All Questions ⁺⁰234943 Questions

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362

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probability

A jar contains two red marbles, three green marbles, ten white marbles and no other marbles. Two marbles are randomly drawn from this jar without replacement. What is the probability that these two marbles drawn will both be red?

Guest Jun 1, 2020

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594

1

help

Xavier can read 100 pages per hour and Max can read 50 pages per hour. If they each read the same book, and the book has 225 pages, how many more minutes than Xavier would it take for Max to finish reading the book?

Guest Jun 1, 2020

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483

1

help

For a particular circle, a central angle of 75° will intercept an arc of length 10*pi feet. What is the radius of this circle?

Guest Jun 1, 2020

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394

1

HELP PLEASE ! ! !

Triangle ABC has altitudes AD, BE, and CF. AD=12cm and BE=14cm. Find the largest possible value for CF if CF is an integer.

Guest Jun 1, 2020

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635

2

trouble with logarithms

Let
where

and a and b are relatively prime positive integers. Find the smallest possible value of a+b. read more ..

Guest Jun 1, 2020

0

527

3

anyone????

I've posted this question two times, but no one has answered so I'm going to post it one last time.. :(

The closed form sum of

for is n(n+1)(n+2)(an+b). Find an+b.
read more ..

Guest Jun 1, 2020

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1422

1

help

Let
There is a unique ordered pair (c,d) such that is the closed form for sequence A_n. Find c using the Fibonacci and Lucas number sequences.

Guest Jun 1, 2020

0

786

1

help

A rocket traveled 12,000 miles in the first four hours. Then the rocket traveled 8000 miles in the next four hours. What was the rocket’s average speed, in miles per hour, for these 8 hours?

Guest Jun 1, 2020

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594

5

Help ASAP!

Let f(x) be a quadratic polynomial such that f(-4) = -22, f(-1)=2 , and f(2)=-1. Let g(x) = f(x)^{16}. Find the sum of the coefficients of the terms in g(x) that have even degree. (For example, the sum of the read more ..

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Guest Jun 1, 2020

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626

2

geo question

A regular 2016-gon whose sides are 2 inches long has an inscribed circle and a circumscribed circle. What is the area of the region between the two circles?

Guest Jun 1, 2020

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1027

1

trig

To estimate the height of a radio tower, Jody steps 25 feet away from the center of the tower's base, until his line of sight to the top of the tower and his line of sight to the center of its base form a right angle. His eyes are 6 feet above the ground. read more ..

Guest Jun 1, 2020

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944

1

+980

help please?

The area of a rectangle is 80 sq ft. If the width is increased by 1 foot and the length is decreased by 1 foot, the new rectangle has area 90 sq ft. What is the perimeter of the original rectangle, in feet?

qwertyzz Jun 1, 2020

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360

0

Help ASAP

Mrs. Zhu wants to analyze the performance of her seventh grade classes. She thinks that students perform better in the morning than in the afternoon. The box plots show the scores of Mrs. Zhu's First period, Second period, and Sixth period classes for one read more ..

Guest Jun 1, 2020

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480

1

help

Solve the inequality 2x + 1 > 7x - 3.

Guest Jun 1, 2020

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690

1

please help

A segment has endpoints P(1, 1) and Q(x, y). The coordinates of the midpoint of segment PQ are positive integers with a product of 36. What is the maximum possible value of x?

Guest Jun 1, 2020

0

596

2

help

On a standard clock, how many degrees does the minute hand rotate during the time period from 4:12 pm to 4:48 pm of the same day?

Guest Jun 1, 2020

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415

0

Probability statements

How would I solve this?

Guest Jun 1, 2020

May 31, 2020

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355

1

please help!

How many integers x satisfy x^2 < 7x?

Guest May 31, 2020

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360

0

help

R is a rectangle, and S is a square.

The length of the longer side of rectangle R is 10 percent more than the length of a side of square S. The length of the shorter side of rectangle R is 10 percent less than the length of a side read more ..

Guest May 31, 2020

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881

1

help

Adam and Eve play rock-paper-scissors 10 times. You know that: Adam uses rock three times, scissors six times, and paper once. Eve uses rock twice, scissors four times, and paper four times. There are no ties in all 10 games.The order of games is unknown. read more ..

Guest May 31, 2020

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659

1

please help i have no idea how to solve this question :(

Let be the circle centered at with radius The lines and divide into four regions . Let denote the area of region . If then find .
read more ..

Guest May 31, 2020

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