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Post New Question
All Questions
+0
230864 Questions
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695
1
A collection of nickels, dimes, and quarters is worth 5.30.
A collection of nickels, dimes, and quarters is worth 5.30. There are two more dimes than nickels and four more quarters than dimes. How many quarters were in the collection?
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Guest
Jan 16, 2019
0
2042
4
help
Mary has six cards whose front sides show the numbers 1,2,3,4,5and 6 . She turns the cards face-down, shuffles the cards until their order is random, then pulls the top two cards off the deck. What is the probability that at least one of those
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CPhill
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Guest
Jan 16, 2019
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1036
2
+63
Piecewise functions question
Let
Find k(x) such that f is its own inverse.
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vindou
Jan 16, 2019
0
604
3
help
Meyer rolls two fair, ordinary dice with the numbers on their sides. What is the probability that at least one of the dice shows a square number?
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Guest
Jan 16, 2019
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678
0
+322
Calculus
just started calc so get ready for some calculus questions
off-topic
Ruublrr
Jan 16, 2019
0
1555
2
Trig help pls
A regular hexagon has vertices at $1-i, 0, a, b, c, d$ clockwise in that order, as in the picture below:
Then what is ?
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Guest
Jan 16, 2019
+1
890
10
+62
Complementary Counting Challenge:
There is an n by n square with n^2 unit squares. How many ways can we put numbers from 1 to n^2 on the grid such that the numbers from left to right and top to bottom go from least to greatest?
What if the grid is a n by n by n Cube?
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TwentyFour
Jan 16, 2019
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607
3
Equation
I really need help with this problem!
While on a walk in the country, you pass a field full of horses and chickens. After a quick count, you determine there are 3232 heads and 9090 feet in the field. How many of each animal are there?
read more ..
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Guest
Jan 16, 2019
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2583
1
15 liters increased by 60% is how many liters
15 liters increased by 60% is how many liters
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Guest
Jan 16, 2019
0
682
3
please help!
In terms of pi, what is the area of the circle defined by the equation 2x^2 + 2y^2 + 10x - 6y - 18 = 0?
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Guest
Jan 16, 2019
Jan 15, 2019
0
797
2
+257
th1b prob4
Geometric proofs..... I have no experience with this, help please if you can.
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SydSu22
Jan 15, 2019
0
516
1
+4
Find F and G
Find F and g
Omi67
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Botto
Jan 15, 2019
0
1
592
2
In the triangle formed by points A(-1,7), B(1,2), and C(7,6), what is the slope of the line that goes through point A and bisects BC?
In the triangle formed by points A(-1,7), B(1,2), and C(7,6), what is the slope of the line that goes through point A and bisects BC?
asdf335
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Guest
Jan 15, 2019
0
599
1
deviations
Scores on a college entrance examination are normally distributed with a mean of 500 and a standard deviation of 100. What percent of people who write this exam obtain scores between 425 and 575?
a. 27.34%
b. 45.32%
c. 54.68%
d. 77.34%
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Guest
Jan 15, 2019
0
760
1
math help
https://snag.gy/9hbUSc.jpg
A note is played on a flute. Which of the parts of the wave would be affected by playing a higher pitch note and how?
A) D, the frequency would get higher.
B) C, the wavelength would get shorter.
C) C and D, the amplitude
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Guest
Jan 15, 2019
0
515
2
Does anyone know what 'x=' for the equation
Does anyone know what "x=" for the equation
2/3(3x+9)=-2(2x+6)
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Guest
Jan 15, 2019
0
911
2
Can anyone do this?
The same eight people sit in a certain church pew every week, but not always in the same order. Every week, each person hugs the people immediately to his or her left and right. How many weeks does it take (at a minimum) for every pair of people to hug
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Guest
Jan 15, 2019
+2
890
2
+146
Help me
Will someone please explain the basics of algebra?
off-topic
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FreddieMercury
Jan 15, 2019
+1
1010
2
How many terms are in the arithmetic sequence
How many terms are in the arithmetic sequence 5, 1, −3, . . . , −111?
Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference.
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Guest
Jan 15, 2019
0
2405
1
Tom throws a ball into the air. The ball travels on a parabolic path represented by the equation h = -8t 2 + 40t, where h represen
Tom throws a ball into the air. The ball travels on a parabolic path represented by the equation h = -8t 2 + 40t, where h represents the height of the ball above the ground and t represents the time in seconds. The
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Guest
Jan 15, 2019
0
471
1
I need help please help?
I need help please help?
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Guest
Jan 15, 2019
0
478
1
I need help with a problem can someone help me?
I need help with a problem can someone help me?
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Guest
Jan 15, 2019
+1
1
583
1
Please Help Me!
A suitcase lock has 3 dials with the digits 0,1,2,3....,9 on each. How many different settings are possible if all three digits have to be different?
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Guest
Jan 15, 2019
+1
1
1259
2
Math
Ellen wants to purchase a book that is regularly priced at $18. The book is discounted 15%. She also needs to pay a 6% sales tax on the discounted price.
What is the total amount Ellen will pay for the book?
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Guest
Jan 15, 2019
+1
464
1
my homework question pls help
a group of respiring woodlice produce 4.37cm^3 of CO2 in 1 hour. Calculate their mean rate of CO2 production per minute. Give your answer to 2 significant figures
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Guest
Jan 15, 2019
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