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
232919 Questions
0
378
1
A unique pair of integers a and b make the equation below true:12^a·18^b=6^(a+2)·27^b
A unique pair of integers a and b make the equation below true:12^a·18^b=6^(a+2)·27^b
●
Guest
Jan 29, 2021
0
591
0
Question on Chebychev's Inequality
(c) If we do not assume that the population is bell-shaped, at least what percentage of the population will be between 137 and 185?
At least ▼(Choose one) of the population values fall between 137 and 185.
read more ..
Guest
Jan 29, 2021
0
309
1
coordinates
If (-1,3)and (5, 1) are two endpoints of a diameter of a circle, what is the equation of the circle?
●
Guest
Jan 29, 2021
0
386
5
Something I've been wondering for some time now
If x2 = y2 then does x=y?
●
●
●
●
●
Guest
Jan 29, 2021
+1
447
2
+138
A lovely IB problem involving cos and 4 missing variables
So I have literally no idea how to even begin this problem and would greatly appreciate some help :)
Thanks in advance!
●
●
SpaceTsunaml
Jan 29, 2021
0
331
1
Evaluate the Sum
Evaluate the sum...
\[\frac{1}{3^1} + \frac{2}{3^2} + \frac{3}{3^3} + \cdots + \frac{k}{3^k} + \cdots \]
●
Guest
Jan 29, 2021
0
294
1
Help Please
What is the sum of all the odd integers between 300 and 500?
●
Guest
Jan 29, 2021
0
282
1
math problem
Given that all the circles have equal radius of 10 cm, what is the area of the shaded blue part?
●
Guest
Jan 29, 2021
0
364
1
homework help pls
The exterior angles of a k-sided polygon form an arithmetic sequence. The smallest and largest interior angles of the polygon are 136 and 176. What is k?
●
Guest
Jan 29, 2021
0
264
0
HELP PLEASE !
The odometer in Ms. Brown’s car does not work correctly. The odometer recorded 11.5 miles for her last trip to the beauty shop, but she knows the distance traveled is 15 miles. a) What is the absolute error?
Guest
Jan 29, 2021
0
329
1
parabola
Find the equation whose graph is a parabola with vertex (2,4), vertical axis of symmetry, and contains the point (1,-11). Express your answer in the form "ax^2+bx+c".
●
Guest
Jan 29, 2021
0
307
1
Floor Adding
How many different values can floor{x} + floor {2x} + floor {3x} + floor {4x} take for 0≤ x ≤ 1?
I'm super confused because I don't know how to add floor functions.
●
Guest
Jan 29, 2021
-1
273
0
help me
i need help with my homework.
Guest
Jan 29, 2021
0
266
0
help with quadratic
If a and b are the two roots of the quadratic equation $x^2-3x+3=0,$ what is the value of
\[\log_{2}(a+b^{-1})+\log_{2}(b+a^{-1})+\log_{2}ab?\]
Guest
Jan 29, 2021
0
546
1
+92
pls help thx
The eight people from four husband-and-wife couples are arranged in a row. Each wife is somewhere to the left of her husband. How many such arrangements are there?
●
AaronWang2004
Jan 29, 2021
0
490
1
+86
Help Please Kinda need it ASAP
How many counterclockwise rotations of less than 360∘ about the center of a regular octagon map the octagon to itself?
●
JoLink
Jan 29, 2021
0
487
1
Can someone please help with these problems?
1. A researcher observes and records the height of a weight moving up and down on the end of a spring. At the beginning of the observation the weight was at its highest point. From its resting position, it takes 8 seconds for the weight to
read more ..
●
Guest
Jan 29, 2021
0
377
1
Need help with a few math problems
1.
A sine function has the following key features:
Frequency = 18/π
Amplitude = 6
read more ..
●
Guest
Jan 29, 2021
0
518
1
Dylan went to the store to buy some coffee
Dylan went to the store to buy some coffee. The price per pound of the coffee is $5.75 per pound and he has a coupon for $3.25 off the final amount. With the coupon, how much would Dylan have to pay to buy 5 pounds of coffee? Also, write an expression for
read more ..
●
Guest
Jan 29, 2021
0
255
0
help pls
The rectangle ABCD is twice as wide as it is high. Parallel lines which are a distance of p apart cross the mid-point of the long sides of the rectangle at e and f as shown. All 3 regions (red, green, blue) are of equal area.
What is the area
read more ..
Guest
Jan 29, 2021
0
526
2
+614
permutationss
In how many ways can 5 women and 4 men enter a lifeboat if women are to enter first?
●
●
xxJenny1213xx
Jan 29, 2021
0
405
1
n 5 +14≤13
n 5 +14≤13
●
Guest
Jan 29, 2021
0
572
4
+126
find the point P(x,y)
Line y =-x +6 has a point P(x,y) such that P is equidistant from A(10,-10) and Origin. PA = PO. Find P.
I found that PA = sqrt((10-x)^2 + (10-y)^2) = sqrt (200 +x ^2+y^2 +2y-2x) and PO = sqrt(x^2 + y^2)
read more ..
●
●
●
●
geoNewbie21
Jan 29, 2021
0
438
2
can anyone help?
In triangle $\triangle ABC$, $AB = 37, AC = 33$, and $BC = 39$. A circle $\Gamma$ is drawn with center $A$ and radius $AC$. Let $D$ be the point on $\Gamma$ that is furthest from $B$. What is the distance $BD$?
●
●
Guest
Jan 29, 2021
«
latest
9315
9314
..
7316
7315
7314
7313
7312
..
2
1
»
Post New Question
4 Online Users
Top Users
+129645
CPhill
moderator
+118630
Melody
moderator
+33616
Alan
moderator
+14966
asinus
moderator
+12530
Omi67
moderator
+3144
admin
administrator
+2487
GingerAle
+1857
LiIIiam0216
+1847
tomtom
+1664
bader
+1367
parmen
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.