Posts by molly
Total # Posts: 653

math
Carbon 14 (14C) dating assumes that the carbon dioxide on Earth today has the same radioactive content as it did centuries ago. If this is true, the amount of 14C absorbed by a tree that grew several centuries ago should be the same as the amount of 14C absorbed by a tree ... 
Math/Statistics/Probability
Leroy and Fred play chess at a club every Wednesday. The probability that Leroy will lose is .3, that he will stalemate is .5, and that he will win is .2. The probability that Fred will lose is .25, that he will stalemate is .4, and that he will win is .35. What is the ... 
Chemistry
Never mind I figured out it was D 
Chemistry
Which of the following equations is balanced correctly? A. 2 C3H3 + O2 ? 2 CO2 + H2O B. Cl2 + 2 KBr ? KCl + Br2 C. 3 H2O ? H2 + 3 O2 D. 2 C2H2 + 5 O2 ? 4 CO2 + 2 H2O Can anyone help me figure out which is balanced correctly? 
Chemistry
If you wanted to dope Selenium with something to make it a ptype semiconductor, what would you use? 
US History
I tried :/ 
US History
How did the spoils system affect president James Garfield and his successor Chester A. Arthur?? 
english essay
essay on taking risks with examples containing Edward Jenner and Mother Teresa (need a thesis, intro, and conclusion, already got body paragraphs) 
science
I think it is A as well 
Science
if I came here for answers I wouldn’t have put my name. I figured that someone would’ve liked to explain it to me and actually discuss what’s going on. If I wanted the answers I would’ve on the link on the website that gives them to me. 
Science
I don’t know if my last answer posted but what I was trying to say is I don’t exactly get it I’ve read a lot of the articles but I don’t understand them 
Science
Lol sorry guys I meant to write *Write* not right 
Science
Earthquakes and Seismic Waves •If the statement is true right true if the statement is false change the underlined word or words(I’ll put them in parentheses) to make this statement true.• 1.______The shaking and trembling that results for movement of (rock) ... 
Science
A student uses a eudiometer tube to collect oxygen gas over water where the temperature is 22 ºC. What is the pressure of the oxygen gas (mm Hg) if the air pressure in the lab is 735 mm Hg? 
Statistics
H(o): u=10 H(o): u>10 (sigma)=2 n=25 In your research, you will fail to reject the null hypothesis if your sample average is less than 10.82 a) What is the probability of making a Type II Error if the true value of "u" is 10.26? b) What is the power of this test? ... 
Chemistry
I need help filling in the blanks! Still cant get the ideal gas equation down.. (P) (V) (n) (T) 2.00 atm 1.00L 0.500mol ? K 
random
yes 
random
I asked it around 3:04 (listed as 5:04 on here) 
random
why cant I find a question that I posted earlier? I find it but when I click on it it takes me back to the list of questions asked today, but mine is not there! WHY? 
Calculus
I found part B, but stuck on part A. Use implicit differentiation to find the points where the parabola defined by x^22xy+y^2+4x8y+24= 0 has horizontal and vertical tangent lines. A) The parabola has horizontal tangent lines at the point(s): B)The parabola has vertical ... 
HELP
I think that the beaks are different because it's for eating different types of food 
Religion (Christian)
Well, I knew he was the accuser, but I'm confused about how the accusations of the devil and God's convictions of sin can compare. God knows the wrong you've done, but the devil just accuses you of doing something when you might not have done it 
Religion (Christian)
How is the devil described in Revelation 12:10? How does the devil's accusations compare to God's conviction of sin? I'm more stuck on the second question 
Chemistry (Easy)
So say if we're doing an electronic configuration for the element "Lead", We would do [Xe] 6s^2 and 4F^14, but we still need to add in the "d" block. Would it be 5d^9 or 5d^10? 
English
What? What's the prompt? 
Health and PE
10. A daily value of 10% means that A. 10% of your calories should come from a particular nutrient B. A food consists of 10 of a particular nutrient C. A food package can bear the nutrient claim "light D. One serving provides 10% of the daily amount for a particular ... 
geography and history
AThe Scholars in the middle ages wanted to add some structures the Greeks hadn't known about. CThe Great Wall of China CThe Great Pyramid of Giza AThey were both made to honor Greek gods. 100% 
history
what is the compromise in the attack on pearl harbor p.s no wikipedia has the answer 
Social Studies
1. Why did Xerxes want to conquer Greece? a. to increase his country's wealth b. to win glory c. for revenge d. all of these** 2. Xerxes was king of a. Athens b. Persia** c. Delos d. Crete 3. The Greeks won the Battle of Salamis because their ships a. could move around ... 
Lang Arts
C C A A 
language arts
1. (TRUE) Unit Tests have two parts: a closed book test and an open book test. 2. (TRUE) You will be assessed on your independent reading selection on quizzes and tests. 3. (D) After which type of assessment will you be asked to set goals for yourself? DPretest (ANSWER IS D) ... 
Ela
1. (TRUE) Unit Tests have two parts: a closed book test and an open book test. 2. (TRUE) You will be assessed on your independent reading selection on quizzes and tests. 3. (D) After which type of assessment will you be asked to set goals for yourself? DPretest (ANSWER IS D) ... 
Trigonometry
The light on the Prince Shoal lighthouse is 25m above water level. From a position behind the light, the angle of the depression of the sailboat is 12 degrees. How far is the sailboat from the lighthouse, to the nearest metre? (I have no idea how the diagram would look  it ... 
Ed Tech
The answer is C (it allows citizens to submit anonymous tips to the police) What is netiquette? B. being polite and using good manners when in the cyber community. How are texting and instant messaging alike? A. They are forms of instant digital communication. How can ... 
Pre Algebra
A baker can prepare 2 1/2 dozen cupcakes in 1/4 hour. what is the unit rate? 
chemistry
*The density of methanol is 0.79 g/mL 
chemistry
Hello, I was confused on this chemistry problem and I was wondering if someone could please help me. 1) Consider the following chemical reaction: 2CH3OH(I) + 3O2 (g) ? 2CO2(g) + 4H2O(I) Calculate the number of moles of CO2 produced when 11.25 mL of methanol CH3OH(I) reacted ... 
language arts connection academy
1. (TRUE) Unit Tests have two parts: a closed book test and an open book test. 2. (TRUE) You will be assessed on your independent reading selection on quizzes and tests. 3. (D) After which type of assessment will you be asked to set goals for yourself? DPretest (ANSWER IS D) ... 
Social studies
Can anyone help me with the essay? "How did the spoils system affect president James Garfield and his successor Chester A. Arthur?" 
Social studies
Can anyone help me with the essay? "How did the spoils system affect president James Garfield and his successor Chester A. Arthur?" 
English
1. Dafter reading the question, try to think of the answer before you look at the choices. 2. BIf you don't know the exact answer, write down whatever you do know. 3. CAll parts of a statement must be true for it to be true. 4. AThink about what you want to say and ... 
physics
rfiouh rig that is not right 
English
1. (TRUE) Unit Tests have two parts: a closed book test and an open book test. 2. (TRUE) You will be assessed on your independent reading selection on quizzes and tests. 3. (D) After which type of assessment will you be asked to set goals for yourself? DPretest (ANSWER IS D) ... 
Health
1. Dvegetables & grains 2. ADairy 3. AApple Juicefruit 4. BGrilled burgers are better 5. ABaked sweet potato with cinnamon 
american government
How does supporting the human rights defenders align with the philosophies of America’s Founding Fathers 
Math
Thanks (: I knew it had t/20 in the solution somehow. I see what I did wrong now. 
Math
I keep getting an negative answer. I know the answer is 4.5 only because the teacher tells us what it I just cannot figure out how to set it up. I got e^t/20 +1/20Ae^t/20 = 5e^t/20, which is way wrong 
Math
A 100 gallon tank is filled with a salt solution containing 10 lbs of salt. Pure water is pumped in at a rate of 5 gallons per minute and pumped out at the same rate. How many minutes will it take the amount of salt to drop to 8 lbs? Round to one decimal place. 
medical coding
ICD diagnosis code for traumatic left second fracture of metatarsal 
Calc
Find the Value(s) of C guaranteed by the Mean Value Theorem for Integrals for f(x) =x^3 in the interval [0,3] 
Calc
Describe the xvalues at which f is differentiable. f(x)= x^2/5 
Calculus
Why are these false? If a function has derivatives from both the right and left at a point then its differentiable at that point. 
Physics
you pull your 6kg dog on a sled which has a mass of 15kg. while you are pulling at 33N, there is a 12N frictional force that is encountered. what is the acceleration of your sled and dog? 
history
Anonomious is right!!! 100%!! 
Algebra
Suppose U={...3,2,1,0,1,2,3...} is the universal set and R={...3,1,1,3...}. What is R? A. {2,0,2} B. {...4,2,0,2,4...} C. {...4,2,2,4...} D. {4,2,2,4} I think it is C. Thank you! 
Finite
Assume that the test has 5 true/false questions, and 10 multiple choice questions (4 options per questions), each with exactly one correct answer. If a student guesses randomly on each question, what is his expected score? .5*5+10*.25 5/15? 
math
Small marbles weigh 3.6 grams each and large marbles weigh 4.6 grams each. A bag contains 40 marbles and weighs 156 grams. How many marbles of each size are in the bag ? 
Math
Two cars are 400 miles apart and start towards one another, one car traveling 4 miles per hour slower than the other. After 3 hours, the cars are 40 miles apart. Find the speed of each car 
Chemistry
I have a question about solubility rules and net ionic equations so for example : CuSO4+Ba(NO3)2>BaSO4+Cu(NO3)2 Okay so I know BaSO4 is insoluble while Cu(NO3)is solulable, that means BaSO4 will have a precipitate while Cu(NO3) doesn't. So does that mean the ... 
Chemistry
thank you so much that makes so much sense :) 
Chemistry
can you please please help me with these questions I don't know how to do any of them. I know how to calculate moles and grams and mole ratio,etc but I don't understand the limiting excess reactant and yield stuff. Thanks! 1.In the following chemical reaction, how many... 
Chemistry
can you please please help me with these questions I don't know how to do any of them. I know how to calculate moles and grams and mole ratio,etc but I don't understand the limiting excess reactant and yield stuff. Thanks! 1.In the following chemical reaction, how many... 
MATH
Hi, sorry to bother you. but can you please help me with this problem z=log(e^(5y)) Thanks! 
Social Studies
Well Martha some people could be pretending to be ms.sue . but you are right Katie pickle is really. Big help she had help me and I pass a lots of test quiz and quick due to her support. Thanks Katie pickle you are really a big help 
Physics
A Sunway train starts from rest at a station and accelerates at a rate of 2.0 ms^2 for 10 s. It runs for constant speed for 50 s and slows down at a rate of 3.5 ms^2 until it stops at the next station. Find the total distance covered Draw the velocity vs time graph for the ... 
Social studies
7. A and c 8. C These are a 100% correct 
math
Alex deposits $250 at the end of each month into an account that earns 4% interest compounded monthly. Determine the value of Alex’s account after 10 years. State you answer to the nearest $1 
Calculus
A spherical balloon is inflated at the rate of 5 cubic feet/minute. What is the volume of the balloon if when the radius is increasing at the rate of 3 feet/minute? 
Science
If 10g of magnesium reacted with 5g of oxygen how much magnesium oxide would you produce? How do you know? 
Math
Tracy has one can of iced tea mix. One scoop of the mix makes two servings of iced tea. The scoop holds 1/12 of a can. How many servings of iced tea can Tracy make? 
English
The answer is not B. I have no idea what it is but it's not B 
English
It is B, not c 
English
“It’s about the ball, the bat, and the mitt./ Ball hits bat, or it hits mitt.” This is an example of which sound device? 
Chemistry
how many liters of CO2 and water vapor are produced by burning .3 liters of C2H2 (Acetylene) with .75 liters of O2? The balanced equation is: 2C2H2 + 5O2 = 2 H2O + 4CO2 
Language
euphony:cacophony:: 
Social Studies
What was the answer? 
Math
The two shortest sides of a right triangle are 10 in and 24 in long. What is the legnth if the shortest side of a similar triangle whose two longest sides are 36 in and 39 in? 
Math
If a punch recipe contains 40% of gingerale 25% of Orange Juice 20% of pineapple juice does 15% of sorbet how many cups of sugar are used in 8 cups of punch 
Science
The streams are smaller rivers that feed into a main river are its: B. tributaries Why do plants at the bottom of a pond grow better than plants at the bottom of a lake? A. Sunlight does not reach the deepest parts of a lake, so plants generally do not grow well at the bottom... 
5th grade math
jimmy measured 3 feet 7 inches tall in May. In October,he measured 4 feet 3 inched tall. How much did Jimmy grow from May to October? 
calc
The quantity (in yards) of a certain fabric that is sold by a manufacturer at a price of p dollars per yard is Q = f(p). 1) What is the meaning of the derivative f ' (16)? 2) What are its units? 3) Is f ' (16) positive or negative? Explain. 
calculus
A flea moves along the line y = 3 according to the equation: x = t^3  9t^2 + 24t where x is its x coordinate at time t secs. Determine: 1) the position, velocity, and acceleration of the flea at time 3 secs. Answer: position  3^3  9(3)^2 + 24(3) = 18 units/second velocity... 
Socialsl studies
C A C A B 100% 
Art 1 question PLZ HELP ASAP
Yes B D B D A 100% 
English
The feeling that things weren't as good as they seemed is described best by which image in Borders 
Science
Explain why chlorine (Cl²) is a gas at room temperature, but at sodium chloride (NaCL) is a solid at room temperature. 
Math
OK  I get it now! Thank you so much! 
Math
So, can I ask one more thing? Why do you factor first? Is it so that you have to factor to switch the order of the variables? Why can I not just do this? (other than because I will get the wrong answer!) :) cd/dc d+c/dc Is cd not the same as d+c? The reason I ask is ... 
Math
Thank you! 
Math
cd / dc I know the answer is 1, but what is the math that I have to show to get to that answer? Thanks! 
Ed Tech. PLZ HELP ASAP
Q: How can you identify the values portrayed in a story? A: by focusing on what the characters think, say, do Q: To publish your slide show as a movie what should you click on first? A: File Q: What is the purpose of slide timings? A: to set the time each slide will be shown ... 
Algebra
Mac N is right!! Thanks you! 
Math
If I had three times as many marbles as my friend and toghter we had 48 marbles how many marbles do I have? 48/3=16? 
physics
Two racing boats set out from the same dock and speed away at the same constant speed of 119 km/h for half an hour (0.500 h), the blue boat headed 26.8° south of west, and the green boat headed 41.4° south of west. During this halfhour (a) how much farther west does ... 
Social Studies
????????????????????? 
English please help thanks
pickle rick 
Social Studies
100%** 
Social Studies
Ohhh, thank you so much! I got %100 
Social Studies
So would it be microcredits? Aren't those like loans, meaning they would have to pay them back? 
Social Studies
because they can trade the natural resources