Wednesday
April 23, 2014

Posts by Lexi


Total # Posts: 187

quadrilateral and angle sums
what is the measure of a square convex to the nearest degree?

Math
A commercial airplane has a takeoff speed of about 300 km/h. What si the takeoff speed in mi/h?

Math
segment yw is perpendicular to segment xz. the perimeter of triangle xyz is 71 meters. what is the length of segment wz

Math
28, 33, 38

math fractions
how do you put 7/16, 5/8, and 3/4 in order from greatest to least

5th grade math
7/16 5/8 3/4

College Algebra
awesome thanks!

College Algebra
For a test question, a mathematics teacher wants to find two constants a and b such that the test item "Simplify a(x + 2y) − b(2x − y)" will have an answer of -4x + 12y. What constants a and b should the teacher use?

ALGEBRA/ PLEASE HELP
You're right on the first one, but the slope on the second would be 1/5 because 5-0 is 5, not zero. If you come across a slope with the denominator of zero though, it will be undefined.

College Algebra
thank you so much!

College Algebra
Only 34% of the carbon-14 in a wooden bowl remains. How old is the bowl? (Carbon-14 has a half-life of 5,700 years.)

5th grade
your daughter could ask her teacher what all she would need.

College Algebra
Thank you so much!

College Algebra
The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 45 years. (Round your answer to one decimal place.)

math
9+6=___ _ _ 10+__=__ write the sum. show the make a ten fact you used

algebra
find (FxG)(X) and (GxF)(X) when f(x)=5x^2-1 and g(x)=2/x

college
find (FxG)(X) and (GxF)(X) when f(x)=5x^2-1 and g(x)=2/x

Math
what is y-12=16?

college physics
Which of the following statements about special relativity is false? a).The proper length of an object is always larger than the length of the object in a frame where it is moving. b).The proper length of an object depends on the relative speed between the object and an observ...

College Physics
The homework says 3 out of 4 are correct. With 1 being false so that means one of these have to be false.

physics
A novice golfer on the green takes three strokes to sink the ball. The successive displacements are 3.80 m to the north, 1.80 m northeast, and 1.00 m at 25.0° west of south. Starting at the same initial point, an expert golfer could make the hole in what single displacemen...

social studies
WHAT ORESIDENT ORDERED AMERICAN TROOPS TO SEIZE THE PORT OF VERACRUZ IN APRIL 1914?

6th grade/math
I dont understand can you help me? Alicia has made a rectangle using 24 square tiles. If she adds the length and width of her rectangle together, she gets 11. What is the length and width of Alicia's rectangle?

physics
1103.4

Math
Graph each equation by point-plotting 3x-2y=6

10th grade Math
A radio station's signal has a radius of 100 miles. If you drive at a constant speed of 40 miles an hour, nonstop, directly across the diameter of the signal, how long can you listen to the station before the signal fades?

10th grade
The difference between two numbers is 25. The smaller number is 1/6th of the larger number. What is the value of the smaller number?

Chemistry
How could i determine the apparent molal concentration of BaNO3 when the freezing point of the aqueous solution is -2.65 degrees Celcius

10th grade
radio 5 to 3 how many of each one totals 4000?

health
What is social health?

math
vnidsjvnbsdifb wsgyswrgywerygwb GYw

Math
If u have a hundred points and split it into 4 . But you cant use a number more than once. What numbers would you use.

latin
i need help translating this sentance to latin.. "six safe and favorable slaves were standing under their healthy statues and always satisfied the opinion of the cruel syracusans with wisdom"

Graphic Design
Find three examples of this typeface in use today.... I'm lost with this question and I can't find anything. Can you help me?

5th grade -math
what is a range?i thought it was 5

5th grade -math
okay show i need to use a ruler

5th grade -math
name five fraction numbers between 0 and 1?

5th grade math-ms sue
name five fraction numbers between 0 and 1?

5th grade math-ms sue
9 is that correct

5th grade math-ms sue
are you here.

5th grade math-ms sue
ms. sue*****ann and celia have 5 pens, 18 pencils, anf 22 erasers. If they share them equally, how many pencils will each one have?

5th grade math
what is a factor? and can you give me an example

5th grade
MS. SUE***WHAT IS A FACTOR?

5th grade math
Name two fractions equivalent to 4/6

Social Studies
Vietnam War website suggestions?

social studies
Does anyone know some good websites to get information on the effects of the Vietnam war?

social studies
What were the two major alliances in Europe in the years leading up to WWI?

sale price
How do you find sale price? ex. A soccer uniform that normally sells for $45 is on sale for 30% off. Find the sale price.

unit rate
How do you find unit rate? ex. 80/2.5 = x/1

science
Im pretty sure its outer crust, inner crust, mantle, and core. Again, im only pretty sure. I dont have my science text book with me.

math
He is 7 inches short

Math-Functions
wellll you would have to plug in -3 for x. do the rest of the math

calculus
please help with this problem- i've been working for the last 2 hours and can't seem to find a solution the integral of ln(x^2-x+2)

7th grade
1,500 pages in 12 days = _____ pages in 3 days.

3rd grade science
sound is made with matter and

3rd grade science
what is also a form of energy

3rd grade science
what is a form of energy

3rd grade science
what are forms of energy

chemistry
three questions please: (1) What kinds of evidence can you use to determine if a chemical reaction has occurred? (2) How do the properties of the cooked egg differ from the properties of a raw egg? (3) how are the endothermic and exothermic reactions the same? How are they dif...

algebra
(x^2n - y^n)(x^2n -Y^n)

algebra
(x^2n - y^n)(x^2n -Y^n)

math
10x+5y^2+2xy-4y^2+4xy-x3=

Statistics
Problem 2: A random sample of 10 miniature tootsie rolls was taken from a bag, each piece weighed on a very accurate scale. The results in grams were: 3.087 3.131 3.241 3.241 3.27 3.353 3.4 3.411 3.437 3.477 a)construct a 90% confidence interval for the true mean weight. b)wha...

Statistics
I have 2 statistics problems that I've done and felt completely confident with them until I worked the problem a different way and got a different answer. I was wondering if you could tell me if I have the right answers or not. Thanks so much! A certain air plane has 2 ind...

Statistics
What measurement forms normal distribution? Would it be the mean and variance? (avg. and standard deviation) Could you help me please

Statistics
What measurement forms normal distribution?

8th Grade Math
Tom was floating down the river on a raft when, 1km lower down, Michael took to the water in a rowing boat. Michael rowed downstream at his fastest pace. Then he turned around and rowed back, arriving at this starting point just as Tom drifted by. If Michael's rowing speed...

Maths
In a quadrilateral ABCD, angle A = 120 degrees angle B = 140 degrees The bisectors of the angles C and D meet at the point Y. Find the size of the angle DYC

math
The RANGE is the difference between the lowest and highest values. In this case 100 - 80 = 20, so the range is 20. The range tells you something about how spread out the data are. Data with large ranges tend to be more spread out.

Maths - Pigeon-hole principle
Using the Pigeon-hole principle... 91 five-digit numbers are written on a blackboard. Prove that one can find three numbers on the blackboard such that the sums of their digits are equal.

maths
91 five-digit numbers are written on a blackboard. Prove that one can find three numbers on the blackboard such that the sums of their digits are equal.

Maths
When a certain number N is divided by d, the remainder is 7. If the original number N is multiplied by 5 and then divided by d, the remainder is 10. Find d.

8th grade math.
i need help with dividing negative numbers. for example :what is -2/-4.

respost A&P
Dengue fever and Dengue Hemorrhagic Fever (DHF) "Dengue and dengue hemorrhagic fever (DHF) results from infection by any of four serotypes of dengue viruses. Transmission occurs through the bite of infected Aedes mosquitoes, principally Aedes aegypti, which is also the pr...

Anatomy and Physiology paper
I have to do a research paper in A&P please check this over for me and lwt me know what you thinks thanks this what needs to be done Select a single medical disorder. Consult resources other than the course textbook and this study guide. Examples of resources include other tex...

chemistry
This person meant sulfite.

math-algebra
sqrt27xy^3/sqrt9x I'm getting 3 answers to this. yxsqrt3y/x, ysqrt3xy/3x, and 3sqrt3y Can anyone please tell me which one is correct?

Chemistry
The absorbance values At & A0 recorded in the experiment 'Rate Law Determination of the Crystal Violet Reaction' are used in the place of the concentration values of which species A. CVOH B. CV+ C. –OH D. Na+ E. H2O

chemistry
zero and second are right but first is not b, i dont know what it is

chemistry
the question is not answered above!! please help!!

Chemistry
I think half reactions are redox and Pb has the greatest ability to reduce its neutral metal

chemistry
I still don't understand are the reactants on one side of the || and on the other side is products? for the second one there are 2 answers that could possibly work here

science
identify three kinds of nerons that are found in the nervos system?describe how they interact to carry nreve impulse?

math
I had this same question ;) I guess its already been answered

physics
Which truck has more momentum?? 20kg*m/s or 20000kg*m/s??? HELPPP!!!

Social Studies
Can you please help me understand what is meant by "democratic spirit"? Thanks

Chemistry 1 H
AgNO3+ BaCl2-> AgCl+ Ba(NO3)2 a. balence the equasion b. How many grams of silver chloride(AgCl) are produced from 5.0g of silver nitrate (AgNO3) reacting with an excess of barium chloride(Ba Cl2)? c. How Many grams of barium chloride (BaCl2) is necessary to react with 5.0...

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