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507

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A committee consisting of 4 faculty members and 5 students is to be formed. Every committee position has the same duties and voting rights. There are 8 faculty members and 15 students eligible to serve on the committee. In how many ways can the committee read more ..

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Guest Jan 20, 2020

497

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A tank can be filled by one pump in 3.2 hours and by another pump in 80 minutes. A third pump can drain the tank in 2 hours and 20 minutes. If all 3 pumps go into operation, how long will it take to fill the tank?

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Guest Jan 20, 2020

591

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Yellow Cab Taxi charges a $1.75 flat rate for a ride in the cab. In addition to that, they charge $0.45 per mile. Katie has no more than $12 to spend on a ride. At most, how many miles can Katie travel without exceeding her spending limit?

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Guest Jan 20, 2020

969

please help

Find area of the isosceles triangle formed by the vertex and the x-intercepts of parabola y=x^2+4x−12.

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Guest Jan 20, 2020

1143

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How many distinct diagonals of a convex heptagon (7-sided polygon) can be drawn?

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Guest Jan 20, 2020

635

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A quadratic equation is given below.
2x² - 8x + c = y
If the graph of this quadratic equation has a minimum value at (2, 10), what is the value of c?

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Guest Jan 20, 2020

1347

please help!

Supposed you go to a conference attended by 20 canadians and 20 norwegians. How many people must you meet to be certain that you have met two people of the same nationality?

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Guest Jan 20, 2020

508

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Larry rides his bike at a rate of 8.8 inches per second. About how m any miles per hour can Larry ride his bike?

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Guest Jan 20, 2020

863

+41

1988 USAMO Problem 5

Let $p(x)$ be the polynomial $(1-x)^a(1-x^2)^b(1-x^3)^c\cdots(1-x^{32})^k$, where $a, b, \cdots, k$ are integers. When expanded in powers of $x$, the coefficient of $x^1$ is $-2$ and the coefficients of $x^2$, $x^3$, ..., $x^{32}$ are all zero. Find $k$. read more ..

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USAMO2019 Jan 20, 2020

615

need help on these

(b) A machine in a food canning factory produces 250 cans every hour. How many cans would be produced in 25 minutes?

(C) If 14 pens cost $5.60, find the cost of 3 pens.

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Guest Jan 20, 2020

863

+700

simple question i am overthinking once again

general question: how do i even write equivalent expressions to like a given expression?
the question for example asks for an equivalent expression if you are given 5^4x-3
(sorry i did not know how to write that in latex)
i have tried this question read more ..

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Nirvana Jan 20, 2020

467

Please help! Thank you!

For what real values of $c$ is $x^2 + 16x + c$ the square of a binomial? If you find more than one, then list your values separated by commas.

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Guest Jan 20, 2020

Jan 19, 2020

520

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During the budget crisis in California, RCC Business Department was forced to cut 48 sections of classes for the Fall 2011 term. This was a 40% cut. How many sections were offered by the Department before the 40% cut?

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Guest Jan 19, 2020

713

helppp

Below is a magic square, meaning that the sum of the numbers in each row, in each column, and in each of the 2 main diagonals are equal. What is the value of n?
https://docs.google.com/document/d/1WcE0KL96EoktrFj81tNFmbErzg-4e4xroA6KDkorbaQ/edit?usp=sharing read more ..

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Guest Jan 19, 2020

588

help

The probability of a potential employee passing a training course is 86%. If you selected 15 potential employees and gave them the training course, what is the probability that 11 or less will pass the test?

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Guest Jan 19, 2020

684

i need help

A 13 foot long ramp rises 5 feet from the first floor to the second floor. What is the distance from the base of the ramp to the bottom of the first floor?

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Guest Jan 19, 2020

533

help

A kite is flying above the ground at the end of a 100 feet of string. If the angle of elevation of the kite is 65°, how high above the ground is the kite flying?

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Guest Jan 19, 2020

1022

+130

A sine function has the following key features-

A sine function has the following key features:
Period = 4
Amplitude = 3
Midline: y= −1 read more ..

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PeerlessCucumber Jan 19, 2020

863

help

Alex is 12 years older than George Carl is three times older than Alex The sum of their ages is 68 Find the ratio of George's age to Carl's age.

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Guest Jan 19, 2020

515

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Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they charged a total of $1325. What was the rate charged per hour by each mechanic if the sum of the two rates was $170 per hour? read more ..

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Guest Jan 19, 2020

843

At an ocean depth of 20 meters, a buoy bobs up and then down 2 meters from the ocean's depth.

At an ocean depth of 20 meters, a buoy bobs up and then down 2 meters from the ocean's depth. Four seconds pass from the time the buoy is at its highest point to when it is at its lowest point. Assume at x = 0, the buoy is at normal ocean read more ..

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Guest Jan 19, 2020

702

A researcher observes and records the height of a weight moving up and down on the end of a spring.

A researcher observes and records the height of a weight moving up and down on the end of a spring. At the beginning of the observation the weight was at its highest point. From its resting position, it takes 12 seconds for the weight to reach read more ..

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Guest Jan 19, 2020

588

A sine function has the following key features:

A sine function has the following key features:
Period = π
Amplitude = 2
Midline: y=−2 read more ..

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Guest Jan 19, 2020

727

help

A round swimming pool has a circumference of 66 feet. Carlos wants to buy a rope to put across the diameter of the pool. the rope costs $0.45 per foot, and Carlos needs 4 more than the diameter of the pool. How much will Carlos pay for the rope and what read more ..

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Guest Jan 19, 2020

All Questions ⁺⁰230403 Questions

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please help!

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1988 USAMO Problem 5

need help on these

simple question i am overthinking once again

Please help! Thank you!

help

helppp

help

i need help

help

A sine function has the following key features-

help

help

At an ocean depth of 20 meters, a buoy bobs up and then down 2 meters from the ocean's depth.

A researcher observes and records the height of a weight moving up and down on the end of a spring.

A sine function has the following key features:

help

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