lilsis76
Name:
Alexandria Colunga
School:
Mt. San Jacinto Community College.
About:
Let me start by saying, Hello my name is Alexandria, I'm 25
I think I’m a Awesome- downto earth- Superduper-Fun Loving Person.
I love learning, but math is not my strongest subject and I'm in Precalculus :/
PLEASE anyone who reads this, I would really appreciated it. Thank You ALL!
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Questions Asked 16
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Questions Answered
lilsis76:
Group Title
There are 36 students in a certain geometry class. if 2/3 of the students are boys and 3.4 of the boys are under 6 feet tall, how many boys …
updated 10 months ago
2 replies
1 Medal
Mathematics
lilsis76:
Group Title
Assume that inflation will increase the prices of everything at a rate of 5 percent a year over the next 10 years. In 3 years, what will be …
updated 10 months ago
9 replies
1 Medal
Mathematics
lilsis76:
Group Title
what is 90 percent of 80 percent of 70 percent?
I feel like I understand it but I really dont. PLEASE HELP!!!
updated 10 months ago
7 replies
1 Medal
Mathematics
lilsis76:
Group Title
Calculate the Cell Potential and Delta G^0 for the following reaction that takes place in an Electrochemical cell at 25C.
Al(s) / Al 3+ (aq…
updated one year ago
5 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
Calculate the Cell Potential and Delta G^0 for the following reaction that takes place in an Electrochemical cell at 25C.
Al(s) / Al 3+ (aq…
updated one year ago
5 replies
1 Medal
Mathematics
lilsis76:
Group Title
Help me understand. Determine the equilibrium constant for the following reaction at 398 K.
3Cu(s) + 2MnO4- (aq) + 8H+(aq) --> 3Cu2+(aq) …
updated one year ago
88 replies
1 Medal
Mathematics
lilsis76:
Group Title
MAJOR HELP!!!Trigonometric equations: Find all solutions of the equation in the interval 0° ≤ x ≤ 360°.
a) sin 3 Theta = -squrt2 / 2
b) 2…
updated one year ago
9 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
Can someone help me understand GRAPHS OF TANGENT and the RECIPROCAL FUNCTION. Please. Because my problem is:
Graph each function, adjust…
updated one year ago
4 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
A solution contains 9.2x10 -3 M in CU 2+ and 0.73 M in LiCN. If the Kf for Cu(CN)4 2- is 1.0x10 25, how much copper ion remains at equilibri…
updated one year ago
1 reply
No Medals Yet
Mathematics
lilsis76:
Group Title
Calculate the sulfide ion concentration in a saturated H2S solution when the pH is 0.5. The concentration of H2S in a saturated H2S solution…
updated one year ago
4 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
How do I figure out the successive tenths in this problem. It does not make any sense.
My homework: Sin (2 + 2pi)
…
updated one year ago
35 replies
1 Medal
Mathematics
lilsis76:
Group Title
Determine the pH and concentration of COv3 ^2- ions in a 0.98 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1=4.3e-7 and Ka2=5.…
updated one year ago
2 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
Please Help:
How can I Prove the Following identities:
a) tan^2 theta = sec^2 theta - 1
…
updated one year ago
3 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
Prove the Following identities:
a) tan^2 theta = sec^2 theta - 1
b) cot^2 theta = csc^2 theta -1
…
updated one year ago
5 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
How do I prove:
sinB / 1 + cosB + 1+cosB / sinB = 2cscB
updated one year ago
28 replies
2 Medals
Mathematics
lilsis76:
Group Title
Suppose that your helping a friend with his homework on growth law, N(t)=Noe^kt, and on his paper you see the equation e^k = -.75. How do yo…
updated one year ago
4 replies
1 Medal
Mathematics
lilsis76:
Group Title
Exponential problem: how do I solve this problem?
xe^x -2e^x = 0
updated one year ago
4 replies
1 Medal
Mathematics
lilsis76:
Group Title
Can someone help me understand this and solve it please. Im really confused.
The Reaction rate AB--> A + B is second order in AB and has …
updated one year ago
89 replies
1 Medal
Mathematics
lilsis76:
Group Title
Simplifying expressions. How do I do these?? do I convert the -'s to a division looking expression?
1) log(base 10) (x^2 -16) -3 log(b…
updated one year ago
47 replies
2 Medals
Mathematics
lilsis76:
Group Title
If someone can help me understand, and figure this problem.
If each substance costs the same amount per kilogram (kg), which would be most…
updated one year ago
9 replies
1 Medal
Mathematics
lilsis76:
Group Title
The Perimeter of a rectangle is 12m. Find the dimensions for which the diagonal is as short as possible.
updated one year ago
33 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
What is the largest possible area for a rectangle with a perimeter of 80 cm?
updated one year ago
27 replies
2 Medals
Mathematics
lilsis76:
Group Title
Im given the volume and surface area formulas:
The accompanying figure gives formulas for the volume (V), and the total surface area (S) of…
updated one year ago
77 replies
1 Medal
Mathematics
lilsis76:
Group Title
this is a preexam for this tuesday. Need help solving and understand please.
Benzene has a heat of vaporization of 30.72 kJ/mol, and a n…
updated one year ago
80 replies
2 Medals
Mathematics
lilsis76:
Group Title
this is a preexam for this tuesday. Need help solving and understand please.
Benzene has a heat of vaporization of 30.72 kJ/mol, and a n…
updated one year ago
3 replies
No Medals Yet
Mathematics
lilsis76:
Group Title
I need help understand, and doing this problem:
Calculate the amount of energy it will take to vaporize 45.7 grams of SOLID water at 255K…
updated one year ago
113 replies
1 Medal
Mathematics
lilsis76:
Group Title
Based on the figure, the point of Diethyl Ether under an external pressure of 1.32 atm is _____degree Celcius.
How can I figure this out?…
updated one year ago
28 replies
1 Medal
Mathematics
lilsis76:
Group Title
graph the function G defined by :
updated one year ago
4 replies
1 Medal
Mathematics
lilsis76:
Group Title
Let f(x)= square root x
a) find f inverse x. What is the Domain of f inverse?
b) in each case determine whether the given point lies on th…
updated one year ago
40 replies
1 Medal
Mathematics
lilsis76:
Group Title
An 8.5g Ice Cube is placed into 255g water.
Calculate temperature change in water upon the complete melting of the ice. (Assume all the ene…
updated one year ago
56 replies
4 Medals
Mathematics
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