Grazes
 Name:
 Kevin Lee
 School:
 Stuyvesant High School
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Grazes:
Group Title
If the three roots of the polynomial x^3+3x^25x+1 are r1,r2,r3, find r1r2+r1r3+r2r3.
Can someone do this step by step so I understand it? …
 updated 7 months ago
 1 reply
 1 Medal
Mathematics

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Group Title
Which of the following is not a solution to 2sin^2(x)+sinx?
330,210,180,150,0 (in degrees)
 updated 7 months ago
 3 replies
 1 Medal
Mathematics

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Group Title
If the four roots of the polynomial x^4+3x^2+2x^2+4x4 are r1,r2,r3,r4 then r1r2r3+r1r3r4+r1r2r4+r2r3r4=?
 updated 7 months ago
 1 reply
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Mathematics

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Image.
 updated 7 months ago
 17 replies
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Mathematics

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Let P(x)=x^36x+k. If the sum of the two roots of P(x) is 2, then the third root is...
 updated 7 months ago
 16 replies
 1 Medal
Mathematics

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What is the xcoordinate of the point on the graph of the equation y=2x+3 which is closest to the point (5,0)?
 updated 7 months ago
 44 replies
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Mathematics

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What will the remainder be when P(x)=x^13+4x^73x+2?
How can I do this without dividing everything out?
 updated 7 months ago
 7 replies
 1 Medal
Mathematics

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Group Title
Find roots of the equation.
 updated 8 months ago
 11 replies
 2 Medals
Mathematics

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Group Title
Can someone explain why an infinite series won't change even if you add another term of the sequence to the end of it?
 updated 8 months ago
 13 replies
 1 Medal
Mathematics

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Geometric Sequences
 updated 8 months ago
 15 replies
 1 Medal
Mathematics

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Sequences
 updated 8 months ago
 6 replies
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Mathematics

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Show that n^3>(N+1)^2 for all natural numbers n>=3.
 updated 8 months ago
 26 replies
 3 Medals
Mathematics

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Group Title
Prove the identity: 4k^3+15k^2+17k+6=(k+1)(k+2)(4k+3) using the left side.
 updated 9 months ago
 1 reply
 1 Medal
Mathematics

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Prove the identity: 4k^3+3k^2+11k+9=(k+1)(k+2)(4k+3)
 updated 9 months ago
 3 replies
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Mathematics

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Find k and the roots:
The sum of 2 roots of 3x^3+kx^23x+12 is 0
 updated 10 months ago
 2 replies
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Mathematics

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Find the contact force
a. between boxes 1 and 2
b. between boxes 2 and 3
 updated 10 months ago
 1 reply
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Mathematics

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One root of the equation x^2+kx+2k=0 (k!=0) is twice the other. Find k and find the roots of the equation.
 updated 10 months ago
 9 replies
 1 Medal
Mathematics

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Group Title
A diver runs horizontally off the end of a diving board with an initial speed of 1.75m/s. If the diving board is 3.00m above the water, what…
 updated 11 months ago
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Mathematics

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Find a quadratic function that has zeroes 4 and 9 and a graph that passes through (3,5).
 updated 11 months ago
 5 replies
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Mathematics

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Find the inverse of y=x^2+4x+8 if x>2
 updated 11 months ago
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Mathematics

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a sailboat runs before the wind with a constant speed of 2.8m/s in a direction of 52 degrees north of west. How far (a)west and (b)north has…
 updated 11 months ago
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Mathematics

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(x^8+x^6)/(x1)
Is there an easier way to find the remainder without dividing it out?
 updated 11 months ago
 21 replies
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Mathematics

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Use the remainder theorem to evaluate f(x) for the given value x. 6x^36x^2+x5; x=3
 updated 11 months ago
 4 replies
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Mathematics

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A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations?
Just explain it s…
 updated 11 months ago
 5 replies
 1 Medal
Mathematics

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Group Title
Assume that f and g are inverse functions. if g(2)=0, what is f(0)?
 updated 11 months ago
 7 replies
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Mathematics

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Scores on an exam are normally distributed with a standard deviation of 40 points. If a score of 552 place you exactly at the first quartile…
 updated 11 months ago
 10 replies
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Mathematics

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A particle is accelerated uniformly from rest to a speed of 50m/s in 5 seconds. The average speed of the particle during this 5sec time inte…
 updated 11 months ago
 6 replies
 1 Medal
Mathematics

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Group Title
In a 4.0km race, a runner conpletes the first km in 5.0m, the 2nd km in 6.2, the 3rd km in 6.3min, and the final km in 6.0 min. What was the…
 updated 11 months ago
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Mathematics

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Assume male shoe sizes have a mean of size 10 and standard deviation of 2. At least what % of the population have shoe sizes between 7 to 13…
 updated 11 months ago
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Mathematics

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As a train accelerates away from a station, it reaches a speed of 5.2m/s in 5.0s. If the train's acceleration remains constant, what is the …
 updated one year ago
 11 replies
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Mathematics
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