Thursday
October 23, 2014

Posts by Cathy


Total # Posts: 355

Science
The percent of atmosphere above and below 16.8 km is?
February 23, 2009

Physics
Problem: A hunter shoots an arrow at a deer directly away from him. When the arrow leaves the bow, the deer is at a distance of 38 m. When the arrow strikes, the deer is at a distance of 51.00 m. The speed of the arrow is 65.00 m/s. What must have been the speed of the deer? ...
February 2, 2009

Physics
Problem: A Super Ball is thrown to the ground with an initial downward velocity of 0.70 m/s and pops back up to the hand of the thrower; the total time elapsed is 0.71 s. What height was the Super Ball thrown from? Do I use the formula x = x0 + v0*t-0.5*g*t^2? x0=0 v0=-0.70 t=...
February 1, 2009

college
what is the present tense form of the verb to be in this sentence below the competition date and the prize amount--- still uncertain
January 23, 2009

trig
Thanks again. I really appreciate it.
January 15, 2009

trig
Thanks so much! If I may pick at your brain, how did you know to draw the isosceles triangle at the top and the large triangle inside the octogan to solve this problem.I didn't even consider this.
January 15, 2009

trig
In a regular octagon, AB is a diagonal and CD joins the midpoints of two opposite sides. The side length of the octagon is 4 cm. To the nearest tenth of a cm. find a)AB and b)CD. I'm stumped.
January 15, 2009

Precalculus
2 cm or 4 cm
January 14, 2009

Chemistry
I need help with getting started: 1.The crystal structure of an ionic compound consists of alternating cations and anions lying next to each other in three dimensions. If the cation radius is 55.1% of the anion radius and the distance between the cation nuclei is 587 pm, what ...
November 8, 2008

history
thank you
September 25, 2008

history
how did the romans make books?
September 25, 2008

history
yes, how was art religion and government linked in ancient egypt? thank you
September 21, 2008

history
how were religion,art and government linked to ancient egypt?
September 21, 2008

Env Science
Using a rake instead of a leaf blower Nutrient Recycling :Choosing to have no more than one child Population Control :Walking to class instead of driving Biodiversity :Taking your own reusable bag to the grocery store to carry things home in Recycling :Volunteering in a ...
July 10, 2008

Env Science
Using the 4 principles of sustainability Reliance on Solar Energy, Nutrient recycling, Biodiversity, and Population control. How would you classigy the following? Recycling soda cans :Using a rake instead of a leaf blower :Choosing to have no more than one child :Walking to ...
July 10, 2008

Science Environmental
Using the 4 principles of sustainability Reliance on Solar Energy, Nutrient recycling, Biodiversity, and Population control. How would you classigy the following? • Recycling soda cans • Using a rake instead of a leaf blower • Choosing to have no more than one ...
July 10, 2008

Macroeconomics
Need a helpful website that i can read to help explain the following question. or some insight on this question. Between 1968 and 1980, the US economy experienced a slowdown in productivity growth. However, since the mid 1980s, the economy has experienced increases in the ...
May 15, 2008

macroeconomics
Need a helpful website that i can read to help explain the following question. or some insight on this question. Between 1968 and 1980, the US economy experienced a slowdown in productivity growth. However, since the mid 1980s, the economy has experienced increases in the ...
April 26, 2008

chemistry
Thanks for the tip
April 18, 2008

trig
Describe the changes in the graph of the following funciton t(h) = -2/3sin(h) + 1
April 17, 2008

trig
Describe the changes in the graph of the following funciton h(t) = sin(4/3 - 2t)
April 17, 2008

algebra
5z-20/33 /z-4/121
March 16, 2008

Math
What is the greatest common divisor of 54 and 144?
February 19, 2008

Biology
In peas, tall plants (T) are dominant to short (t), purple (P) is dominant to white flower color (p), and round seeds (R) are dominant to wrinkled seeds (r). What is the phenotype of a plant with genotype TtppRr?
February 18, 2008

writing
My 10 year old son needs to write an essay on municapal gov't and how to educate the youth in the community and get them involved in the services titled "if I were mayor". I am at a blank.
February 17, 2008

algebra
Thank you, but I need to figure out how to put this in an equation form for algebra. I am not good with word problems and need some help.
February 8, 2008

algebra
The following graph shows the enrollment at a community college. 1997 6,000 1998 8,000 1999 10,000 2000 12,000 2001 14,000 what was the increase from 1997 to 2001?
February 8, 2008

algebra math
Hi Ms Sue, I need to write this in equation form.
February 8, 2008

algebra math
The following pie chart represents the results of a survey about whether people in a certain town have cats or dogs as pets. Neither 6% Both 22% Cats only 28% Dogs only 44% If there is 300 people in the town, how many people have neither cats nor dogs?
February 8, 2008

algebra
I am very confused on this, any more help available?
February 7, 2008

algebra
find ordered pairs for x+4y=6
February 7, 2008

Math
What shape's top view is a circle and side view is a triangle?
January 9, 2008

Math
how many outfits can be made from 5 shirts, 6 slacks, 7 ties? I never understand how to do this type of problem.
January 7, 2008

Math
1st Step: Find Least Common Denominator, which is 6. Convert each number to equivalent fraction with denominator 6. 1/3 + (-5/6) + (-1/2) = (1/3)(2/2) + (-5/6) + (-1/2)(3/3) = 2/6 + (-5/6) + (-3/6) Convert all addition operations followed by negative numbers to subtraction of ...
December 19, 2007

maths, variations checking!
Your expression for y is incorrect, try this instead... A) y is inversely proportional to (x-1) if there exists a non-zero constant k such that y = k/(x-1). B) Given that when y=5 x=3, we can solve for k in y = k/(x-1) as follows: 5 = k/(3-1) 5 = k/2 5(2) = k [cross multiply] ...
December 18, 2007

math
Definition of Similar Polygons: Two polygons containing vertices that can be paired so that the corresponding angles are congruent and the corresponding sides are in proportion. ST and XY are corresponding sides. TU and YZ are corresponding sides. By the definition, ...
December 17, 2007

Math
TERMS Consider the expression: 15x + 9ab - 8 - 10ab + 5a + x - b A term can be a number, a variable (letter) or the product of a number and variable(s). Terms can be positive or negative. The sign of the term is determined by the operation directly in front of the term. A term...
December 17, 2007

Math Analysis
Note: small correction to my previous answer... Both occurrences of "rational expression on the right side" should be replaced with just "rational expression".
December 15, 2007

Math Analysis
Subtract the right side from both sides, leaving zero on the right side. [(x-1)/(x+2)] - [x/(x-2)] >= 0 Get common denominator. Multiply first term by (x-2)/(x-2). Multiply second term by (x+2)/(x+2). [(x-2)(x-1)]/[(x-2)(x+2)] - [(x+2)x]/[(x+2)(x-2)] >= 0 Multiply. (x^2...
December 15, 2007

Math
Use the points(0,6200) &(25,10500) to write an equation for the number of housing units needed. Then use the points(0,6500) and (25,6100) to write an equation for the number of affordable units available.
November 27, 2007

english
The right to write begins here.
September 25, 2007

ENGLISH
What do I capitalize? Which is correct in this sentence: California Gold Rush or California gold rush? Please support with the grammatical rule. The decline of whaling in America began with the California gold rush in 1849.
September 25, 2007

Early Child Ed.
I like B. However, if you are trying to talk to the parent without Joshua's presence, be more specific when talking to him. "Joshua, go over to the block center. There are new cars!
September 25, 2007

Word Problem-Icky
Two sailboats are 9.8 miles apart and sailing toward each other. The larger boat sails 4 miles per hour faster than the smaller boat. The two boats pass each other after 0.7 hour. Find the speed of each boat. I cannot figure out for the life of me how to set this one up. I ...
September 17, 2007

Word Problem
I don't understand...do you take 50(t-2)=25*t? If so, I didn't come out with the right answer on question one for the same distance. I just have a hard time understanding these comparison problems.
September 17, 2007

Algebra 2
Two sailboats are 9.8 miles apart and sailing toward each other. The larger boat sails 4 miles per hour faster than the smaller boat. The two boats pass each other after 0.7 hour. Find the speed of each boat. I cannot figure out for the life of me how to set this one up. I ...
September 17, 2007

Algebra 2
The Goodyear Tire Company is testing a new tire. The tires are placed on a machine that can simulate the tires riding on a road. The machine is first set to 60 mph and the tires run at the speed for 7.2 hours. The machine is then set to a second speed and run at this speed for...
September 17, 2007

Algebra 2 (Angel Series)
I'm having trouble understanding the motion comparison word problems. Help!
September 17, 2007

General
I agree. You need to read and re-read the material sometimes before fully understanding the "big picture". I used to cram when I was younger and it only got me C's and sometimes the unthinkable...yikes!
September 17, 2007

pre-algebra
That's correct because it turns out the negatives turn into positives.
September 16, 2007

Diversity
Write a 1,050- to 1,400-word research paper identifying the linguistic, political, social, economic, religious, and familial conventions and/or statuses of four Hispanic groups living in the United States. Your paper should cover Mexican Americans, Puerto Ricans, http://www....
April 10, 2007

physics
A 17.0 kg child travels down a playground slide 3.50 m high and reaches the bottom with a speed of 2.50 m/s. How much heat was generated due to friction as a result of this process? my teacher hadn't taught anything about heat..but he did give us this question, thus, i got...
February 23, 2007

math (algebra one )
Write an equation of the line that passes through each point with the given slope. (-3,-4) ,m=3 a. y=3x+13 b.y=3x-5 c.y=-3x+5 d.y=3x+5 ?? The general equation for a sraight line is in the form y=mx+b where m is the slope and b is the y intercept. You are given m, Plug -3 in ...
November 29, 2006

math
I was just wondering, if a series of numbers has 8 digits and the 1st digit is always 3, how many possible combinations of this number could there be. I am certain I once learned this in a math class years ago, but cannot remember how to calculate it. Help would be greatly ...
November 24, 2006

ethnics help
Use five medical words discussed in this week’s reading to create a SOAP note. Respond to other students by adding anything they may have missed, correcting any errors, complimenting them on proper usage, or expanding on the details of the SOAP note. Be sure to use a ...
November 2, 2006

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