# Posts by Matt

Total # Posts: 2,383

science
How does oxygen production relate to the rate of photosynthesis?

Earth Science
If the continental crust were thinner than its average thickness of 40 km, would it depress the mantle more or less than it does now? Explain.

calculus
Let A(x) be the area of the rectangle inscribed under the curve with vertices at (-x,0) and (x,0), x > 0. a. Find A(1). b. What is the greatest value of A(x)? Justify your answer. c. What is the average value of A(x) on the interval 0 < x < 2?

earth
the area around the great lakes was once covered by thick sheets of ice. Use the principal of isostasy to explain how the melting of these ice sheets has effected the land around the lakes?

Precalculus
Find dy/dx if y= (6x sqrt(x^3) (-2(cubic root of x+ pie^4).

Math
The coordinates of P are (-2,5) the coordinates of Q are (6,1). What is the equation of the perpendicular bisector of PQ? *I was able to figure out that the slope of line PQ is -1/2 and the equation of PQ is -1/2x+4=y

Physics
88.2N and UP

computer science
THANKS! but how would I do the second part? "Modify the program so it calculates and displays the amount of money Packaage A customers would save if they purchased Packages B or C, and the amount of money Package B customers would save if they purchased Package C. If ...

computer science
I need help with my Java homework! Write a program that calculates a customer's monthly bill. It should ask the user to enter the letter of the package the customer has purchased (A, B, or C) and the number of hours that were used. It should then display the charges. ...

computers
Determine the functional dependencies that exist in the following table; then convert this table to an equivalent collection of tables that are in third normal form: Marina, (MarinaNum, Name, (SlipNum, Length, RentalFee, BoatName) ) *Note MarinaNum is underlined

Chemistry
Thank you for the help DrBob

Chemistry
I don't understand these two questions. Any help on how to figure this would be great. Thanks. 1. Write the equation for the decomposition of the hydrate, MgC*XH₂O 2. Write the equation for the decomposition of the hydrate, CuSO₄*XH₂O.

hi i learned how to write essays at colleage who needs help ?

geometry
Ffgff

math
write this equation in standard form. y=1/2x2+12x-8 y equals one half x squared plus 12x minus 8

Math
The directions for this problem is to simplify the equation using like terms. I'm confused. 3(2t-9)-2(5t-3)

History
All of the following were reasons for the failure of the People's (Populist) party EXCEPT a.the radical nature of its program alienated non farming interests b.racism strained the coalition of poor White and Black farmers c.the Democratic party co-opted some of the ...

Calculus
its proven by the mean value theorum f'(c)=f(b)-f(a)/(b-a)

trig
Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I still can't figure this out.

trig
Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I can't figure this out.

physics
Vector V1 is 6.4 units long and points along the negative x axis. Vector V2 is 8.9 units long and points at 60 degrees to the positive x axis 1) find x and y components of v1 and v2? 2) find magnitude of the sum v1+v2? 3) find the angle of the sum v1+v2? I found the answers to...

calculus
U-Substitution 1. 3x(sin^2((3x^2)+1)cos((3x^2)+1)dx 2. (x^3)(sqrt((3x^2)+1)) dx u = ((3x^2)+1) then?

math
isnt the area of a triangle .5bh?

accounting
try the termpapergurus..they do you homework for you at a very reasonable price..be sure to check them out

math
Thank You SO Much! :)

math
Which of the following are true of ordinary whole-life insurance policies? 1. The insured pays premiums on this type of insurance until his death. 2. Ordinary whole life insurance covers the insured for the states term of the policy. 3. The insured only has to pay on this type...

math
yeah i don't understand the wording but the diagram shows that each end of the entire rectangular pen is 2x

math
A farmer has 1000ft of fence and wishes to enclose the largest possible area that has four individual square pens bordered by a rectangular pen of a different width on each end. what are the overall dimensions of the fence area with maximum square footage? so far i thought i ...

AP Government
While political participation through voting in the US remains low compared to other democratic societies, Americans participate in their democracy in other ways. Explain.

History of Science
The one about Pascal's Law just gives sites about what it is, and its applications, not what Pascal himself did to discover it, which is what I need.

History of Science
Hey, Im doing a paper on Pascal's work in physics, but most of the sites that google gives me concern mostly about his religious life and only briefly talk about his scientific accomplishments. I need help finding a site that gives in depth detail of his experiments with ...

Math
match the word with the definition: (A)Personal exemptions (B)Adjustments (C)Tax credits (D)Itemized deductions (1) The amount you may be able to deduct from your adjusted gross income based on how you spent your money during the year. (2) A set amount subracted from your ...

Math
match the word with the definition: (A)Personal exemptions (B)Adjustments (C)Tax credits (D)Itemized deductions (1) The amount you may be able to deduct from your adjested gross income based on how you spent your money during the year. (2) A set amount subracted from your ...

Math
an eight character password must be six letters of the alphabet (not case-sensitive) followed by a two digit number. how many different addresses of this kind are possible

Algebra
Thank you ALan. I will copy the formual to use for another time!

Algebra
Find the slope of the line containing the points (-9, 1/2) and (-5, 1/2)

Chem
Do my answers look correct for these? Thanks Calculate the mass percent of a solution containing 45.6 grams ethanol (C2H6O) in 245 grams of water. 15.7% You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe ...

Honors Chemistry 101
Do my answers look correct for these? Thanks Calculate the mass percent of a solution containing 45.6 grams ethanol (C2H6O) in 245 grams of water. 15.7% You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe ...

Algebra
write an inequality that expresses when you would use a 20% off coupon for \$5 off when you spend \$20 or more.

Algebra
The formula R= -0.75t +385 can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.7 min. Solve for t

Algebra
cIc<1020.28 Thanks!

Algebra
A metal stays solid at Fahrenheit temp below 1868.5 Determine (in terms of an inequality) those Celsisu temp, for which the metal stays solid. Use the formula F=9/5c+32

Algebra
Thank you Ms. Sue.

Algebra
A mt. with the base 11,554 feet below sea level rises 18,403 feet. What is the elevation above sea level of its peak? What is the elevation of the mt's peak?

math
Marcus and Allen are playing Rock/Paper/Scissors. The first one to win 10 times does not have to do the dishes. The score is now 9 to 7 in favor of Marcus. If ties are ignored and not counted, what is the probabilty Marcus will not have to do the dishes?

math- odds
thanks that helps!

math- odds
A bag contains 13 balls numbered 1 through 13. What are the odds in favor of selecting a ball that has an even number? Explain why?

geometry
Cool, thanks!

geometry
Two corresponding sides of similar polygons are in the ratio of 2 : 7. If the area of the smaller figure is 8 square meters, what is the area of the larger figure?

Calculus
Sketch the graph of a function that is continuous at x=5 but not differentiable at x=5.

calculus
sin(tan^-1(-7/3)) How do i evaluate this? answer has to be exact with no decimals.. calculators not allowed either..

calculus
I need to find the critical number of 4x^3-36x^2+96x-64 by factoring. Basically I need to know the zeros.

Masters Cybersecurity
a) Draw the bits for the four octets of the IP address of the first host on the first subnet. 10000000.10101011.00000000.00000001 b) Convert this answer into dotted decimal notation. 128.171.0.1 c) Draw the bits for the second host on the third subnet. 10000000.10101011....

math
25-7×2÷4+2

The price of a sweater is \$5 less than teice the price of a shirt. if four sweaters and three shirts cost \$200, find the price of each shirt and each sweater.

Algebra
State whether each equation represents a linear, quadratic, or exponential function. Tell how you decided. 1. y = 9^3x + 4 2. 4x = 5 - y 3. y = 2x^2 + 23 – 14x

Grammar and Composition
Pittance is a noun, not an adjective

science
we need help finding the plant life cycle.

Science
15 ways Radio waves are used in a neighborhood?

PSY210 APPENDIX G
According to Sternberg, a person can experience eight general types of love. In the following table, a type of love as identified by Sternberg is in the left column. In the center column, write the combination of components that type of love demonstrates (intimacy, passion, or...

Physics
When you lift a ball with a force of 82N, the ball accelerates upward with an acceleration of a. If you lift with a force of 92N, the balls acceleration is 2*a. Find the weight of the ball, and the acceleration a. I know that 82 = ma +mg 92 = m2a + mg That logic is correct ...

Biology
Can proteins like GFP slow transcription of other essential cellular proteins?

Statistics
What is the probability of drawing an ace and a 10, Jack, Queen, or King from a deck of cards?

What is the least and greatest original numbers of 460 by Tens

Math
A quadrilateral is a ____ if and only if one pair of opposite sides are parallel and the other pair of opposite sides are congruent. Choices: Kite, Parallelogram, Rhombus, Square, or rectangle

Math
Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What are the odds against drawing a club and a diamond?

Math
Three points D, E, and F are collinear. Is there only one plane that contains these three points?

Math
In a certain lottery, five different numbers between 1 and 30 inclusive are drawn. These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same order in which they were drawn. What is the probability of winning?

Math
Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What are the odds against drawing a club and a diamond?

Science
Can anyone fill in the blank? An idea that explains the characteristics of living things? (2 words, 10 letters) Type of cell that helps an animal respond to its environment (5 letters) Plants have different types of cells for different _______. (5 letters)

what is a double consonant?

math
the m's cancel at some point in the equation

math
Consider a disk and spinner with four equal sectors marked with the numerals 1, 2, 3, and 4. What is the expected value for a single spin? If the spinner is spun three times, what is the expected value for the sum of the three numbers spun?

math
The FunTime Amusement park customer load during the summer follows a normal distribution with mean 450 and standard deviation 80. Determine the probability that the number of customers on any given day during the summer will be less than 420.

math
Please help me on this calculus question. I am getting the wrong diff. equation and so my answers to the remaining parts are wrong. ---------------------- A thermometer reading 85 degress outside is brought into a room with a constant temperature of 72 degrees. The rate of ...

math
Great! I finally get it! Thank you...

math
Can you please tell me if I did this right? Or am I way off: What are the odds in favor of getting at a head and a tail in a single toss of two coins? HH TT HT TH 2/4=1/2= 2:1

Sociology- Modern Iran
thanks. Oh and I'm having to a hard time figuring out what the Tehran Spring. I don't know if its the entire reform movement, or just the series of protests that occurred over the 2009 presidential election

Sociology- Modern Iran
I'm doing a presentation on how the youth in Iran respond to the laws and regulations of the Islamic Theocratic regime. However, Im having trouble finding good sources, especially about specific social injustices that are occurring, like what can't they do. So if you ...

Math
Identify the misuse or misrepresentation of statistics: “60% of all college students watch less than 2 hours of television per day.” This conclusion was reached by a college student after she had questioned 520 randomly selected students exiting the library. What is ...

Math
Cool. Thanks for the help!

Physics
We consider a man of mass m = 84 kg as shown in the figure below using crutches. The crutches each make an angle of θ = 26degrees with the vertical. Half of the person's weight is supported by the crutches, the other half is supported by the normal forces acting on ...

College Physics
Box M2 sits atop M1. (M1=25kg M2=15kg). The coefficient of friction between boxes and between M1 and the ground is Uk=.4 and Us=.5. I found that 353N is the maximum force you can apply to box 1 so that box 2 doesn't slip off. Now it asks for the acceleration of M1 and M2 ...

Accounting
Just take the \$5,000 and multiply it by the remaining months. April-December is 9 months so subtract that from 24 to get 15. (5,000*15/24) which should equal 3,125.

history
I have already been to this site and I cannot find an answer to this question.

History
What was the United State's roll in the Mexican Independence?

Math 156
Thank you!

Math 156
On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 32 questions correct. What was the percent of increase?

English
I need a character summery of Bella from Twilight. I haven't read the book, don't have time to. quick little things about her really. thanks,

grammar
In the sentence below is the verb divided transitive or intransitive. We divided the rest of the cake among us.

geometry
what would be the next sequence in george, thomas, abe, alexander,...and why

American Democracy
Its D

Maths
Prove that a number 10^(3n+1) , where n is a positive integer, cannot be represented as the sum of two cubes of positive integers. thanx

Economics
Diminishing return is the stage of production which the increase in input should be stopped. But even in this stage, the employer can still hire a new person if the value of marginal product is above the wage rate. The rule is that P x MP= input price. If the wage rate ...

physics- response to bobpursley
which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and an equivalent amount...

physics
which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and an equivalent amount...

chemistry
The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:

science
thank you very much for your help!! :) <3 <3

science
1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need these answers to study ...

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