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All Questions
+0
237668 Questions
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418
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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
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Guest
May 21, 2020
0
714
1
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
+1
664
1
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
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Guest
May 21, 2020
0
778
2
+288
Equation Question
Find all real solutions for in
-----Thanks!
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madyl
May 21, 2020
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404
0
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
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off-topic
Guest
May 21, 2020
-1
544
1
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
0
592
5
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
807
12
+773
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
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543
2
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.
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Guest
May 21, 2020
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495
1
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
0
736
1
+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
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fatimahalnabulsi55
May 21, 2020
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956
2
The volume of a cone is 16 pi cubic inches. Its height is 12 inches. What is the radius of the cone?
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
554
3
ga ga 3000
ga ga ga ga
off-topic
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Guest
May 21, 2020
0
440
0
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
726
6
+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
0
722
5
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
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Guest
May 21, 2020
0
560
1
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
0
812
5
+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 $(5,7)$?
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Sarvajit
May 21, 2020
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402
0
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
0
702
0
+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
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Summertastic101
May 21, 2020
-1
577
1
+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,
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VanillaVi
May 21, 2020
0
522
1
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
0
634
2
+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
0
1531
2
+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>
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Summertastic101
May 21, 2020
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