JRHarrison90
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 Jessica Harrison
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 Questions Asked
 54
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 17
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 6

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 1
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 1
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 1
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 0
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 Questions Asked
 10
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 Questions Asked
 54
 Questions Answered
 17
 Medals Received
 6

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Questions Asked

JRHarrison90:
Group Title
Given 1 is less than or equal x^2 +y^2 less than or equal 2, find the largest and smallest values of the expression z=x^2 +xy+y^2
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Let f(t)=sqrt(1+t^2)  t. Find the value of the expression:
f(x)f(y)+f(y)f(z)+f(z)f(x), if xy+yz+zx =1, x, y, and z are all greater than 0…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Left f(t) = sqrt(1+t^2)  t. Find the value of the expression.
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
Solve the equation:
 updated one year ago
 3 replies
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Mathematics

JRHarrison90:
Group Title
Does the following system have positive solutions:
x^2+xy+y^2=4
x^2+xz+z^2=9
…
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
Does the following system have positive solutions:
 updated one year ago
 1 reply
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Mathematics

JRHarrison90:
Group Title
Tangency point D of the incircle divides side AC of triangle ABC into the segments of length 4cm and 5cm. Find Area ABC if BD = square root(…
 updated one year ago
 1 reply
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Mathematics

JRHarrison90:
Group Title
Prove directly:
Give n that a, b, c is a Pythagorean triple that qa, qb, and qc is a Pythagorean triple where q is an element of R and q do…
 updated one year ago
 4 replies
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Mathematics

JRHarrison90:
Group Title
This is dealing with triangular numbers Tn. Hint, try several examples using numbers to get a pattern and make a conjecture.
Prove that 8T…
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
Given pn and pm are any any prime numbers, and pn>2 and pm>2 then prove that the sum of any two prime numbers is even.
 updated one year ago
 1 reply
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Mathematics

JRHarrison90:
Group Title
Make a conjecture about 8Tn + 1 and then prove it.
Triangular numbers Tn. Hint, try several examples using numbers to get a pattern and mak…
 updated one year ago
 19 replies
 1 Medal
Mathematics

JRHarrison90:
Group Title
Prove:
3 divides (n^(3)  n) n is an element of N
…
 updated one year ago
 13 replies
 1 Medal
Mathematics

JRHarrison90:
Group Title
Prove directly:
Given that a, b, c is a Pythagorean triple, prove that qa, qb, and qc is a Pythagorean triple where q is contained in R, q …
 updated one year ago
 12 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
1 + 2^1 + 2^2 + 2^3 + 2^4 + 2^5 + ...2^n = 2^(n+1) 1. Prove
 updated one year ago
 8 replies
 3 Medals
Mathematics

JRHarrison90:
Group Title
In acute triangle ABC, altitudes AP and CQ are drawn. Find radius ABC if area ABC=18, area BPQ=2 and PQ=2root2.
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
Triangular pattern. 1, 3, 6, 10, 21, 28. I know the pattern but how do I get to go negative then positive.
 updated one year ago
 3 replies
 2 Medals
Mathematics

JRHarrison90:
Group Title
If a normally distributed random variable x has a mean u=7 and a standard deviation omega = 2. find P(x<6).
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
A board is attached to a pivot as shown, 3m from left end. There are two downward forces once located 2 m from the left side and one located…
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
A vertebra is subjected to shearing force of 535 N. Find the shear deformation, taking the vertebra to be a cylinder 3.00cm high and 6.00cm…
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
A simple pendulum on the surface of Earth is found to undergo 11 complete smallamplitude oscillations in 7.8s. Find the pendulum's length.
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
It is weighin time for the local under 85 kg rugby team. The bathroom scale used to assess eligibilty can be described by Hooke's law, whic…
 updated one year ago
 32 replies
 1 Medal
Mathematics

JRHarrison90:
Group Title
The lengths of sides of triangle ABC are 11cm, 13cm, and 12cm. Find the length of the median drawn to the largest side.
 updated one year ago
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Prove
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Prove that n^2 + 5n is divisible by 2 where n is in N.
 updated one year ago
 6 replies
 3 Medals
Mathematics

JRHarrison90:
Group Title
Show that any three integers contain a pair whose sum is even.
 updated one year ago
 9 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Find the bisectors of the acute angles of a right triangle whose legs are 24cm and 18cm. (Show work with pictures not just answer)
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
Two forces act on an object. The first force has a magnitude of 19.0 N and is oriented 78.0 degrees counterclockwise from the +x axis, while…
 updated one year ago
 10 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
You are a member of a production crew filming a nature explorer in the Rocky Mountains. The explorer needs to swim across a river to his ca…
 updated one year ago
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a b…
 updated one year ago
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Mathematics

JRHarrison90:
Group Title
A speedboat moves on a lake with initial velocity vector v1c=9.53m/s and v1y=2.49m/s, then accelerates for 6.01 seconds at an average accel…
 updated one year ago
 No Medals Yet
Mathematics

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