# Posts by katie

Total # Posts: 2,141

geography
Why is the Aral sea and the areas surrounding it a significant issue? What problems are the people of this region facing? Im so confused! Thanks!

Algebra
A rectangular field whose length is 34 less than four times its width needs to be enclosed with exactly 122 meters of fencing. What are the dimensions of the field?

Algebra
A wallet contains \$445 in \$5, \$10, and \$20 bills. The number of \$5 bills exceeds the number of \$10 bills by 2, and the number of \$20 bills is 3 less than twice the number of \$10 bills. How many bills of each type are there?

Algebra
The sum of two numbers is 1161. The first number is 183 less than twice the second number. What are the numbers?

math
40% of ___ = 60

Spanish
Ms. Sue know's the nollege behind the answer almost everytime. So if she were to be asked why then she would be able to tell you.

science
What are the similarities and differences between the three major wind systems? Thanks!

math
place brackets in the following statement to make it true 20 - 6 x 2 + 1 = 2

math
place brackets in the following statement to make it true 20-6x2+1=2

math
thanks Ms. Sue.

math
by multiplying the recipicle

math
Anna bought a strip of fabric 10 yd long. She needs a 1 and 1/3 yd piece to make a pillow. How many pillows can Anna make? 10/1 * 3/4 = 7.5

geography
How have natural resources have influenced European economic activity in the past? Thanks!

Math!!
1.a 2. B

TECH ED HELP
Kara is correct just look the quiz I pass it! Here are my answers 1.a 2.A 3.c 100% correct trust me you will pass it

Energy
If the half life of Ir - 131 is 42 days, how much would be remaining after 168 days?

English L.A.
Yes, answer C. It is the one which suits the best. And you may actually have it all written with the help of my favourite online writing service. Go to Marvelous essay service and get the assistance there

literature
In the merchant of venice act 3 scene 5, Antonio quips that the devil can cite scripture for his own purpose (I, iii, l.95). How does the scriptural debate between Launcelot and Jessica serve each character’s purpose? This debate has the potential to explode the harmony ...

SS
I would suggested going back though the lesson and check your text. Also comapre and contrast federal and state giveenment. Cause we are not going to give out answers for you.

SS
I know what the answers are but I am not going to say what they are. What are your answer choices?

Science
chemical property mixture heatcapasity homogeneous viscosity sublimitation physicalproperty compound chemicalformula substance density mass tempurature pressure heterogenerous A _________ property of matter describes its ability to change into different substances.unsure The ...

literature
In the merchant of venice act 3 scene 4, 1. What does Portia tell Lorenzo that she and Nerissa will do? What is their actual plan? 2. 1. How is Portia equipped to portray a man?

literature
In the merchant of venice act 2 scene 2, Portia gives Bassanio the ring with a warning, and Bassanio accepts the ring with his own pledge. How is this contract or bond similar to and different from the one made in Venice? What significance did rings have in Elizabethan England...

chemistry
how many joules of heat are required to heat 149g of aluminum from 31.0 celcius to 75.5 celsius

Algebra 1
The perimeter of a triangle is 36. Find the value of x. Show your work. 2x+1 3x-4

Social studies
It's B

1. (y^4)(y^3) = y^7 2. Y^6 / Y^2 = Y^4 3.5-^3 = 1/125 4. 15^0= 1 5. Y^4 = (y^2) (y^2), Y^6/y^2 AND Y^9/ Y^5. THESE ARE A 100% CORRECT I GOT 7/7 POINTS 100% TRUST ME WILL PASS IT!

biology ms sue

literature
In the Merchant of Venice, What is Shylock’s initial reaction to Launcelot’s leaving his service? I googled it many times, but I couldn't find the answer! Thanks!

literature
In the merchant of venice act 2 scene 4, What does Jessica’s letter say? What is her plan? Why would torchbearers be considered vile? Thanks!

literature
In the merchant of venice, Why do you think there is no Biblical imagery, only mythological imagery, in this scene? (act 2 scene 1) Thanks!

literature
In the merchant of venice act 2 scene 1: Look at the language he uses in ll.1-12 and 22-38. How does the imagery in his speech reflect the Elizabethan perception of Moors? What the heck does that mean? What is Moors?

History
Sherks answers are correct. 100% will pass !

History
Yeah I agree with Sheri is answers are 100% correct. And just wfyi don't trust me. Sue sometimes she can tell you that your answer correct or not. But she is lying because she kind of rude.

Chemistry
The mass of an empty container is 91 g. The mass of the container filled with water is 111 g. What is the volume of the container? The density of water is 1 g/cm3 .Answer in units of cm3 20cm3 016 (part 2 of 5) 1.0 points The container was emptied, dried, and a piece of metal ...

Math @ Steve
So, the answer will be 1:4?

Math
What are the odds of drawing a 5 from these cards? 1,2,3,4,5 I do not understand how to solve this. Thanks

Algebra 2
if p(x)=2x^3+8x^2-7x, find p(3)

Social Studies
1. A and b 2. Wheat farmer, clock maker and gun maker

science
25. Perform the following conversions. (Do your work on scratch paper and then type answer.) A. 105 m = cm B. 2000 mL = L C. 3400 g = kg D. 0.985 km = m E. 2345 mm = m F. 34 kg = g

Social Studies Help
number 1 is correct it is d 2. b trust me

1. is d 2. b trust me

History PLZ HELP ASAP!!!
1. C they walked from Asia to North America over a strip of land that since been covered by the ocean 2. A and c 3. B and c 100% correct

precalc
I don't see how an eigenvalue calculator helps me with #1 and the first part of #2. I also don't know what you mean by "there should be a proof in your text. The discussion about eigenvectors will show that they are a basis for the vector space." Thanks!~

precalc
Given a square matrix M, we say that a nonzero vector v is an eigenvector of M if Mv=kv for some real number k. The real number k is called the eigenvalue of v with respect to M. 1. Let v be an eigenvector of the matrix M with eigenvalue k. Find a simple expression for (M^n)v...

chemistry assignment
(a): You can do that. (b), (c), and (d): Google "accuracy vs. precision" and I think that will help you get on the right track.

Analytical Chemistry
I was able to solve it! Thank you again Dr.Bob! This is the 2nd time you've saved me this semester! I greatly appreciate it! :D

Analytical Chemistry
I was able to do Equation 2 and got 1.58 for b/a ...

Analytical Chemistry
This question pertaining to buffer systems! How would you prepare 10.0mL of 0.0100M phosphate buffer, pH = 7.4 0, from stock solution of 0.100M KH2PO4 and 0.250M K2HPO4, pKa of KH2PO4 is 7.20. Please help me in figuring out how I even start this problem...as well as attempting...

Chemistry
The following soluble salts are strong electrolytes. For each, write a balanced equation for their dissociation in water. NaBr BaBr2 Li3PO4

Chemistry Theory
We are able to "see" the shapes of molecules with X-ray crystallography. However, even without this technology, there is a great deal of evidence that water, H2O, is a bent, polar molecule. Discuss this evidence and explain how it relates to our model of the water ...

Analytical Chemistry
@ Dr.Bob222 Thank you for the help! it is greatly appreciated! However - Do I graph the last number saying Sample and 0.310? Or is that not necessary?

Analytical Chemistry
I am having major issues with this problem and I no clue where to start. It also doesn't help that the professor never taught us how to calculate mass % from data like this... Students in the analytical chemistry class were given a sample of spinach to determine its iron ...

Precalc
Rhombus ABCD, with side length 6, is rolled to form a cylinder of volume 6 by taping side AB to side DC. What is sin(angle ABC)?

precalc
Points A, B, and C are on the circumference of a circle with radius 2 such that angle BAC = 45 degrees and angle ACB = 60 degrees. Find the area of triangle ABC.

Math
Use the value sin x = 1/ 2 and cos x > 0 to find the values of all six trigonometric functions. Leave your answer in exact form, not in decimal

Physics
I've looked at other questions posted like this and can't understand the problem or any of the answers. Could someone please show how to find for Cliff and Will? Cliff and Will are carrying a uniform 2.0m board of mass 75kg. Will is supporting the board at the end ...

Probability
Brenda’s Bike Booth, at the mall, allows people to order a bike in their choice of 4 colors (Atomic Tangerine, Banana, Café Noir, or Dollar Bill) and the options of with or without a basket; with or without a horn. Given all of these options, what’s the ...

Probability :(
Brenda’s Bike Booth, at the mall, allows people to order a bike in their choice of 4 colors (Atomic Tangerine, Banana, Café Noir, or Dollar Bill) and the options of with or without a basket; with or without a horn. Given all of these options, what’s the ...

Algebra
The difference of two numbers is 96 and their sum is 300. Find the numbers. What is the answer for that?

math
Angle = 20 Complement = 70 Supplement = 160

Precalc
Let x and y be real numbers such that x^2 + y^2 = 1. Find the max value of 2x - 5y. A hint was given to use Cauchy-Schwarz but I'm not sure how to apply it to vectors?

Math
Let a, b, and c be unit vectors, such that a+b+c=0. Show that the angle between any two of these vectors is 120 degrees. I proved this geometrically, but now my teacher wants a proof using vectors, and I don't know what to do.

math
How do you find P3, P13, and P15? P10 is obviously (-1, 0), but I'm not sure how you got P2 and how to find the other three points

math
Let P_1 P_2 ... P_18 be a regular 18-gon. Show that P_1 P_10, P_2 P_13, P_3 P_15 are concurrent. I've proved this with a diagram, but the question requires a rigorous proof.

Math
Suppose p and q are points on the unit circle such that the line through p and q intersects the real axis. Show if z is the point where this line intersects the real axis, then z=(p+q)/(pq+1) So far I've figured out that the equation for the line is z=p+t(q-p) but I don&#...

math
You deposit \$400 in a savings account that earns 7% interest compounded annually. What is the function that represents your balance after t years?

math
Find the imaginary part of (cos(12) + i sin(12) + cos(48) + i sin(48))^6.

Math
Please help me with this ASAP! I need help with this just checking my answers thanks 1. There are 14 blue marbles, 8red marbles, and 12 green marbles in a jar. What is the ratio of the total number of marbles to the number of red marbles? A. 24:8 B. 34:8 (my answer) C. 8:34 D...

Chemistry
In a hydrogen- oxygen fuel cell hydrogen diffuses through the cathode. hydrogen and oxygen are mixed before entering the anode.*** oxygen diffuses through the anode. oxygen diffuses through the cathode.

Chemistry
To charge a lead storage battery you must apply a direct current to it. hold a magnet close to it.*** force alternating current through it. increase the pressure on it.

ALGEBRA
Rodney fa fair coin and chooses a ter tiles A, E, I, O AND U. He performs this experiment 50 times to determine the experimental probability that heds is tossed and the letter A is chosen. Whitch o following is st likely to be the experimental probability that Rodney ...

Math
If w^3 = 1 and w != 1, then compute (1 - w + w^2)(1 + w - w^2).

Math
Mike drank more than half te juice in his glass. What fraction of the juice could mike have drunk.

science
If Faraday hd used a more powerful battery in his experiments with electromagnetic induction, what affect would this have had on his galvanometer's measurements of current when the battery was fully connected? explain your reasoning. Thanks again!

science
Describe how turning off the electric current in an industrial magnet affects its magnetic field. Thanks!

Math
And yes I saw this problem on stackexchange but the solution was not very good at explaining it and only gave the math, which is really hard to understand

Math
Let z be a complex number, and let n be a positive integer such that z^n = (z + 1)^n = 1. Prove that n is divisible by 6. I have no idea how to approach this problem!

science
Lesson 9: Energy and the Environment Unit Test Science 7 B Unit 3: Energy and the Environment does anyone have answers to this text C.A

Complex Numbers
Let z and w be complex numbers such that |z| = |w| = 1, and zw is not equal to -1. Prove that (z + w)/(zw + 1) is a real number.

Precalculus
Let z and w be complex numbers such that |z| = |w| = 1, and zw is not equal to -1. Prove that (z + w)/(zw + 1) is a real number.

Math
Let z and w be complex numbers such that |z| = |w| = 1, and zw is not equal to -1. Prove that (z + w)/(zw + 1) is a real number.

Complex Numbers
Let z and w be complex numbers such that |z| = |w| = 1, and zw is not equal to -1. Prove that (z + w)/(zw + 1) is a real number.

Polar, Cylindrical, and Spherical Coordinates
Never mind, I think I get it now

Polar, Cylindrical, and Spherical Coordinates
Sorry, they just seem unclear, and you seem unsure of your final answer... And I didn't think you would respond to the original thread so I resposted

Polar, Cylindrical, and Spherical Coordinates
Let C be a circle that passes through the origin. Show that we can find real numbers s and t such that C is the graph of r = 2s*cos(theta + t) I think that I could start by writing it like R^2=(x-h)^2+(y-k)^2 where R is the radius of the circle, but I don't what to do with...

math
Find the probability of the following event: tossing a coin heads up or rolling a 3 with a number cube. I got: 1/2+1/6 = 2/3 but the right answer is 7/12. I don't understand how to get 7/12. Please help.

Math
tossing a coin tails up or rolling a number less than 4 on a number cube. I got 1/2 + 3/6 and got 1. The answer is 3/4. I don't understand what to do. Please help.

Precalculus
Let C be a circle that passes through the origin. Show that we can find real numbers s and t such that C is the graph of r = 2s*cos(theta + t) I think that I could start by writing it like R^2=(x-h)^2+(y-k)^2 where R is the radius of the circle, but I don't what to do with...

Math
Find the probability of the following event: tossing a coin tails up or rolling a number less than 4 on a number cube. I got 1/2 + 3/6 and got 1. The answer is 3/4. I don't understand what to do. Please help.

Math
Find the probability of the following event: tossing a coin heads up or rolling a 3 with a number cube. I got: 1/2+1/6 = 2/3 but the right answer is 7/12. I don't understand how to get 7/12. Please help.

Math--Parametric Equations
A hockey puck of diameter 3 inches is spinning around its center at a speed of 3 counterclockwise rotations per second. The center of the puck is traveling at a speed of 24 inches per second at an angle of 45 degrees to the positive x-axis. (a) At time t=0, the center of the ...

Social Studies
Are these right?

Math: Trigonometry
Find the sum of the three smallest positive values of x such that 4cos^2(2x-pi) = 3. (Answer in radians.)

Math: Parametric Equations
The graph of the parametric equations x=cos(t) y=sin(t) meets the graph of the parametric equations x=2+4cos(s) y=3+4sin(s) at two points. Find the slope of the line between these two points. So far I've set up the system of equations cos(t)=2+4cos(s) sin(t)=3+4sin(s) but ...

Calculus
An energy drink container in the shape of a right circular cylinder must have a volume of 12 fluid ounces (1 fluid ounce is approximately 1.80469 cubic inches). The cost per square inch of constructing the top and bottom is twice the cost of constructing the lateral side. Find...

Math: Parametric Equations
But that wouldn't be the right answer since it's asking for a length.

Math: Parametric Equations
So would the interval be (-inf, 1] ??

Math: Parametric Equations
Let G be the graph of the parametric equations x = cos(4t), y = sin(6t). What is the length of the smallest interval P such that the graph of these equations for all t E P produces the entire graph G? (The "E" represents the symbol for "is in" that looks ...

Precalculus