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All Questions
^{+0}
233392 Questions
0
49
0
+1859
coordinate question
Line $\ell_1$ is horizontal and passes through $(2,-8)$. Line $\ell_2$ is vertical and passes through $(-7,5)$. Line $\ell_3$ passes through $(-1,5)$ and $(6,-2)$. Line $\ell_4$ passes through $(13,-5)$ and $(7,-6)$. Find the point
read more ..
tomtom
Oct 5, 2023
Oct 4, 2023
0
22
1
+817
help plz with inequality
Find all $x$ such that both $2x$ and $3x-7$ are in the interval $(-1,12)$.
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maximum
Oct 4, 2023
0
26
0
+817
help help
Find all $x$ such that $1-3x < x + 8 \le 7-x$. Give your answer in interval notation.
maximum
Oct 4, 2023
0
30
1
+817
need help plz
Find all $z$ such that neither $2+z-5z$ nor $2-z+8z$ is in the interval $(-7,13]$. Express your answer as an interval or as a union of intervals.
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maximum
Oct 4, 2023
0
29
1
+817
inequality problem
Find all $w$ so that neither $-2(6+2w)\le -16 + 7w$ nor $-3w\ge 18 - 5w + 3$.
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maximum
Oct 4, 2023
0
21
2
+82
Probability & counting
Three adults and three children are to be seated at a circular table. In how many different ways can they be seated if each child must be next to two adults? (Two seatings are considered the same if one can be rotated to form the other.)
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xxyoohoo
Oct 4, 2023
0
28
1
+4
Help please
Let f be a function such that f(x+y) = x+f(y) for any 2 real numbers x and y. If f(0) = 2 then what is f(2012)
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Wbxsi5
Oct 4, 2023
0
42
0
+1347
help probability
A stick is broken at two points, chosen at random. If the length of the stick is 6 units, then what is the probability that all three resulting pieces are shorter than 2 units?
sandwich
Oct 4, 2023
0
26
0
+1347
help plz
I need help with probability.
A box contains 24 tiles. Each tile has certain properties:
Each tile is made of wood or plastic.
Each tile is red, yellow, or blue.
Each tile is a triangle, square, pentagon,
read more ..
sandwich
Oct 4, 2023
0
32
2
+82
CPHILL PLEASE HELP
Six children are each offered a single scoop of any of flavors of ice cream from the Combinatorial Creamery. In how many ways can each child choose a flavor for their scoop of ice cream so that some flavor of ice cream is selected by exactly
read more ..
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xxyoohoo
Oct 4, 2023
0
36
1
+1859
help counting
In how many ways can $4$ balls be placed in $8$ boxes if neither the balls nor the boxes are distinguishable?
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tomtom
Oct 4, 2023
0
21
0
+1859
counting problems
a) A baking club wants to form an executive committee. There are 12 people in the baking club, including Mark. In how many ways can the baking club form an executive committee with 2 people?
b) A baking club wants to form
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tomtom
Oct 4, 2023
0
34
2
+4
What is X ?
X squared, minus X = 1
what is X ?
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Funkinetk
Oct 4, 2023
0
24
1
+4
Inverse Trig Functions and Right Triangles
Find all angles 𝜃 between 0° and 180° satisfying the given equation. Round your answer to one decimal place.
tan(𝜃) = 9
Im cant figure out how to solve these types of problems.
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meisme
Oct 4, 2023
Oct 3, 2023
0
25
1
+4
aberga
Aaliyah is in the business of manufacturing phones. She must pay a daily fixed cost to rent the building and equipment, and also pays a cost per phone produced for materials and labor. Let CC represent the total cost, in dollars, of producing pp phones
read more ..
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dcrfrt
Oct 3, 2023
-1
28
1
+817
Plz help
Help I dont know this
Three adults and three children are to be seated at a circular table. In how many different ways can they be seated if each child must be next to at least one adult? (Two seatings are considered
read more ..
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maximum
Oct 3, 2023
0
38
1
+1859
palindromes
A palindrome is a number that is the same when read forwards and backwards, such as $43234$. Find the number of $4$-digit palindromes that are divisible by $13.$
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tomtom
Oct 3, 2023
0
18
1
+1859
choosing cards
A standard deck of cards has $52$ cards divided into $4$ suits, each of which has $13$ cards. Two of the suits ($\heartsuit$ and $\diamondsuit$, called 'hearts' and 'diamonds') are red, the other two ($\spadesuit$ and $\clubsuit$, called 'spades'
read more ..
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tomtom
Oct 3, 2023
0
33
0
+1859
polynomial roots
The equation $x^3 + 8x^2 - 4x + c = 6x^2 - 12x$ has three roots, one of which is the sum of the other two. What is $c$?
tomtom
Oct 3, 2023
0
31
0
+1859
help plz
Phoenix hiked the Rocky Path Trail last week. It took four days to complete the trip. The first two days she hiked a total of $22$ miles. The second and third days she averaged $28$ miles per day. The last two days she hiked a total of $20$ miles. The total
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tomtom
Oct 3, 2023
0
37
1
+1859
mod question
Given $m\geq 2$, denote by $b^{-1}$ the inverse of $b\pmod{m}$. That is, $b^{-1}$ is the residue for which $bb^{-1}\equiv 1\pmod{m}$. Sadie wonders if $(a+b)^{-1}$ is always congruent to $a^{-1}+b^{-1}$ (modulo $m$). She tries the example $a=2$, $b=3$,
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tomtom
Oct 3, 2023
0
35
1
+1859
pyramid question
A right pyramid has a square base. The area of each triangular face is one-third the area of the square face. If the total surface area of the pyramid is $432$ square units, then what is the volume of the pyramid in cubic units?
read more ..
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tomtom
Oct 3, 2023
Oct 2, 2023
0
39
0
+1859
inequality
Find all $u$ such that neither $2u$ nor $-2u + 7$ is in the interval $(-\infty,1)$.
tomtom
Oct 2, 2023
0
44
0
+1859
integers
How many integers $n$ satisfy $2\le|\frac{n}{7}-\frac15|\le8$?
tomtom
Oct 2, 2023
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