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
230964 Questions
0
212
2
pls help on this
A teacher uses 2/3 of her yearly supply of construction paper during the first quarter. She then uses 5/7 of what's left during the second quarter. During the third quarter, she uses 3/4 of what she has left (from the end of the second quarter). How
read more ..
●
●
Guest
Dec 20, 2021
0
232
1
Number Theory
Given that $13^{-1} \equiv 29 \pmod{47}$, find $39^{-1} \pmod{47}$, as a residue modulo 47. (Give a number between 0 and 46, inclusive.)
●
Guest
Dec 20, 2021
0
173
0
Quadratic
Find all values of such that
9 + 27/x + 8/x^2 = 7/x^2 - 13/x
If you find more than one value, then list your solutions, separated by commas.
Guest
Dec 20, 2021
0
188
0
Coordinates
A Unit circle has center at (5,0) and second circle with a radius 2 units has its center at (17,0). A common tangent to both circles intersects x-axis at Q(a,0) what is value of a
Guest
Dec 20, 2021
Dec 19, 2021
0
171
0
Coordinates
Let X, Y, and Z be points such that XZ/ZY = ZY/XY = 1/2. If Y = (1, 7), Z = (-1, -9), then what is the sum of the coordinates of X?
Guest
Dec 19, 2021
0
193
0
3d geometry
There are two pentagonal prisms that are similar. Prism A has a height of 8 meters and a volume of 800 m^3. Prism B has a height of $16$ m, find the volume of prism B.
Guest
Dec 19, 2021
0
299
1
Algebra
Find all values of x such that 2x/(x + 2) = -6/(x + 4) + 5. If you find more than one value, then list your solutions, separated by commas.
●
Guest
Dec 19, 2021
-8
1
959
3
+118608
HAPPY BIRTHDAY CHRIS!
read more ..
●
●
●
Melody
Dec 19, 2021
0
226
0
1. Convert into rectangular form
1. Convert into rectangular form
2. Convert into rectangular form
3.when -24+7i is converted to the exponential form what is ?
Guest
Dec 19, 2021
0
187
0
When 7-i is converted to the exponential form , what is r?
When 7-i is converted to the exponential form , what is r?
Guest
Dec 19, 2021
0
313
1
Graphing question
The equation y = (x + A)/(Bx + C), where A,B, and C are integers, is shown below. What is A + B + C?
●
Guest
Dec 19, 2021
0
321
1
Coordinates
Find the equation whose graph is shown below. Write your answer in standard form.
●
Guest
Dec 19, 2021
0
222
1
Exponential equation
Solve 3^(2x - 1) = 2^(1 - x)*36
●
Guest
Dec 19, 2021
0
213
1
Geometry
Triangle ABC is isosceles with angle B congruent to angle C. The measure of angle C is five times the measure of angle A. What is the number of degrees in the measure of angle B?
●
Guest
Dec 19, 2021
0
315
1
System
For a certain value of k, the system
3a + 4b = 7,
6a + 4b = k - 3a - 8b
read more ..
●
Guest
Dec 19, 2021
0
297
3
Percent
A 6-inch-by-10-inch rectangle is cut down to a 5-inch-by-9-inch rectangle. What is the percent of decrease in the area? Express your answer as a mixed number percent.
●
●
●
Guest
Dec 19, 2021
0
256
1
Math problem
There are seven numbers in this list: 0.123, 0.123, 0.112233, 0.13, 0.0123, 0.1223, 0.10203. Ashley rewrites the seven numbers in order from least to greatest, then circles the second and sixth numbers in this ordering. What is the sum of the two numbers
read more ..
●
Guest
Dec 19, 2021
0
322
3
Geometry
In the figure below, ABCD is a parallelogram, AD = 18 and DC = 27. Segments EG and FH are perpendicular to sides of the parallelogram as shown, and EG = 18. Determine FH.
read more ..
●
●
●
Guest
Dec 19, 2021
0
266
1
help percent
A salesman buys a coat at a $12.5 \%$ discount off of $\$64$. He then sells the coat at a gain of $30\%$ of his cost after allowing a $15\%$ discount on the marked price. What is the marked price, in dollars, of the coat?
●
Guest
Dec 19, 2021
0
340
2
+176
Help please. Thanks.
There are twice as many snakes as fish in a pet shop. 5 of the fish are sold. There are 9 fish left in the pet shop. How many snakes are there in the pet shop?
●
●
Whayousayy
Dec 19, 2021
0
347
3
+47
help with hw
Tim wants to create a circle graph showing the number of physicians whose specialty is aerospace medicine. He knows the following information.
53 male physicians are under 35 years of age.
8 female physicians are under 35 years of age.
155
read more ..
●
●
●
bruhlmao
Dec 19, 2021
0
314
3
HELP
Annie has a bag of sweets.
She eats the same amount of sweets from the bag each day.
At the end of the 6th day she has 5/8
of the bag of sweets remaining.
At the end of the 9th day she has
63 sweets remaining.
read more ..
●
●
●
Guest
Dec 19, 2021
0
308
1
+176
Help asap!
Bags A, B and C each contain some carrots.
There are a total of 863 carrots.
The ratio of the number of
carrots in bag B to the number of carrots in bag C is 4:3
1/3 of the carrots are removed
from bag A and bag C.
read more ..
●
Whayousayy
Dec 19, 2021
0
272
1
Trig problem
The minute hand of a clock is 4.5 inches long. What distance does the tip move in 45 minutes?
●
Guest
Dec 19, 2021
0
298
2
Word problem
Peter, Ned and Morris have some apples. Ned has 2 1/3 as many apples as Peter. Morris has half as many apples as Ned. In total they have 999 apples. How many does each person have?
●
●
Guest
Dec 19, 2021
«
latest
9237
9236
..
8130
8129
8128
8127
8126
..
2
1
»
Post New Question
4 Online Users
Top Users
+128625
CPhill
moderator
+118608
Melody
moderator
+33616
Alan
moderator
+14929
asinus
moderator
+9589
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1679
wiseowl
+1592
bader
+1145
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.