Saturday

February 13, 2016
**Math (Riemann Sums)**

Measurements of a lake’s width were taken at 15-foot intervals, as shown: x= 0 15 30 45 60 75 90 105 120 f(x)= 0 15 18 20 19 23 24 22 12 Estimate integral (0,120) f(x) dx with n = 4, using Midpoint approximation. For this question, I ended up with 7200 but compared to the...
*Tuesday, May 12, 2015 by Pax*

**Calculus, Riemann Sums**

Measurements of a lake’s width were taken at 15-foot intervals, as shown: x= 0 15 30 45 60 75 90 105 120 f(x)= 0 15 18 20 19 23 24 22 12 Estimate integral (0,120) f(x) dx with n = 4, using Midpoint approximation. For this question, I ended up with 7200 but compared to the...
*Tuesday, May 12, 2015 by Pax*

**Science**

True or False. Winds usually move from areas of low pressure to areas of high pressure.
*Monday, May 11, 2015 by Idk.*

**Statistics**

The average daily high temperatures in Lawton are approximately normally distributed with a mean of 58 degrees and a standard deviation of 12 degrees. Find the probabilities below: The probability that the high would not exceed 65 degrees on any one day. The probability that ...
*Monday, May 11, 2015 by Gabriella*

**Math**

I have all the answers for c I just need to make sure I am correct. For b I am a little lost. For a I have the answer but I know I am probably wrong. The city of Valley Grove is considering shortening the length of the school day. The school board hired Mr. Kent to do a survey...
*Monday, May 11, 2015 by Cindy65*

**L.A Ms. Sue? or anybody?**

1. Which of the following aspects of the setting is evidence that the giver is an example of science fiction A. Jonas rides a bike to school every day B. jonas's father works in a daycare center C. a loudspeaker makes announcements to the community. D. Jonas lives in a ...
*Monday, May 11, 2015 by anonymous*

**Science**

Can you plz check asp 1. Suppose the total momentum of two masses before a collision is 100 kg m/s. What is the total momentum of the two masses after they collide? (1 point) 0 kg m/s 50 kg m/s 100 kg m/s 200 kg m/s 2. What is the momentum of a 20.0 kg scooter traveling at 5....
*Monday, May 11, 2015 by Stephanie*

**Life oriantetion**

Five interview question you will use to evaluate the understanding of service delivery protest by the lerners in school
*Monday, May 11, 2015 by Hunadi*

**Math**

Tobias is helping his uncle paint the side of a barn. Each can of paint covers 80 square feet. If the side of the barn is 10 feet high and 15 feet wide, how many cans of paint will Tobias need?
*Sunday, May 10, 2015 by Laura*

**Creative arts**

I need a monologue for girls to present in front of the whole school tomorrow
*Sunday, May 10, 2015 by Bongiwe gamede*

**trig**

a vertical pole 35 feet high, standing on sloping ground, is braced by a wire which extends from the top of the pole to a point on the ground 25 feet from the foot of the pole. If the pole subtends an angle of 30 degree at the point where the wire reaches the ground, how long ...
*Sunday, May 10, 2015 by thrish*

**Math**

The angle of elevation of the top of house from the bottom of a tower 160m high is 26 degree.From the top of the tower the angle of elevation is 24 degree.What is the height of the house if the tower and the house are 50m apart?
*Saturday, May 9, 2015 by Perpetua*

**trigonometry**

An aircraft at C is spotted by two observers at A and B who are L=1650 feet apart. As the airplane passes over the line joining them, each observer takes a sighting of the angle of elevation to the plane, as indicated in the figure. If a=35 degrees and B=25 degrees, how high ...
*Friday, May 8, 2015 by naisha*

**ART**

HEllo i need help on mixing colors because at school i dont have enough of the needed colors. So plz tell me how to mix and get : Orange Green Yellow BROWN! (For the big tree im drawing) And purple thank you and answer ASAP plz!
*Thursday, May 7, 2015 by Samantha*

**History Check Please**

1. One reason Texans elected William Clements governor in 1978 was his (1 point) political experience. lack of political experience.* support for urban dwellers. association with the Democrats. 2. Workers in maquiladoras (1 point) receive low wages. receive high wages. are ...
*Thursday, May 7, 2015 by YOLO*

**Chem**

The combustion of hydrogen with oxygen is used to produce extremely high temperatures needed for certain types of welding procedures. What is the quantity of heat generated, in kj, when a 180g mixture containing equal parts oxygen and hydrogen gasses by masses burned? (Δ...
*Thursday, May 7, 2015 by carolin*

**PHYSICS**

Consider a classroom 10.0m long by 6.0m wide by 4.0m high at "room temperature" 20.C and 1.0 atmosphere. A) How many moles of gas are contained in the room? B) Assuming an average molecular weight of 28, what is the mass of the room air?
*Thursday, May 7, 2015 by Physics*

**Maths**

The angle of elevation of the top of a house from the bottom of a tower 160m high is 26.from the top of a tower the angle of elevation is 24.what is the height of the house if the tower and the height are 50m apart?
*Thursday, May 7, 2015 by Dami*

**Chem**

The combustion of hydrogen with oxygen is used to produce extremely high temperatures needed for certain types of welding procedures. What is the quantity of heat generated, in kj, when a 180g mixture containing equal parts oxygen and hydrogen gasses by masses burned? (Δ...
*Wednesday, May 6, 2015 by carolin*

**Calc**

A ball is thrown straight up from the top of a 200 foot building with an initial velocity of 40feet/second. acceleration due to gravity is -32feet/second. a) find a formula for the height of the ball at time t. b) how high does the ball rise before it begins to fall c) when ...
*Tuesday, May 5, 2015 by Jason*

**MATH ONE QUESTION!**

The student council is making six right triangular pennants to promote school spirit. Each right triangle is 9 inches high and 2 feet long. In square feet, what is the total area of six pennants.
*Tuesday, May 5, 2015 by Anonymous*

**question**

Tomorrow is my English exam. do you think I can get high marks?
*Tuesday, May 5, 2015 by verver*

**math **

A kite with a string 30 meters long makes an angle of elevation of 60° with the ground, assuming the string is straight, how high is the kite? Round your answer to the nearest tenth. Do not include units.
*Monday, May 4, 2015 by rebal*

**Math**

Carmen and Susan are members of their school’s running club. The length of the circular track at the school is 1/10 of a mile. In the time it takes Carmen to run 3 times around the track, Susan runs 4 times around the track. A. In the time it takes Carmen to run 12 times ...
*Monday, May 4, 2015 by Anonymous*

**Physics**

a 4.0 cm high object is placed 5.10 cm from a concave mirror whose redius of curvature is 21.2 cm. Find the inmage distance and the image size.
*Monday, May 4, 2015 by Jacbo*

**Maths **

A pool is 12m long and 7m wide it is surrounded by a 3m paved area on all sides the whole complex is enclosed by a 2m high fence what is the total length of this fencing
*Monday, May 4, 2015 by Peter*

**Chemistry**

Question 2 - Liquid vitamin C, (ascorbic acid) C6H8O6 , readily reacts with atmospheric oxygen, O2, to form liquid dehydroascorbic acid, C6H6O6 and water. a) Explain why this is a chemical reaction. b) Write a balanced equation for this reaction. c) How many mole of oxygen gas...
*Monday, May 4, 2015 by Steeve*

**Science**

There are 2 high and 2 low tides each day. Why do this many tides occur each day?
*Sunday, May 3, 2015 by Mark*

**science**

A 80 kg firefighter climbs flight of stairs 6 meter high in 10 seconds. How much work is required by the firefighter?
*Sunday, May 3, 2015 by andro*

**Physics Help Please**

A 35-mm camera equipped with a 40-mm focal length lens is used to photograph a tree 17 m tall. If a 32-mm high image of the tree on the CCD sensor is required, how far should the camera lens be from the tree? Show Work Please! Thank you so much!
*Sunday, May 3, 2015 by Need Help Urgent*

**math**

A wall in Marcus's bedroom is 8 2/5 feet high and 18 1/3 feet long. If he paints 1/2 of the wall blue
*Sunday, May 3, 2015 by M*

**Physics Help Please**

A 35-mm camera equipped with a 40-mm focal length lens is used to photograph a tree 17 m tall. If a 32-mm high image of the tree on the CCD sensor is required, how far should the camera lens be from the tree? Show Work Please! Thank you so much!
*Saturday, May 2, 2015 by Need Help Urgent*

**math**

You were given 10 math problems for homework. You completed 310 of them at school. Which equation shows how to find the fraction of the problems you still must do to complete your homework?
*Saturday, May 2, 2015 by john*

**5th grade math**

Jeff put small box that is 12 inches long, 8 inches wide, and 4 inches tall inside a box that's 20 inches long, 15 inches wide, and 9 inches high. How much space is left in the larger box?
*Thursday, April 30, 2015 by Chris*

**Math**

Allie's plant has a height of 6 meters. rayon's plant grows 3/10 meter higher . How high does Rajon's plant grow?
*Thursday, April 30, 2015 by Smita*

**physics**

A stone is dropped from the top of a cliff which is 100m high. At the same time another stone is vertically thrown upwards from the foot of the cliff woth a speed of 40m/s.AT what height and when do the stones meet
*Thursday, April 30, 2015 by asgf*

**English**

1. I couldn't go to school for some weeks. 2.I couldn't go to school some weeks. ============ Can we delete 'for' as in #2?
*Wednesday, April 29, 2015 by rfvv*

**English**

1. I want to help Mohamed look for my school's gym. 2. I want to help Mohamed look for my school gym. 3. I want to help Mohamed look for the gym of our school. 4. I want to help Mohamed look for the gym of my school. ================ Which ones are grammatical? Can we use #1?
*Wednesday, April 29, 2015 by rfvv*

**Math**

Perry's Publishing is relocating and 2 employees, Edna and Sam have created a "For sale" sign 4 feet long to place outside the current premises. They plant o attach the sign to a 9-foot pole using a hook and a chain. They would like the top of the sign to be 6 ...
*Wednesday, April 29, 2015 by M*

**Chemistry **

Solarcaine aerosol spray is used for temporarily relieving pain as it works as a topical anesthetic numbing the skin. Solarcaine is in fact benzocaine, C9H11NO2 with molar mass 165.2 g/mol. If a 100.0 mL spray can contains 1.00 g of benzocaine, calculate the pressure within ...
*Wednesday, April 29, 2015 by Caitie*

**Pressure**

Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 750mmHg and a temperature of 23∘C. What would the pressure be if the can were heated to ...
*Wednesday, April 29, 2015 by Chemistry*

**Math**

How much glas is needed to make a fish tank that is 12 inches long, 8 inches wide, and 9 inches high? The tank is open on top.
*Wednesday, April 29, 2015 by Em*

**Math**

Find the volume of a regular square pyramid that is 8 m high and has the length of the side of the base as 9 m
*Wednesday, April 29, 2015 by Tim*

**physics**

a diver of mass 101 kg jumps upward off a diving board into water. Diving board is 6m above water. Driver has a speed of 1.2m/s. based on speed how high above the board will she rise?
*Wednesday, April 29, 2015 by danaja*

**English and Language Arts**

Which of the following would you find in the new English and Language Arts curriculum guidelines? A: An oral language program only at the primary grades B: A phonics program at all grades C: A writing program at all grades D: A study of core literacy works only in junior high
*Tuesday, April 28, 2015 by Bree*

**Physics please help **

He drops a ninja ball device from a height of 10.0m. The mass of the enter device is 190g and the mass of the top (smallest) ball is 2.90g A) calculate the momentum of the device as it hits the ground (ignore air resistance) I know that this answer is 2.66 for sure B) if the ...
*Tuesday, April 28, 2015 by Maddie *

**Math**

file:///C:/Users/SCHOOL/Pictures/math.JPG Determine which function has the greater rate of change 1.The rates of change are equal. 2.The graph has a greater rate of change. 3.The table has a greater rate of change.*** 4.none of the above Is this right?
*Tuesday, April 28, 2015 by Charity *

**Math**

Determine which function has the greater rate of change 1.The rates of change are equal. 2.The graph has a greater rate of change. 3.The table has a greater rate of change. 4.none of the above file:///C:/Users/SCHOOL/Pictures/math.JPG HELP ME UNDERSTAND THIS PLEASE??
*Tuesday, April 28, 2015 by HELP*

**Algebra**

Jess saved $500 working during the summer. He plans to buy school clothes with his money. He found jeans he liked for $30 per pair, including tax, and shirts for $17, including twice. If he buys exactly twice as many shirts as jeans, how many pairs of jeans can jess buy ...
*Tuesday, April 28, 2015 by Kimberly*

**physics**

A mass is attached to a vertical spring, which then goes into oscillation. At the high point of the oscillation, the spring is in the original unstretched equilibrium position it had before the mass was attached; the low point is 8.6cm below this. What is the period of ...
*Tuesday, April 28, 2015 by Anonymous*

**English, pls help**

Pls help "About Russell" 27. During "the greatest kickball game ever," Russell (1 point) scores the winning point. leaves with the ball. causes his team to lose. starts an argument, ending the game. 28. When Rita beats Russell at chess, she is amazed that ...
*Tuesday, April 28, 2015 by Anny*

**English, pls help asap**

Pls help "About Russell" 27. During "the greatest kickball game ever," Russell (1 point) scores the winning point. leaves with the ball. causes his team to lose. starts an argument, ending the game. 28. When Rita beats Russell at chess, she is amazed that ...
*Tuesday, April 28, 2015 by Anny*

**Math**

The cost of a student ticket to the school play is $7. Write an equation that correctly relates the cost, c, for a particular number of student tickets, s, purchased. Identify the independent and dependent variables.
*Tuesday, April 28, 2015 by Priscilla*

**Hallandale high**

2. What can be concluded about the female character referred to in these lines? "Make one," said Anthony. "Take her for a walk in the park, or a straw ride, or walk home with her from church Chance! Pshaw!" "You don't know the social mill, dad. [ ...
*Tuesday, April 28, 2015 by larry jones *

**Economics**

A business can produce its product in different versions: Version A has a basic design and a lower cost and Version B has an upgraded design and a higher cost of production. The business knows there are different types of customers, “High” demand (H) and “Low&#...
*Tuesday, April 28, 2015 by John*

**math**

The volume inside a rectangular storage room is 2,025 cubic feet. The room is 9 feet high. Find the area of the floor.
*Tuesday, April 28, 2015 by joey*

**5th grade (math)**

Leslie and Jess were racing at school. Leslie was able to complete the race in 12 1/2 seconds, whereas jess finished in13 1/10 seconds. How much faster did Leslie run? PLs help me!!
*Tuesday, April 28, 2015 by ary*

**Geometry**

A school's wrestling mat is a square with 50 ft sides. A circle 28 ft in diameter is painted on the mat. No wrestling is allowed outside the circle. Find the area of the part of the mat that is NOT used for wrestling. Use pie=22/7.
*Monday, April 27, 2015 by Andrea*

**Algebra**

At Central High School, the sophomore class has 60 more students than the freshman class. The junior class has 50 fewer than twice the number of students in the freshman class. The senior class is three times as large as the freshman class. If there are a total of 1,424 ...
*Monday, April 27, 2015 by Anonymous*

**History **

Which explains why the Compromise of 1850 intensified the argument about slavery? A- People for and against slavery migrated to Western stats to influence laws. B~Free states in the West added more antislavery votes to Congress. C~The equal division of slave and free ...
*Monday, April 27, 2015 by Emma*

**chemistry**

Suppose that a student performing this experiment recorded the concentration of NaOH solution as 0.513 M, instead of the correct value of 0.531 M. Assuming there were no other errors, would each of the following experimental results be high, low, or unaffected by the error? ...
*Sunday, April 26, 2015 by kales*

**English**

Is this sentence punctuated correctly? At elementary school, my teacher delighted in handing me worksheets crowded with row upon row of three to five digit long division problems.
*Sunday, April 26, 2015 by Luke*

**math**

King Arthur II has problems with pronouncing the digit 3. People are afraid of presenting something which includes 3 in it. The solution found is that if any number includes 3 as a digit, the number is divided by 2. This process continues as far as the new numbers include new ...
*Sunday, April 26, 2015 by ani*

**math**

A company is designing a juice box. The box is in the shape of a rectangular prism. The base of the box is 6 1/2 inches by 2 1/2 inches, and th box is 4 inches high. If juice fills 90% of the box's volume, find the volume of juice in the box. Thank you!
*Sunday, April 26, 2015 by kymy*

**physics133**

1 The principle of conservation of heat energy states that that when an object is at constant temperature or is in thermal equilibrium, it is losing and gaining heat at equal rates. the heat lost by a hot body is equal to the heat gained by the cold body in any system provided...
*Saturday, April 25, 2015 by Cali franco*

**Math**

You want to find out what the favorite hot lunch in the school cafeteria is among the high school students. At an assembly for the whole school, you decide to survey all students who are sitting on the end of their rows in the auditorium. What type of survey are you conducting...
*Saturday, April 25, 2015 by Steve*

**PHYSICS answer check**

a gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. a)What is the speed of the bullet as it leaves the gun? b)If the gun is fired straight up, how high will the bullet go? a)200J b)m*g*h= (0.02kg)(10m/s^2)=200J h=100m
*Saturday, April 25, 2015 by MJW*

**physics**

Which of the following is the correct unit of k in the equation of a damped harmonic oscillator given as , where b is the damping factor and all the symbols have their usual meaning? 2 If s is distance and t is time, what must be the dimensions of a and b in the equation...
*Saturday, April 25, 2015 by Cali franco*

**trigonometry pls help**

Howard is flying a kite and wants to find its angle of elevation. The string on the kite is 32 meters long and the kite is level with the top of a building that he knows is 28 meters high. To the nearest tenth of a degree, find the angle of elevation. Show your work.
*Saturday, April 25, 2015 by allexelle*

**physics 111 "2"**

1 A stone thrown from ground level returns to the same level 4 s after. With what speed was the stone thrown? Take 20 m/s 10 m/s 30 m/s 15 m/s 2 What is common to the variation in the range and the height of a projectile? time of flight vertical acceleration horizontal ...
*Friday, April 24, 2015 by Cali franco*

**physics 133**

1 Which of the following is the correct unit of k in the equation of a damped harmonic oscillator given as , where b is the damping factor and all the symbols have their usual meaning? 2 If s is distance and t is time, what must be the dimensions of a and b in the equation...
*Friday, April 24, 2015 by Cali franco*

**Social studies**

1. Which word best describes modern life for Japanese teenagers such as Asuka? relaxed crowded isolated traditional 2. Tropical storms often hit Japan during the ________. summer winter spring fall 3. Which of Japan's islands has the largest level area? Hokkaido Honshu ...
*Friday, April 24, 2015 by Shawn*

**maths**

Frog jumps 3 m high and falls back 2 m. How many jumps does it come out of well.if frog is inside the 40m deep well
*Friday, April 24, 2015 by lakshmi*

**English**

WORDS: Averse Detract Disdain Divulge Elation Endow Expulsion Mortified Nullified Ominous ------------- Some people are so (1)averse to living near a nuclear plant that they want the plant’s license to be (2)nullify. They say the plant infringes on every homeowner’s ...
*Friday, April 24, 2015 by Sora*

** English**

From the book The Importance of Being Earnest by Oscar Wilde, which sentence from the passage provides the best expression of the theme? A."It's perfectly easy to be cynical. " B. "... once a week is quite enough to dine with one's own relations." C...
*Friday, April 24, 2015 by pink*

**physics**

a gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. What is the speed of the bullet as it leaves the gun? If the gun is fired straight up, how high will the bullet go?
*Thursday, April 23, 2015 by JJ*

**chemistry - kinetics**

Understanding the high-temperature behavior of nitrogen oxides is essential for controlling pollution generated in automobile engines. The decomposition of nitric oxide (NO) to N2 and O2 is second order with a rate constant of 0.0796 M−1*s−1 at 737∘C and 0....
*Thursday, April 23, 2015 by Kayla*

**physics**

a gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. What is the speed of the bullet as it leaves the gun? If the gun is fired straight up, how high will the bullet go?
*Thursday, April 23, 2015 by jean*

**math**

Santana wants to cover a gift box shaped like a rectangular prism with foil. The foil costs $0.03 per square inch. Santana has a choice between Box A which is 8 inches long, 3 inches wide, and 6 inches high, and Box B which is 10 inches long, 3 inches wide, and 4 inches high. ...
*Thursday, April 23, 2015 by Cara*

**Physics**

A gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. What is the speed of the bullet as it leaves the gun? If the gun is fired straight up how high will the bullet go?
*Thursday, April 23, 2015 by Anonymous*

**Physics**

The bird perched on the swing has a mass of 48.0 g, and the base of the swing has a mass of 159 g. The swing and bird are originally at rest, and then the bird takes off horizontally at 1.20 m/s. How high will the base of the swing rise above its original level? Disregard ...
*Thursday, April 23, 2015 by Dom*

**algebra 2**

Three hundred and fifty-eight tickets to the school basketball game were sold. Student tickets were $1.50 and non-student tickets were 3.25. The school made $752.25. How many student tickets were sold?
*Wednesday, April 22, 2015 by Megan*

**Trig**

The graph of y-7 cosθ + 24 sinθ would be a sinusoid if it were plotted. What would be the first positive value of θ at which there is a high point?
*Wednesday, April 22, 2015 by Elle*

**physics 111**

1. A monkey in a perch 20 m high in a tree drops a coconut above the head of a zoo keeper as he runs with a speed 1.5 m/s beneath the tree actually intending to hit the toes of the zoo keeper, how early in seconds should the coconut be dropped by the monkey. 2 A monkey in a ...
*Wednesday, April 22, 2015 by Cali franco*

**English**

What do you take to school? 1. I take the number 2 bus. 2. I take number 2 bus. 3. I take the bus number 2. 4. I take bus number 2. =========== Which one is grammatical and commonly sed?
*Wednesday, April 22, 2015 by rfvv*

**Lumuka secondary school**

What job can I do while I am doing Agricultural Sciences, Maths Literacy, Geography, Life Sciences, Life Orientation, Tsonga ang English.
*Wednesday, April 22, 2015 by Tsakani shilaluke*

**accounting**

Not recording the Prepaid Rent used causes A. assets to be too high. C. expenses to be too high. D. revenue to be too high. My answer is A
*Wednesday, April 22, 2015 by Emi*

**English**

What do you take to school? 1. I take notebooks, textbooks and pencils. 2. I take a bus to school. ======================== What is the answer to the question?
*Wednesday, April 22, 2015 by rfvv*

**English**

1. How do you go to school? By bus? Nio, I go there by subway. 2. What do you take to school? By bus? Nio, I go there by subway. ========================= Is #1 the same as #2? Can we use 'What do you take to school?' instead of 'How do you go to school?'
*Wednesday, April 22, 2015 by rfvv*

**Genetics**

A researcher who has pioneered cell-free fetal DNA testing to detect trisomies has received threats from people accusing her of killing babies. she counter that the test will actually saves lives. explain how the test can do this the accuracy statistics on cell-free fetal DNA ...
*Tuesday, April 21, 2015 by Shala*

**Calc**

A stone is thrown straight up from the edge of a roof, 625 feet above the ground, at a speed of 20 feet per second. A. Remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 2 seconds later?
*Tuesday, April 21, 2015 by Frank*

**Please Read**

I just wanted to say thanks to all of the teachers who help out the kids on here because without you guys we do not know where we would be. You guys take out the time of your day to help us out and I really appreciate it and I'm sure everyone else on here does also. Just ...
*Tuesday, April 21, 2015 by Kareemah*

**SS**

China's cities are growing rapidly due to A. a high percentage of arable land B. people moving there to look for work C. rural areas becoming too crowded D. the one-child policy A?
*Tuesday, April 21, 2015 by Help*

**math calc**

A water tower is located 354 feet from a building. From a window in the building, an observer notes that the angle of elevation to the top of the tower is 42° and that the angle of depression to the bottom of the tower is 20°. How tall is the tower? How high is the ...
*Tuesday, April 21, 2015 by Michael*

**Trigonometry**

A 19-ft ladder leans against a building so that the angle between the ground and the ladder is 80∘. How high does the ladder reach on the building? I did 19sin(80) to get me 18.76847847 for how high the ladder reach on the building... but when i put the answer, it's ...
*Monday, April 20, 2015 by Michael*

**Algebra**

The student council is asking people to donate money for the new park outside the school. Everyone who makes the suggested donation amount will be given a bracelet. If everyone donates the suggested amount, and b bracelets are given away, what algebraic expression represents ...
*Monday, April 20, 2015 by Carol*

**Trig**

Can you please help with this trig question: The angle of elevation to the top of a nearby mountain is 46 degrees. After walking 1 km toward the mountain, you determine the angle of elevation to be 68 degrees. How high is the mountain? Thank you for all your help.
*Monday, April 20, 2015 by Cassandra*

**English**

Where does the comma go in these sentences? 1. Usually castles sat on a hilltop, and had high stone walls. 2. Loo at this picture of a castle Cate.
*Sunday, April 19, 2015 by kelly*

**Science**

How does a hurricane form? A. It forms over warm ocean water as a low-pressure area. B. It forms over warm ocean water as a high-pressure area. C. It forms over cool ocean water as a low-pressure area. D. It forms over cool ocean water as a high-pressure area. Is the answer B...
*Sunday, April 19, 2015 by smoochy*

**Precalculus Trig (Geometry)**

A rectangular doorway is 38 meters wide and 60 meters high. The doorway is capped with a semi-ellipse that is 13 meters high at its center. Find the height h of the doorway and window 5 meters from the center. From the ellipse equation, I can see that a should be 19 and b ...
*Sunday, April 19, 2015 by Michele*