Register
Login
Username
Password
Login
forgot your password?
Home
Forum
+0
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
Post New Question
All Questions
+0
234765 Questions
0
384
1
quadratic
The equation y = -16t^2 - 80t + 54 describes the height (in feet) of a ball thrown downward at 80 feet per second from a height of 54 feet from the ground, where t represents time, measured in seconds. In how many seconds will the ball hit the ground? Express
read more ..
●
Guest
Jul 11, 2021
0
366
1
help solve inequality
Find all real numbers s such that -2(s + 7) > 4s + 8. Please give your answer in interval notation.
●
Guest
Jul 11, 2021
0
354
1
help with inequality
Enter the letters of the points that satisfy the inequality y > -x + 2.
●
Guest
Jul 11, 2021
0
352
1
Analytic Geometry
Determine an expression for the area of triangle QCA in terms of p.
●
Guest
Jul 11, 2021
0
224
0
help algebra
The roots of y^2 - 5y - 11 = 0 are a and b. Find (a + 3)(b + 3).
Guest
Jul 11, 2021
0
382
2
base numbers
How many zeroes does 66^2 end in when written in base 12?
●
●
Guest
Jul 11, 2021
0
382
1
+129
Fractions
The cost of a table lamp was 2/3 the cost of a fan. A coordinator spent 3/5 of his money on 12 table lamps and 2 fans. He then used the rest of his money to buy another 4 fans and some table lamps.
(a) If he had spent all his money on the
read more ..
●
Soyoxxommm
Jul 11, 2021
+1
414
1
+26
Fractions
Alan, Ben and Carl shared some marbles. Alan had 1/3 of what Ben and Carl had. Ben had 1/5 of what Alan and Carl had. Alan had 24 fewer marbles than Carl. How many marbles did they have altogether?
●
Fritzizj
Jul 11, 2021
0
230
0
Algebra
Find the value of $6+\frac{1}{6+\frac{1}{6+\frac{1}{6+\frac{1}{6+\cdots}}}}$. Your answer should be in the form of a+b*sqrt(c) where no factor of c (other than 1) is a square. Find a+b+c
Guest
Jul 11, 2021
0
250
1
Domain
If h(x) is a function whose domain is [-8,8], and g(x)=h(x)/2, then the domain of g(x) is an interval of what width?
●
Guest
Jul 11, 2021
0
356
1
Domain
Let f(x)= 2*sqrt(x). What is the domain of f? Express your answer with interval notation.
●
Guest
Jul 11, 2021
0
236
0
Geomtery
Segments \overline{BD}BDstart overline, B, D, end overline and \overline{CE}CEstart overline, C, E, end overline are axes of the ellipse below.
Which of the following reflective symmetries apply to the ellipse below?
AABBCCDDEE
read more ..
Guest
Jul 11, 2021
0
453
3
Pythagorean Triples
The numbers 20, 99, and 101 form a Pythagorean triple. A right triangle has heights 20, 99, and x where x is the shortest height. What is x?
●
●
●
Guest
Jul 11, 2021
0
307
1
help geometry
In rectangle ABCD, shown here, CE is perpendicular to BD. If BC = 3 and DC = 3, what is CE?
●
Guest
Jul 11, 2021
0
376
1
help geometry
In isosceles right triangle ABC, shown here, AC=BC. Point X is on side BC such that CX=6 and XB=12, and Y is on side AB such that $\overline{XY}\perp\overline{AB}$. What is the length AX?
read more ..
●
Guest
Jul 11, 2021
Jul 10, 2021
0
339
1
qudaratic properties
What real value of t produces the smallest value of the quadratic t^2 + 9t - 36 - 7t + 45?
●
Guest
Jul 10, 2021
0
378
3
help algebra
The roots of 7x^2 + x - 5 = 0 are a and b. Compute 1/a + 1/b.
●
●
●
Guest
Jul 10, 2021
0
450
2
counting question
How many isosceles triangles with whole-number length sides have a perimeter of 28 units?
●
●
Guest
Jul 10, 2021
0
359
1
quadratic
There exist constants a, h, and k such that
3x^2 + 12x + 4 - 2x^2 + 11x - 7 = a(x - h)^2 + k
for all real numbers Enter the ordered triple (a,h,k).
●
Guest
Jul 10, 2021
0
458
8
+31
Please Help!
Hi! I'm stuck on this problem. I've found out the slope, which is -1/3, and the part I'm stuck on is the y intercept. I'm not sure if it's -2 1/2, or -3, or -2 3/4. Please help!! Thank you
Find a linear inequality with
read more ..
●
●
●
●
●
●
●
●
GLAZ3D
Jul 10, 2021
0
369
2
Floor function
Find the value of $x$ if $x$ is positive and $x\cdot\lfloor x\rfloor=700$. Express your answer as a decimal.
●
●
Guest
Jul 10, 2021
0
319
2
Piecewise Function Help This one is the real one
Consider the function where is some number.
What is the largest value of such that the graph of intersects every horizontal line at least once?
●
●
Guest
Jul 10, 2021
0
307
1
Piece-wise Function Help
Consider the functionwhere is some number.
What is the largest value of such that the graph of intersects every horizontal line at least once?
●
Guest
Jul 10, 2021
0
424
2
Number Theory
Recall that a perfect square is the square of some integer. How many perfect squares less than 1,000 can be represented as the difference of two consecutive perfect squares?
●
●
Guest
Jul 10, 2021
0
347
1
help with counting
How many numbers are there between 500 and 600 in which 9 occurs only once?
●
Guest
Jul 10, 2021
«
latest
9389
9388
..
7861
7860
7859
7858
7857
..
2
1
»
Post New Question
3 Online Users
Top Users
+118651
Melody
moderator
+37084
ElectricPavlov
+33653
Alan
moderator
+14985
asinus
moderator
+5265
rarinstraw1195
+3146
admin
administrator
+2973
TitaniumRome
+2651
LiIIiam0216
+2489
GingerAle
+1887
tomtom
+1826
NotThatSmart
Sticky Topics
Some guidelines for question askers.
What is Happening 5
Again a number puzzle. Multiply in writing.
Loads of fun printable number and logic puzzles
¤¤¤¤Welcome To Web2.0calc¤¤¤¤
How to display latex properly
Feature Questions 1 - Started 8th May 19
How to upload a picture.
If a question is ticked that does not mean you cannot continue it.
Should you consider anything before you answer a question?
Geometry Thread
PUZZLES
LaTex Coding
/calculator/bsh9ex1zxj
Historical post!
What is happening? Wrap #4
Great Questions to Learn From 2
Great Answers to Learn From
Reference Material
Information for new people.