All Questions

459

please help

Two piggy banks contains some coins. The first piggy bank contains 4 fair coins and 2 biased coins in favor of heads. The second piggy bank contains 2 fair coins and 4 biased coins in favor of tails. The biased coins follow the odds 2:1. A piggy bank is read more ..

●

Guest Jun 15, 2020

678

help

How many ways can you rearrange the letters in BANANA so that no letter winds up in the same spot?

●●

Guest Jun 15, 2020

424

help

In △ABC, ∠ABC=30°. Points P and Q are chosen on AC such that AP+BC= AB+CQ The internal angle bisector of ∠ABC intersects AC at R. Given that R is the midpoint of PQ, find ∠BAC (in degrees). read more ..

Guest Jun 15, 2020

936

Probability from Verbal Description

In a class 22 of students, 17 play an instrument and 12 play a sport. There are 10 students who play an instrument and also play a sport. What is the probability that a student who plays a sport also plays an instrument?

●●

Guest Jun 15, 2020

590

help

The curve above represents a parabola, it has an x-intercept of -1 and y-intercept of 2. Find the area of the square.

read more ..

●●

Guest Jun 15, 2020

1899

+80

pls help asap

You take the four Aces, four $2$'s, and four $3$'s from a standard deck of 52 cards, forming a set of $12$ cards. You then deal all $12$ cards at random to four players, so that each player gets three cards. What is the probability that each player gets read more ..

●●●●

Sarvajit Jun 15, 2020

458

help

Calculate the value of:

when x is a positive integer.

●

Guest Jun 15, 2020

468

help

If the following infinite series S is evaluated as a decimal,what is the 37th digit to the right of the decimal place?

●

Guest Jun 15, 2020

529

help

Find the sum of the digits in the numbers 1, 2, 3, ..., 97, 98, 99.

●

Guest Jun 15, 2020

1838

Help please

I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 30 miles per hour instead, then I would have arrived 20 minutes later. How many miles did I drive?

●

Guest Jun 15, 2020

597

A Word Problem

A circle has the equaton (x-2)^2+(y+3)^2=4 and a line has the equation 5y-4x+20=0.

a) What is the distance from the center of the circel to the line.
read more ..

●

Guest Jun 15, 2020

-1

738

+26

Number Theory

How many multisets of cardinality 3 made from {a,b,c,d}{a,b,c,d}?

●●●●

guesttttt Jun 15, 2020

-1

696

+26

Number theory

Show that if p > 3 is a prime, then p^2 ≡ 1 (mod 24)

●●

guesttttt Jun 15, 2020

-1

640

+26

Number theory

Show that if p > 3 is a prime, then p^2 ≡ 1 (mod 24)

guesttttt Jun 15, 2020

-1

651

+26

Algebra

K=1/3
I=9
W=7/9
What's KI * WI read more ..

●●

guesttttt Jun 15, 2020

1024

+35

Help Plz Urgent!

Diane has one 1-cent stamp, two identical 2-cent stamps, and so on, up to nine identical 9-cent stamps. In how many different arrangements can Diane paste exactly 10 cents worth of postage in a row across the top of an envelope? (Note, however, that simply read more ..

●

Mosspelt6 Jun 15, 2020

-1

600

+26

equation

(2x + 3)(x^2 − x − 5).
expand

guesttttt Jun 15, 2020

478

Geometry Questions

1. Find the area of the Convex Quadrilateral with vertices (1,5), (2,3), (7,6), (7,1)

2) A line goes through (2,3),and (-8,-2). The line has an X intercept read more ..

●

Guest Jun 15, 2020

-1

771

+26

algebra

what is the slope of a line drawn between the points (-5,5) and (3,-1)?

●

guesttttt Jun 15, 2020

-1

617

+26

algebra

-x - 1 = 221 + 2x

guesttttt Jun 15, 2020

457

Some Geometry Questions

1) Find the Area of Triangle ABC

2) In the diagram, sin A =0.8. Find Tan C. read more ..

●

Guest Jun 15, 2020

749

Let the number of ways for a rook to return to its original square on a 4 × 4 chessboard...

Let the number of ways for a rook to return to its original square on a 4 × 4 chessboard in 8 moves if it starts on a corner be k. Find the number of positive integers that are divisors of k. Note: a "move" counts as shifting the rook by a positive number read more ..

●●●

Guest Jun 15, 2020

406

help D:

(2/n + 456238/n^2)/(1/n + 0,007868/n^2)

Guest Jun 15, 2020

527

The perfect square game is played as follows: player 1 says a positive integer, then player 2 says a strictly smaller positive integer, and

The perfect square game is played as follows: player 1 says a positive integer, then player 2 says a strictly smaller positive integer, and so on. The game ends when someone says 1; that player wins if and only if the sum of all numbers said is a perfect read more ..

●

Guest Jun 15, 2020

609

Geometry

Let be a triangle with MB = 4 and MT = 7. Furthermore, let circle ω be a circle with center O which is tangent to MB at B and MT at some point on segment MT. Given OM = 6 and ω intersect BT at I B, find the length of TI.

●

Guest Jun 15, 2020

All Questions ⁺⁰237665 Questions

please help

help

help

Probability from Verbal Description

help

pls help asap

help

help

help

Help please

A Word Problem

Number Theory

Number theory

Number theory

Algebra

Help Plz Urgent!

equation

Geometry Questions

algebra

algebra

Some Geometry Questions

Let the number of ways for a rook to return to its original square on a 4 × 4 chessboard...

help D:

The perfect square game is played as follows: player 1 says a positive integer, then player 2 says a strictly smaller positive integer, and

Geometry

3 Online Users

Top Users

Sticky Topics