All Questions ⁺⁰237808 Questions

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614

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Algebra help please

How do you simplify x^28/y^-21 ?

Guest Jul 5, 2020

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461

1

help

Alex, Bob, and five friends are randomly assigned seats on a train. Six of them will sit in two rows of 3 that face each other, while the last person will have to stand. What is the probability that Alex and Bob are sitting directly across from each other? read more ..

Guest Jul 5, 2020

0

912

1

+335

Halp ASAp

For every mile of highway on land, the city needs two truckloads of asphalt and one gallon of paint. For every mile of highway on bridges, the city needs one truckload of asphalt and three gallons of paint. The city has 50 truckloads of asphalt and 80 gallons read more ..

Rayjplayz Jul 5, 2020

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550

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+335

Halp

In this problem, we investigate optimization in an infinite (unbounded) region of the plane. Consider the three inequalities
and
(a) Graph the region of points that satisfy read more ..

Rayjplayz Jul 5, 2020

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440

0

help

Find constants A and B such that

Guest Jul 5, 2020

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664

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+335

halp plz

Find the max. and min. values for 4x+y if -2 and .

Rayjplayz Jul 5, 2020

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593

1

+335

help

Given that 0,a,b,c,d, which of the following is largest:
a+b/c+d, a+d/b+c, b+c/a+d, b+d/a+c, c+d/a+b

Rayjplayz Jul 5, 2020

+1

796

1

+335

Optimization

Mitch's pool can hold 10,000 gallons of water. At noon, the pool is 80% full. Unfortunately, the pool has a leak, and it loses 120 gallons of water every hour. Mitch turns on a hose at noon that fills the pool at a rate of 225 gallons per hour. He checks read more ..

Rayjplayz Jul 5, 2020

Jul 4, 2020

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606

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need help with geometry

The diagram consists of a large circle and four small circles.
Each of the smaller circles has radius 1 and touches the large circle and the two small circles next on either side of it.

What is the area of the shaded region? read more ..

Guest Jul 4, 2020

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591

1

help

If x satisfy the equation , find the value of

Guest Jul 4, 2020

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614

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help

For how many positive integers n such that 7n+1 is divisible by 3n+5?

Guest Jul 4, 2020

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554

2

HELP ASAP

What is (n/n-1) for any positive integer n? (Answer in terms of n.)

Guest Jul 4, 2020

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508

2

counting

In how many ways can 3 distinct numbers be chosen from the set {1,2,3,…,10} such that the sum of the numbers is odd?

Guest Jul 4, 2020

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604

2

quadratic

Find the vertex of the graph of the equation y = -2x^2 + 9x - 18.

Guest Jul 4, 2020

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550

4

help with counting

How many 4 digit even numbers can be formed using the numbers 2,3,5,8,9?
Note: The same number can repeat. For example, 2222 must also be counted

Guest Jul 4, 2020

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645

3

help

Jack has y chocolates and Jill has x chocolates.
If Jack gives 1 chocolate to Jill, then they will have an equal number of chocolates.
If Jill gives 1 chocolate to Jack, then Jack will have twice as many chocolates as Jill. read more ..

Guest Jul 4, 2020

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1212

2

help

There are ten people in the Baking Club, including Mark. They choose $3$ people to form an executive committee. How many possible committees could be formed that include Mark?

Guest Jul 4, 2020

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507

1

Answer to the question below my post.

A lot. You probably have to ask them yourself. But be careful of 667. He's pretty obsessive of his possessions.

Guest Jul 4, 2020

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509

2

helpp

How many three-digit whole numbers have at least one 7 or at least one 9 as digits?

Guest Jul 4, 2020

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472

1

help

Let A and B be subsets of {1, 2, 3, ..., 10}. Find the number of pairs (A,B) such that

Guest Jul 4, 2020

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653

3

PLEASE HELP ASAP

There are ten people in the Baking Club, including Mark. They choose $3$ people to form an executive committee. How many possible committees can be formed?

Guest Jul 4, 2020

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553

2

help

Once upon a time there was a man who sold eggs for his livelyhood. One day he was going to sell those eggs and suddenly collide to a drunkardand all eggs were smashed.So he complaint to head of village and he asked him how many eggs were there.In response read more ..

Guest Jul 4, 2020

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533

1

HELP ASAP

Find the constant c such that (x^2-4x+3)(x+5) - (x^2+4x-5)(x-c)= 0, for all x.

Guest Jul 4, 2020

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565

1

help

Solve

I have no idea how to do this.

Guest Jul 4, 2020

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