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460

Does anybody know the answer to this?

A pontoon with base 3 m by 3 m is floating on a lake. When a man swims out and climbs onto it the pontoon
sinks 1 cm. If 1 L of water weighs 1 kg, what is the weight of the man? (Hint: Archimedes’ principle tells us
that the weight of the man is equal read more ..

Guest May 21, 2020

751

help

The arithmetic mean of three numbers x, y and z is 24. The arithmetic mean of x, 2y and z – 7 is 34. What is the arithmetic mean of x and z ? Express your answer as a decimal to the nearest tenth.

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Guest May 21, 2020

710

helppppp!!!!!

Each week, between 30 and 50 students show up for an archery class run by Betty and Wilma. Usually the students break up into groups of equal size for target practice. However, this week, Betty noticed that she could not break the students up into multiple read more ..

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Guest May 21, 2020

820

+288

Equation Question

Find all real solutions for in

-----Thanks!

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madyl May 21, 2020

449

help plsss

A ( 100W , 120V ) bulb is to be operated under a potential difference f effective value 240V and frequency 50Hz calculate the capacitance of the capacitor that should be connected in series with the bulb to allow it to illuminate with the same power read more ..

off-topic

Guest May 21, 2020

-1

594

help

Jack and Jill take a total of $80 to an amusement park. Including admission, Jack spends $24 and Jill spends $20. At the end of the day, Jack has twice as much money as Jill. How many dollars did Jill have at the end of the day?

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Guest May 21, 2020

633

please help

At the 2000 Olympics in Sydney, Australia, 10,200 athletes participated in 28 different sports over a period of 16 days. What was the average number of athletes per sport?

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Guest May 21, 2020

+14

831

+771

It's my birthday today!

Thank you everyone on this amazing forum, you guys helped me learn so much about math! I will continue to help this fourm become a better asset! Cheers!

off-topic

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whymenotsmart May 21, 2020

591

help

During the 20th century, eighteen different men held the office of President of the United States. Eleven of them were members of the Republican Party. What percent of the eighteen presidents was Republican? Round your answer to the nearest whole number. read more ..

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Guest May 21, 2020

538

please help

The height of a cylinder is increased by 40%. What percent will the radius need to be decreased by, in order to keep the volume the same?

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Guest May 21, 2020

780

+83

What is the slope of the line described by the equation below?

What is the slope of the line described by the equation below?
y=10x + 2 Ò A. -10 B. 2. C. 10 OD. 2

plz I need it asap today read more ..

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fatimahalnabulsi55 May 21, 2020

988

The volume of a cone is 16 pi cubic inches. Its height is 12 inches. What is the radius of the cone?

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Guest May 21, 2020

-2

605

ga ga 3000

ga ga ga ga

off-topic

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Guest May 21, 2020

486

help

The number m is a three-digit positive integer, and the is the product of three distinct prime factors x, y, and 10x + y, where x and y are each less than 10. What is the largest possible value of m?

Guest May 21, 2020

-1

753

+80

I am confused

How many ways can you distribute $4$ different balls among $4$ different boxes?

This is different than a problem on web2.0calc, that might seem familiar.

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Sarvajit May 21, 2020

761

plz help asap im really confused

Let k be a positive real number. The square with the vertices (k,0), (0,k), (-k,0), and (0,-k) are plotted on the coordinate plane.

Find conditions on a>0 and b>0 such that the ellipse read more ..

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Guest May 21, 2020

605

help

Three distinct digits a, b, c are used to form six different three-digit numbers. What is the greatest positive integer that is a divisor of the sum of those six numbers, regardless of the original numbers chosen?

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Guest May 21, 2020

852

+80

Combinations

Marvin the fly starts at $(0,0).$ Each step, Marvin moves one unit right or one unit up. He is trying to get to the point $(5,7)$. However, at $(4,3)$ there is a frog that will eat him if he goes through that point. In how many ways can Marvin reach $(5,7)$? read more ..

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Sarvajit May 21, 2020

441

help

Five CDs are placed in five cases at random. What is the probability that exactly two of the CDs are in the right cases?

Guest May 21, 2020

744

+39

Let DE be the vector with initial point D(8, 6) and terminal point E(–1, 5). Write De as a linear combination of the vectors iand j.

Let DE be the vector with initial point D(8, 6) and terminal point E(–1, 5). Write De as a linear combination of the vectors iand j.

9i + j
14i + 4j read more ..

Summertastic101 May 21, 2020

-1

625

+16

Math Question. Need help.

1. The state of Ohio conducted COVID19 tests on 107,109 people, and 14,581 tested positive. (6 points) A. What is 𝑝̂ for the number who tested positive (round to the nearest hundredth of a percent)?

B. Based on the testing results, read more ..

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VanillaVi May 21, 2020

573

help

Let a and b be the solutions to 2x^2 - 7x + 13 = 0. Find 1/a + 1/b.

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Guest May 21, 2020

681

+114

help pls.. again!

hey guys. is (x+y)^2 the same as x^2 + y^2? thanks!

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andrewstanells May 21, 2020

1575

+39

Find the projection of u = <–6, –7> onto v = <1, 1>.

Find the projection of u = <–6, –7> onto v = <1, 1>.

A. < 13/2, -13/2>
B. <39, 91/2>read more ..

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Summertastic101 May 21, 2020

All Questions ⁺⁰238403 Questions

Does anybody know the answer to this?

help

helppppp!!!!!

Equation Question

help plsss

help

please help

It's my birthday today!

help

please help

What is the slope of the line described by the equation below?

The volume of a cone is 16 pi cubic inches. Its height is 12 inches. What is the radius of the cone?

ga ga 3000

help

I am confused

plz help asap im really confused

help

Combinations

help

Let DE be the vector with initial point D(8, 6) and terminal point E(–1, 5). Write De as a linear combination of the vectors iand j.

Math Question. Need help.

help

help pls.. again!

Find the projection of u = <–6, –7> onto v = <1, 1>.

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