Questions Answered

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

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

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

DLS:
Limits
 updated one year ago
 35 replies
 1 Medal

kayboo15:
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:
1. Solve for x.
4(x – b) = x (1 point)
…
 updated one year ago
 3 replies
 2 Medals

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

Rdx:
limits question
 updated one year ago
 21 replies
 4 Medals

HammerG:
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 one year ago
 5 replies
 2 Medals

Trexy:
Whats wrong here
 updated one year ago
 12 replies
 1 Medal

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

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

bteezy_:
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 one year ago
 4 replies
 2 Medals

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

jkbo:
What is the missing term in the sequence below?
…
 updated one year ago
 4 replies
 2 Medals

cbrusoe:
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 one year ago
 16 replies
 2 Medals

vegas14:
f f(x) = x + 9, find the value of x if f(x) = 15.
 updated one year ago
 4 replies
 3 Medals

fredloser:
math help please
 updated one year ago
 5 replies
 5 Medals

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

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

TomLikesPhysics:
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 one year ago
 9 replies
 2 Medals

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

TomLikesPhysics:
I need help with a differential equation.
 updated one year ago
 6 replies
 1 Medal

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

TomLikesPhysics:
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 one year ago
 7 replies
 2 Medals

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