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Post New Question
All Questions
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230628 Questions
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403
1
please help?
Suppose in a certain triangle, the degree measures of the interior angles are in the ratio 2:3:4 If the largest angle measures x^,what is the value of x
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Guest
Feb 23, 2020
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670
3
help
When 125 is added to a number, it becomes a perfect square. When 176 is added to that same number, it also becomes a perfect square. What is the number?
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Guest
Feb 23, 2020
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578
3
1. Consider the polynomial Calculate .
1. Consider the polynomial Calculate .
2. Consider the polynomial Calculate .
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Guest
Feb 23, 2020
-1
387
0
1. Let z and w be complex numbers satisfying |z| = 4 and |w| = 2. Find the numbers , if any of these cannot be uniquely determined from
Deleted.
1 post = 1 question.
Guest
Feb 23, 2020
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398
1
help
A cube 3" on each edge, is painted entirely red. It is then cut apart into 1" cubes. How many of these will have paint on exactly two faces
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Guest
Feb 23, 2020
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395
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*FUNCTION HELP!!!*
Let us say that a function is if it has a certain property we’ve discovered that’s hard to prove directly. However, after much work we have proved two important facts about functions.
1. If is then so is .
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Guest
Feb 23, 2020
0
422
2
Can someone help?
A line passes through the points (-3,-5) and (6,1). This line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.
(2, -8, and -4 are wrong...)
read more ..
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Guest
Feb 23, 2020
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501
1
help
Mr B has $20000 to invest. He invests part at 6% and the rest at 7%. He earns $1280 interest. How much did he invest at each of the rates?
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Guest
Feb 23, 2020
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445
0
Help! (Constructive Counting)
Given 2018 points in space, create a network of segments as follows. At each step, draw a segment joining two "available" points and subdivide it into two smaller segments by plotting a new point in the middle. (We say that a point is available if it is
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Guest
Feb 23, 2020
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500
2
Counting Question help plsss
A number is called "descending" if each digit is less than the digit to its left. For example, the number 432 is descending, but 443 and 345 are not.
How many six-digit descending numbers are there?
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Guest
Feb 23, 2020
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324
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Subsets Help
How many subsets of the set {1, 2, 3 ... 11} have median 6?
Guest
Feb 23, 2020
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372
0
Counting Help!
A number is called swappy if it is not a palindrome, but swapping two of its digits produces a six-digit palindrome. For example, the number 813381 is swappy, because we can swap the last two digits to get 813318, which is a palindrome.
How
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Guest
Feb 23, 2020
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294
0
please help
A jar contains 13 marbles: 5 green and 8 black. If three marbles are picked at random one by one, what is the probability that
a First is green?
b all three is green?
c they are the same color?
Guest
Feb 23, 2020
-1
644
0
+312
PROBABILITY OVERLOAD
Forget it.
Post one question at a time and at least attempt your own homework! Melody.
AND
When posting a question tell us what you have tried for yourself.
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mathleteig
Feb 23, 2020
0
621
6
help
If integer C is randomly selected from 20 to 99, inclusive, what is the probability that C^3-C is divisible by 12?
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Guest
Feb 23, 2020
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660
1
PLS PLS HELP!
Let A and B be constants such that the graphs of the lines x + 5y = 7 and 15x + Ay = B are perpendicular and intersect at (-8,3). Enter the ordered pair (A,B).
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Guest
Feb 23, 2020
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585
1
Need Some Help with a Geometry Question
H is the orthocenter of acute triangle ABC and the extensions of AH, BH, and CH intersect the circumcircle of triangle ABC at $A', B' and C'.$ We know angle AHB:angle BHC:angle CHA=9:10:11. Find angle A'B'C' in degrees.
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Guest
Feb 23, 2020
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642
1
fog horn
A fog horn sounds a blast for 2 seconds and then is silent for 8 seconds.
How many blasts are made in a 3 1/2 hour period?
Josh1222
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Guest
Feb 23, 2020
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546
2
Help, please!
I'm having a lot of trouble with this problem. I usually don't do this, but I'm sick; any help appreciated!
In a certain rectangular prism, the total length of all the edges is 40, and the total surface area is 48. Find
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Guest
Feb 23, 2020
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664
1
+218
A Geometry Question
ABCD is a cyclic quadrilateral. Angle A, Angle B and Angle C form an arithmetic sequence in this order. What is Angle D in degrees?
I was pretty stuck on this question. Thanks!
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Rudram592
Feb 23, 2020
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307
0
I need help with this hard problem!
A line passes through the points (-3,-5) and (6,1). This line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.
(2, -8, and -4 are wrong...)
read more ..
Guest
Feb 23, 2020
0
344
1
help
Two consecutive integers a and b, where a is bigger, have a sum of 7. Find a^2 - b^2.
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Guest
Feb 23, 2020
0
346
1
stamp
If I have 50 20c stamps, how much dollars do I have altogether?
for some reason these types of questions confuse me
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Guest
Feb 23, 2020
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