All Questions ⁺⁰237750 Questions

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132

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I NEED HALP

Find the coefficient of $u^2 v^9$ in the expansion of $(2u - 3v^3)^5.$

Guest Jun 7, 2023

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122

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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.

Guest Jun 7, 2023

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104

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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 read more ..

Guest Jun 7, 2023

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132

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.

Guest Jun 7, 2023

Jun 6, 2023

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129

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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. read more ..

Guest Jun 6, 2023

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134

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

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137

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?

Guest Jun 6, 2023

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141

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 read more ..

Guest Jun 6, 2023

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147

1

Square roots

Find all values of x such that \sqrt{4x^2} + \sqrt{x^2} = 6 + 3x.

Guest Jun 6, 2023

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128

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 read more ..

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Guest Jun 6, 2023

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130

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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

112

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 ..

juriemagic Jun 6, 2023

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131

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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 read more ..

Guest Jun 6, 2023

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145

2

help

Function g is defined as follows: This function has an inverse. what is

Guest Jun 6, 2023

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147

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 .

dumbphoenix Jun 6, 2023

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148

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 read more ..

Guest Jun 6, 2023

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125

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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 read more ..

Guest Jun 6, 2023

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131

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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? read more ..

Guest Jun 6, 2023

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140

1

help asap

Function $C$ is defined on positive integers as follows:
Find all $n$ such that $C^{3}(n) = 16
\

Guest Jun 6, 2023

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126

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 read more ..

Guest Jun 6, 2023

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128

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

Guest Jun 6, 2023

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121

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

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129

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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

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86

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?

Guest Jun 6, 2023

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