JRHarrison90
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0 
Questions Answered

thaddus20:
Group Title
Simplify this expression.
5x(3x2 + 6)
…
 updated 3 months ago
 2 replies
 No Medals Yet
Mathematics

katee16:
Group Title
8x2 + 16x + 8 = 0
 updated 3 months ago
 2 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Solve the equation:
 updated 3 months ago
 3 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Does the following system have positive solutions:
 updated 5 months ago
 1 reply
 No Medals Yet
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 7 months ago
 19 replies
 1 Medal
Mathematics

JRHarrison90:
Group Title
Prove:
3 divides (n^(3)  n) n is an element of N
…
 updated 7 months 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 7 months 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 7 months ago
 8 replies
 3 Medals
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 8 months ago
 32 replies
 1 Medal
Mathematics

JRHarrison90:
Group Title
Prove
 updated 9 months 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 9 months ago
 6 replies
 3 Medals
Mathematics

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

arihudo:
Group Title
15<5(m7)
 updated 9 months ago
 1 reply
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
After driving around and undergoing a displace of delta rx = 20.1km and delta ry = 11.3km, a driver finds herself at position r2x = 31.9km…
 updated 10 months ago
 7 replies
 1 Medal
Mathematics

JRHarrison90:
Group Title
The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56s. At this rate, how many seconds would it t…
 updated 10 months ago
 3 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Let there be a trapezoid with bases a and b (a>b) and height h. Find the height of the triangle formed by the extensions of nonparallel side…
 updated 10 months ago
 2 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
How many grams of salt are needed to make 771 grams of saltwater that is 41.5% salt by mass?
 updated 11 months ago
 5 replies
 1 Medal
Mathematics

JRHarrison90:
Group Title
Determine whether the sets below are welldefined or not. For each welldefined set, state whether it is finite or infinite.
a) The set of…
 updated 11 months ago
 8 replies
 2 Medals
Mathematics

JRHarrison90:
Group Title
Decide whether the set of all real numbers of the form m+nroot(2) where m is in Z and n is E (E is the ring of all even numbers) is a integr…
 updated one year ago
 29 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Let G be the group M2(Z5) under addition. List the elements of the subgroup <A> of G if A = [[0],[1]],[2],[4]]. Click for a better vision.
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Find all zero divisors in Z12
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Find the order of (1,4,2,3,5)(1,3,4,5).
 updated one year ago
 12 replies
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Express as a product of disjoint cycles: (1,4,2,3,5)(1,3,4,5).
 updated one year ago
 6 replies
 1 Medal
Mathematics

kittykitty:
Group Title
Find the 10th term in the addition pattern with the formula: 8n – 3
A.
…
 updated one year ago
 4 replies
 1 Medal
Mathematics

fareastmovement13:
Group Title
round to the nearest hunderd 49,807
 updated one year ago
 8 replies
 No Medals Yet
Mathematics

lol24:
Group Title
1. 8/9  10/3 =
a. 2/9
…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

peacehopeemily:
Group Title
5 ^3sqrt(9y^2)*^3sqrt(24y)
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

sheemah44:
Group Title
Factor the expression x2 − 5x − 24.
. (x − 4)(x + 6)B. (x − 3)(x + 8)C. (x + 3)(x − 8)D. (x + 4)(x − 6)
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

JRHarrison90:
Group Title
Find an isomorphism from the additive group Z6 to the multiplicative group G = {[a] is in Z7[a] does not equal 0}. Click for picture.
 updated one year ago
 15 replies
 No Medals Yet
Mathematics

allie_bear22:
Group Title
If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?
5x − 6y = 6
…
 updated one year ago
 7 replies
 1 Medal
Mathematics
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