Questions Answered

TomLikesPhysics:
Group Title
I need some help with an Integral (Substitution).
 updated one year ago
 7 replies
 1 Medal

TomLikesPhysics:
Group Title
lim_{x rightarrow infty} (3x+sqrt{9x^2+4x5})
The answer is apparently 2/3. But I can´t loose the squareroot term at any place so I always…
 updated one year ago
 12 replies
 1 Medal

TomLikesPhysics:
Group Title
I can only find derivative for x>0 , but I don't know why (according to wolfram).
 updated one year ago
 26 replies
 2 Medals

dan18:
Group Title
what is C so that y=2x+3 is tangent to the curve y+x^2 +C?
 updated one year ago
 9 replies
 3 Medals

50Cent:
Group Title
What is the square root of 50 times the square root of 45?
 updated one year ago
 5 replies
 No Medals Yet

penelope2:
Group Title
4(2d3)=12 help plz!
 updated one year ago
 3 replies
 1 Medal

DLS:
Group Title
Limits
 updated one year ago
 35 replies
 1 Medal

kayboo15:
Group Title
The mass number of an atom is obtained by totaling the number of _____ and _____. (1 point)
electrons and protonselectrons
neutronsprotons…
 updated one year ago
 2 replies
 1 Medal

POLOBOY:
Group Title
1. Solve for x.
4(x – b) = x (1 point)
…
 updated one year ago
 3 replies
 2 Medals

POLOBOY:
Group Title
Find the width of a rectangle with a perimeter of 90 and a length of 15. (1 point)A90
B15
C45
…
 updated one year ago
 3 replies
 2 Medals

yoyogators:
Group Title
negative the square root of nine equals
negative nine
…
 updated one year ago
 15 replies
 1 Medal

Rdx:
Group Title
limits question
 updated 2 years ago
 21 replies
 4 Medals

HammerG:
Group Title
Suppose you have 30 CDs. You know that you have 11
more CDs than your friend. Write and solve an
equation to find the number of CDs your…
 updated 2 years ago
 5 replies
 2 Medals

Trexy:
Group Title
Whats wrong here
 updated 2 years ago
 12 replies
 1 Medal

joemost:
Group Title
The graph of which equation has a vertex of (1, 3)
Choose one answer.
…
 updated 2 years ago
 3 replies
 No Medals Yet

drpick:
Group Title
In the parallelogram below find the value of a, b and c.
…
 updated 2 years ago
 2 replies
 2 Medals

bteezy_:
Group Title
Which equation has the shape of the function f(x) = x^2 but moved to the left 2 units.
a) f(X) = (x + 2)^2
…
 updated 2 years ago
 4 replies
 2 Medals

Michael797:
Group Title
Which equation represents the line passing through the points (1, 4) and (−2, 13)?
3x + y = 7
…
 updated 2 years ago
 6 replies
 3 Medals

jkbo:
Group Title
What is the missing term in the sequence below?
…
 updated 2 years ago
 4 replies
 2 Medals

cbrusoe:
Group Title
Tiara bought a cylindrical shaped cake with a base area of 64 square inches. The image below is a top view of the cake. The shaded portion r…
 updated 2 years ago
 16 replies
 2 Medals

vegas14:
Group Title
f f(x) = x + 9, find the value of x if f(x) = 15.
 updated 2 years ago
 4 replies
 3 Medals

fredloser:
Group Title
math help please
 updated 2 years ago
 5 replies
 5 Medals

open_study1:
Group Title
if the equation 2x^3 +kx  4 =0 and 6x^4 + 3kx^2 + 2 =0 have a common root k equals ?
 updated 2 years ago
 13 replies
 6 Medals

lhara21:
Group Title
What is the value of y given that logx 1 = y(x>0) ?
 updated 2 years ago
 4 replies
 No Medals Yet

TomLikesPhysics:
Group Title
I hear all the time that the universe is expanding. Those that mean that my meterstick becomes a little bit longer each day (or second)?
 updated 2 years ago
 9 replies
 2 Medals

j.giudice13:
Group Title
What is the solution to the equation 2^(1 + 2x )= 3 ?
 updated 2 years ago
 16 replies
 4 Medals

TomLikesPhysics:
Group Title
I need help with a differential equation.
 updated 2 years ago
 6 replies
 1 Medal

thomas5267:
Group Title
Energy levels for an electron in a hydrogen atom are:
A. Evenly spaced
B. Farther apart near the nucleus
…
 updated 2 years ago
 4 replies
 3 Medals

TomLikesPhysics:
Group Title
I want to integrate 2sinx/[cosx]^3.
I wrote that as tanx/[cosx]^2 and saw that I now have to integrate f/f`. But somehow this does not help…
 updated 2 years ago
 7 replies
 2 Medals

yahooo,suire:
Group Title
The area of a rectangle is 20 cm² after its dimensions were doubled. What is the area of the original parallelogram?
…
 updated 2 years ago
 15 replies
 1 Medal
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