All Questions ⁺⁰230706 Questions

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35

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math

Guest Sep 8, 2023

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33

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ajuda

4x ao quadrado - 8 dividido por 2x+3

Guest Sep 8, 2023

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33

1

floor function

Find the number of positive integers ${}n$ that satisfy $\lfloor \sqrt{n} \rfloor + \lfloor \sqrt{4n} \rfloor = 5.$

Guest Sep 8, 2023

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33

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Inequalities

(1) Let a_1, a_2, a_3 be real numbers such that
|a_1 - a_2| + 2 |a_2 - a_3| + 3 |a_3 - a_1| = 1.
What is the largest possible value of |a_1 - a_2|?
(2) Let a_1, a_2, a_3, \dots, a_{10} be real numbers such that read more ..

Guest Sep 8, 2023

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31

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Math Business Economics

Let A, B, and C be sets in a universal set U. We are given n(U) = 44, n(A) = 18, n(B) = 27, n(C) = 22, n(A ∩ B) = 9, n(A ∩ C) = 8, n(B ∩ C) read more ..

Guest Sep 8, 2023

Sep 7, 2023

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23

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floor function

Find all values of $t$ such that $\lfloor t\rfloor = 3t + 4/5$. If you find more than one value, then list the values you find in increasing order, separated by commas.

Guest Sep 7, 2023

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23

3

Square root of Apple pie+green

Hi, my math teacher gave me a peice of paper that asked what the square root of apple pie+green÷(blue x 87)
i have no clue what this means...

Guest Sep 7, 2023

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30

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algebra question

Let
\[f(x) = \left\lfloor\frac{2 - 3x}{2x + 8}\right\rfloor.\]
Evaluate $f(1)+f(2) + f(3) + \dots + f(999)+f(1000).$ (This sum has $1000$ terms, one for the result when we input each integer from $1$ to $1000$ into ${}f$.)

Guest Sep 7, 2023

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+1791

plz help!

Quadratic are hard!
For what values of $j$ does the equation $(2x + 7)(x - 4) = -31 + jx$ have exactly one real solution? Express your answer as a list of numbers, separated by commas.

ElectricPavlov ●●●

tomtom Sep 7, 2023

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21

1

+1791

quadratic question

Help I dont know how to solve quadratic equation
Find the value of $v$ such that $\frac{-21-\sqrt{201}}{10}$ a root of $5x^2+21x+v = 0$.

tomtom Sep 7, 2023

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19

1

+1791

help Im stuck

I need help with quadratic equations!!
The quadratic equation $x^2+4mx+m = 2x - 6$ has exactly one real root. Find the positive value of $m$.

tomtom Sep 7, 2023

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+1347

altitudes in triangles

In triangle $ABC$, we have that $AB = AC,$ and $\overline{AD}$ is an altitude. Also, $E$ is a point on $\overline{AC}$ such that $\overline{BE} \perp \overline{AC}.$ If $BC = 12$ and the area of triangle $ABC$ is $180,$ what is the area of read more ..

sandwich Sep 7, 2023

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20

1

+1347

points in the plane

Let $A$, $B$, $C$, $D$, and $E$ be points in the plane such that:
* $D$ is on line $AE$ with $\overline{CD} \perp \overline{AE}$.
* $B$ is on line $CE$ with $\overline{AB} \perp \overline{CE}$.
* $AB = 4$, $BE = 3$, and $CE = 8$. read more ..

sandwich Sep 7, 2023

-1

30

1

+1347

altitudes of a triangle

In triangle $ABC,$ altitudes $\overline{AD}$ and $\overline{BE}$ intersect at $H$. If $\angle BAC = 40^\circ$ and $\angle ABC = 40^\circ$, then what is $\angle AHB$?

sandwich Sep 7, 2023

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workers

Five workers have been hired to complete a job. If one additional worker is hired, they could complete the job $8$ days earlier. If the job needs to completed $28$ days earlier, how many additional workers should be hired?

Guest Sep 7, 2023

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35

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quadratic

There is exactly one value of $x$ for which the distance from $(5,6)$ to $(3x-1,ax+5)$ is $4$. If $a \neq 0,$ what is $a$?

Guest Sep 7, 2023

+2

30

1

+434

Discrete Mathematics

I'm intrested in remebering the logic of these question types. When presented with a question such as:
x (is an element of) {x}
Is that neccessairly true? I would like to think it is since whatever read more ..

HiylinLink Sep 7, 2023

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need help

Let $a$ and $b$ be the roots of the quadratic equation $2x^2 - 7x + 2 = -x^2 + 4x + 9.$ Find $\frac{1}{a-1}+\frac{1}{b-1}.$

Guest Sep 7, 2023

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i need help what is 235+635

i need help what is 235+635 and 355+505

Guest Sep 7, 2023

Sep 6, 2023

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help plz

For how many values of $a$ is it true that:
(1) $a$ is a positive integer such that $a \le 50$.
(2) the quadratic equation $x^2 + (2a+1)x + 2a = 0$ has two integer solutions?

Guest Sep 6, 2023

-2

26

1

+819

help with circles

Let $A$, $B$, $C$, and $D$ be points on a circle such that $AB = 11$ and $CD = 19.$ Point $P$ is on segment $AB$ with $AP = 7$, and $Q$ is on segment $CD$ with $CQ = 8$. The line through $P$ and $Q$ intersects the circle at $X$ and $Y$. If $PQ = 25$, find read more ..

maximum Sep 6, 2023

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5

+819

help plz

help I need to find lengths
$A$, $B$, $C$, and $D$ are points on a circle, and segments $\overline{AC}$ and $\overline{BD}$ intersect at $P$, such that $AP=8$, $PC=2$, and $BD=5$. Find $BP$, given that $BP < DP.$ read more ..

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maximum Sep 6, 2023

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19

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+12

Trignometry

In square ABCD, P is on BC such that BP = 4 and PC = 1, and Q is on line CD such that DQ = 4 and QC = 1. Find

SoloX Sep 6, 2023

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