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584

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

662

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. read more ..

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Guest Jan 12, 2020

Jan 11, 2020

540

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 read more ..

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Guest Jan 11, 2020

670

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

775

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

593

need help quick!

Line segments AB and CD are parallel. FInd x.

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Guest Jan 11, 2020

525

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 read more ..

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Guest Jan 11, 2020

630

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

1385

+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 read more ..

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mathleteig Jan 11, 2020

580

trig help

If sin(2x) = 2/3, then find sin(x)^6 + cos(x)^6.

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Guest Jan 11, 2020

570

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

1286

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.

read more ..

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Guest Jan 11, 2020

731

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. read more ..

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Guest Jan 11, 2020

804

What is 41% as a fraction

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Guest Jan 11, 2020

714

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

932

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 read more ..

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Guest Jan 11, 2020

710

help please

The ratio of green area to red area is 25 : 6.
What is the area of entire rectangle?

read more ..

ElectricPavlov ●●

Guest Jan 11, 2020

2331

Help!

∞
An infinite series is represented by ∑ read more ..

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Guest Jan 11, 2020

825

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

666

i need help!

Find the area of a cyclic quadrilateral with sides 2, 2, 3, 1.

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Guest Jan 11, 2020

1669

+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

641

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

602

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

1289

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

All Questions ⁺⁰237643 Questions

help

Geometry Help Please

need help..

Dice !!

help coordinate geometry

need help quick!

Help On Coordinate Geometry!

i need some help....distinguishability

PRE-ALGEBRA

trig help

geometry

Help please

need help

What is 41% as a fraction

help

geo help

help please

Help!

help

i need help!

Help please!

help me please!

help

Hi can someone please help me and explain this problem to me?

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