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Post New Question
All Questions
+0
230451 Questions
0
634
1
Calling All Users
How many integers satisfy the inequality $x(3x-4) \le \frac{6x^2 - 3x + 5}{10}$?
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Guest
Mar 15, 2020
0
664
1
please help
A store is having a sale on jelly beans and trail mix. For 6 pounds of jelly beans and 2 pounds of trail mix, the total cost is $20. For 3 pounds of jelly beans and 5 pounds of trail mix, the total cost is $23. Find the cost for each pound of jelly beans
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Guest
Mar 15, 2020
0
382
1
help plz
Find the number of ways of distributing 4 identical balls among 4 identical boxes.
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Guest
Mar 15, 2020
0
469
2
A store has four open checkout stands. Find the number of different ways that six customers can line up at these stands.
A store has four open checkout stands. Find the number of different ways that six customers can line up at these stands.
The way I did this (stars and bars):
Since there are 4 stands, I need to insert 3 dividers among these
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Guest
Mar 15, 2020
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322
1
help
A coin is tossed 10 times, and at least 8 of the tosses were heads. How many different sequences of tosses could there have been?
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Guest
Mar 15, 2020
0
320
1
help
In a group of 120 farmers, 65 grow maize and 75 grow cassava. Of these 35 grow both maize and cassava. Find the number of farmers who grow only maize.
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Guest
Mar 15, 2020
0
860
4
Help Please! Find the residue of $182\cdot 12 - 15\cdot 7 + 3\pmod{14}$.
Please Help!
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Guest
Mar 15, 2020
0
324
1
Calling All Users
What is the value of $b+c$ if $x^2+bx+c>0$ only when $x\in (-\infty, -2)\cup(3,\infty)$?
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Guest
Mar 15, 2020
0
1991
3
help
Bob the builder is making 480 kg of concrete mix. Concrete is made by mixing cement, sand and gravel in the ratio 1 : 3 : 4 how much sand does he need ?
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Guest
Mar 15, 2020
0
493
2
+177
May u please help
How many ways are there to put 9 differently colored beads on a 3x3 grid if the purple bead and the green bead cannot be adjacent (either horizontally, vertically, or diagonally), and rotations and reflections of the grid are considered the same?
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TheGreatestOofman
Mar 15, 2020
+3
2
791
3
+306
Team A is playing against Team B in a soccer tournament. The first team to win 3 games wins the tournament.
Team A is playing against Team B in a soccer tournament. The first team to win 3 games wins the tournament. Team A has a probability of 2/3 of winning each game. What is the probability that Team A wins the tournament?
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mathmathj28
Mar 15, 2020
+2
658
1
+306
Emma has a bag that contains 6 nickels and 5 pennies.
Emma has a bag that contains 6 nickels and 5 pennies. She draws coins from the bag at random, without replacement. What is the probability that after drawing 4 coins, she has removed at most 2 pennies from the bag?
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mathmathj28
Mar 15, 2020
+1
1247
3
+306
We define a bow-tie quadrilateral as a quadrilateral where two sides cross each other. Seven distinct points are chosen on a circle. We draw
We define a bow-tie quadrilateral as a quadrilateral where two sides cross each other. Seven distinct points are chosen on a circle. We draw all =21 chords that connect two of these points. Four of these 21 chords are selected at random.
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mathmathj28
Mar 15, 2020
+3
1507
8
+306
How many 10-digit numbers are there, such that the sum of the digits is divisible by 5?
How many 10-digit numbers are there, such that the sum of the digits is divisible by 5?
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mathmathj28
Mar 15, 2020
0
965
1
+16
Help
Let r1, r2, r3 and r4 be the roots of x^4 - 2x^3 - 5x^2 + 4x - 1 = 0
Find the monic polynomial , in x, whose roots are 1/r1, 1/r2, 1/r3 and 1/r4
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Thecarl69
Mar 15, 2020
0
368
1
please help
The area of triangle STU is 45. Points P and Q are on sides ST and SU, respecitvely, such that TU is parallel to PQ. If SP = 2PT, what is the area of triangle SPQ?
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Guest
Mar 15, 2020
0
310
1
Halp!!!!
Suppose that
What is the maximum value of |a-n|?
Please help ASAP
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Guest
Mar 15, 2020
0
444
0
help!!
ABCD is a trapezoid with AB parallel to CD. The diagonals of the trapezoid intersect and point E. If AB = 4, CD = 8, and the height of the trapezoid is 9, then what is the area in sqaure units of triangle ABE?
Guest
Mar 15, 2020
0
651
2
please help
Complete the square to transform the expression x^2 + 4x + 2 into the form a(x - h)^2 + k.
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Guest
Mar 15, 2020
0
1930
1
+383
HELPP
A boy has the following seven coins in his pocket: $2$ pennies, $2$ nickels, $2$ dimes, and $1$ quarter. He takes out two coins, records the sum of their values, and then puts them back with the other coins. He continues to take out two coins, record the
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Paresh
Mar 15, 2020
0
848
1
Help!
If $3+a=4-b$ and $4+b=7+a$, what is $3-a$?
off-topic
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Guest
Mar 15, 2020
0
431
1
help!
The first term of an arithmetic sequence is 5 . the 12 th term is 137 . what is the common difference of the arithmetic sequence ?
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Guest
Mar 15, 2020
0
1243
1
COUNTING LISTS
How many four-digit integers are less than 8000 and greater than 2000?
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Guest
Mar 15, 2020
0
436
1
parabola
Write the equation of the parabola in vertex form. Vertex (2,1), point (3, -4)
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Guest
Mar 15, 2020
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