All Questions

480

Help me thanks

Find the smallest possible value of
where x, y and z are distinct real numbers.

●

Guest Feb 2, 2020

1096

help please

A number 84 is divided into two parts. if the difference between half of the first part and one-third of the second part is 12, find two parts of number.

●●●●●●●●●●●

Guest Feb 2, 2020

476

help

A small Plane can travel 120 mph in still air. The plain can fly 700 miles with the wind in the same that it can travel 500 miles against the wind. Find the speed of the wind.

●

Guest Feb 2, 2020

703

need help on this

A cube 4 units on each side is composed of 64 unit cubes. Two faces of the larger cube that share an edge are painted blue, and the cube is disassembled into 64 unit cubes. Two of the unit cubes are selected uniformly at random. What is the probability read more ..

●

Guest Feb 2, 2020

824

+312

GEOMETRY X

Two concentric circles are shown. If the area of the shaded region is equal to the area of the non-shaded region. what is the ratio of the radius of the larger circle to the radius of the smaler circle? Express your answer in simplest radical form. read more ..

●

mathleteig Feb 2, 2020

858

help

A banana and an apple balance a mango. A banana balances an apple and a nectarine. Two mangoes balance with three nectarines how many apples will balance with a banana

●●

Guest Feb 2, 2020

485

help needed

A boat can travel 12 km down the river in the same time it can go 4 km up the river. If the current in the river is 2 km per hour, how fast can the boat travel in still water?

●

Guest Feb 2, 2020

773

+1995

help with 3 questions

question 1.

question 2.
read more ..

●

jjennylove Feb 2, 2020

-1

807

+41

help

We say that a quadrilateral is a bow-tie if two of the sides cross each other. Seven different points are chosen on a circle. We draw all C(7,2) chords that connect two of these points. Four of these 21 chords are selected at random. read more ..

●●

Nightmist Feb 2, 2020

-1

688

+41

help

Find the number of ways of arranging the numbers 1,2,3...12 in a 3x4 array (with three rows and four columns), so that the sum of the numbers in each column is divisible by 3. Each number must appear exactly once in the array.
(show working read more ..

Nightmist Feb 2, 2020

-1

762

+41

help

I have a bag that contains 6 nickels and 5 pennies. I draw coins from the bag at random, without replacement. Find the probability that after drawing 4 coins, I have removed at most 2 pennies from the bag.

●

Nightmist Feb 2, 2020

-1

764

+41

help

The Bad News Bears are playing against the Houston Toros in a baseball tournament. The first team to win three games wins the tournament. The Bears have a probability of 2/3 of winning each game. Find the probability that the Bears win the tournament. read more ..

●

Nightmist Feb 2, 2020

-2

909

+41

help

(a) Simplify

(b) In the expansion of (1 + x)n, there exist three consecutive coefficients a,b,c that satisfy a:b:c = 1:7:35. Find the positive integer n.

●●

Nightmist Feb 2, 2020

816

+96

math help ;-;

1)

Simplify
2) read more ..

●●●

daddypig Feb 2, 2020

1922

help!!

avatar Daniel stands on one side of a stream that is 400 feet wide. He wants to reach his campsite on the opposite side of the stream. The campsite is 1600 feet away from the point directly opposite where Daniel stands. He decides that he will swim to the read more ..

●●

Guest Feb 2, 2020

619

Homework Don't know what to do

||a|| = 4, ||b|| = 5, and ||a+b|| = 7, what is ||2a-3b||?

So what I did was I tried going backwards, by trying to find out what two squares add up to 25, and 4. I know that 3 squared + 4 squared = 25, but what to do from there. read more ..

●●

Guest Feb 2, 2020

505

please help

Some amount of a 120 gram 16% solution was taken out and replaced with pure alcohol. The result was a solution of 30% alcohol. How many grams were taken out?

●

Guest Feb 2, 2020

549

need help

There are 22 students from with 6 people will be selected to be on a panel if Allen and Joe are 2 of the 22 student then what is the probability that neither will be selected to be on the panel

Guest Feb 2, 2020

2942

Please Help

If I give my sister 5 dollars, then we will have the same amount of money. If instead she gives me 14 dollars, then I'll have twice as much money as she will have. How much money does she currently have (in dollars)?

●

Guest Feb 2, 2020

1001

+1443

Need Biology help. Please, only answer the question if you know the answer for sure, thx.

Which is one of the differences between non-flowering seed plants and flowering seed plants?

A) Presence of stomata in the roots.
read more ..

off-topic

●●●●●●●●●

SmartMathMan Feb 2, 2020

785

probability

At a certain highschool,47% of the students are females and 32% of the students are taking biology. furthermore 11% of the students are both female and taking biology. what is the probability that a randomly selected female is taking biology? read more ..

●

Guest Feb 2, 2020

Feb 1, 2020

485

help

Last season 2 running backs on the Steelers football team rushe for a combined total of 1550 yards. One rushed 4 times as many yards as the other. How many yards were rushed by each player ?

●

Guest Feb 1, 2020

586

please help

David typically takes 3 hours less than Marilyn to build a shelf if each work alone. David and Marilyn worked together to build shelf for 1 hour, and then Marilyn finished the job without David after an additional 3 hours. How long would it have taken David read more ..

●

Guest Feb 1, 2020

685

help

Danica has laid out floor tiles so they form a rectangle with a perimeter of 18inches. What is the difference between the greatest and least possible areas of the rectangle?

●

Guest Feb 1, 2020

All Questions ⁺⁰238062 Questions

Help me thanks

help please

help

need help on this

GEOMETRY X

help

help needed

help with 3 questions

help

help

help

help

help

math help ;-;

help!!

Homework Don't know what to do

please help

need help

Please Help

Need Biology help. Please, only answer the question if you know the answer for sure, thx.

probability

help

please help

help

6 Online Users

Top Users

Sticky Topics