Posts by hannah
Total # Posts: 3,512

geography>3
my textbook says that, for example, water pollution can be caused by air pollution because rain washes chemicals out of dirty air and into bodies of water. 
geography>3
is it the water cycle? 
geography>3
anyways, is sewage, chemical fertilizers, oil spills the answer? 
geography>3
i have more than one question... 
geography>3
oops! i meant to write "what natural processes spread pollution from its point of origin?" 
geography>3
what natural processes spread creating a new region? 
geography>3
oops! okay! sorry! 
geography>3
i have some more questions to ask you but thank you for helping me with this one! 
geography>3
oh! okay i think i get it now...so then what you're basically saying is true,that by having similar laws, currency, and economies, the european union is creating a new region? 
geography>3
i don't get it... 
geography>3
in what way is the european union creating a new region? 
geography
are you a teacher? 
MAT 102
What is the domain of "p" when p(x)=x squared2x+4 
world history
What role did the Greeks play in the creation of the Maurya Empire? 
Genetics
Albinism is inherited as a simple recessive trait. If a woman and her husband are both heterozygous for albinism then what is the probability that their first five children will have these phenotypes? Child 1  albino; child 2  normal; child 3  normal; child 4  albino; ... 
Geometry
@steve it is asking what is x 
Geometry
If BC bisects angle ABD, and angle abc=5x+11 angle CBD=10x4 a.5 b.3 c.1 d.2 
English
What literary devices does this sentence pertain to? Love enfolded us in her arms. 
Chemistry
A vessel containing 39.5 cm3 of helium gas at 25°C and 106 kPa was inverted and placed in cold ethanol. As the gas contracted, ethanol was forced into the vessel to maintain the same pressure of helium. If this required 18.8 cm3 of ethanol, what was the final temperature ... 
algebra2
solve the equation a12/ac=2b solve for a 
statistics
Most Americans, 67% in fact, say frequent handwashing is the best way to fend off the flu. Despite that, when using public restrooms, women wash their hands only 66% of the time and men wash only 43% of the time. Of the adults using the public restroom at a large grocery ... 
math
james works an average of 22 hours per week with a standard deviation of 3.5 hours. what percentage of the time does james work more than 31 hours per week? 
Physics
You know the angles by the "north," "northeast," and "30 degrees west of south" (180+30) 
math
5* 5=25 
Calculas
A book designer decided that the pages of a book should have 1in. margins at the top and bottom and 1 2 in. margins on the sides. She further stipulated that each page should have an area of 52 in.2. Find a function in the variable x, giving the ... 
Calculas
A book designer decided that the pages of a book should have 1in. margins at the top and bottom and 1 2 in. margins on the sides. She further stipulated that each page should have an area of 52 in.2. Find a function in the variable x, giving the ... 
Math
Hannah has $120. Hannah and Peter have $230. Peter has 6 times as many money as Francine. How much money does Hannah have 
Math
On January 1, 2010, an investment was worth $1000. By the end of 2010 the investment had lost 30%. What percent must the investment grow by in 2011 to be worth $1000 by the end of 2011? Round your answer to the nearest tenth of a percent. 
chem
Oh it is. It's especially bad when people waste my time with their replies that are of no use to me :) 
Chemistry
8. Imagine you have two containers of gas, one labeled gas A and one labeled gas B. Gas A has an average speed of 700 m/s and gas B has an average speed of 1100 m/s. Both containers are being held at the same temperature. How could you match the average speeds of gas A and gas... 
chemistry
4. A container of gas has a volume of 3.5 L and a pressure of 0.8 atm. Assuming the temperature remains constant, what volume of gas would result if the pressure was 0.5 atm? A. 1.8 L B. 5.6 L C. 0.2 L D. 2.2 L My guess is B but I just want to double check 
Chemistry
1. What is the mass of the 3.7 mol PbO2? A. 884 g PbO2 B. 65 g PbO2 C. 0.15 g PbO2 D. 825 g PbO2 I honestly have no guess for this one. Can anyone tell me how to do it? 
Algebra
Twenty ounces of water are removed from a container and 3/4 of the original remains. How much water did the container have originally? 
Math
Hi, I need some help with this question. Could anyone help? Tammy has 15 coins that total $1. What coins does she have and how many of each? Is there more than one answer? Find all the possibilities. Thanks, Hannah 
Math
If I add all the numbers from 1100 what do I get? This question has been confusing me for a while... 
Chemistry
7. Which of the following is true? A. Cesium is the most active group 1 metal, because its valence electron is held more tightly than the others in the same group. B. Group 1 elements are more reactive than the group 2 elements because they have more valence electrons to lose... 
Chemistry
15. When chromium loses two electrons, its configuration changes to A. [Ar]4s1. B. [Ar]3d4. C. [Ar]4s13d5. D. [Ar]4s13d4. I'm guessing it's B but I just want to double check 
Math
Hi! I need some help with a problem in the packet I have to complete over the summer. Can anyone help? at uncle joe's farm there are chickens and sheep. tommy counted the heads and got a total of 12 heads. then he counted feet and got a total of 38. can you figure out how ... 
physics
a 2.00 kg rock is dropped from a bridge to the water 50.0m below. what is the velocity as it hits the water? what is its kinetic energy as it hits the water? 
Analytical chem
SPECTROPHOTOMETRIC ANALYSIS OF STEEL I have a known molarity of KMnO4 solution. It was diluted by a factor of 20. Its absorbance is now 1.18. The length of the path is 1 cm.What is the molarity of the new solution. 
chemistry
Atoms of the group 15 elements tend to react to form _______ ions. A. 5+ B. 32 C. 52 D. 3+ My guess is D. Which is correct? 
Economics
Anybody know the answer?? 
Trigonometry
Solve the triangle using the law of cosine: a= 5 b= 6 y= 35 
Trigonometry
Could someone please help me out with this? I've read my text book, but can't seem to figure it out. And could you please show me how to do them? The Earth travels in a circular orbit around the Sun at 29.79 km/sec. If the radius of the orbit is 1.496 x 10^8 km, what ... 
science
if a person puts 500 newtons into pushing an immovable wall that was 2 meters tall how many joules of work would they do 
social studies
What are the responsibility's of the department of education 
social studies
what is the responsibility's of education? 
social studies
What is the responsibility's of the department of energy 
english
One way we get to know characters is to want to avoid the most. Select TWO characters from Julius Caesar and write short essays on what you believe they fear the most and what evidence you used to come to this conclusion. any ideas 
geometry need asap
A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the sides on the bottom are 2 inches for the base and the height is 7 inches 
geometry
A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the sides on the bottom are 2 inches for the base and the height is 7 inches 
geometry
I need to find the height and volume of a triangular prism. the front measures 8 cm and the side is 19 cm. 
geometry
Find the surface area of the cone. in pie the radius is 3 cn the height is 18 
geometry
I need to find the base, height, and volume of a triangu;ar prism. the front is 8 cm and the side bottom line is 19 cm 
geomerty
please help 
geomerty
A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the base is 2 in and 2 in the height is 5 in then the triagle is 2 in. There is a line between the h 5 and the 2 
geometry
A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container. The base has the front and sides as 2 and 2 inches the height is 5 in and the 2 inches. 
geo
geometry 
geo
help please 
geo
I need to find the the height of the prism, the volume of the prism, and the area of the base. The front has a measurement of 8 cm and the line on the side has 19 cm. can you please help me. 
geo
how do you find the base of a triangular prism > 
geometry
these are the answer I have to pick from for volume 1088/3 pi feet cubed 960 pi feet cubed 320 pi feet cubed 1088 pi feet cubed 
geometry
Find the area of the base and the volume of a cone. the height is 17 and the radius is 8. my answer needs to be in pie 
geometry
I need to find the area of a base of a cylinder. The height is 9 and the radius is 3. 
geometry
12 x 15 x 7 =450 would it be 2.8 galloons 
geometry
12x 12 x15x15 
geometry
The floor of a bedroom is 12 feet by 15 feet and the walls are 7 feet high. One gallon of paint covers 450 square feet. How many gallons of paint do you need to paint the walls of the bedroom? 
geomerty
a= 2 x 3.14x 1 x 12 a = 75.36 a = 2 x 3.14x 8 x 3 a= 150.71 roller B 
geomerty
Paint Roller A has a length of 12 in. and a diameter of 2 in. Paint Roller B has a length of 8 in. and a diameter of 3 in. Which roller can spread more paint on a wall in one revolution 
geomety
128 feet 
geomety
You want to pour a concrete slab with a width of 16 feet, a length of 16 feet, and a height of 0.5 feet. Find the volume of the concrete, so you know how much you will need 
geometry
sa =4 x 3.14x 9^2 sa = 324 pie 
geometry
Find the SURFACE AREA of a sphere that has a diameter of 18 centimeters. Leave your answer in terms of pi. 
Halfway solvedcalc
Oh, so that value is to be added. Okay, thank you! 
Halfway solvedcalc
Wow, thank you so much! But I'm wondering where the + 1 for the R and r, comes into play? 
Halfway solvedcalc
So I'm trying to solve this problem but one thing I don't get is, how do I know which method to use just by looking at the graph (disk, washer, or shell)? Find the volume of the solid generated by revolving the region bounded by the graphs y=x^2 4x+ 5 and y= 5x about... 
Math
I absolutely understand this now. Thank you so much. I really couldn't have done it without your help Steve. 
Math
No there wasn't. This is exactly the problem our substitute gave us, and I was having a hard time figuring out why that was so. Do they not intersect at (2, 0) as well? I was told this answer is incorrect as well (1/4). I'm perplexed. :S 
Math
3) Find the area bounded by the curves f(x)= x^3 + x^2 and g(x)= 2x^2 + 2x. I get 4653pi/105 after help from Mr. Reiny, but this is wrong. Have I calculated incorrectly? Thank you 
integral calculus
I'm sorry about that. Can you explain why there is an error Mr. Pursley? I genuinely don't understand how there is an error. 
integral calculus
let u=x^2 du= 2x dx dx=du/2x dx=du/2sqrt(u) 1/4 cos u is the integral 
Calculus
3) Find the area bounded by the curves f(x)= x^3 + x^2 and g(x)= 2x^2 + 2x. I get 4653pi/105 after help from Mr. Reiny, but this is wrong. Have I calculated incorrectly? Thank you 
Calculus
I did it and I get 4653pi/105 but this is wrong. Have I calculated incorrectly? 
Calculus
Thank you very much Reiny. I understand it a bit better now. 
Calculus
We're learning disks, shells, and cylinders in school but we have a substitute and I've been trying to teach this to myself. Can you check them please? =) Thank you! 1) Find the volume of the solid formed when the region bounded by curves y=x^3 + 1, x= 1, and y=0 is ... 
Calculus
We're learning disks, shells, and cylinders in school but we have a substitute and I've been trying to teach this to myself. Can you check them please? =) Thank you! 1) Find the volume of the solid formed when the region bounded by curves y=x^3 + 1, x= 1, and y=0 is ... 
biology
ap biology lab what barriers might hinder the acquisition of plasmids 
bio
I am doing the biology ap bacteria DNA transformation lab and I came up with a transformation efficiency of 150,000. I read somewhere that they should be between 2,0008,000. is my answer way off? My group counted an average of 1529 colonies to begin with so i don't see ... 
geometry
AB= ft2 CB = ft l (slant height) = ft S = ft2 I need to find the answers this is a cone with a radius of 5 and a height of 13. Thank you 
math
I need to find the A small b, C small b, slant height, and surface area of a cone. The height is 9.2 and radius is 5.6. Please help 
math
The Transamerica Pyramid in San Francisco is shaped like a square pyramid. It has a slant height of 856.1 feet and each side of its base is 145 feet. Find the lateral area of the building. 
geometry
The Transamerica Pyramid in San Francisco is shaped like a square pyramid. It has a slant height of 856.1 feet and each side of its base is 145 feet. Find the lateral area of the building. 
geometry
Find the surface area of a cone with diameter 27 m and slant height 19 m. Leave your answer in terms of pie 
math
Find the surface area of a cone with diameter 27 m and slant height 19 m. Leave your answer in terms of . Note: You do not need to include in your answer 
math
The Transamerica Pyramid in San Francisco is shaped like a square pyramid. It has a slant height of 856.1 feet and each side of its base is 145 feet 
gov
what was the lower courts decision of the terry v.s ohio case? 
math
7 inches is across the top of the can and 5 goes up and down. 
math
can you pleae explain how to do this? 
math
a cylinder can of coca has the dimensions of base 7in and height 5 inches. what is the approximate surface area available for the label? 
math
197.8