Tuesday
October 21, 2014

Posts by Joe


Total # Posts: 2,102

biology
5
July 18, 2011

trig
Given that SIN Theta = -1/sqrt(10) and theta is in quadrant 4, find sin2theta and cos2theta. I'm not sure how to properly square the -1/sqrt10 and keep an exact answer other than decimal. Otherwise, my final answer is Sin2Theta = -.7255970691 and cos2theta = 1.632455533
July 13, 2011

Pre-Calculus
Given that SIN Theta = -1/sqrt(10) and theta is in quadrant 4, find sin2theta and cos2theta. I'm not sure how to properly square the -1/sqrt10 and keep an exact answer other than decimal. Otherwise, my final answer is 1.632455533
July 13, 2011

Calculus
positive 5.47
July 12, 2011

Calculus
-13.67?? ...
July 12, 2011

Calculus
The altitude of a triangle is increasing at a rate of 3000 centimeters/minute while the area of the triangle is increasing at a rate of 1500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 9500 centimeters and the area is 87000...
July 12, 2011

algebra
simplify by removing the factors of 1 p^2-4/(p+2)^2
July 10, 2011

algebra
simplify by removing the factors of 1 p^2-4/(p+2)^2
July 10, 2011

English
Lying in a Hammock at William Duffy's Farm in Pine Island, Minnesota? What is the significance of this poem? What does the author mean by the last line? I don't understand what this poem is about and any help would be greatly appreciated! Over my head, I see the bronze...
July 10, 2011

chemistry
If 10 calories of heat are added to two grams of liquid water what is the temperature of the water
June 26, 2011

COLLEGE ALEGBRA
Sue, a recent retiree, requires $6,000 per year in extra income. She has $50,000 to invest and can invest in B-rated bonds paying 15% per year or in a certificate of deposit (CD) paying 7% per year. How much money should be invested in each to realize exactly $6,000 in ...
June 20, 2011

math
What formula would you use to figure out this word problem? A rectangular pen for a pet is 8 feet longer than it is wide. Give possible values for the width W of the pen if its area must be between 180 and 825 square feet, inclusively.
June 18, 2011

Algebra
James has saved $50. He wants to buy a DVD player for $149 in about 5 months. To find out how much he should save each week he wrote 50+20x=149. Explain his equation.
June 16, 2011

math
if i made $65,000 a year and got a $3000 raise. what would be the precent increase rounded to the nearest tenth
June 13, 2011

COLLEGE ALGEBRA
.7638
June 12, 2011

physics
ya get it 69
June 9, 2011

physics
...
June 9, 2011

physics
...
June 9, 2011

physics
fist you take 100 and then *2 to get 200 then do3.275 * 40 and get 131 then all you need to do is 200-131... and get______________________________________________
June 9, 2011

Math - Possible or Potential rational zeros
idk
June 1, 2011

Math
7yd 2ft 3in - 2yd 2ft 9 in
June 1, 2011

Math
A pyramid is inscribed in a cube whose volume is 52(pi) cm^3. The volume of a sphere is equal to the volume of this pyramid. Find the volume of a second cube whose edge is equal to the radius of the sphere.
May 31, 2011

math
sorry i dont understand the question
May 31, 2011

Math
Compute the number of eleven-digit integers that can be formed using all of seven 1s and four 0s if you never start of end with a 0 and no 0s are ever next to each other.
May 31, 2011

math
ok to find a diagonal you use the Pythagorean theorem which is a^2 + b^2 = c^2 ok? c^2 is the diagnol. So basically a^2 + b^2 = 100 ok? so what two squares equal 100. well 64+36=100 take the square root of those two which is 8 and 6. so the perimeter is 28 cm long
May 31, 2011

math
if you retyped the question so that it is legible i may be able to help you, otherwise i won't.
May 31, 2011

Math
alright thankyou.
May 31, 2011

Math
uh oh my mistake. I missed a key part of the question. the question is..... How many terminal zeros are at the end of (20!)^2?
May 31, 2011

Math
20,15,10, and 5 are all divisible by 5. so 4. Is that how you solve for the amount of terminal zero's?
May 31, 2011

Math
How many terminal zeros are at the end of (20!)?
May 31, 2011

math
what kind of name is aniket? ok back to the question, i'm not sure how to explain to you how i solved this one but i did find the answer. I just made one of his subjects marks 60 then i subtracted 20 from 60 and added 20 from 60 so the three mark amounts are 40,60,80. So ...
May 31, 2011

statistics
10.15 A psychologist theorized that people can hear better when the have just eaten a large meal. Six individuals were randomly assigned to eat either a large meal or a small meal. After eating the meal, their hearing was tested. The hearing ability scores (high numbers ...
May 30, 2011

Chemistry
How many mL of 0.024M KMn04 (Potassium Permanganate) is required to react with 20mL of 0.112M Fe2+?
May 29, 2011

Math
1 1/3 - 1 3/4
May 26, 2011

Math
what do you notice about each ratio? 2/1 and 4/3
May 26, 2011

World History
What was the most important factor in the British conquest of India during the eighteenth century? A. willingness of the British government to pay for an invasion. B. political disunity in India. C. superiority of British arms. D. addiction of millions of Indians to opium. I ...
May 25, 2011

math
Compute the number of eleven-digit integers that can be formed using all of seven 1s and four 0s if you never start or end with a 0 and no 0s are ever next to each other.
May 23, 2011

Algebra
well for 1 day you have 21 dollars to spend on mileage. $21.00/$0.21 which is 100 miles
May 23, 2011

Algebra I
this is funny i came here to ask question but yet i'm answering them. the formula for this is S=D/T or Speed = Distance divided by time, but since you are looking for the time you need to get T by itself. To do so you have to multiply both sides by T then divide S from ...
May 23, 2011

math
Compute the number of eleven-digit integers that can be formed using all of seven 1s and four 0s if you never start or end with a 0 and no 0s are ever next to each other.
May 23, 2011

math
im sorry i looked back at what i tried to write out and it turned out wrong, the two 2's are meant to be right after the g's in both the logs and as a subscript because it is log base 2.
May 23, 2011

math
unsure how to explain how to solve it but i calculated it in my ti-84+ calculator with an equation solver that i downloaded. 4^log [2log (5)] = 21.56540031 2 2
May 23, 2011

math
A box containing Munchkins contains chocolate and glazed donut holes. If Gloria ate 2 chocolate Munchkins, then 1/11 of the remaining Munchkins would be chocolate. If Gloria added 4 glazed Munchkins to the box, 1/7 of the Munchkins would be chocolate. How many Munchkins are in...
May 23, 2011

math
A large rectangle is divided into 4 non-overlapping smaller rectangles by two lines. One line is parallel to the base, and the other line is parallel to the height. If the areas of three of the small rectangles are 18,24, and 40, compute the only possible integer solution for ...
May 23, 2011

math
the sign of the sum would be negative, for example: -14+7=-7 because the negative integer has a greater magnatude, then the sign will remain to be negative.
May 23, 2011

Math
unsure what you are asking. Is there a slope given?
May 23, 2011

math
the sign of the sum would be negative, for example: -14+7=-7 because the negative integer has a greater magnatude, then the sign will remain to be negative.
May 23, 2011

Urgent Math
A large rectangle is divided into 4 non-overlapping smaller rectangles by two lines. One line is parallel to the base, and the other line is parallel to the height. If the areas of three of the small rectangles are 18,24, and 40, compute the only possible integer solution for ...
May 23, 2011

Math
18=(2*3)*(3*3)??? This doesn't work
May 23, 2011

Math
A large rectangle is divided into 4 non-overlapping smaller rectangles by two lines. One line is parallel to the base, and the other line is parallel to the height. If the areas of three of the small rectangles are 18,24, and 40, compute the only possible integer solution for ...
May 23, 2011

Math
I am pretty much clueless with this but would like some help the question i have been given is........How many terms are in the expansion of (a+b+c)^5 after like terms have been combined? Please help me all the way through it if you can. Thankyou
May 23, 2011

Math
A box containing Munchkins contains chocolate and glazed donut holes. If Gloria ate 2 chocolate Munchkins, then 1/11 of the remaining Munchkins would be chocolate. If Gloria added 4 glazed Munchkins to the box, 1/7 of the Munchkins would be chocolate. How many Munchkins are in...
May 23, 2011

precal
find the quotient z/w z=8(cospi/3+isinpi/3) w=4(cospi/18+isinpi/18)
May 20, 2011

precal
identify the trigonometric form of -6+6i
May 20, 2011

precal
find zw z=8(cospi/2+isinpi/2) w=4(cospi/4+isinpi/4)
May 20, 2011

precal
(root2-root2i)^6
May 20, 2011

precal
identify the standard form of the complex number: 10(cos259+isin259)
May 20, 2011

pre calculus
cube roots of 64i?
May 20, 2011

pre calc
find the fourth roots of 1-root3i
May 20, 2011

pre cal
convert the point to rectangular coordinates (7,1.75)
May 20, 2011

pre cal
convert the point to polar coordinates: (12,-12)
May 20, 2011

pre cal
[root2(cos2pi/11+isin2pi/11)]^4
May 20, 2011

pre cal
convert the point to rectangular coordinates (5,5pi/6)
May 20, 2011

pre calc
find the fifth roots of -32i
May 20, 2011

precalculus
covert the rectangular equation to polar form x2+(y+2)2=4
May 20, 2011

precalculus
fourth roots of 1-root3i
May 20, 2011

Math
the nature camp students are lunch at the lodge. They sat at an even number of tables. There were 5 students sitting at one table, and an equal number of students sitting at each of the other tables. How many students were sitting at each of the other tables?
May 18, 2011

the American journey
for #1 I think its C.and #2 A
May 18, 2011

the American journey
where did the traditions of the the cowhand begin? A.the confederate army? B.the vaqueros C.african american culture D.irish immigrants
May 18, 2011

the American journey
how about this one.... Before railroads, communities across the united states. A. fought the railroad's arrival. B. kept their own time. C. were organized into time zones. D. found it easier to transpot goods to market.
May 18, 2011

the American journey
1.why were immigrants and african americans hired to build the transcontinental railroad?A.they lived near the railroad?B.they were extremely skilled.C.they would work for very low wages.D.all of the above
May 18, 2011

Geometry
find the area of a parallelogram with diagonals of lengths 10 inches and 22 inches that intersect at a 65 degrees angle
May 17, 2011

geometry
that last answer posted is wrong
May 17, 2011

geometry
find the area of a parallelogram with diagonals of lengths 10 inches and 22 inches that intersect at a 65 degrees angle.
May 17, 2011

Math
If M=(1*2*3*4*......*1000) + 1, is M prime? I said no because 24001 can only be divided by 1 and itself, but I got a point off. Why is this?
May 10, 2011

Math - Equivalent Fractions
What is the equivalent fraction for 16/36
May 9, 2011

ENGLISH
Explain the initial steps of writing an essay. Identify how your audience, purpose, and content will influence your approach.
May 6, 2011

Business
I was asked to articulate what I feel are good traits of effective organization, as well as describe how I think culture affects the ability to handel change. I replied with a 350 word response, in my response i stated the "...culturally responsive; this leads way to the ...
May 6, 2011

english
hoe to diagram the white cat sleeps quietly
May 6, 2011

Algebra
Which digit will appear in the 534th place after the decimal point in the decimal representation of 5/13?
May 6, 2011

Math
2 apples weigh the same as a banana and a cherry.A banana weighs the same as nine cherries.How many cherries weigh the same as one apple
May 5, 2011

PreCalc - Vectors
An airplane is flying with an airspeed of 660 Kilometers per hour. The wind is blowing from 345 degrees at 35 km/h. What direction should the airplane take so that, with the wind, the plane will be flying in a direction of 72 degrees? I can compute airspeed and actual ...
May 3, 2011

Pre-Calculus
Two barges are pulling a ship into the harbor. Barge A is pulling with a force of 2700N at N43 deg E, and barge B is pulling at S 50 deg E. What force must barge B exert so that the ship is pulled directly East?
May 2, 2011

Algebra
What is the least integer value of x such that |2x + 7| is < or equal 16?
May 1, 2011

Algebra
Each year the value of a car decreases by 25% of its value the previous year. After 5 years, what is the value of a car originally worth $17,500? Express answer to the nearest dollar.
May 1, 2011

social civics
what is the purpose of a franchise agreement for public utility and how public utilities are regulated
May 1, 2011

chemistry
OF THE FOLLOWING SUBSTANCES, WHICH HAS THE LARGEST AVERAGE SPEED AT 25DEGREES. CO, NH3,H2,N2?
April 30, 2011

geology 245
Power point on factors and forces of geological features for the Barnett Shale
April 30, 2011

Geology 245
I am in need of help with my final project in Geology. I have to create a 12-15slide powerpoint presentation on Factors and Forces of Geological Features, The Barnett Shale. I have the final rubric Final Rubric: |Factors and Forces of Geological Features Objective of Exercise...
April 30, 2011

math
An 11 ounce bag of chips costs $1.99 what is the cost per ounce rounded to the nearest cent? What is the cost per pound rounded to the nearest cent
April 28, 2011

chemistry
Im lost, I dont think Im doing any of it right :/
April 28, 2011

chemistry
I still dont understand part e.
April 28, 2011

chemistry
For part a, would the pH be .523?
April 28, 2011

chemistry
0.5 L of a 0.30 M HCl solution is titrated with a solution of 0.6 M KOH. a)What is the pH before addition of KOH? b)What is the total number of moles of acid? c)What is the pH after addition of 125 mL of KOH solution? d)What volume of the KOH solution is required to reach the ...
April 28, 2011

Chemistry
6.71 X 10^-18
April 27, 2011

Math
I need help solving this using U- Substitution (x^2-4)^2 + (x^2-4) -6=0
April 27, 2011

algebra
Your company would like to know how sales levels affect profits. If too few items are sold, then there is a loss. Even if too many items are sold, however, the company can lose money (likely because of low pricing). It is good to know how many items can be sold for there to be...
April 26, 2011

algebra 2 and trig (math)
Find the value of x in the interval 0 is less than or equal to x and 360 is greater than or equal to x which satisfies the equation cos x - 2 cos x sin x.
April 26, 2011

algebra 2 and trig (math)
Find the positive acute angle that satisfies the equation tan(squared) minus tan = 0.
April 25, 2011

Math
What is happening?
April 25, 2011

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