Homework Help: Health: First Aid

Recent Homework Questions About First Aid

Biology
PLEASE HELP!!!! 1. How many millions of years ago did sharks first appear? (Make sure you are looking for animals that only have cartilage skeletons). 2. How many millions of years ago did bony fish (like the perch) first appear? 3. How many millions of years ago did ...
Sunday, April 14, 2013 at 4:39pm

Java programming
can anybody help me.. Multidimensional Array Use a two-dimensional array (for example of 3 by 3) to simulate the addition operation of two matrices. Sample output: the first matrix: 1 2 3 1 0 1 1 2 1 the second matrix: 1 1 1 2 2 2 3 3 3 The total of two matrices: 2 3 4 3 2 3 5...
Sunday, April 14, 2013 at 2:50pm

math
On an air track, a 403.0 glider moving to the right at 1.70 collides elastically with a 500.5 glider moving in the opposite direction at 3.00 . 1. Find the velocity of first glider after the collision. 2. Find the velocity of second glider after the collision.
Sunday, April 14, 2013 at 2:19pm

U.S/history AP
A)-Outspken proponent of women's rights and helped the below women organize the seneca falls convention. B)a prominent advocate of women's rights.She organized the seneca falls convention with the person above.Her husband wholeartedly supported her views and attended ...
Sunday, April 14, 2013 at 10:51am

Physics
On an air track, a 403.0 glider moving to the right at 1.70 collides elastically with a 500.5 glider moving in the opposite direction at 3.00 . 1. Find the velocity of first glider after the collision. 2. Find the velocity of second glider after the collision.
Sunday, April 14, 2013 at 10:22am

algebra
Select the first five terms in the arithmetic sequence an = 6n, starting with n = 1.
Saturday, April 13, 2013 at 9:25pm

math
Select the first five terms in the geometric sequence an= (2)^n-1, starting with ^n=1
Saturday, April 13, 2013 at 9:23pm

World History
In what ways did Islam create the first “world civilization?” How was Islam changed by contact with indigenous faiths in Africa & Asia? How did Byzantium preserve & perpetuate the traditions of Rome? What roles did commerce play in the transmission of faiths in the ...
Saturday, April 13, 2013 at 6:05pm

business
Healthy Options is a Pharmaceutical Company which is considering investing in a new production line for its pain-reliever medicine for individuals who suffer from cardio vascular diseases. The company has to invest in equipment which costs $2,500,000 and falls within a CCA tax...
Saturday, April 13, 2013 at 4:11pm

math
Suppose A is the set of students registered at the University of Calgary, and C is the set of courses currently being offered at the University of Calgary. Under what conditions is each of the following a function? a) {(a, c) | a’s first class each week is in c} b) {(a, c...
Saturday, April 13, 2013 at 3:28pm

math
24874divided by 17 ,which digits should one change in the first number to increase the answer by 100
Saturday, April 13, 2013 at 6:47am

LITERACY
When books are arranged in correct order on the shelves by call number, which of the following call numbers will be first? A. D 839 .G3 1987 B. D 839 .G42 2004 C. DE 82 .A49 2006 D. DA 546 .L74 1986 answer a?
Saturday, April 13, 2013 at 1:52am

MATHS!!!Please HELP..:'(
Raj and Vikram are two travelers in ancient India, walking along the Silk road. On the first day of travel, Raj travels 5 yojanas, and on each successive day travels 3 yojanas more than the previous day. Vikram started at the same place and travels the same path, but started 5...
Friday, April 12, 2013 at 11:49pm

math
If the first of 1000 consecutive whole numbers is odd, their sum must be a) even b) odd c)prime d) negative Help?
Thursday, April 11, 2013 at 10:26pm

Science URGENT~
1. Your ____ is your first line of defense against pathogens. (1 point) brain heart large intestine skin 2. Blood vessels help regulate your body's temperature. When it's cold, your blood vessels ____ to decrease blood flow and retain heat. (1 point) boil constrict ...
Thursday, April 11, 2013 at 9:57pm

Math
Jeremy got scores of 93,82,91, and 88 on his first four math test. What score must he get on the fifth test to have an average test grade of 90 for the five test ? Can someone explain step by step. Please
Thursday, April 11, 2013 at 9:51pm

English
1. Which of the following would not be a helpful audiovisual aid for a presentation on drought? a poster on the effects of drought in regions around the world a short video of a farmer talking about the difficulties caused by drought an icebreaker cartoon that you think is ...
Thursday, April 11, 2013 at 8:16pm

Algebra
Raj and Vikram are two travelers in ancient India, walking along the Silk road. On the first day of travel, Raj travels 5 yojanas, and on each successive day travels 3 yojanas more than the previous day. Vikram started at the same place and travels the same path, but started 5...
Thursday, April 11, 2013 at 7:40pm

Geometry(first one is typo)
Let ƒÆ=sin −1 7/25 . Consider the sequence of values defined by a n =sin(nƒÆ) . They satisfy the recurrence relation a n+2 =k 1 a n+1 +k 0 a n ,n¸N for some (fixed) real numbers k 1 ,k 0 . The sum k 1 +k 0 can be written as p q , where p...
Thursday, April 11, 2013 at 6:56pm

english.. aka ELA
When writing the first sentence and introduction, what do you do so the reader knows you understand your task?
Thursday, April 11, 2013 at 5:21pm

HIGH SCHOOL DIPLOMA - Writing Skills 1
1. Which of the following is correct in regard to the use of formal English? A. Formal English is used more frequently in speaking than in writing. B. In formal business correspondence, it's best keep the language impersonal. C. Contractions are considered acceptable in ...
Thursday, April 11, 2013 at 4:25pm

Calculus
The speed of a runner increased steadily during the first three seconds of a race. Her speed at half-second intervals is given in the table below. Find lower and upper estimates of the distance she covered during the first three seconds of the race. Use left- and right- ...
Thursday, April 11, 2013 at 2:03pm

Math
Two investments are made totaling $4800. In the first year they yield a total of $412 in simple interest. Part of the money is invested at 8% and the rest at 9%. Find the amount invested at each interest rate.
Thursday, April 11, 2013 at 1:25pm

LA
Here is a proposal that is sure to anger some people: Everyone— yes, everyone—should have a pet. I think we should require that everyone get a pet or else present a convincing reason why they can’t have one. There are almost too many arguments in favor of ...
Thursday, April 11, 2013 at 12:03pm

calculus
Find the specified coordinates of the centroid of the area bounded by a) x=3 and 2x=y^2 find the coordinates x and y of the centroid b) y= x^3 and y=4x in the first quadrant. Find the x coordinate of the centroid
Thursday, April 11, 2013 at 12:33am

Algebra
A 180-m wire is cut into three pieces. The third piece is 20 m longer than the first. The second is two thirds as long as the first. How long is each piece?
Wednesday, April 10, 2013 at 11:28pm

social studies
Why did we go through all of the trouble of landing on the moon in the first place? Why didn’t we use the money we spent going to the moon on improving the conditions of poor people here in the United States?
Wednesday, April 10, 2013 at 9:29pm

LAng Arts
Here is a proposal that is sure to anger some people: Everyone— yes, everyone—should have a pet. I think we should require that everyone get a pet or else present a convincing reason why they can’t have one. There are almost too many arguments in favor of ...
Wednesday, April 10, 2013 at 7:46pm

Ms. Sue LAng arts
HI im going to have like 10 questions of these and plz check my answers. thx here is the story: In Praise of Companion Animals Here is a proposal that is sure to anger some people: Everyone— yes, everyone—should have a pet. I think we should require that everyone get...
Wednesday, April 10, 2013 at 7:35pm

English
Thank you! I left out these sentences on Owen's life. Thank you. 1) Wilfred Owen enlisted as a soldier in 1915. During his first mission in France, he spent some time in hospital to recover from shell shock. 2) There, he met poet Siefried Sassoon who read his poems and ...
Wednesday, April 10, 2013 at 6:32pm

Social Studies
Sometime around the 1880s European countries, for a variety of reasons, began to take control or colonize some area in Africa and Asia at an alarming rate. The expansion of European power in this period took many forms, but no matter the form it had greed at its center. There ...
Wednesday, April 10, 2013 at 6:04pm

English
Can somone check if my sentences on Owen's poem "Dulce and Decorum est" are correct? Thank you very much The title of his 1917 poem Dulce et Decorum Est translates to “It is sweet and right” – a direct quotation from Ode, written by Latin poet ...
Wednesday, April 10, 2013 at 5:03pm

Physics
When a converging lens is used in a camera (as in the first drawing), the film must be placed at a distance of 0.240 m from the lens to record an image of an object that is 4.30 m from the lens. The same lens is then used in a projector (as in the second drawing), with the ...
Wednesday, April 10, 2013 at 3:33pm

Math
In the first quarter of a football game ,a quarterback threw for 25 yds and was sacked for -36 yds.What was the quarterback's total yardage for the first quarter?
Wednesday, April 10, 2013 at 10:01am

To rbowh
I don't understand how w-8+8=26+8.wouldn't the first blank be 0?
Tuesday, April 9, 2013 at 8:52pm

physics
Two Bals. of masses mA = 45 grams and mB = 65 grams are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released: ----------------------------- /| | - /è| | | / | | | 30 cm / | | | mA | | | mA mB - where è = 66 ...
Tuesday, April 9, 2013 at 6:49pm

Math
Bill earns 1 dime the first day, 2 dimes the second day, 3 dimes the third day, 4 dimes the fourth day, etc. How many days will it take him to earn $2.
Tuesday, April 9, 2013 at 4:51pm

social science statistics
a professor was curious to whether the students in a very large class she was teaching who turned in their first scored differently from the overall mean on the test.The overall mean score on the test was 75 with a standard deviation of 10;the score were approximately normally...
Tuesday, April 9, 2013 at 11:33am

maths - two dimensional motion
The problem I am trying to solve is from AQA Mechanics M1 and is as follows: An object is moving in a plane. At time t=0, it is at the origin, O, and moving with velocity u. After 2 seconds it is at A where OA = -2i - 4j. After a further 3 seconds it is at B where AB = 10i - ...
Tuesday, April 9, 2013 at 9:09am

math
The problem I am trying to solve is from AQA Mechanics M1 and is as follows: An object is moving in a plane. At time t=0, it is at the origin, O, and moving with velocity u. After 2 seconds it is at A where OA = -2i - 4j. After a further 3 seconds it is at B where AB = 10i - ...
Tuesday, April 9, 2013 at 5:14am

Chemistry
When looking at a titration curve, I have to determine which is false and I have it narrowed down to two options: The initial starting point on the titration curve is where pH depends only on [HA]0 or The finial point on a titration curve the pH depends only on [A-] I would ...
Tuesday, April 9, 2013 at 12:16am

physics
A student, crazed by the first physics Midterm, uses a pushing force of 80 N angled at 70° to push a 5.0 kg book across the frictionless ceiling of his room. a. What is the block's acceleration? b. What is the force of the ceiling on the book?
Monday, April 8, 2013 at 10:30pm

physics
A long horizontal wire carries a current of 48A . A second wire, made of 2.6mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15cm below(Figure 1) . Determine the magnitude of the current in the lower wire.
Monday, April 8, 2013 at 9:44pm

Newton's Laws
1. An 1760 kg car is moving to the right at a constant velocity of 2.94 m/s. (a) What is the net force on the car? (b) What would be the net force on the car if it were moving to the left? 2.A freight train has a mass of 6 107 kg. If the locomotive can exert a constant pull of...
Monday, April 8, 2013 at 7:53pm

stat probability
A coin is tossed 4 times. Find the probability that the 4th toss is a tail, given that the first 3 tosses were all heads.
Monday, April 8, 2013 at 7:35pm

Chemistry
First, the question I'm given is: What is the pH of a 1.0 L solution containing 0.25M acetic acid and 0.75M sodium acetate ( Ka for acetic acid= 1.8x 10-5) So I took the -log(1.8x10-5)= 4.74+log(.75/.25)= 5.22 pH But then I'm asked if .050 mol NaOH is added to the ...
Monday, April 8, 2013 at 7:01pm

Physics
A long horizontal wire carries a current of 48A . A second wire, made of 2.6mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15cm below(Figure 1) . Determine the magnitude of the current in the lower wire.
Monday, April 8, 2013 at 6:57pm

math check answer
1. Which of the following is an example of a dependent event? flipping two coins rolling a number cube and spinning a spinner choosing two scoops of ice cream **choosing a cookie at random, eating it, and then choosing another at random 2. Which of the following is an example ...
Monday, April 8, 2013 at 6:27pm

SS Please check answers
1. The admission of Missouri as a slave state was controversial in the Senate because the Senate was pro-slavery. it would create sectionalism. **it would upset the balance. the Senate was anti-slavery. 2. The main topic of the Lincoln-Douglas debates was Western territories. ...
Monday, April 8, 2013 at 5:37pm

Physics, diffraction
1. Yellow light of wavelength 580 nm shines on a diffraction grating with 4000 lines/cm. A.At what angles do the first-order and second-order maxima occur?
Monday, April 8, 2013 at 12:53pm

English (Check Please)
1. The speaker’s use of many exclamation points and imperative statements in “Beat! Beat! Drums!” helps readers feel the tone’s (Points : 3) humor. urgency. quiet calm. high spirits. 2. With what kind of life are the images in the second stanza of “...
Monday, April 8, 2013 at 12:11pm

Chemistry
If you wanted to prepare 50.0 mL of hydrogen, collected over water at 25 C on a day when the barometric pressure was 730 torr, what mass of aluminum would you react with a hydrochloric acid? (Balance the equation first.) ___Al(s)+___HCl(aq)=___AlCl3(aq)+___H2(g)
Monday, April 8, 2013 at 12:05pm

Chemistry
What volume of hydrogen, measured at 25 C and 1.00 atm can be produced by dissolving 5.0 g of magnesium in hydrochloric acid? (Write and balance the equation for the reaction first.)
Monday, April 8, 2013 at 12:00pm

World Geography
1.The physical feature of Western Europe where most major cities are found is called A. the plains. B. the glacier.<<<<<<< C. the tundra. D. the taiga 2.The Magna Carta was the first step toward England’s ______________. A. large cities B. war with ...
Monday, April 8, 2013 at 11:52am

Economics
Use the concepts of marginal cost and marginal revenue to derive an optimal capital budget for Company X, which has identified 7 possible investment projects and determined its cost of capital as shown below. Table A: Alternative Projects, Required Investments, and Expected ...
Monday, April 8, 2013 at 5:58am

LBCC
A coin is tossed 4 times. Find the probability that the 4th toss is a tail, given that the first 3 tosses were all heads.
Sunday, April 7, 2013 at 11:15pm

in what order comes
This is highly advanced qquestion. You have a basket draw, and you have 14 balls left form 39 balls and 5 number will comes out next, would you be able to calculate which balls comes after sixth. It could be in any combo: for example: first draw 1 2 3 4 5 second draw 6 7 8 9 ...
Sunday, April 7, 2013 at 10:44pm

math
Jeanna wants to buy a new boat for her family. She has two payment options. The first option is to pay a cash payment of $7,200. The second option is to finance the boat with a three-year instalment loan. The loan requires a 10% down payment and 36 equal monthly payments of $...
Sunday, April 7, 2013 at 8:49pm

math
A rocket takes off vertically at time t=0, and during the first 10 s of flight its acceleration in m/s^2 is given by a(t)=10t-t^2 find the height reached by the rocket after 10s.
Sunday, April 7, 2013 at 3:13pm

Pre-Algebra
Find 3 consecutive positive integers such that the product of the first and third, minus the second, is 1 more than 5 times the third.
Sunday, April 7, 2013 at 2:29pm

Science
Phenylketonuria (PKU) is a human metabolic disease caused by the recessive allele k. If 2 heterozygous carriers of the allele marry and plan a family of five children: a) what is the chance that all their children will be unaffected? b) what is the chance that four children ...
Sunday, April 7, 2013 at 2:05pm

physics
A current I=2 Amperes flows in a circular single loop coil of radius R=10 cm. (a) Evaluate the magnitude of the magnetic field (in Tesla) at a point P on the axis of the coil, and a distance z =5 cm away from the plane of the coil itself. Now consider two N-turn circular coils...
Sunday, April 7, 2013 at 1:39pm

Chemistry
When looking at a titration curve, I have to determine which is not true and I have it narrowed down to two options: The initial starting point on the titration curve is where pH depends only on [HA]0 or The finial point on a titration curve the pH depends only on [A-] I would...
Sunday, April 7, 2013 at 6:08am

grammar English
I am writing about interviewing Deaf Persons for my ASL research paper. The first person is Christian DeGuzman. He is profoundly deaf since birth, and about 2 or 3 years old later they found out that he was deaf that’s why. Christian grew up in Bay Area, went to ...
Saturday, April 6, 2013 at 10:21pm

ACC 400
Case 13-4 Application of SFAC No. 13 On January 1, 2006, Lani Company entered into a non cancelable lease for a machine to be used in its manufacturing operations. The lease transfers ownership of the machine to Lani by the end of the lease term. The term of the lease is eight...
Saturday, April 6, 2013 at 10:09pm

Chemistry
A sample of aluminum oxide, Al2O3(s), contains 8.29*10^25 total atoms. Calculate the amount in moles of aluminum oxide in the sample. Hint: This is a two-step problem. Calculate the number of formula units first.
Saturday, April 6, 2013 at 9:35pm

math
The 9th term of an AP is 8 and the 4th term is 20. Find the first term and the common difference.
Saturday, April 6, 2013 at 9:21pm

math
There are 3 reds, 4 blues, 6 whites and 5 yellows in a bag. What is the probability that the first two you draw are both red if you do not replace the first one?
Saturday, April 6, 2013 at 1:36pm

Physics
For parts A-C: /^Vo | 2M | velocity into pg. ->R )2m ) ------ top view rear view A car of mass, 2m, is going around a turn at a constant radius, R, with velocity, v0. The turn is not banked – it is a flat surface. Assume the car and the road are on Earth’s surface...
Saturday, April 6, 2013 at 1:00pm

Physics
For this problem, you are allowed to consult with other members of the class, but not with faculty and not with anyone outside the course. Simplify all your expressions. A car of mass, 2m, is going around a turn at a constant radius, R, with velocity, v0. The turn is not ...
Saturday, April 6, 2013 at 12:48pm

History 204 american history 1865-present
Gradually, over the first two decades of the 20th century, the suffrage movement gained momentum. Which of the following women was least associated with this movement over its entire history dating back to the 19th century? Carrie Chapman Catt, Alice Paul, Susan B. Anthony, ...
Saturday, April 6, 2013 at 11:22am

chemistry
I'm trying to figure out what went wrong during my freshman chem lab. We were figuring out the enthalpy of formation of MgO(s). MgO(s) + 2H+(aq) -> Mg2+(aq) + H2O(l) dHrxn = -334.83kJ/mol Mg(s) + 2H+(aq) -> Mg2+(aq) + H2(g) dHxrn = -1105kJ/mol H2(g)+ 1/2O2(g) -> ...
Friday, April 5, 2013 at 11:27pm

math
row a;1,2,3,4,5............................rowb;1,2,4,8,16...........................row c;2,4,7,12,21.........................what is the first entry in row c which is greater than 100 is most likely to be ?
Friday, April 5, 2013 at 11:05pm

math
tom,jack and joe are the fastest runners in the school.if they race one another,without dead heats,how many combinations can they finish in if they occupy the first 3 places ?
Friday, April 5, 2013 at 11:00pm

algebra
One car travels 105 miles in the same amount of time it takes a second car traveling 6 miles per hour slower than the first to go 87 miles. What are the speeds of the cars?
Friday, April 5, 2013 at 10:19pm

MATHs
The three terms x+12, 3x+5 and 2x+25 are the first three terms of an arithmetic progression. What is the value of x?
Friday, April 5, 2013 at 8:35pm

Art answer check
1. Ann Hamilton's "Indigo Blue" is an example of what kind of art? Feminist Art Action Painting x Installation Art Video Art 2 The events in contemporary Iran give this artist context for films and videos by this artist: Wemda Gu x Shirin Neshat Zaha Hadid El ...
Friday, April 5, 2013 at 6:16pm

Physics
Light with a wavelength of 500 nm (5. 10-7 m) is incident upon a double slit with a separation of 0.28 mm (2.80 10-4 m). A screen is located 2.7 m from the double slit. At what distance from the center of the screen will the first bright fringe beyond the center fringe appear...
Friday, April 5, 2013 at 5:45pm

World Geography
REVIEW 1.The forests of the Pacific Northwest are just one of the many different ______________ in the United States where many people work in the same industry. A. elevation regions B. political regions C. climate regions<<<<< D. economic regions 2.The ...
Friday, April 5, 2013 at 4:02pm

World Geography
REVIEW 1.Canada currently ranks first in the world in which category? A. Total number of Internet users B. Percentage of college and university graduates<<<<<<<<; C. Literacy rate of adult population D. Average unemployment among citizens 2.The ...
Friday, April 5, 2013 at 3:51pm

History
Who was the first president
Friday, April 5, 2013 at 3:50pm

World Geography
REVIEW 1.Which of the following statements about the natural resources of the United States is most accurate? A. The many agricultural resources of the United States have made up for its lack of other resources.<<<<<<<<< B. U.S. industry and ...
Friday, April 5, 2013 at 3:49pm

AP CHEM
Aspirin has the structural formula below. Which functional groups does this molecule contain? I. Acid II. Alcohol III. Ester IV. Ether I have no way of posting the structure, but it is on google images! If you type in aspirin structural formula, it's the first one. Answer ...
Friday, April 5, 2013 at 2:58pm

Calculus 3
Let G be the region in the first octant that is inside both the cylinders x^2+y^2=1 and y^2+z^2=1. Use a triple integral to evaluate the volume of G.
Friday, April 5, 2013 at 11:02am

math
The three terms x+12, 3x+5 and 2x+25 are the first three terms of an arithmetic progression. What is the value of x?
Friday, April 5, 2013 at 7:47am

Discrete Math
Let n be positive integer greater than 1. We call n prime if the only positive integers that (exactly) divide n are 1 and n itself. For example, the first seven primes are 2, 3, 5, 7, 11, 13 and 17. (We should learn more about primes in Chapter 4.) Use the method of exhaustion...
Friday, April 5, 2013 at 7:41am

Math
Henry is a quality control inspector. He is watching the production line for Barb's Raisin Cookie. Henry will reject a cookie with less than 8 raisins. In the past, one out of every 100 cookies had less than 8 raisins. Find the probability that the first cookie Henry ...
Friday, April 5, 2013 at 12:19am

physics
Three different forces produce the same displacement: the vector Delta(r) starts at the left edge of your computer monitor and the tip points to the right edge of your monitor in a horizontal orientation. The first force has a magnitude of 10 N and it is pointing straight up, ...
Thursday, April 4, 2013 at 10:54pm

algebra
In most state and local courts, 12 jurors and 2 alternates are chosen from a pool of 30 prospective jurors.The order of the alternates is specified. If a juror is unable to serve, then the first alternate will replace the juror.The second alternate will be called on if another...
Thursday, April 4, 2013 at 9:53pm

english/writing
how can i write this sentence in a different way The Scarlet Letter was one of the first mass-produced books in the United States upon its release in 1850, and it received much praise and criticism for the novels supposed morbidity.
Thursday, April 4, 2013 at 3:55pm

Economics
Normally, higher interest rates in a country cause the ___ for that country's currency to increase as money flows to the higher interest rates. This depends on the perceived ___. For the first blank I have "demand", but I'm not sure about the second blank?
Thursday, April 4, 2013 at 3:44pm

Algebra
Which of the following methods can be used to construct a pattern of 10 numbers for which it would be mathematically impossible to predict the 11th term? (more then one answer.) A.Make a pattern, starting with 3, where each number is the next digit of pi (3.14159 . . .). B....
Thursday, April 4, 2013 at 2:54pm

Algebra 2
Which of the following methods can be used to construct a pattern of 10 numbers for which it would be mathematically impossible to predict the 11th term? (more then one answer.) A.Make a pattern, starting with 3, where each number is the next digit of pi (3.14159 . . .). B....
Thursday, April 4, 2013 at 2:39pm

math
Roger has three employees who earn $500, $550, and $700, respectively. how much does Roger owe for SUTA and FUTA in the first weeks? Assume a SUTA rate of $5.3% and a FUTA rate(after the company's credit for state unemployment tax) of .8%
Thursday, April 4, 2013 at 2:12pm

maths
a trust fund has rs30000 that must be invested in two diferent types of bonds.the first bond pays 5% and second 7% interest per year. using matrix multiplication determine how to divide rs 30000 among two types of bonds if the trust must obtain na annual total interest of (a)...
Thursday, April 4, 2013 at 10:49am

Physics
a 2.0 kg block moving at 8 m/s on a frictionless surface collides elastically with a block at rest. The first block moves in the same direction at 2 m/s. What is the second block's mass?
Wednesday, April 3, 2013 at 10:10pm

Last proof read
Sorry for bugging you guys.. But can someone proof read this paragraph. Ohio Sen. Rob Portman is the first Republican senator to endorse same-sex marriage. Portman changed his views on same-sex marriage once he learned his son is gay. " I want all my children, including ...
Wednesday, April 3, 2013 at 7:24pm

math
the perimeter of a triangle is 79.75 inches. the second side of the triangle is half as big as the first side. the third side is 7.25 in greater than the first side what is the length of the longest side of the triangle?
Wednesday, April 3, 2013 at 6:51pm

Algebra
I have a few problems I need some help with. The first is Evaluate the sum. 1. There is an E like symbol on the top is 10 on the bottom n=1 and to the right (7-2n) 2. The next question is find a10 for an arithmetic sequence with a1=6 and d=10 3. Find the number of terms in the...
Wednesday, April 3, 2013 at 3:20pm

Math
A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54; at the third, he quadrupled his money and spent $72, and then had $48 left. How much money had he at the start?
Wednesday, April 3, 2013 at 11:50am

Math
If a salesman sold 2 cars in his first month, 8 cars in his second month, and 32 cars in his third month, using the same sequence how many cars would he sell in month 4, month 5, and month 6
Wednesday, April 3, 2013 at 12:59am

Physics 2
Light with λ = 530 nm passes through a single slit and then illuminates a screen 9.0 m away. If the distance on the screen from the first dark fringe to the center of the interference pattern is 3.20 mm, what is the width of the slit?
Tuesday, April 2, 2013 at 11:27pm

math 141
Three machines turn out all the products in a factory, with the first machine producing 40% of the products, the second machine 35%, and the third machine 25%. The first machine produces defective products 12% of the time, the second machine 3% of the time and the third ...
Tuesday, April 2, 2013 at 11:20pm

math
Subjects were asked to taste two wine samples in sequence. Both samples given were the same wine although subjects were expecting to taste two different samples. Of the 32 subjects in the study, 22 selected the wine presented first when presented with two identical samples. A...
Tuesday, April 2, 2013 at 10:47pm

math
T and S share a digital music player that randomly selects songs to play. Together T and S have loaded 3476 songs. T and S want to know if each have loaded a different proportion of songs. When in random-selection mode, 22 of first 30 songs selected were loaded by S. Let p ...
Tuesday, April 2, 2013 at 9:33pm

Public Speaking
1. When your speech adds to your listeners’ knowledge, it is meant to: A. inform. B. persuade. C. entertain. D. celebrate. is it A 2. In choosing a topic for your first speech, it is wise to: A. ask advice from others. B. start with what you know. C. research first. D. ...
Tuesday, April 2, 2013 at 8:02pm

Math
Paula invested into two accounts; one pays 5% simple interest and the other 6% simple interest. She invested $3000 more in the account paying 6% than in the other account 5%. At the the end of the first year, Paula total return was 730. How much did she invest in each account?
Tuesday, April 2, 2013 at 7:48pm

Math
16.Four students are in line to perform in the talent show. Sally is ahead of Kevin. Marcus is behind Kevin. Sally is behind Jenny. Who is first in line Jenny
Tuesday, April 2, 2013 at 6:59pm

MATH!!
Andy, Barbara and Chrisy play a game. Their probabilities of winning are 1/2, 1/3, and 1/6 respectively. What is the probability that each wins exatly one of the first three games played? Express your answer as a common fraction.
Tuesday, April 2, 2013 at 6:42pm

Statistics
Two cards are drawn from an ordinary deck of cards, and the first is not replaced before the second is drawn. What is the probability that one card is an ace and the other is a king
Tuesday, April 2, 2013 at 5:12pm

8th Math - Probability
A basket contains 5 green lollipops, 12 red lollipops, and 7 orange lollipops. When a lollipop is taken from the basket, it is not replaced. What is P(orange, then orange)? I know the answer. It's 42/552. But HOW do I figure this out? I can do the first p(orange) but if it...
Tuesday, April 2, 2013 at 4:50pm

English
Can someone check these sentences I need to prepare for tomorrow? Thank you. 1) Troy has been at the BRIT School since he was 14. Before that he was in a normal secondary school. 2) Unlike in a normal secondary school, students at the BRIT study all the ordinary academic ...
Tuesday, April 2, 2013 at 4:39pm

7th Grade Social Studies
1. Which of the following are accomplishments of the Incas? (1 point) pyramids floating gardens hieroglyphics roads and aqueducts 2. All of the following contributed to the Spanish victory over the Aztecs except (1 point) disease wiped out many of the Aztecs. native Americans ...
Tuesday, April 2, 2013 at 1:28pm

7th Grade Language Arts~!!!
What was the first South American nation to receive independence? (1 point) Chile Argentina Paraguay Brazil My Answer: 1) Argentina Is this correct?
Tuesday, April 2, 2013 at 12:28pm

chemistry
The first ionization energy of a carbon atom is 1.81 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing carbon atoms? v=______s^(-1) lambda =_____nm Assuming an ionization efficiency of 47.0%, how many such photons are needed to ionize...
Tuesday, April 2, 2013 at 7:02am

MAths algebra
Consecutive bases of a square shaped baseball diamond are 90 feet apart .Find to the nearest tength of a foot the distance from first base diagonally across the diamond to third base
Tuesday, April 2, 2013 at 3:04am

7th Grade Language Arts URRGEENT!!!!
What was the first South American nation to receive independence? (1 point) Chile Argentina Paraguay Brazil ok this question IDK... however I think it's Chile OR Argentina though to be honest idk I've read the book 17 times (i counted) I looked it up in google (it didn...
Tuesday, April 2, 2013 at 2:08am

Spanish 2
Conjugate Past Tense Resulta que todo el mundo _____ que mi novio me estaba enganando porque el ____ con otra chica y los dos estaban bailando juntos y besandose toda la noche. Choices: decir, tener, querer, poner, saber, poder, and venir I tried different choices, but I feel ...
Tuesday, April 2, 2013 at 1:16am

Math
Jeremy and Cynthia leave at the same time to travel 75 miles to an area. Jeremy drives 15 miles in 12 minutes. Cynthia drives 26 minutes in 20 minutes. If they continue at the same rates, who will arrive at the area first?
Tuesday, April 2, 2013 at 12:10am

Chemistry
I am so overwhelmed. can somebody please help me? Consider a solution that is 0.022 M in Fe^2+ and 0.014 in Mg^2+ A) if K2CO3 is to selectively precipitate one of the cations while leaving the other cation in solution, which cation will precipitate first? B) What minimum ...
Monday, April 1, 2013 at 9:45pm

Algebra
I have several of these problems and am having trouble getting the hang of it. Can you help me? Factor. If the result is the square of a binomial, write it as such. If the result is prime, so state. Here are the first couple of problems. 1) x^2 + 7x + 12 2) x^2 - x - 12 3) x^2...
Monday, April 1, 2013 at 8:22pm

English
10.After the conductor (auditioned supplemented) all the candidates for the position of first violinist he made his final choice auditioned 11.Everything that I have learned about Abraham Lincoln from history books (stupefies affirms) my reverence for this great president ...
Monday, April 1, 2013 at 6:53pm

algebra
Consider making a four-digit I.D. number using the digits 3,5,8, and 0 a. How many I.D. numbers can be formed using each digit once? b. How many can be formed using each digit once and not using 0 first? c. How many can be formed if repetition is allowed and any digit can be ...
Monday, April 1, 2013 at 6:44pm

Physics
A stone is thrown from the edge of a cliff into the ocean below. It is thrown somewhat upward, but mostly outward. The stone has a mass of 2.0kg and is thrown with a speed of 10m/s from an initial height of 5.0m above the ocean. A. What is the kinetic energy of the stone when ...
Monday, April 1, 2013 at 6:41pm

Algebra help
I need some help I posted the first question to this a bit ago but didnt enter it correctly so sorry to those who helped! I also have a 2nd half which I understood till they added the dividing part. I need to find the first five terms of each recursive sequence. 1.C1=64, C2=32...
Monday, April 1, 2013 at 12:07pm

Physics
Question 2. 3 Consider a box that explodes into two pieces while moving with Fig. 9-24 a constant positive velocity along an x axis. If one piece, with mass : m1, ends up with positive velocity v1, then the second piece, with : mass m2, could end up with (a) a positive ...
Monday, April 1, 2013 at 10:29am

Math
Please help! 1. A taxi cost $2.25 for the first mile plus .15 for each additional tenth of a mile. For a 5.2 mile trip Eric paid $10 and told the driver to keep the change. How much was the drivers tip? 2. 2 trillion is how much more than seven hundred fifty billion. Write the...
Monday, April 1, 2013 at 10:15am

algebra 1 part 2
What are the minimum, first quartile, median, third quartile, and maximum of the data set? As cars passed a checkpoint, the following speeds were clocked and recorded. Speed (mph): 55 62 61 54 68 72 59 61 70
Monday, April 1, 2013 at 9:25am

Math
A theater group made appearances in two cities. The hotel charge before tax in the second city was $1000 higher than in the first. The tax in the first city was 4% , and the tax in the second city was 7% . The total hotel tax paid for the two cities was $455 . How much was the...
Monday, April 1, 2013 at 8:33am

calculus
4x√(2x^2 + 2x - 1). find first derivative
Sunday, March 31, 2013 at 9:59pm

calculus
find the first derivative: 4xsqrt2x^2+2x-1.
Sunday, March 31, 2013 at 9:08pm

Algebra Recursive sequence help
I need some help as I'm totally lost! I need to find the first five terms of each recursive sequence. The n-1 on the problem shows it below the a. 1. A1=3 An=2a n-1- 3 2. C1=64, C2=32 Cn= Cn-2 - Cn-1/2
Sunday, March 31, 2013 at 7:56pm

Physics 11
Two people start running from rest. The first person has a mass of 59 kg and is wearing dress shoes with a coefficient of static friction of 0.52. The other person is wearing running shoes with a coefficient of static friction of 0.66. Explain why we do not really need the ...
Sunday, March 31, 2013 at 6:02pm

maths
Ted and Suzanne load 3476 songs into a player that randomly selects which song to play. When in random-selection mode, 22 of the first 30 songs were loaded by Suzanne. T and S want to determine if each have loaded a different proportion of songs. Let p denote proportion of ...
Sunday, March 31, 2013 at 4:04pm

math
james brought a few hamsters. for each day after the first day of the week, the hamsters at 20 grams of food than the previous day. the hamsters grew fast, finishing 1260 grams of food in the first week. how much food did the hamsters eat on the first day?
Sunday, March 31, 2013 at 1:59pm

math
Melissa earned a score of 75% on her first test. She wants to earn an 85% on her second test. What is the percent increase, rounded to the nearest whole number, from 75% to 85%?
Sunday, March 31, 2013 at 12:56am

math
Gary has 10 coins in his pocket. 2 quarters 5 dimes 3 nickels without looking, Gary pulls 1 coin from his pocket and puts it on a table. Then, he pulls one more coin from his pocket. What is the probability that the first coin is a dime and the second coin is a nickle?
Sunday, March 31, 2013 at 12:31am

math
Cece scored a 78 on her first math test. She scored an 84 on her second test. What is the percent increase, rounded to the nearest tenth, from Cece's first score to her second score?
Sunday, March 31, 2013 at 12:00am

algebra
A 120-foot-long rope is cut into 3 pieces. The first piece of rope is twice as long as the second piece of rope. The third piece of rope is three times as long as the second piece of rope. What is the length of the longest piece of rope?
Saturday, March 30, 2013 at 11:25pm

math
there were 7 times as many marbles in box a as in box b. after joyce transferred 294 marbles from box a to box b, both boxes had the same number of marbles. how many marbles were there in box a at first?
Saturday, March 30, 2013 at 10:07pm

math
theta is a first quadrant angle in standard position and cos theta = 1/(sqrt10) . Find the exact value of sin theta,
Saturday, March 30, 2013 at 9:50pm

CHEMISTRY HELP PLEASE!!!
The cell potential of the following electrochemical cell depends on the pH of the solution in the anode half-cell: Pt(s)|H2(g,1atm)|H+(aq,?M)||Cu^2+(aq,1.0M)|Cu(s) what is the pH of the solution if Ecell is 375 mV? I first got .65 as my pH, but it said that it was wrong...
Saturday, March 30, 2013 at 9:33pm

psychology
I am trying to find a good topic question and hypothesis for addiction. In my class we were asked to pick any topic related to psychology and find research to back it up. Addiction is a wide range of different behaviors and I can't seem to find a concrete answer. My first ...
Saturday, March 30, 2013 at 4:17pm

physics
What is the average speed of the car during the first 105?
Saturday, March 30, 2013 at 10:11am

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