All Questions ⁺⁰230908 Questions

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783

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Help

In how many ways can I arrange 3 different math books and 5 different history books on my bookshelf, if I require there to be a math book on both ends?

Oofrence ●●

Guest Oct 15, 2019

0

537

1

Gonna need some help with this

Find all real numbers T such that (2/3)t - 1 < t + 7 ≤ -2t + 15.

Thanks, read more ..

Guest Oct 15, 2019

0

860

1

+1206

help

A woman labels the squares of a very large chessboard 1 through 64. On each square k, the woman puts 2^k grains of rice. How many more grains of rice are placed on the square than on the first 8 squares combined?

Logic Oct 15, 2019

0

1020

1

+1206

help please

A ball bounces back up of the height from which it falls. If the ball is dropped from a height of 243 cm, after how many bounces does the ball first rise less than 30 cm?

Logic Oct 15, 2019

0

943

2

+1206

help again

We define a function f(x) such that f(11)=34, and if there exists an integer a such that f(a)=b, then f(b) is defined

and f(b)=3b+1 if b is odd
read more ..

hectictar ●●

Logic Oct 15, 2019

0

780

1

+1206

help please

Find the domain of the function .

Logic Oct 15, 2019

0

798

1

+1206

help again please

How many integers have an absolute value less than ?

Logic Oct 15, 2019

0

1416

3

+1206

help

For how many non-negative real values of x is an integer?

Logic Oct 15, 2019

0

779

2

+1206

help

Find x, such that .

Logic Oct 15, 2019

+1

855

3

+220

help plz

A bacterial culture is growing exponentially, and its mass increases from 2 mg to 5 mg in 30 hours. Find the mass of the culture after 25 hours.

Oofrence Oct 15, 2019

+1

830

1

+220

help

Find if tan = 5/12 and is in Quadrant III.

Oofrence Oct 15, 2019

0

843

1

+1206

help again :(

Jose invested for 2 years at an annual interest rate of 4 percent compounded yearly. Patricia invested for the same period of time, at the same interest rate, but the interest was compounded quarterly. To the nearest dollar, how much more money read more ..

Logic Oct 15, 2019

0

865

1

+1206

help again

Given that , what is the range of f(x) on the interval ? Give your answer in interval notation.

Logic Oct 15, 2019

0

735

4

+220

A few questions i need answering on

1. The graphs of and intersect at only one point. What is the value of x?
I think you should do x^2 + 2x + 7 = 6x + b, but i don't know how to continue
2. Find all pairs (x, y) such that
I dont' know read more ..

Oofrence Oct 15, 2019

0

791

1

+1206

help please

Find h(x), with terms in order of decreasing degree, if

Logic Oct 15, 2019

0

985

1

+1206

help

Suppose that f is a polynomial such that

What is the degree of f? read more ..

Logic Oct 15, 2019

0

615

1

+1982

Record your calculations under 'Annual income' in the table

For each of the professions in the left column, calculate the annual pay based on full-time, year-round employment consisting of 2,000 hours a year (40 hours per week for 50 weeks each year). Record your calculations under "Annual income" in the table read more ..

macabresubwoofer Oct 15, 2019

+43

1

5448

14

+128579

HAPPY BIRTHDAY, HECTICTAR !!!

She is one of the best "answerers" on this site [ even though she IS from Alabama....well.....everyone can't be perfect !!!! (Hehehe!!) ]
read more ..

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CPhill Oct 15, 2019

Oct 14, 2019

0

665

1

+143

Define the function q(y)=w/1-y. If q(-1)=q^-1(4w+1), what are all the possible values of w.

Define the function q(y)=w/1-y. If q(-1)=q^-1(4w+1), what are all the possible values of w.

AoPS.Morrisville Oct 14, 2019

0

1306

4

+143

Parabolas Practice Problem - MATHCOUNTS

Let P be the parabola in the plane determined by the equation y=x^2. Suppose a circle C intersects P at four distinct points. If three of these points are (-28,784),(-2,4)&(13,169) find the sum of the distances from the focus of P to all four read more ..

AoPS.Morrisville Oct 14, 2019

0

894

3

+143

Quadratic Equation Simplification

Krzysztof solved the quadratic equation by completing the square. In the process, he came up with the equivalent equation where r and s are constants.
What is r+s?

Found the root: . Don't understand read more ..

AoPS.Morrisville Oct 14, 2019

+2

1305

21

+118

Please help, quick!

There are 20 chairs numbered from 1 through 20 around a circular table. How many ways can three people be seated, so that no two people are adjacent?

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OlympusHero Oct 14, 2019

+1

645

1

Need help please!

I’m stuck with this question can someone help me please. Thank you.

Guest Oct 14, 2019

0

642

1

HELP PLZ

Find all values of z such that {3-z}/{z+1} ≥ 1. Answer in interval notation.

Guest Oct 14, 2019

0

607

1

+14

Please Help

In right triangle with , we have and . Find .

Herp2derp Oct 14, 2019

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