All Questions ⁺⁰237779 Questions

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89

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Riddle 23

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

off-topic

history Aug 8, 2023

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89

3

Please help

Find all real numbers $x$ such that $3x - 7 \le 5x +9$. Give your answer as an interval

Guest Aug 8, 2023

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134

0

help me

In regular octagon , sides and are extended to meet at point . If the side length of the octagon is 1, then what is the length ?

Guest Aug 8, 2023

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117

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triangle question

In triangle $ABC$, the side lengths are $AB = 6,$ $BC = 8,$ and $CA = 8.$ If $AD$ is an angle bisector such that $D$ is on $BC,$ then find the value of $AD^2.$

Guest Aug 8, 2023

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87

3

Line L, given by the graph of y=5x+6, intersects the graph of y=x^2 at two points P=(a,b) and Q=(c,d), such that a

Line L, given by the graph of y=5x+6, intersects the graph of y=x^2 at two points P=(a,b) and Q=(c,d), such that a

Guest Aug 8, 2023

+1

100

4

+58

Geometry problem, Please Help!

The vertices of triangle ABC lie on the sides of equilateral triangle DEF, as shown below in the image. If CD = 5, CE = BD = 2, and angle ACB = 90 degrees, then find AE. read more ..

choutowne Aug 8, 2023

-2

120

2

+818

Pentagon

Can someone draw a diagram for this? It doesn't seem possible.
All sides of the convex pentagon $ABCDE$ are of equal length, and $\angle A = \angle C = 90^\circ$. What is the degree measure of $\angle E$?

maximum Aug 8, 2023

-2

79

2

+818

Factoring

The expression $6x^2 + 17x + 5 - 5x^2 - 11x$ can be written in the form $(Ax+1)(Bx+5)$ where $A$ and $B$ are integers. What is the value of $AB$?

maximum Aug 8, 2023

+1

84

4

+58

Need help with geometry problem!

Triangle XYZ is equilateral. Points Y and Z lie on a circle centered at O, such that X is the circumcenter of triangle OYZ, and X lies inside triangle OYZ. If the area of the circle is 48pi, then find the area of triangle XYZ.
I am not sure what read more ..

choutowne Aug 8, 2023

Aug 7, 2023

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135

1

quadratic

The graph of the equation $y=ax^2+bx-6$ is completely below the $x$-axis. If $a^2=4$, what is the largest possible integral value of $b$?

Guest Aug 7, 2023

-3

102

3

+818

Help me plz

For a particular peculiar pair of dice, the probabilities of rolling $1,$ $2,$ $3,$ $4,$ $5,$ and $6$ on each die are in the ratio $1:2:3:4:5:6$. What is the probability of rolling a total of $2$ on the two dice?

ElectricPavlov ●●●

maximum Aug 7, 2023

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81

4

+22

Units Digit

Find the units digit of 13^19 *19 ^13
I already tried an answer but got it wrong. Can someone please explain how to do this problem?

plaintainmountain ●●●●

LandofLe Aug 7, 2023

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111

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+818

Problem with square

Inside a square with side length $10$, two congruent equilateral triangles are drawn such that they share one side and each has one vertex on a vertex of the square. What is the total area of the two equilateral triangles? read more ..

maximum Aug 7, 2023

-1

77

4

+1348

probability question

Help I'm so bad at probability
When two fair $6$-sided dice are tossed, the numbers $a$ and $b$ are obtained. What is the probability that the two digit number $ab$ (where $a$ and $b$ are digits) and $a$ and $b$ are all divisible by read more ..

sandwich Aug 7, 2023

-1

116

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+1348

help probability

Ten $6$-sided dice are rolled. What is the probability that exactly three of the dice show an odd number? Express your answer as a decimal rounded to the nearest thousandth.

sandwich Aug 7, 2023

-1

86

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+1348

Inequality

Help can someone explain this. I think the answer is no real numbers, but that's wrong.
Solve the inequality
\[\frac{x^2 - 25}{x + 5} < x + 5.\]

sandwich Aug 7, 2023

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92

1

+1348

Domain

Help needed urgent
Find the domain of $\frac{x^2 + 10x + 21}{x^2 + 4x + 5} + \sqrt{x - 4}$. (Express your answer using interval notation.)

sandwich Aug 7, 2023

+1

31

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+762

Riddle 22

What has many keys, but can't even open a single door?

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history Aug 7, 2023

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127

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HELP ASAP

1. Solve for x:
2. Let g(x) be a function piecewise defined as . If a is negative, find a so that g(g(g(10.5)))=g(g(g(a))).

Guest Aug 7, 2023

-1

105

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+818

help with perimeter

Help I need the perimeter and Im suck
In the diagram, what is the perimeter of polygon $PQRST$?

maximum Aug 7, 2023

+18

8

35

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+130514

Blocked Posts

I just wrote to the site manager to let him know that this is happening....I'll try to "unblock" as many posts as possible ( but realize that I can't stay on here all day )
CPhi read more ..

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CPhill Aug 7, 2023

+1

57

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+307

Kinda off topic

Is anyone having the same issue as I am where all my posts get flagged for moderation?

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Imcool Aug 7, 2023

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45

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+818

Circles

How do you solve this?
A circle has an area of $M\text{ cm}^2$ and a circumference of $N\text{ cm}$. If $\dfrac{M}{N}=\dfrac{1}{2}$, what is the radius of the circle, in cm?

maximum Aug 7, 2023

0

53

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+32

help

What is the units digit of the sum of the nine terms of the sequence 1! + 1, 2! + 2, 3! + 3, ..., 8! + 8, 9! + 9?

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jonathanldong Aug 7, 2023

-1

51

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+818

Equation

Find the product of all real values of $r$ for which $\frac{1}{2x}=\frac{r-x}{2}$ has exactly one real solution.

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maximum Aug 7, 2023

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