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Post New Question
All Questions
+0
232936 Questions
-1
1258
4
+113
help please !
What is the first time after 1pm at which the minute hand and hour hand of a clock point in exactly opposite directions?
Hint: 147
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andrewstanells
Jun 7, 2020
0
453
1
PLs help
In rectangle WXYZ, A is on side \overline{WX} such that AX = 4, B is on side \overline{YZ} such that BY = 18, and C is on side \overline{XY}
such that \angle ACB= 90^\circ and CY = 2CX. Find AB.
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Guest
Jun 7, 2020
0
382
0
How many subsets of the set {1,2,...,11} have median 6?
How many subsets of the set {1,2,...,11} have median 6?
I'm not sure how I'd approach this problem, please help! Thanks.
Guest
Jun 7, 2020
0
495
2
I need some help
I saw this question and I'm currently stumped too.
https://web2.0calc.com/questions/math-a-bit-of-help-needed
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Guest
Jun 7, 2020
+1
716
2
some help would be much appreciated
Let f(n) be the sum of the positive integer divisors of n. If n is prime and f(f(n)) is also prime, then call n a bouncy prime. What is the smallest bouncy prime?
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Guest
Jun 7, 2020
0
870
1
+223
Circles inside the triangle.
Three circles are drawn, so that each circle is externally tangent to the other two circles. Each circle has a radius of 2. A triangle is then constructed, such that each side of the triangle is tangent to two circles, as shown below. Find the perimeter
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envoy
Jun 7, 2020
0
991
1
+223
Lines tangent to a circle, please explain.
Points T and U lie on a circle centered at O, and point P is outside the circle such that and are tangent to the circle. If then what is the measure of minor arc TU, in degrees?
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envoy
Jun 7, 2020
0
1165
1
some help would be nice :)
a gutter can hold up to 20 liters of rain water, (the gutter is a slip in half cylinder) and the diameter of it is 14 cm. what is the length of the gutter in meters?
thank u :)
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Guest
Jun 7, 2020
+1
513
2
Help quick!!!
if daniel makes 60% of his basketball shots, what is the probability that he missed two shots in a row
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Guest
Jun 7, 2020
0
492
1
New Math Question
If ella can read 1/3 a book a day can she finish 3/4 a book in 2 days?
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Guest
Jun 7, 2020
0
505
1
help
In a University out of 120 students, 15 opted mathematics only, 16 opted statistics only, 9 opted physics only and 45 opted physics and mathematics, 30 opted physics and statistics, 8 opted
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Guest
Jun 7, 2020
0
460
1
help help
We construct the following sequence: Beginning at 0, we move to the next whole number by changing our first number by one, our second number by two, our third number by three, etc. If we are able to move backwards to a whole number that has not been previously
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Guest
Jun 7, 2020
0
514
2
Help me I'm stuck
Solve
a + b = 2
a^4 + b^4 = 56
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Guest
Jun 7, 2020
0
459
1
help
In a pack of construction paper, the numbers of blue and red sheets are originally in the ratio 2:7. Each day, Laura uses 1 blue sheet and 3 red sheets. One day, she uses 3 red sheets and the last blue sheet, leaving her with 15 red sheets. How many sheets
read more ..
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Guest
Jun 7, 2020
0
577
1
Help I'm stuck
Find all solutions to the system
a + b = 14,
a3 + b3 = 812.
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Guest
Jun 7, 2020
0
416
2
Percentages of a Mixture, Please help, thank you!!!
A mixture of mud is created with 14% dirt and the rest water. In the morning, half of the water left the mixture because of evaporation. What fraction of the soil is now dirt?
My steps so far:
Let's say the mixture is 100%. 14% is dirt and 86% is
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Guest
Jun 7, 2020
0
427
1
help
Solve the system Ax + y = B, x + By = A for x and y.
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Guest
Jun 7, 2020
+1
652
0
+448
If csc x = -(17/15) and x is in the third quadrent, determine all possible values of the expression
If csc x = -(17/15) and x is in the third quadrent, determine all possible values of the expression tan x + 3 sec x. State all possible values of x in radians.
bioplant
Jun 7, 2020
0
435
1
help
Given a regular octagon, in how many ways can we color one diagonal red and another diagonal blue so that the two colored diagonals cross (in the interior)? Consider rotations and reflections distinct.
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Guest
Jun 7, 2020
0
360
0
help
An ant starts at a vertex, and walks along the edges of a cube. The ant is allowed to cross an edge more than once. What is the largest number of edges that the ant can walk along?
Guest
Jun 7, 2020
0
522
1
help
In a dice game, a player rolls two dice. His score is the larger of the two numbers on the dice. For example, if he rolls 3 and 5, his score is 5, and if he rolls 4 and 4, his score is 4. What is the probability that his score is 3 or less?
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Guest
Jun 7, 2020
0
480
2
help
Given the balance scales below, which weight would balance with last scale?
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Guest
Jun 7, 2020
0
332
0
please help
As shown in the figure, circle of diameter 4 touches the other two circles and the bottom of the rectangle. Circle of diameter 3 touches the top at A and left side of the rectangle. Circle of diameter 6 touches the top at B and two other
read more ..
Guest
Jun 7, 2020
0
1890
6
Geometry help
Here is the questions that I am stuck on,
1. Point Y lies on line segment such that XY = 2 and YZ = 4. Semicircles are constructed with diameters , and . Find the area of the blue region.
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Guest
Jun 7, 2020
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