All Questions

1085

Help with counting with restrictions

1. How many three-digit whole numbers have no 7's and no 9's as digits?
2. Three schools have a chess tournament. Four players come from each school. Each player plays three games against each player from the other schools, and plays one read more ..

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Guest Jun 10, 2018

1017

geometry problem

Triangle ABC with vertices at A(1, 1), B(1, -2) and C(5, -2) is translated up 3 units and then dilated with respect to the origin by a factor of 2. What are the new coordinates of point C? Express your answer as an ordered pair. read more ..

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Guest Jun 10, 2018

2294

help

Jon teaches a fourth grade class at an elementary school where class sizes are always at least 20 students and at most 28. One day Jon decides that he wants to arrange the students in their desks in a rectangular grid with no gaps. Unfortunately for Jon read more ..

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Guest Jun 10, 2018

1701

+1246

Help!

For specific positive numbers $m$ and $n$, the quadratics $16x^2+36x+56$ and $(mx+n)^2$ differ only in their constant term. What is $mn$?

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Lightning Jun 10, 2018

1864

+1246

Help!

If the two roots of the quadratic $7x^2+3x+k$ are $\frac{-3\pm i\sqrt{299}}{14}$, what is $k$?

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Lightning Jun 10, 2018

1658

+239

Percents

Every June 1, an ecologist takes a census of the number of wrens in a state park. She noticed that the number is decreasing by 40% each year. If this trend continues, in what year will the census show that the number of wrens is less than 10% of what read more ..

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Firewolf Jun 10, 2018

682

Finding the exact value of cos θ?

Here's the question:

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Guest Jun 10, 2018

1072

+53

Need help with this Physics question

Hi there.

Just got my head stuck around this question.
read more ..

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bqrs01 Jun 10, 2018

1945

I need help!

This is my first time doing this can someone explain hoe to do permutations?
Compute $\binom{223}{221}$.

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Guest Jun 10, 2018

1547

+168

Volume

Ali has 1litre of squash, He always mixes 0.05 litres of squash with 200ml of water to make a glass of drink.

Find the total volume of drink he can make, give answer in litres.
read more ..

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Walthamx Jun 10, 2018

1133

stuck

Find the greatest prime divisor of the sum of the arithmetic sequence 1 + 2 + 3 + ...+ 80.

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Guest Jun 10, 2018

463

help please

Kirsty needs to hire a plumber to fix her house. The plumber charges 242_5 dollars for every hour of labor and 367_{8} dollars for equipment. If the plumber works for 3.5_{10} hours, how many dollars (in base ten) will Kirsty owe the plumber? read more ..

Guest Jun 10, 2018

2319

help

help and give explanation

read more ..

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Guest Jun 10, 2018

3222

ping pong and math yay help!!

Cosmin has three ping pong balls, and ten cups in front of him. If he throws the ping pong balls into the cups, what is the probability that they will land in different cups? (A ping pong ball has an equal probability of landing in any cup.)
read more ..

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Guest Jun 10, 2018

673

please help with math

Matleena choose three numbers at random from the numbers 1, 2, 3, 10. What is the probability that they are not all consecutive? (For example, the three numbers 6, 7, 8 are consecutive.)

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Guest Jun 10, 2018

722

simple math question

A box contains 4 white balls and 5 red balls. I draw 3 of them out of the box, one at a time, and set them aside. What is the probability that the balls I draw alternate between the two colors?

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Guest Jun 10, 2018

1840

+1904

Calculus Help

Find the absolute maximum and absolute minimum values of f in the given interval.

f(t)=t+cot(t/2) [pi/4, 7pi/4]
read more ..

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gibsonj338 Jun 10, 2018

-4

1033

+73

State the domain and rage of each graph:

State the domain and range of each graph:

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GAMEMASTERX40 Jun 10, 2018

705

Help with these function.

Suppose are all linear functions, and and are defined by

read more ..

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Guest Jun 10, 2018

Jun 9, 2018

841

+818

Range Question...

For a certain set of five numbers, the mean of all but the largest number is 80, and the mean of all but the smallest number is 90. What is the range of the set of five numbers?

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mathtoo Jun 9, 2018

1546

The product of positive integers x, y and z equals 2004. What is the minimum possible value of the sum x + y + z?

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Guest Jun 9, 2018

997

Find the product of the divisors of 50.

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Guest Jun 9, 2018

1150

+168

Triangle in square

Please help

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Walthamx Jun 9, 2018

1067

+1246

Help!

The values of $x$ such that $$2x^2 - 6x + 5 = 0$$ are $m+ni$ and $m-ni,$ where $m$ and $n$ are positive. What is $m\cdot n?$

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Lightning Jun 9, 2018

All Questions ⁺⁰237796 Questions

Help with counting with restrictions

geometry problem

help

Help!

Help!

Percents

Finding the exact value of cos θ?

Need help with this Physics question

I need help!

Volume

stuck

help please

help

ping pong and math yay help!!

please help with math

simple math question

Calculus Help

State the domain and rage of each graph:

Help with these function.

Range Question...

The product of positive integers x, y and z equals 2004. What is the minimum possible value of the sum x + y + z?

Find the product of the divisors of 50.

Triangle in square

Help!

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