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All Questions
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231042 Questions
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246
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help counting
It is a beautiful day at the beach and ten beach volleyball players have shown up at the volleyball courts. Each two-person volleyball team should consist of a setter and a spiker. Five of the players prefer to be a spiker, and five of the players prefer
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Guest
Aug 3, 2021
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236
1
Polygon
The exterior angles of a k-sided polygon form an arithmetic sequence. The smallest and largest interior angles of the polygon are 136 degrees and 145 degrees. What is k?
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Guest
Aug 3, 2021
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297
1
need help
What is the smallest integer value of c such that the function f(x) = (x^2 + 1)/(x^2 + 1 + c) has a domain of all real numbers?
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Guest
Aug 3, 2021
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304
1
geometry
Find all integers n such that when the clock strikes n o'clock, the acute angle between the hour and minute hands is 90 degrees. Enter your answer as a comma-separated list.
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Guest
Aug 3, 2021
Aug 2, 2021
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307
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Domain
There are three real numbers that are not in the domain of
f(x) = (x - 1)(x - 2)(x - 3)/(x(x - 1)(x - 2))
What is the sum of those three numbers?
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Guest
Aug 2, 2021
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204
0
help
in acute triangle abc, point d lies on bc such that ad is perpendicular to bc. denote by m and n the midpoints of sides ab and ac. explain why mn divides ad in half. use sss similarity to prove that triangles dmn and abc are similar.
Guest
Aug 2, 2021
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302
1
Trig
In triangle BCD, angle C = 90 degrees, CD = 3, and BD = sqrt(14) . What is tan B?
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Guest
Aug 2, 2021
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306
1
Coordinates
The vertices of a triangle are the points of intersection of the line y = -x-5, the line x=2, and y = -1/5x+13/5. Find an equation of the circle passing through all three vertices.
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Guest
Aug 2, 2021
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291
1
Counting
There are 97 students in South High School. South High School offers only Chinese and Spanish. There are 5 more students in Chinese than in Spanish, and every student takes at least one language. If 48 students take only Spanish, then how many take both
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Guest
Aug 2, 2021
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205
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help geometry
in triangle abc, points m and n are the midpoints of sides ab and ac, respectively. segments bn and cm intersect at p. find the ratios
bp/pn and cp/pm.
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Guest
Aug 2, 2021
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508
1
A stick has a length of $5$ units. The stick is then broken at two points, chosen at random. What is the probability that all three resultin
A stick has a length of $5$ units. The stick is then broken at two points, chosen at random. What is the probability that all three resulting pieces are shorter than $2$ units?
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Guest
Aug 2, 2021
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306
1
Solve
Solve for x and y:
2x - 3y = -3.2 - 0.2x + 0.1y
x = 0.6x - y + 8.8 - 0.5*x
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Guest
Aug 2, 2021
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239
0
Quadratic
Let p(x) be a monic, quartic polynomial such that p(1) = 3, p(3) = 11, and p(5) = 29. Find p(-2) + 7p(6).
Guest
Aug 2, 2021
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284
1
Coordinates
Find y if the point (-6,y) is on the line that passes through (-1,7) and $(3,-5)$ .
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Guest
Aug 2, 2021
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348
1
Number Theory
How many zeros are at the end of (100!)(200!)(300!)(400!) when multiplied out?
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Guest
Aug 2, 2021
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280
1
help
What is the equation of the line that passes through the point (5,1) and has a slope of 6/5?
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Guest
Aug 2, 2021
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291
1
Geometry
Points A(0,0), B(9,6) and C(6,12) are vertices of triangle ABC. Point D is on segment AB such that 3(AD) = DB, point E is on segment BC such that 3(BE) = EC and point F is on segment CA such that 4(CF) = FA.
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Guest
Aug 2, 2021
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192
0
gEoMeTrY
In triangle abc points d and e lie on the sides ab and ac respectively given that bd = 8 ad = 2 ae = 3 ce = 12 de = 4. let k and l be the feet of the perpendiculars from a onto de and bc, respectively
explain why points a, k, and
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Guest
Aug 2, 2021
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204
0
help needed quickly
Find the ordered triplet (x,y,z) for the following system of equations:
x + 3y + 2z = 1
-3x + y + 5z = 10
-2x + 3y + z = 7
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Guest
Aug 2, 2021
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404
1
please help :)
The diagonal of a rectangle is 15 cm, and the perimeter is 38 cm. What is the area?
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Guest
Aug 2, 2021
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293
1
Counting
How many three digit odd numbers can be formed from the digits 1, 2, 3, 4, 5, 6, if no digits are to be repeated?
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Guest
Aug 2, 2021
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366
4
The answer is 132 but when I ask in gauthmath, they say it’s 110
Alvin spent 2/5 of his money and an additional $6 on text books and 1/3 of the remaining money and an additional $8 on comics. He had $32 left. How much money did Alvin have at first?
you heard the title. The answer is supposed
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Guest
Aug 2, 2021
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411
1
the hardest question
5 and a half pounds of chocolate chip cookies are to be packed into bags each of which holds a third of a pound. How many bags will be filled and how much will be left for the packer to munch on?
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Guest
Aug 2, 2021
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