actually.. Substitute for n 7*n 7*7565

math
2a^2+9a+4=0 2a^2+a+8a+4=0 a(2a+1)+4(2a+1)=0 (2a+1)(a+4)=0 a=-1/2 and a=-4

Math
Yes it is equal.. The price has been increased by 70.6% and decreased by the same %.

math
48 2*24 then 2*2*12 then 2*2*2*6 then 2*2*2*2*3

math
X+2=5 X=5-2 X=3

Math
area of outer circle A1=Pi*16^2= 803.84 area of inner circle A2=Pi*14^2= 615.44 area of outer ring=A1-A2=188.4 cm

MATH
335 employees use daycare 130 employees do not use daycare 2/7 of the employees do not send their kids to daycare

math
part/whole = part/whole 120/X = 5/100 X=2400 troop sold 2400 cookies

Answer 0.04= 4*10power-2 Example for writing in exponential form..hope you get the idea..... 4=4*10power0 40=4*10power1 400=4*10power2 .. ... 0.4=4*10power-1 0.04=4*10power-2 0.004=4*10power-3 ... .....

Math
c=2 d=3 e=6 i=9 p=0 s=1

Math
a=7 e=8 g=9 p=1

math
lets start with the equation 2n(n+4) - 28 = (n+2)^2 using formula (a+b)^2=a^2+2ab+b^2 2n^2+8n-28=n^2+4n+32 simplyfying, n2+4n=32 Solving for n, we get n=4 So the even consecutive numbers are 4,6,and 8..... checking... 2(4*8)-28=36

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