# Posts by audrey

Total # Posts: 373

**Math**

Solve this pair of equations by the elimination method: 4x-3y=-4 3x=2y-4

**math**

If I work for 4/7 of a week, how many days off do I get in total over three weeks?

**math**

75% off is 25% = 1/4 full price = 200*4 * 1.08 deal price = (200*3 + 50) * 1.08 subtract

**Chemistry**

When a 6.50g sample of solid sodium hydroxide dissolves in 100.0g of water in a coffee cup calorimeter, the temperature rises from 21.6C to 37.8C. A.) Calculate the quantity of heat (in kJ) released in the reaction. (I know the answer, but can you show the steps) Thanks

**Chemistry**

Calculate the molarity of the H2SO4 solution if 17.45 mL of NaOH was necessary to reach the endpoint of titration. The molarity of the NaOH solution was 0.425 M and 26.30 mL of H2SO4 was added to the Erlenmeyer flask. H2SO4(aq) + 2 NaOH (aq) -----> Na2SO4 (aq) + 2 H2O (l) I...

**Statistics **

The probability that a randomly selected two-year-old male stinkbug will live to be three years old is .59963 what is the probability that to randomly selected two-year-old male stinkbugs will live to be three years old? What is the probability that for randomly selected two-...

**civic**

what are the limitatins to human rights

**maths**

cornel`s walking pace measures 60cm .How many metres has he walked after taking 50 paces?

**math**

Warner Cable Company needs to replace 5 vehicles. It considering 2 different types: Type HC with a higher cost and higher gas mileage and Type LC with a lower cost and lower gas mileage. Vehicle HC is $35000 and Vehicle LC is $28000. HC averages 43 miles per gallon of gas and ...

**science**

most of the life of a cell is spent in a period of growth and development called_____.

**Chemistry**

An analytical chemist weighs out 0.225g of an unknown diprotic acid into a 250mL volumetric flask and dilutes to the mark with distilled water. He then titrates this solution with 0.0700M NaOHsolution. When the titration reaches the equivalence point, the chemist finds he has ...

**Calculus**

Find the equation of the tangent line to the curve 2x^2y-3y^2=-11 at the point (2,-1).

**Calculus**

A particle moves according to the equation of motion s(t)=t^2-2t+3 where s(t) is measured in feet and t is measured in seconds. Find the total distance traveled in the 3 seconds.

**Calculus**

I tried that but that was wrong too. Q= 0.2 m^3/min A=surface area= length(width) at 10 cm deep depth is 1/2 the height. Width= 30 + 1/2(70-30)= 50 cm or .5 m dh/dt= QA A= 5(.5)= 2.5 m^3 dh/dt= (.2)(2.5)= .05 m/min

**Calculus**

After seeing other examples on here, I tried to do it myself. I got .05 m/min but the online system I do my homework on, said it was wrong.

**Calculus**

A water trough is 5 m long and has a cross-section in the shape of an isosceles trapezoid that is 30 cm wide at the bottom, 70 cm wide at the top, and has height 40 cm. If the trough is being filled with water at the rate of 0.2 m3/min how fast is the water level rising when ...

**Social Studies**

Ok...Well I just asking to help YOU..but whatevs

**Social Studies**

For which question?

**Social Studies**

3 is A.

**Social Studies**

Whats the right answer for 1? Wouldn't it be A??

**Math**

PLEASE!! I HAVE ONLY TONIGHT TO DO THIS! I AM GOING ON VACATION TOMORROW! EARLY! PLEASE!!

**Math**

What are the answers to everything

**Math**

Who has done this? I need straight answers, please. Anyone? PLEASE! I'll get an F if I don't do good. HELP!

**Math**

Answers, please?

**Math**

1. A 2. A 3. A 4. D 5. B 6. C 7. B 8. C 9. HELP! Send me correct calculations to get the correct answer, please. 10. HELP! Send me correct calculations to get the correct answer, please.

**Math**

1. What is a reasonable distance between two cities? • 200 km <<< • 200 m • 200 cm • 200 mm 2. Which value correctly completes the statement? 6,501.5 km= _____m • 6,501,500 • 65,015 • 650,150,000 • 650.15 3. Find the perimeter ...

**Chemistry**

Describe the procedure you would follow to determine the concentration of Vitamin C in a sample if the volume of DCPIP required to reach the endpoint was more than the 25-mL flask could hold. Note the titration must still be carried out in the flask. Be sure to include any ...

**Chemistry**

Describe the procedure you would follow to determine the concentration of Vitamin C in a sample if the volume of DCPIP required to reach the endpoint was more than the 25-mL flask could hold. Note the titration must still be carried out in the flask. Be sure to include any ...

**Life orentatlon**

Stealing

**Art**

But what's the rest of the answers, for the rest of the Quiz? Please tell me! I'll be a waiting!! :)

**Art**

Yes, it's B

**GC**

A circular fountain has a diameter of 12 feet. A 2-foot wide path surrounds the fountain. What is the total area of the fountain and the path around it?

**Art**

What's the rest of the answers, for the rest of the Quiz?

**Health**

Thanks for the answers!

**Social studies**

Hey, could anyone post answers to the whole Test? I have a D in Social Studies, and if I get an A+ in this Test I will most likely have a C+ or B-.. Please post it!

**math**

Darleen gets $10 a week allowance. She walks her neighbor's dog 6 days each week and earns $3 each day. She earns $7 an hour doing odd jobs. Darleen wants to save $15 a week, give $5 a week to charity, and have at least $20 each week to spend. How many hours of odd jobs ...

**Chemistry**

When aluminum is reached in a closed container with 8.36 g of O2, how many grams of Aluminum oxide can form

**Language Arts**

Great! What's the answers for the next 4 questions??

**Language Arts**

B That's what I think

**Language Arts**

What do you mean??

**Language Arts**

I mean what is the answer?? Along with the other questions and answers.

**Language Arts**

thanks now i know. now what??

**Language Arts**

1. When you paraphrase a line of poetry, what do you do? A.You turn it into a question. B.You put it in your own words. C.You add humor to it. D.You copy it down exactly HELP!!

**Social Studies**

1. Which BEST describes the differences that divide Maayan and Muhammad? A. age and interests B. physical barriers C. culture and politics** D. economic status 2. How does Maayan most directly experience the conflict in Israel? A. through treating victims of terrorist attacks...

**Math**

No wait, B

**Math**

How many perpendicular bisectors can be constructed for a line segment? A. 0 B. 1 C. 2 D. infinitely many I think D!

**global studies**

I am doing the same thing!And plz just give us the answers! Don's you work for connections academy??? They'd tell you to give the answers Reed!!!!

**langauge arts**

It should be: D C

**langauge arts**

It should be: D B

**Social Studies, 6th Grade.**

HELP!! I don't know this question: where would you most likely find south america's largest cities? Help! Someone tell me what the answer is!!! HELP!!!! Please help me. Someone answer my question.

**Math**

Help me! T~T How do you subtract with algebra?

**math**

What is the best order-of-magnitude estimate for 0.000002?

**washington**

Victoria buys two pairs of sunglasses for $8 each.About how mucho did she pay for Both pairs of glasses?Foundation to the nearest ten.Solbes the problem using the gourmet Stephen plan

**Physics**

Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.65 μC charge. (Let A = 1.65 μC, B = 6.60 μC, and C = −4.20 μC.)

**social studies**

So what's the answers?

**art**

All the answers, I took the test, believe me, please I got 100%: 1. B 2. C 3. D 4. A 5. D 6. B 7. D 8. B 9. A 10. B Your Welcome!

**life orientation**

What are the two issues in sport

**Science**

C A B D A C (CORRECT ANSWERS)

**Science**

cflec is 100% correct! I got 100%

**Optimization**

A hunter is at a point on a river bank. he wants to get his cabin, located 19 miles north and 8 miles west. He can travel 5 mph on the river bank and 2 mph on the rough rocky ground.how far upriver should he go in order to reach the cabin in the minimum amount of the time.

**Math**

Find x-value of all points where function has relative extrema and find the Values of these extrema. f(x)= (x^2)/(ln(x))

**math**

given that theta=tan^-1(4/3) find sin theta

**Math**

A piece of pipe is 30&3/4 inches long. If five pieces, each 4&1/2 inches long, are cut from the pipe, how many inches of pipe remain? A)9&3/4 in. B)9&1/12 in. C)26&5/12 in. D)26&3/4 in.

**MATHS**

3/8

**American Government**

Originalists often hold that it is incorrect to use the equal protection ckause of the foyrteen anendment to strike down laws that discriminate because

**Statistics**

Dr. Hernandez plans to measure FEV in a random sample of n young women from a certain popu- lation, and to use the sample mean y ̄ as an estimate of the population mean. Let A be the event that Hernandez’s sample mean will be within ±100 ml of the popula- tion...

**social studies**

what's the answer?

**social studies**

These are the right answers, I took the quiz: 1. A 2. C 3. A 4. A 5. C 6. B 7. B 8. B 9. B 10. D

**please check(Social studies)**

Yeah, that's a little rude.

**Social studies check answers ***damon*****

Oh, its A. Mountains

**Social studies check answers ***damon*****

What is the correct answer?? I NEED TO KNOW OR I'LL GET AN F!

**Social studies check answers ***damon*****

So, what is Number 1's answer??? I NEED TO KNOW!!

**Math**

6 1-pound bags

**Social study**

They group up

**Math**

188.4

**Statistics**

The distribution of cholesterol levels of the residents of a state closely follows the normal curve. Investigators want to test whether the mean cholesterol level of the residents is 200 mg/dL or lower. A simple random sample of 12 residents has a mean cholesterol level of 185...

**Statistics**

A statistical test is performed, and its P-value turns out to be about 3%. Which of the following must be true? Pick all that are correct. The null hypothesis is true. There is about a 3% chance that the null hypothesis is true. The alternative hypothesis is true. There is ...

**log[1/6](x^2+x)-log[1/6](x^2-x)=-2**

Solve the equation log[1/6](x^2+x)-log[1/6](x^2-x)=-2

**Solve the inequality**

Solve the inequality. Write the solution in interval notation. (x+14)/(x-8)≥ 1

**math**

what is 8/16 of 16 counters

**MATH.**

Oh wait so that ; means its not part of the problem so its asking what the X and M is? Now i think i get it lol

**MATH.**

Wait so the first one is -1? Im so confused right now

**MATH.**

7=2-5m; m= X+ 0.054= -1.802; x= If u can help me out or answer these for me u arr awesome and thank you.

**College Algebra**

The load L a horizontal beam can safely support varies jointly as the width w and the square of the depth d and inversely as the length l. If a 12-foot beam with width 6 inches and depth 8 inches safely supports 600 pounds, how many pounds can a 14-foot beam that has width 5.5...

**math**

what are two equivalent fractions for 10/13??

**art**

well, both are stacked and sculptures. it looks as if a touch can make the whole thing collapse. The Stonehenge is made out of sandstone and bluestone while David Smith's sculptures is made out of steel and maybe bronze too.

**physics**

54

**Science**

Give the value of the 1st ionization energy of beryllium (Be). Express your answer in Joules (J/atom).

**Physics**

A rubber ball (mass 0.30 kg) is dropped from a height of 2.0 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.9 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? MAGNITUDE: 3.05 kg m/s V1 (velocity ...

**Chemistry**

A 15.0 mL sample of 0.250 M H2SO4 is neutralized by 20.5 mL of KOH solution. What is the molarity of the KOH solution?

**please help with economics!**

Hi, please help me with this econs question! thanks! I'm asked to sketch the average and marginal cost curves of a software company, in which when it first starts up, the costs are extremely high. (High start up costs, millions of dollar spent to make the software)But ...

**Economics**

Hi, please help me with this econs question! thanks! I'm asked to sketch the average and marginal cost curves of a software company, in which when it first starts up, the costs are extremely high. (High start up costs, millions of dollar spent to make the software)But ...

**HISTORY**

why did the clergy support Martin Luther's ideas?

**HISTORY**

what 3 major beliefs were at the hear of Martin Luther's teachings?

**math**

add the last numbers in each number such as your example, 3+5+4+7 and if that's odd then the total is odd same for even

**history**

where did martin luther start his revolution?

**math**

19%

**nursing**

What would a women with type 1 diabetes test glucose score be is she did not fast 2 hours prior?

**Healthcare**

As the administrator of a local nursing home, you have just received notification that the organization is being purchased by a national group. Because of new policies to be implemented, many of the residents will be displaced. To make the situation more challenging, some of ...