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Post New Question
All Questions
+0
237665 Questions
0
1874
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+193
NEED HELP!!!! DUE SOON!!!!
ABCDEFGH shown below is a cube with volume 1. Find the volume of pyramid ABCH.
hectictar
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Confusedperson
Jun 21, 2018
0
994
1
+577
Another question
I am indeed making my return to answer questions on this site once i finish my math final, in the meantime, i have a few problems to finish for my homework XD
What is the vertex of the graph of ?
I am confused as to how
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OfficialBubbleTanks
Jun 21, 2018
-1
1376
1
HELP!!
Let ABCD be a convex quadrilateral, and let M and N be the midpoints of sides AD and BC, respectively. Prove that MN<=(AB+CD)/2. When does equality occur?
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Guest
Jun 21, 2018
0
2057
2
+67
Write each ratio in simplest form.
Write each ratio in simplest form.
50 m : 30 m
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AshleyGordo
Jun 21, 2018
+1
1668
4
+67
What percent of 8 is 1,280?
What percent of 8 is 1,280?
A 1.6%
B 1,600%
C 160%
read more ..
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AshleyGordo
Jun 21, 2018
0
1447
2
+67
I'm dumb and need help.
I'm dumb and need help.
The sales tax rate is 5.5%. Find the tax paid for a coat that costs $60.
A $33.00
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AshleyGordo
Jun 21, 2018
0
755
2
sin
I am trying to find the inverse sin key to solve this equation
sin i=2.23/3.78
Help please
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Guest
Jun 21, 2018
0
915
1
help me
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 21, 2018
0
1115
2
+1378
One more for tonight
Before I catch up on the 32 hours of sleep I have missed...
In right triangle ABC with angle B = 90 degrees, we have 2 sin A = 3 cos A. What is sin A?
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AnonymousConfusedGuy
Jun 21, 2018
+1
1743
2
+1378
Circle is the incircle of triangle ABC and is also the circumcircle of triangle XYZ. The point X is on line BC, point Y is on
Circle is the incircle of triangle ABC and is also the circumcircle of triangle XYZ. The point X is on line BC, point Y is on overline AB, and the point Z is on line AC. If angle A=40 degrees, angle B=60 degrees, and angle
read more ..
heureka
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AnonymousConfusedGuy
Jun 21, 2018
+1
1213
3
+35
Next steps.
In how many different ways can be represented as , if and are positive integers with ?
I chose to use Simon's Favorite Factoring trick.
I let 2/15 = 1/a + 1/b. Multiplied both sides by 15/2 and ab: ab = 15/2*(a) + 15/2*(b).
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Toytrain
Jun 21, 2018
0
1264
6
+753
Number theory
The House of Lilliput is using RSA encryption to receive secret messages from all the realms. They have published their public encoding exponent 37 and their public modulus M=pq=527.
Break the code: Find their secret decoding exponent d
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MIRB16
Jun 21, 2018
+1
2717
2
+1378
Right-Triangle Geometry
In right triangle DEF, we have angle E = 90 degrees and tan D = 3*sin D. What is sin F?
Super confused about this one, thanks!
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AnonymousConfusedGuy
Jun 21, 2018
0
2029
1
+193
DUE SOON!!!!!
Assume that the length of Earth's equator is exactly 25,100 miles and that the Earth 45˚ North Latitude, exactly halfway between the equator and the North Pole. What is the number of miles in the circumference of the circle on Earth parallel to the equator
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Confusedperson
Jun 21, 2018
+1
1056
2
+193
PLZ HELP!!!!
A right cylindrical tank with circular bases is being filled with water at a rate of cubic meters per hour. As the tank is filled, the water level rises four meters per hour. What is the radius of the tank, in meters? Express your answer in simplest
read more ..
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Confusedperson
Jun 21, 2018
0
2197
2
+193
HELP PLZ!!!!
A cube has side 6 lengths. Its vertices are alternately colored black and purple, as shown below. What is the volume of the tetrahedron whose corners are the purple vertices of the cube? (A tetrahedron is a pyramid with a triangular base.)
read more ..
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Confusedperson
Jun 21, 2018
+1
868
1
+193
Help!!! DUE SOON!!!
Sally has a cube of side length s units such that the number of square units in the surface area of the cube equals 1/6 of the number of cubic units in the volume. She also wants to make a square for which the number of square units in the area of the square
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Confusedperson
Jun 21, 2018
-1
6164
5
+1378
A Couple of Questions
1: If A is an acute angle such that tan A + sec A = 2, then find cos A.
2: In triangle GHI, we have GH = HI = 25 and GI = 30. What is sin (angle GHI)?
read more ..
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AnonymousConfusedGuy
Jun 21, 2018
0
1418
1
Pls help asap
Two sides of a (non-degenerate) triangle are 11 and 17. How many possible lengths are there for the third side, if it is a positive integer?
(pls show work)
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Guest
Jun 21, 2018
Jun 20, 2018
0
607
1
whats the quadratic function?
f(x)=2x2−3x+5
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Guest
Jun 20, 2018
0
1282
3
+47
please help--counting w/ symmetry
In how many distinct ways can I arrange my five keys on a keychain, if I want to put my house key next to my car key? Two arrangements are not considered different if the keys are in the same order (or can be made to be in the same order without taking
read more ..
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lolzforlife
Jun 20, 2018
+1
812
2
+818
Help, please!
On a county map, the distance between Tinsel Town and Emerald City measures 3.5 in. The actual distance between the two locations is 42 mi. If the distance between Emerald City and Diamond Bluff measures 2.75 in on that same map, how many miles apart are
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mathtoo
Jun 20, 2018
0
1055
7
How many ways can you find natural numbers which add up to 10 if the order matters. Count 10 by itself as 1 way.
How many ways can you find natural numbers which add up to 10 if the order matters. Count 10 by itself as 1 way.
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Guest
Jun 20, 2018
0
1
7864
1
MATH QUESTION
major league baseball's fastest recorded pitch is 105 miles per hour. The distance between the pitcher's mound and home plate is 60 feet, 6 inches. How long did it take the ball to travel from the pitcher to the batter? There is multiple choice
read more ..
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Guest
Jun 20, 2018
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