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Post New Question
All Questions
+0
230933 Questions
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493
1
help
Seven years ago, my mother was seven times older than me.
In exactly eight years from now, my mother will be two times older than me.
How old is my mother now?
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Guest
Jan 12, 2020
-1
573
4
Geometry Help Please
Let ABCD be a convex quadrilateral, and let P, Q, R, S, T, U, V, and W be points that trisect the sides of ABCD, as shown.
If the area of quadrilateral ABCD is 180 then find the area of hexagon APSCTW.
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Guest
Jan 12, 2020
Jan 11, 2020
0
457
1
need help..
I run a coffee club with n people, not including myself. Every day, for 365 days, I invite four members in the club to have coffee with me. What is the smallest positive integer n so that I can avoid having the same group of four members
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Guest
Jan 11, 2020
0
621
15
Dice !!
9 fair 6-sided dice are rolled. What is the probability of all 6 numbers showing (1, 2, 3, 4, 5, 6)? The remaining 3 numbers can take any value. Thank you.
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Guest
Jan 11, 2020
+1
680
2
help coordinate geometry
Consider the point P(-1, 0) on the ellipse given by the equation 4x^2 + y^2 = 4. There are two points (a, b) and (a, c) on the ellipse whose distance from P is a maximum. What is the value of a?
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Guest
Jan 11, 2020
0
504
1
need help quick!
Line segments AB and CD are parallel. FInd x.
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Guest
Jan 11, 2020
0
439
1
Help On Coordinate Geometry!
1. The lines y=1, y=3, and y=x are drawn along with the point P=(3,0). For certain slopes m, the line P through with slope m will intersect the three given lines so that one of the three points of intersection is the midpoint of the other two points. Find
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Guest
Jan 11, 2020
0
550
6
i need some help....distinguishability
How many ways are there to put 4 distinguishable balls in 4 identical boxes?
Thanks!
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Guest
Jan 11, 2020
0
1313
1
+312
PRE-ALGEBRA
I don't know how I'm screwing this problem up, but I keep getting 20 shirts which is wrong. Can someone take a look at it?
A school's band members raised money by selling magazine subscriptions and shirts. Their profit from selling
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mathleteig
Jan 11, 2020
0
491
2
trig help
If sin(2x) = 2/3, then find sin(x)^6 + cos(x)^6.
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Guest
Jan 11, 2020
0
478
1
geometry
The sides of a right triangle are a, a+d and a+2d with a and d both positive. What is the value of a:d?
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Guest
Jan 11, 2020
0
1194
3
Help please
Quadrilateral PQRS is a square with a side length of 13. Points X and Y lie outside the square so that PX=RY=12 and QX=SY=5. Find XY^2.
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Guest
Jan 11, 2020
0
636
1
need help
There are 380 cards kept on a table in a row all facing downward. There are 200 persons to do a task. 1st person flip all the cards so that all cards are facing upward. Then 2nd person flip every 2nd card and so on ith person flip every ith card.
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Guest
Jan 11, 2020
0
732
1
What is 41% as a fraction
What is 41% as a fraction
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Guest
Jan 11, 2020
0
630
1
help
Given that m - 2 is a positive integer that divides 3m^2 - 2m + 11, find the sum of all such values of m.
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Guest
Jan 11, 2020
0
853
3
geo help
Point E is the midpoint of the side BC of triangle ABC and F is the midpoint of AE. The line through BF intersects AC at D. Find the area, in cm squared, of triangle AFD if
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Guest
Jan 11, 2020
0
618
2
help please
The ratio of green area to red area is 25 : 6.
What is the area of entire rectangle?
read more ..
ElectricPavlov
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Guest
Jan 11, 2020
0
2272
4
Help!
∞
An infinite series is represented by ∑
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Guest
Jan 11, 2020
0
744
2
help
If x^2 + 1/x^2 = 171, what is the positive value of x - 1/x?
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Guest
Jan 11, 2020
0
575
1
i need help!
Find the area of a cyclic quadrilateral with sides 2, 2, 3, 1.
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Guest
Jan 11, 2020
0
1605
4
+20
Help please!
Jada correctly determines four arithmetic means between −11 and 16.
What values does Jada determine?
Jada determines the four arithmetic means to be −5.6 , −0.2 , 5.2, and 10.6.
read more ..
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Tjopp
Jan 11, 2020
0
551
1
help me please!
In triangle ABC, angle A is 41 degrees, angle B is larger than angle C, and all three angles are prime numbers, in degrees. What is the measure of angle B?
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Guest
Jan 11, 2020
0
515
1
help
If sec 4x = csc (x - 20), where 4x is an acute angle, then find the value of x. (All angles are in degrees.)
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Guest
Jan 11, 2020
0
1203
3
Hi can someone please help me and explain this problem to me?
How is the sum expressed in sigma notation?
11 + 17 + 23 + 29 + 35 + 41
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Guest
Jan 11, 2020
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