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Post New Question
All Questions
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230891 Questions
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411
2
geometry
Compute angle x, in degrees.
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Guest
Jun 16, 2021
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567
5
PLEASE HELP!!
Let $n$ be a positive integer greater than or equal to $3$. Let $a,b$ be integers such that $ab$ is invertible modulo $n$ and $(ab)^{-1} \equiv 2$ (mod $n$). Given $a+b$ is invertible, what is the remainder when $(a+b)^{-1}(a^{-1}+b^{-1})$ is divided by
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Guest
Jun 16, 2021
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428
2
geometry
Compute angle x, in degrees.
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Guest
Jun 16, 2021
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394
3
+52
I'm not sure why
One of my problems got two replies, so I went to check it out
It said this:
"Oops, page is not available
You may have mis-typed the URL. Please check your spelling."
read more ..
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ThanksForAllHelp
Jun 16, 2021
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483
3
+52
Could someone please help? This question hasn't been answer yet
https://web2.0calc.com/questions/please-help_97551
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ThanksForAllHelp
Jun 16, 2021
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342
1
HEELP! NEEDED!
Pranav bought exactly 220 pounds of candy in small boxes that hold exactly 7 pounds of candy and large boxes that hold exactly 32 pounds of candy. How many small boxes did Pranav buy?
I need halp! ASAP!
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Guest
Jun 16, 2021
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326
1
help geometry
A triangle has side lengths of 10, 24, and 26. Let a be the area of the circumcircle, and let b be the area of the triangle. Compute a - b in terms of pi.
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Guest
Jun 16, 2021
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443
4
Ugh! This one is so hardddd
Shortly after 10 'o clock, the hands of a clock made a 90 degree angle. What's the time?
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Guest
Jun 16, 2021
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246
1
Need Help Urgently
Let $n$ be a positive integer greater than or equal to $3$. Let $a,b$ be integers such that $ab$ is invertible modulo $n$ and $(ab)^{-1} \equiv 2$ (mod $n$). Given $a+b$ is invertible, what is the remainder when $(a+b)^{-1}(a^{-1}+b^{-1})$ is
read more ..
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Guest
Jun 16, 2021
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269
0
Identify the like terms of -3a3b2 + 2b − 4a3b2 + 2a2b3.
Identify the like terms of -3a3b2 + 2b − 4a3b2 + 2a2b3.
a3b2 and a3b2
-3a3b2 and -4a3b2
-a3b2 and -4a3b2
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Guest
Jun 16, 2021
0
271
1
Function
For some constants a and b let
f(x) = 8 - x if x <= 4
f(x) = ax + b if x > 4
The function f has the property that f(f(x)) = x for all x. What is a + b?
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Guest
Jun 16, 2021
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511
3
Probability
Two real numbers are chosen at random between 0 and 2. What is the probability that the sum of their squares is no more than 1? Express your answer as a common fraction in terms of pi.
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Guest
Jun 16, 2021
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204
0
Solve the equation: -22.46 + 3.2g = -1.9g + 52 .
Solve the equation: -22.46 + 3.2g = -1.9g + 52 .
g=-11.6
g=-16.4
g=1.46
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Guest
Jun 16, 2021
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405
1
Need help with short explanation quick :(
As $n$ ranges over the positive integers, what is the sum of all possible values of the greatest common divisor of $3n+4$ and $n$?
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Guest
Jun 16, 2021
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375
1
Clocks are driving me crazy
How many degrees does the hour hand of a clock travel between 12:06 am, and 5:02 am the next day.
(Let's goo!! Cphil is composing!!)
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Guest
Jun 16, 2021
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331
1
Floor function
What is the range of the function $f(x) = \lfloor 2x \rfloor - x$?
Express your answer in interval notation.
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Guest
Jun 16, 2021
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345
1
polynomial question
Find the number of terms when the expression (1 + x)^10*(1 - x)^10 is expanded completely.
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Guest
Jun 16, 2021
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354
1
geometry
What is the measure (in degrees) of the smallest interior angle of a triangle in which the exterior angle measures have the ratio 2:3:3?
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Guest
Jun 16, 2021
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434
1
+30
help
Identify all asymptotes of the graph of
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natilie45632
Jun 16, 2021
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316
1
ANY MOD PLEASE HELP!!
As $n$ ranges over the positive integers, what is the sum of all possible values of the greatest common divisor of $3n+4$ and $n$?
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Guest
Jun 16, 2021
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334
1
help counting
How many diagonals are there in a decagon (10-sided polygon)?
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Guest
Jun 16, 2021
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339
2
halp
If you stack 3 pieces of bread would it be a stack of bread or a bread sandwhich?
tenthgradegod
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Guest
Jun 16, 2021
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331
1
Help probability
Fran randomly chooses a positive integers n, 1 <= n <= 100. Find the probability that n/16 is reducible.
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Guest
Jun 16, 2021
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328
2
geometry
AD and BE are altitudes of triangle ABC. If AC = 10, BC = 18, and AD = 5, then find BE.
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Guest
Jun 16, 2021
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