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All Questions
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230706 Questions
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45
2
I NEED HALP
Find the coefficient of $u^2 v^9$ in the expansion of $(2u - 3v^3)^5.$
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Guest
Jun 7, 2023
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54
1
plz help
Find the number of ways of arranging the numbers 1,2 ,3, 4, 5, 6, 7, 8, 9 in a row so that the product of any two adjacent numbers is even.
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Guest
Jun 7, 2023
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50
1
I could really use some help
In triangle ABC, AB=AC and angle A is equal to 36. Point D is on AC so that BD bisects angle ABC.
(a) Prove that BC = BD = AD.
(b) Let x=BC and let y=CD. Using similar triangles BCD and ABC, write an equation involving
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Guest
Jun 7, 2023
0
49
2
altitudes
I need help with altitudes
Triangle ABC has altitudes AD, BE, and CF. If AD = 12, BE = 12, and CF is a positive integer, then find the largest possible value of CF.
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Guest
Jun 7, 2023
Jun 6, 2023
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49
0
bisectors
In triangle PQR, let X be the intersection of the angle bisector of angle P with side QR, and let Y be the foot of the perpendicular from X to line PR. If PQ = 9, QR = 9, and PR = 9, then compute the length of XY.
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Guest
Jun 6, 2023
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57
0
need help plz
Right triangle XYZ has legs of length XY = 12 and YZ = 6. Point D is chosen at random within the triangle XYZ. What is the probability that the area of triangle XYD is at most 20?
Guest
Jun 6, 2023
0
56
1
rates
I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 50 miles per hour instead, then I would have arrived 45 minutes later. How many miles did I drive?
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Guest
Jun 6, 2023
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55
1
Tree Diagram probabilities
There is a bag filled with 3 blue and 4 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting exactly 1
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Guest
Jun 6, 2023
0
51
1
Square roots
Find all values of x such that \sqrt{4x^2} + \sqrt{x^2} = 6 + 3x.
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Guest
Jun 6, 2023
0
55
9
Please help.
I have been trying this problem for the past 2 days. What I did so far was calcualte that 27/x=1/4. But when I simplfiy and put in the answer it is wrong.
Each triangle shown is equilateral. What is the probability that a point chosen
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Guest
Jun 6, 2023
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45
0
system
The system of equations
\[\frac{xy}{x + y} = 1, \quad \frac{xz}{x + z} = 2, \quad \frac{yz}{y + z} = 1\]
has exactly one solution. What is $z$ in this solution?
Guest
Jun 6, 2023
+1
53
2
+1124
LCD vs NO LCD
Hi friends,
I understand if I really seem very daft for asking this question, but I'm going to ask anyway...if we have this:
we get the LCD, which is 6
so we have:
read more ..
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juriemagic
Jun 6, 2023
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54
0
ratios
In Linguistics 101, the ratio of the number of juniors to the number of seniors is 3:2. When six more juniors join the class, and one senior drops the class, the ratio of the number of juniors to the number of seniors becomes 2:3. How many
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Guest
Jun 6, 2023
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53
2
help
Function g is defined as follows: This function has an inverse. what is
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Guest
Jun 6, 2023
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57
1
+4
advanced quadratics parabola help
Points and are on parabola , , and the origin is the midpoint of . Find the square of the length of .
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dumbphoenix
Jun 6, 2023
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56
1
percent
In a store window, there was a box of berries having a total weight of 200 kg. The berries were 99% water, by weight. After two days in the sun, the water content of the berries was only 90%, by weight. What was the total weight of
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Guest
Jun 6, 2023
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49
0
proportion
Each gallon of paint covers 200 square feet. I have to paint one side of a wall that is 15 meters tall and meters long. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons I can buy
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Guest
Jun 6, 2023
0
49
0
Percent
Our badminton team has finished 75% of its season. So far, we have won 20% of the games we played. What percent of the remainder of our games must we win in order to finish the season with the same number of wins as losses?
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Guest
Jun 6, 2023
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46
1
help asap
Function $C$ is defined on positive integers as follows:
Find all $n$ such that $C^{3}(n) = 16
\
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Guest
Jun 6, 2023
0
61
1
help solve
Alice and Bob each have a certain amount of money. If Alice receives n dollars from Bob, then she will have 4 times as much money as Bob. If, on the other hand, she gives n dollars to Bob, then she will have 8 times as much money as Bob. If neither
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Guest
Jun 6, 2023
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47
1
The equation of the line passing through (1,11) and (4,5) can be expressed in the form x/a + y/b = 1Find a
The equation of the line passing through (1,11) and (4,5) can be expressed in the form x/a + y/b = 1 Find a
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Guest
Jun 6, 2023
0
44
0
proportion
I have to paint one side of a wall. The wall is 12 meters tall and 120 meters long. Each gallon of paint covers 150 square feet. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons
read more ..
Guest
Jun 6, 2023
0
45
0
proportion
All members of our painting team paint at the same rate. If 20 members can paint a 2000 square foot wall in 40 minutes, then how long would it take the 20 members to paint a 6000 square foot wall, in minutes?
Guest
Jun 6, 2023
0
43
1
Which equation correctly rewrites the formula to solve for h?
This is the formula for the volume of a right square pyramid, where a is the side length of the base and h is the height:
v=1/3a2h.
Which equation correctly rewrites the formula to solve for h?
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Guest
Jun 6, 2023
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