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Post New Question
All Questions
+0
230566 Questions
-1
390
4
Dmdmd
Artut had some marbles. 1/4 of the marbles were blue, 3/12 of the marbles were red, and the rest were yellow. There were 14 more red marbles than yellow marbles. How many marbles did Ann have altogether?
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Guest
May 31, 2021
+1
426
1
Algebra
Let u and v be the solutions to 3x^2 + 5x + 7 = 0. Find 1/u + 1/v.
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Guest
May 31, 2021
0
427
3
Complex Numbers
if z is a complex number such that
what is the value of ?
read more ..
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Guest
May 31, 2021
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361
1
Algebra
The roots of 7x^2 + x - 5 = 0 are a and b. Compute (a + 4)(b + 4)/(ab).
Derekshakk
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Guest
May 31, 2021
0
346
1
Counting question
How many ways are there to put 6 balls in 3 boxes if the balls are distinguishable, and the boxes are distinguishable?
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Guest
May 31, 2021
0
472
3
+311
A Dice Problem
Two 6-sided dice, one red and one green, are rolled. What is the probability that the red die shows a 2 and the green die shows a 5?
Thanks!
- WillBill
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Derekshakk
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WillBillDillPickle
May 31, 2021
0
326
1
MATHLMFAO
Pee's bag contains 7 times as many coins as Poo's bag. If Pee gives 12 coins to Poo, the two boys will have the same number of coins. What is the total number of coins?
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Guest
May 31, 2021
+1
458
2
+62
help :c
Ben twice chooses a random integer between 1 and 50, inclusive (and he may choose the same integer both times). What is the probability that at least one of the numbers Ben chooses is a multiple of 3?
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Derekshakk
May 31, 2021
0
262
1
Algebra problem
Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 + 2xy.
For example, to enter the solutions (2,4) and (-3,9), you would enter "(2,4),(-3,9)" (without the quotation marks).
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Guest
May 31, 2021
0
335
1
Geometry
The altitude to the hypotenuse of a triangle with angles of 30 and 60 degrees is 3 units. What is the hypotenuse of the triangle, in units? Express your answer in simplest radical form.
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Guest
May 31, 2021
0
278
1
vector geo problem
Arnold is standing at point P in triangle ABC. He moves halfway towards vertex A. He then moves halfway towards vertex B. Finally, he moves halfway towards vertex C. After these three steps, it turns out that he is back at point P. Then \[\overrightarrow{P}
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Guest
May 31, 2021
0
484
3
geometry
(1) In triangle JKL, we have JK = JL = 25 and KL = 30. Find the area.
(2) In triangle ABC, we have AB = 5, AC = 12, BC = 13. Find the circumradius.
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Guest
May 31, 2021
0
215
0
Function problem
For 0 <= x <= 1, let f(x) = max(x^2, (1 - x)^2). FInd the minimum value of f(x). For real numbers a, b, c ..., max(a, b, c, ...) denotes the maximum (or largest) number among a, b, c ....
Guest
May 31, 2021
0
505
4
+357
I'm having a lot of trouble with this one.
What would I get if I get if I added powdered root of asphodel to an infusion of wormwood?
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Varxaax
May 31, 2021
0
298
1
Function problem
Let
f(x) = -x + 3 if x <= 0
f(x) = -2x - 5 if x > 0
read more ..
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Guest
May 31, 2021
+1
327
1
help geometry
In triangle XYZ, angle Y = 45ΒΊ and angle Z = 60ΒΊ. If XY = 4, then what is XZ?
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Guest
May 31, 2021
-1
428
3
Factorize
πππ+ππππβπππβπππ
textot
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Guest
May 31, 2021
0
186
0
Calculus
Find k such that f(x) = {kx(1β x)? for 0 < x<1 otherwise probability density function for a continuous random variable X.
Find E(X).
Find V(X).
Guest
May 31, 2021
0
423
3
help 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.
read more ..
Varxaax
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Guest
May 31, 2021
0
372
1
Word problem
An octopus has 8 tentacles and 1 head. A jellyfish has 20 tentacles and no head. A cow has 4 legs and 1 head. Farmer Brown, who only raises octopi, jellyfish and cows on her farm, has animals with a total of 17 heads, 196 tentacles and 40 legs. How many
read more ..
ElectricPavlov
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Guest
May 31, 2021
0
316
1
Algebra
Given (14x + 22)/(x + 2) = -3x - 1, compute the sum of all the possible values of x. Express your answer as a fraction.
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Guest
May 31, 2021
0
326
1
Parabola question
The vertex of a parabola is at (12,-4), and its axis of symmetry is vertical. One of the x-intercepts is at (-15,0). What is the x-coordinate of the other x-intercept?
ElectricPavlov
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Guest
May 31, 2021
0
397
1
Help counting
In a certain Algebra 2 class of 23 students, 11 of them play basketball and 13 of them play baseball. There are 6 students who play neither sport. What is the probability that a student chosen randomly from the class plays both basketball and baseball?
read more ..
Varxaax
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Guest
May 31, 2021
0
420
3
Percents
Kai and Jordan had 300 marbles altogether. Kai gave away 25% fewer marbles than Jordan. Jordan was left with 50% as many as the number of marbles he gave away. Kai had 75% of the total number of marbles the boy left in the end. How many marbles did Kai
read more ..
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Guest
May 31, 2021
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