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Post New Question
All Questions
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234773 Questions
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337
1
maths
what is 12x3
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Guest
Jan 25, 2021
0
1857
2
pls help
A new car is purchased for 22400 dollars. The value of the car depreciates at 6.75% per year. What will the value of the car be, to the nearest cent, after 9 years?
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Guest
Jan 25, 2021
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473
1
+70
bruh
What is the escape speed (in km/s) from an Earth-like planet with mass 5.8e+24 kg and radius 66.0 × 105 m? Use the gravitational constant G = 6.67 × 10-11 m3 kg-1 s-2.
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Skatergoat
Jan 25, 2021
0
969
1
i do not like this question
Let $n$ be a positive integer greater than or equal to 3. Let $a,b$ be integers such that $ab$ is invertible modulo $n$ and $(ab)^{-1}\equiv 2\pmod n$. Given $a+b$ is invertible, what is the remainder when $(a+b)^{-1}(a^{-1}+b^{-1})$ is
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Guest
Jan 25, 2021
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399
1
need help with algebra
\[kx^2-17x+2k=0\]
Find the maximum integral value of k for which the above quadratic equation has two distinct real roots.
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Guest
Jan 25, 2021
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496
2
geometry
Pentagon ABCDE is inscribed in a circle with center at O and diameter AB. Find the measure of angle AED + angle DCB in degrees.
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Guest
Jan 25, 2021
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398
1
Geomtry
In the diagram, , arc is , and arc is . Find arc , in degrees.
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Guest
Jan 25, 2021
-1
396
1
Help Please
If $a
(Your answer can include $a$ and $b,$ and should be as simplified as possible.)
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Guest
Jan 25, 2021
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281
2
please help
Write 2020^2021 -2020^1011+2020 as a sum of two perfect squares.
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Guest
Jan 25, 2021
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305
0
leap years
A proposal will make years that end in double zeroes a leap year only if the year leaves a remainder of 200 or 600 when divided by 900. Under this proposal, how many leap years will there be that end in double zeroes between 1996 and 2096?
Guest
Jan 25, 2021
0
434
1
Quadratic Functions
Find a formula for the quadratic function whose graph has vertex (−2,−1) and y-intercept 5.
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Guest
Jan 25, 2021
0
430
3
Help Me!
What is the sum of the squares of all real values of $x$ for which $|2-|x| |=1$?
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Guest
Jan 25, 2021
0
436
2
roots
$\sqrt{2}$ is the sixth root of what positive whole number?
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Guest
Jan 25, 2021
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439
1
Area of Hexagon : Area of Triangle
What is the ratio of a hexagon with side length 3 to a triangle with side length 3sqrt(3)?
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Guest
Jan 25, 2021
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340
1
what can you say to math?
what can you say to math?
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Guest
Jan 25, 2021
0
258
0
function problem
Suppose that a and b are positive real numbers, and let
f(x) = a/b*x if x <= -4
f(x) = abx^2 if x > 4
If f(-4) = -60/7 and f(4) = 3120, what is a + b?
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Guest
Jan 25, 2021
0
675
2
Please Help
The quadratic $2x^2-3x+27$ has two imaginary roots. What is the sum of the squares of these roots? Express your answer as a decimal rounded to the nearest hundredth.
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Guest
Jan 25, 2021
0
334
1
math question
When we say that Ray is climbing up the stairs M at a time, we mean that he starts on the floor (step 0) then jumps to step m and then to 2m and so on until the number of steps to the top is less than m. Ray climbs up a flight of stairs of n steps
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Guest
Jan 25, 2021
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411
1
help number
Let n be a positive integer. If a = 81n + 25, what is the remainder when a is divided by 9?
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Guest
Jan 25, 2021
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276
0
modular calculation
If 4x = 16 (mod 20), then what is the remainder when x^2 is divided by 20.
Guest
Jan 25, 2021
0
283
0
number theory
What is the smallest positive integer n such that 3n = 1356 (mod 27).
Guest
Jan 25, 2021
0
522
2
+126
trigonometry question
How many values of x where 0<=x<=990 in degrees satisfy sin(x)=-0.31?
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geoNewbie21
Jan 25, 2021
0
794
3
Help is appreciated
A certain organization consists of five leaders and some number of regular members. Every year, the current leaders are kicked out of the organization. Next, each regular member must find two new people to join as regular members. Finally, five new people
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Guest
Jan 25, 2021
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