# Lulu

Popular questions and responses by Lulu-
## History

Which option accurately describes Ferdinand Magellan and his motivation for exploring the world? A.)He was a Portuguese explorer who sailed for Spain; he set out to find a better route to the Spice Islands. B.)He was an Italian explorer who sailed for King

*asked on October 5, 2018* -
## physics

a 10-m uniform beam of weight 100N is supported by two ropes at the ends. If a 400N erson sits at 2.0 m from the left end of the beam, what is the tension in the right rope?

*asked on January 21, 2009* -
## Trigonometry

Calculate the area: From a point A, proceed east for 300 m to Point B. Then travel 420 m on a bearing S35°E to point C. Then travel along a bearing of S40°W for 500 m to Point D. Then return to Point A.

*asked on July 21, 2012* -
## math

A farmer with 2000 meters of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?

*asked on October 3, 2011* -
## CHEMISTRY

calculate the number of moles of solute present in 124.0g of a solution that is 6.45% glucose by mass.

*asked on October 14, 2010* -
## Math

what is the smallest number that 54 can be multiplied by to give a perfect square?

*asked on September 15, 2016* -
## physics

a lever is 5 m long. The distance from the fulcrum to the weight to be lifted is 1 m. If a 3000 N rock is to be lifted, how much force must be excerted on the lever?

*asked on January 21, 2009* -
## calculus

an open box is to be made from a piece of metal 16 by 30 inches by cutting out squares of equal size from the corners and bending up the sides. what size should be cut out to create a box with the greatest volume? what is the maximum volume?

*asked on November 18, 2011* -
## math

a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles

*asked on March 28, 2011* -
## chemistry

What volume of a 0.550 M solution of potassium hydroxide can be made with 14.3 g of potassium hydroxide? (Ignore significant figures for this problem.)

*asked on November 29, 2014* -
## geometry help!! answer all questions!! please

1) Write the translation that maps P(-4, 2) onto the point P ' (-1, -1)? 2) What are the coordinates of the reflection of the point (5,1) over the line y = x? 3) The coordinate notation for reflection over the y-axis is -?-. 4) If a translation has a

*asked on July 31, 2014* -
## english grammar

I am very sorry. What does the adverb very modify

*asked on December 8, 2015* -
## CHEMISTRY- vant hoff

a 0.100m k2so4 solution has a freezing point of -0.43 degrees. what is the van hoff factors for this solution? kf=1.86degree/m? 0.77 3.0 1.0 2.3 i have used the equation dT=iKfm and get -2.3?

*asked on October 14, 2010* -
## Macroeconomics

Suppose that Paulie and Vinny each can produce ice cream or t-shirts. it shows the quantity of each good that Paulie and Vinny each can produce in one hour, respectively, if they devote all of their time and effort into making the good. paulie can make 3

*asked on September 20, 2015* -
## physics

a book weighs 6 n. when held at rest above your head the net force on the book is?

*asked on January 21, 2009* -
## Algebra

does anybody have the answers to the rest of the lesson 2 semester B exam (algebra 1 B unit 7 semester B exam and review) in math?

*asked on May 19, 2020* -
## Science

A scientist crossed a white flower with a red flower.He expected some offspring to be white and others to be red.Instead,many offspring were pink.What occurred and how can you tell?

*asked on February 20, 2020* -
## Geography

In the early 1600s, Bhutan's religious and political power was consolidated by a Tibetan A. mantra B.lama C. dzong D. stupa i am not sure if its mantras or dzong but im going more for mantras because it say some Hindus and Buddhist recite mantras for

*asked on November 28, 2019* -
## geography

Why does traditional Chinese medicine affect worldwide wildlife populations? A.Traditional Chinese medicine is against the law in China. B.China has little wildlife remaining, so it must import animal products. C.It is less expensive to obtain these animal

*asked on December 2, 2019* -
## Life orientation

How they influence effective communication attitudes and values?

*asked on February 26, 2019* -
## Chemistry

When you mixand separate CaCO3 and SiO2 with acetic acid-vinegar, it is a chemical reaction. It bubbles and CO2 is produced. What property of CaCO3 causes this to happen? Could you explain this to me pls. I am guessing the acetic acid reacts with one of

*asked on September 21, 2016* -
## chemistry

If I have a sample from doing a half lfe lab with m&ms, not timed, just pulling out decayed or m&ms with rhe m on top, how do I calculate the half life using t1/2=(.693)/k formula. Do I have to do this 9 times as it took 9 trys to use up all the m&ms. I am

*asked on May 29, 2016* -
## language arts

1. What is the prepositional phrase in the sentence: The family drove to the store. a. the family drove b. drove to the store c. the family d. to the store *** 2. What is the appositive phrase in this sentence: My mother, Rebecca, loves to eat pumpkin pie.

*asked on May 3, 2016* -
## chemistry

which system is under higher pressure, a column of mercury or a column of water

*asked on April 7, 2011* -
## Riddle

how did the hunter get hurt while bending over to study some tracks?

*asked on November 22, 2009* -
## Pre- algebra Math 6 th grade Gifted

what is the sum of the numbers 1 to 1000? ans:500500

*asked on October 28, 2009* -
## Chemistry

A sample consisting of 22.7 g of a nongaseous, unstable compound X is placed inside a metal cylinder with a radius of 8.0 cm, and a piston is carefully placed on the surface of the compound so that, for all practical purposes, the distance between the

*asked on January 5, 2009* -
## math

what is 1:56:20+1:01:13+1:50:05

*asked on April 23, 2020* -
## algebra

Could you give me an example of a linear equation with a variable on both sides of the equal sign? Please don't look one up. You don't have to give the answer to the equation. It can only have one solution.

*asked on February 15, 2020* -
## math

Suppose you want to build a rectangular sandbox where the width is 5 feet less than the length and the diagonal is 5 feet longer than the length. What are the dimensions of the sandbox?

*asked on April 3, 2019* -
## physics

a drum holds 90 kg of water or 60 kg of gasoline. determine (a) the relative density of gasoline (b) the density of gasoline (c) the capacity of drum.

*asked on November 16, 2017* -
## Social studies

How die a compound interest rate differ from a simple interest rate? Compound interest rates pay more interest over time Compound interest rates are calculated only once a year Compound interest rates ideally lower than simple interest rates•• Compound

*asked on May 11, 2017* -
## Math

a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it, and choose again. what is P(read, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41••

*asked on May 11, 2017* -
## Math

A spinner is divided into 10 equal sections numbered from 1 to 10. You spin the spinner once. Find P(not even). A. 1/3 B. 1/2 •• C. 1/5 D. 1/4

*asked on May 11, 2017* -
## math

On the blueprints of Adam's office building, the length of his rectangular office space is 5 1/4 inches. If the actual length of Adam's office space is 10 1/2 feet, what is the scale of the blueprint?

*asked on December 14, 2016* -
## chemistry

Element x Isotope 55x 60% Isotope 56x 30% Isotope. 57x 10% 55× 60 =3300 56×30=1650 57× 10= 570 Add them up5520 divide by 100 the atomic weight of x is 55.2 Pls check if this is correct , answer and method

*asked on October 14, 2016* -
## algera

A cash register contains only ten dollar and fifty dollar bills. It contains three times as many ten dollar bills as fifty dollar bills and the total amount of money in the cash register is $2,080. How many ten dollar bills are in the cash register?

*asked on September 11, 2016* -
## chemistry

Sig figs 33.067. 5 sig figs .0908. 3sig figs 1099. 4 .0087. 2 check pls

*asked on September 10, 2016* -
## math

three fireworks are fired at the same time. The first one is fired every 64 seconds, the second one is fired every 84 seconds and the third one is fired every 96 seconds. How many seconds after they start will it take until all three fireworks are again

*asked on September 9, 2016* -
## chemistry

What particle is needed to complete this equation 14/7N+ _______=14/7C+ 1/1H I think it is a beta particle because of beta decay and transmutation. I could be really off because this chapter is really confusing me.

*asked on May 30, 2016* -
## geometry and trig

If a cylinder with a 4 inch diameter and a 6 inch height holds 1 pound of oatmeal. How much oatmeal will a cylinder (similar) with a 10 inch diameter hold? Volume of 4 in-----24pi volume of 10 in----137pi I get 91 oz choiced are37,44,74, 192

*asked on May 10, 2016* -
## Science

What is anything that has mass and takes up space? 1) Weight 2) Volume 3) Density 4) Matter When you measure the boiling point of mercury, you are investigating a ____. 1) Chemical change 2) Chemical property 3) Physical change 4) Physical property Ab

*asked on April 6, 2016* -
## chemistry

In the red cabbage lab, we just took the cabbage juice and in 5 separate cups mixed it with 5 different liquids, ex: coke, milk, cleaning agent, etc, and matched the color to a ph chart to tell if it was a base or an acid. Simple lab. The question needs a

*asked on March 5, 2016* -
## Chemistry

Explain the chemical changes that occur in the red cabbage lab that changes the color of the cabbage juice. I know it has something to do with the hydrogen ions and maybe something to do with the electrons, but I don't understand what or how to answer this

*asked on March 4, 2016* -
## help me please

What steps take place during DNA replication

*asked on January 12, 2016* -
## Maths trig

Sketch the graphs of f(x)=3overx+1 and g(x)=-2x-4 on the same set of axes

*asked on June 17, 2015* -
## nutrition

Created a nutritional care plan for the client. Included an evaluation of nutritional risk, listing of interventions, and expected outcomes. Listed the goals of medical nutrition therapy for the patient and suggested an appropriate diet. Identified whether

*asked on May 14, 2015* -
## chemistry

2KClO3-2KCl+3O2 If this reaction produced 35.2 g of KCl, how much O2 was produced (in grams)?

*asked on February 25, 2015* -
## Math

David drew a scale drawing of a table.The real table is 12 feet long.I measured out in inches that the height was 1/2 and the length was 2.But my question is What scale did he use?

*asked on February 11, 2014* -
## English

Which is the better strategy for reading comprehension?

*asked on May 31, 2013* -
## CHEM- solution/freezing piont

a solution of sulfur (2.560g) in naphthalene (100g) freezes 0.68K lower the freezing point of pure naphthalene (353.10K). for naphthalene, Kf= 6.8K kg mol. calculatem the molecular formula of the sulfur dissolved in the naphthalene?

*asked on October 14, 2010* -
## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

*asked on October 13, 2010* -
## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

*asked on October 13, 2010* -
## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

*asked on October 13, 2010* -
## CHEMISTRY- answer check

A 0.386g sample of a protein was dissolved in water and made up to a volume of 60mL at 21.0°C. At this temperature the osmotic pressure of this solution was 1.24mmHg. Calculate the molecular mass of the protein 12682 g mol-1 95025 g mol-1 9627613 g mol-1

*asked on October 9, 2010* -
## English

Hello! I need some help with my english homework. we have to compare the industrial and the mechanical revolution. we got 3 questions. 1. what are the dates? 2.what are the settings? 3. differences. pls help,if you know the answer!

*asked on January 26, 2010* -
## German

Hello! Ich muss bis Dienstag eine erörterun schreiben. Titel: Niveauvolle Schulen ermöglichen bessere Ausbildung und Arbeitsleben. Ideen? stichwörter?kann jemand ein Paar Sätze schreiben? dke sehr!

*asked on November 22, 2009* -
## English

Hello! I don't want to ask for help with my homework, aI have some more serious problem.... next year I will go to collage, i will graduate in May. I really want to study law in Vienna, but I only found Uni Wien....does somebody know any other university,

*asked on October 28, 2009* -
## Urgent Chemistry!!

I have done everything to solve this problem and I can't get the right answer (153.8J/degrees C). Ammonium nitrate, a component of fertilizer, decomposes: NH4NO3(s) > N2O(g) + 2H2) (g) the delta H=-36.0kJ/mol. 7.65g of ammonium nitrate was allowed to

*asked on November 20, 2008* -
## Calculus

Find the scalar equation of the plane through the points M(1,2,3) and N(3,2,-1) that is perpendicular to the plane with equation 3x + 2y + 6z +1 = 0. I know that normal of the latter equation is (3,2,6) but now what do I do? Thanks.

*asked on July 7, 2008* -
## Mathematics

THINKING QUESTION Create a quadratic equation in the form ax² + bx + c = 0 that crosses through the points (2/3, 0), and (-4, 0). The variables a, b, and c must be integers (whole numbers).

*asked on May 24, 2020* -
## Mathematics

A toy rocket is launched from a 3m platform, at 8.1 m/s. The height of the rocket is modelled by the equation h= -4.9t^2 + 8.1t + 3, where h is the height, in metres, above the ground and t is the time, in seconds. 1. After how many seconds will the rocket

*asked on May 15, 2020* -
## Science

Joshua trees cannot germinate and grow as easily in today's warmer climate. Which of these actions would be most likely to help the species survive climate change? Limiting the height of the tree. Becoming a mature plant without leaves. Growing in a range

*asked on February 25, 2020* -
## Science

Which factor should be included in a model of energy flow into the atmosphere? variations in local temperatures places experiencing drought concentrations of greenhouse gases number of flood days per year How does climate change affect energy in the

*asked on February 15, 2020* -
## algebra

Could you give me an example of a linear equation with two variables? Please don't look one up. You don't have to give the answer to the equation.

*asked on February 15, 2020* -
## science

Which factor should be included in a model of energy flow into the atmosphere? variations in local temperatures places experiencing drought concentrations of greenhouse gases number of flood days per year How does climate change affect energy in the

*asked on February 14, 2020* -
## Science

Scientists believe that the (Milankovitch cycles, tilt of the earths axis, sea levels, low temperature) explain why Earth’s (climate has, tilt of earths axis has, low temperatures have, sea levels have) fluctuated between glacial periods and interglacial

*asked on February 14, 2020* -
## world geography

"loss of biodiversity" is the same as "lost to deforestation" right?? im french so i just want to be sure my english is correct. lol

*asked on December 2, 2019* -
## world geography

"City residents affected by health problems from the plant’s toxic emissions prompted the government, for the first time, to shut down a state-run factory. In early 2013, a state of emergency was declared in Beijing due to terrible air quality." How did

*asked on December 2, 2019* -
## Math

Rachel is placing playing cards on a table by following these steps. Step 1: First she places one card in the middle of the table. Step 2: Next she adds one more card directly to the left, to the right, and below the first card. Step 3: Next she adds one

*asked on November 11, 2019* -
## History

Which of the following were new transport technologies after the Revolutionary War? Select all that apply. Turnpikes*** Automobiles Railroads*** Airplanes

*asked on November 11, 2019* -
## Math

John draws a square on a coordinate plane. Then, he draws an image of the square 3 units to the right of the original square. What is true about the corresponding sides of the original figure and the image? A. The corresponding sides are skew. B. The

*asked on August 26, 2019* -
## physics

a 5.67g quarter sits on a record player a distance of 5cm from the axis of rotation. if the angular speed of the record player is 33 revolutions per minute, what should the coefficient of friction be to keep it from sliding?

*asked on April 27, 2018* -
## math

11 the 2 second power minus 7 times 6 minus 4 to the third power divided by 2

*asked on February 12, 2018* -
## Math

Spence wants to do by 4 1/2 pounds of peanuts evenly among her 12 students period how many ounces can she give each student?

*asked on May 15, 2017* -
## Math

a number cube is rolled 150 times. the number 3 comes up 43 times. hat is the experimental probability of rolling a 3? what is the theoretical probability of rolling a 3? A. 43/150 ; 1/6 B. 43/150 ; 1/50 •• C. 1/6 ; 43/150 D. 3/43 ; 1/6

*asked on May 11, 2017* -
## Math

you draw five card from a standard deck of 52 cards p(heart)=4/5. what type of probability is illustrated and why?? 1) Theroretical ; the result is based on then number of possible outcomes 2) Theroretical; the result is found by repeating an experiment

*asked on May 11, 2017* -
## math

in the middle circle have rectangle with length 12 and wide 5, find shaded area between rectangle and circle

*asked on April 1, 2017* -
## Algebra 2

Solve by elimination -2x+2y+3z=0 -2x-y+z=-3 2x+3y+3z=5 Please help. I have 5 pages and 3 hours spent and found the question on Google, but the calculations did not add up correctly. Thank you

*asked on March 8, 2017* -
## math

If A= X^2+2x+1, B=x=1 Find: A+B=

*asked on February 18, 2017* -
## math

(x/50)+(x/25)+(3x/50)+(2x/25)+...+2x=

*asked on February 16, 2017* -
## algebra 2

Absolute value 9 [9 - 8x] = 2× + 3 9 [9 -6×] =3 9 [-6x] = -6 54x = -6 x= -1/9 , × = 1/9 Is this correct? If not could you explain please. Thank you

*asked on February 6, 2017* -
## algebra 2

These are absolute value questions. [-4b -8] + [-1b -b^2] + 2b^3. b=-2 given [8] + [2 (4)] +-8 Answer =8 Is this correct?

*asked on February 6, 2017* -
## chemistry

2Na + 2H2O---> 2NaOH + H2 Need to find the molecules of H2 Atomic wt o Na = 23 48.7 g of Na 48.71/23 = 2.12 mols Na 2.12/2 × 24. (WHERE DOES THE 24 COME FROM) = 25.44 dm^3 H. (PLEASE EXPLAIN THIS PART) = 1.06moles 1.06mols× 6.02×10^23 avagados number=

*asked on January 7, 2017* -
## algebra

P +4- 2 (p-10)> 0 Please check, it was marked wrong P+4 -2p +20 > 0 -p+ 24> 0 -p >-24 P > 24 Answer choices are 29, 26, 24, 22 Please explain thank you

*asked on January 4, 2017* -
## Math

What does 5 yards 2 feet 3 inches plus 2 yards 2 feet 9 inches equal?

*asked on January 4, 2017* -
## algebra

Could you please help? What are the solutions of the compound inequality? 2x - 2 < - 12 or 2x+3 > 7 Is this one x < - 5 or x> 2 2x -1/3 +3 = 6. This one is 2x-1 divided by 3 plus 3 is less than or equal to - 4 or 8x -2 divided by 2 minus one is greater or

*asked on January 2, 2017* -
## Math

I don't know how to do my homework I'm in 4th grade and in Manchester gate in m's snyders class help me ppplllzzzz Its 2016

*asked on December 14, 2016* -
## chemistry

Is this balanced properly 2H2O2----> 2H2O +O2 Thank you for the reactions of zinc and acetic acid. REAL QUESTION, if I was to rub all the copper off of a new penny down to the zinc, what would be the appearance of the zinc if I left it in vinegar (acetic

*asked on November 13, 2016* -
## chemistry

Dr Bob, Sorry about this penny thing, but if I was to put pure zinc into acetic acid, what would happen to the zinc?

*asked on November 13, 2016* -
## Chemisry

If you put copper coated penny 1983or newer, in vinegar, it turns blackish green. If you rub the copper off half the penny first and expose the zinc, put the penny in vinegar, will the results change? Thank you.

*asked on November 13, 2016* -
## Math

How many letters are there in the correct answer for this question? a. One b. Two c. Three d. Four e Five

*asked on November 8, 2016* -
## Masth

How many letters are there in the correct answer for this question? a. One b. Two c. Three d. Four e Five

*asked on November 8, 2016* -
## algebra

Could you pls tell me why I have to change this sign. You should look at the sign like an equal sign. -2/5x -9 < 9/10 -2/5x < 99/10 x < -24.75 Why is this wrong? - I know the answer should be x> -24.75, but why? if this got sent twice, it is by error.

*asked on November 8, 2016* -
## algebra

Could you pls tell me why I have to change this sign. You should look at the sign like an equal sign. -2/5x -9 < 9/10 -2/5x < 99/10 x < -24.75 Why is this wrong? - I know the answer should be x> -24.75, but why?

*asked on November 8, 2016* -
## Maths

Anne & Tom competed in the 200m long distance swimming race. After the first 50 meters, Anne had gained 2 seconds against Tom's time. Over the next three laps, Tom gained 1.5 seconds, then lost 2.1 seconds and then gained 1.7 seconds. Who is the winner and

*asked on November 1, 2016* -
## Matrh

Anne & Tom competed in the 200m long distance swimming race. After the first 50 meters, Anne had gained 2 seconds against Tom's time. Over the next three laps, Tom gained 1.5 seconds, then lost 2.1 seconds and then gained 1.7 seconds. Who is the winner and

*asked on November 1, 2016* -
## US History

If you have a map of 19th century US and the names of the states are changed to Irish names, ie: Irish Sea , Mulligan, etc. And the question was to compare the map to a typical US map, would you answer with just explaining the obvious changes, or is there

*asked on October 30, 2016* -
## math

Give reason 8454 is divisible by 6

*asked on October 24, 2016* -
## chemistry

Back to the atomic emmission spectrum and the atomic theory. in the 1900s, scientists observed that when a gaseous element, such as hydrogen was subjected to an electric discarge that the atoms emitted electromagnetic radiation. The light emmitted could be

*asked on October 15, 2016*