web
2.0
calc
Register
Login
Information
This feature requires your approval of cookies
You can approve cookies in the notification bar at the top of this window
Username
Password
Login
forgot your password?
Yes, I accept cookies
This website uses cookies to improve user experience. By accepting with the checkbox "Yes, I accept cookies" you consent to all cookies in accordance with our
Cookie Policy
Secure Login
Home
Forum
^{+0}
Widgets
Formulary
Maths
Help
Complex Numbers
Integral Calculus
Differential Calculus
Equations
Graphs
Linear Algebra
Number theory
Percent
Standard Functions
Statistics
Trigonometry
Unit Conversion
Units
About
Imprint
Privacy Policy
Terms of Service
Credits
Google+
Facebook
Contact Email
michaelcai
Username
michaelcai
Score
55
Stats
Questions
12
Answers
1
12 Questions
1 Answers
0
23
1
+55
Help me please
Let $\triangle ABC$ be an isosceles triangle such that $BC = 30$ and $AB = AC.$ We have that $I$ is the incenter of $\triangle ABC,$ and $IC = 18.$ What is the length of the inradius of the triangle?
●
michaelcai
Jul 27, 2017
0
23
1
+55
Help me please
Let $\triangle ABC$ be a triangle such that $AB = 13,$ $BC = 14,$ and $CA = 15.$ Meanwhile, $D$ is a point on $BC$ such that $AD$ bisects $\angle A.$ Find the area of $\triangle ADC.$
●
michaelcai
Jul 27, 2017
+1
24
1
+55
Graphing Quadratics Help
Points $A$ and $B$ are on parabola $y=3x^2-5x-3$, and the origin is the midpoint of $\overline{AB}$. Find the square of the length of $\overline{AB}$.
●
michaelcai
Jul 26, 2017
0
29
1
+55
Bisectors
In triangle $ABC$, . The incircle of triangle $ABC$ touches sides $BC$, $AC$, and $AB$ at $D$, $E$, and $F$, respectively. Find $\angle EDF$, in degrees.
Link to diagram:
read more ..
●
michaelcai
Jul 25, 2017
+1
29
2
+55
Graphing circles help
Two circles, one centered at $(-3,2)$ and the other centered at $(0,-1)$, are internally tangent as shown.
Link to diagram: https://latex.artofproblemsolving.com/7/d/8/7d8d7be23ae4f2eecfa363a19ed7b05d06f0c7be.png
read more ..
hectictar
●
●
michaelcai
Jul 24, 2017
0
21
1
+55
Algebra help
Let and be constants such that the quadratic has roots and . Find the vertex of the graph of the equation
please include thorough explanation
●
michaelcai
Jul 24, 2017
0
40
1
+55
The equation of the circle shown in the following diagram can be written as $x^2 + Ay^2 + Bx + Cy + D = 0$. Find $A+B+C+D$.
The equation of the circle shown in the following diagram can be written as $x^2 + Ay^2 + Bx + Cy + D = 0$. Find $A+B+C+D$.
Center of circle is (-1,1), point on circle is (1,2)
read more ..
●
michaelcai
Jul 21, 2017
0
25
1
+55
quadratic graph help
The graph of the quadratic $y = ax^2 + bx + c$ has the following properties: (1) The maximum value of $y = ax^2 + bx + c$ is 5, which occurs at $x = 3$. (2) The graph passes through the point $(0,-13)$. If the graph passes through the point $(4,m)$, then
read more ..
geno3141
●
michaelcai
Jul 21, 2017
0
59
6
+55
Pythagorean Theorem help
A rectangular sheet of paper measures 12 inches by 9 inches. One corner is folded onto the diagonally opposite corner and the paper is creased. What is the length in inches of the crease? Express your answer as a mixed number.
●
●
●
●
●
●
michaelcai
Jul 18, 2017
0
42
3
+55
Math quadratics
A square is drawn such that one of its sides coincides with the line $y = 5$, and so that the endpoints of this side lie on the parabola $y = x^2 + 3x + 2$. What is the area of the square?
hectictar
●
●
●
michaelcai
Jul 17, 2017
0
42
1
+55
Find the product of all positive integer values of c such that has two real roots.
Find the product of all positive integer values of c such that has two real roots.
Alan
●
michaelcai
Jul 17, 2017
+1
54
6
+55
Quadratic Equation Help
If the parabola and the line intersect at only one point, what is the value of b?
Alan
●
●
●
●
●
●
michaelcai
Jul 17, 2017
«
latest
0
-1
2
latest
»
#1
+55
+1
Nvm, i solved it. answer is (3,10)
michaelcai
Jul 24, 2017