# Posts by Ellie

Total # Posts: 344

**trig**

Find all solutions in the interval [0, 360) 8cos^2x+6cosx+1=0

**Math**

The pizza shop offers the top being shown below how many different three topping pizzas can you make pepperoni mushrooms sausage onion ham 6 10 4* 5

**ELA**

What is the best summary of the speakers basic message in Annabel Lee? I am heartbroken and I will never stop loving annabel lee.* Annabel Lee and I were friends from the time we were children. I am heartbroken I will and I will get revenge for Annabel lees death. Annabel Lee...

**Language arts**

What would you expect to be Downy? A diamond ring A baby rabbit * A pair of jeans A fallen pine cone In which sentence do the subject and verbs agree? Both cats and dogs sometimes gets fleas. Neither Philip nor Angie wants to cancel the show.* Automobiles and factories ...

**Statistics **

I am having a really rough time figuring out how this expected value was found in this Chi Square problem. 272 flies had long normal wings 60 flies had dumpy wings I know it's going to be a 3:1 ratio, and I know that 272 and 60 are my observed variables. This is how the ...

**Physics**

Consider a child standing on a beach who gets hit by a wave. The child weighs 30 kg, and the portion of the wave that hits the child contained 60 kg water. If the wave had a period of 2 seconds and a wavelength of 6 meters, how fast will the child be moving after it is hit by ...

**Physics**

Some stoves use the heat produced by current flowing through a conductor. If the heating element (conductor) has a resistance of 30 ohms, how long will the burner have to work to heat 500 g of 30°C water up to its boiling point? The specific heat of water is 4.19 x 103 J/...

**Geometry **

A sailboat is heading directly north at a speed of 16 knots (1 knot = 0.514 m/s). The wind is blowing towards the east with a speed of 10.4 knots. (Both velocities are given relative to the Earth.) Determine the magnitude and direction of the wind velocity as measured on the ...

**math**

90/36

**math**

what is an equivalent fraction to 10/4 that starts with 90?

**Math**

84/72

**Math**

what is an equivalent fraction for 7/6 that has a numerator of 84

**Math**

1. 2(x-3)=2x A. One solution B. No solutions C. Infinitely many solutions 2. 3(y-3)=2y-9+y A. One solution B. No solutions C. Infinitely many solutions 3. 10x-2-6x=3x-2+x A. One solution B. No solutions C. Infinitely many solutions 4. 4(x+3)+2x=x-8 A. One solution B. No ...

**Math**

Thank you!

**Math**

There were 20 at a round table at dinner, each of whom shook hands with the person on his or her immediate right and left.At the end of dinner, each person got up and shook hands with everybody except the people who sat to his or her immediate right or left at dinner.Find the ...

**Social Studies**

Thanks so much

**Social Studies**

Ok can you give me a couple links to help me?

**Social Studies**

Discuss the social reforms that shaped the nation in the 1800s. What do you think have been the lasting impacts of the Reform Era? How do these reforms influence society today? What do you think were the most important social reforms and why?

**Trig**

From a point A, 30 meters from the base of a building B, the angle of elevationto the top of the building C is 56 degrees. The angle of elevation to the top of flagpole D on top of the building is 60 degrees. Find the length of flagpole CD

**Math**

If you turn the fraction into a decimal, the simplified ratio would be 0.2:1

**Math- HELP!**

If a population of fruit flies doubles every 3 days. What is k, the proportionality constant? How would I solve this problem? What would initial value be?? Thanks!

**math**

gas tank is 1/6 full. after pumping 9 gallons gas it is 5/6 full. how much gas does tank hold? How many gallons were first in the tank?

**Physics**

Consider the Bohr energy expression (Equation 30.13) as it applies to singly ionized helium He+ (Z = 2) and an ionized atom with Z=4 and only a single electron orbiting the nucleus. This expression predicts equal electron energies for these two species for certain values of ...

**Physics**

A hydrogen atom is in the ground state. It absorbs energy and makes a transition to the n = 5 excited state. The atom returns to the ground state by emitting two photons, one in dropping to n = 4 state, and one in further dropping to the ground state. What are the photon ...

**Physics**

Determine the ratio of the relativistic kinetic energy to the nonrelativistic kinetic energy (1/2mv2) when a particle has a speed of (a) 2.60 × 10-3c. and (b) 0.972c

**Math**

Why would you round to nearest 100 rather than nearest 10?

**Math**

8(7-3*9)/8+245

**math**

eight time a number is ten more than three times the number...please show your work

**Math- HELP!**

If f(x)=3x^2 -2x -3, let g(x)=f^-1(x). Find the slope of g(x)=f^-1(x) at the point (5,2). a.) g'(5)=1/10 b.) g'(5)=1/5 c.) g'(5)=1 d.) g'(5)=2 I can't understand how to figure out this problem because I am unable to find a derivative for the function. How ...

**Physics- Help!!**

Thanks!!!!

**Physics- Help!!**

A step-up transformer is used on a 100 V line to increase the potential difference to 1200 V. If the primary has 120 turns, then what is the number of turns in the secondary coil? 1440 turns 1000 turns 100 turns 10 turns Thanks!!!!!

**math**

if veronica took a test and she got 80% on it and she answered them correctly then how many questions were there?

**Physics**

A 67.6 ohms resistor is connected in parallel with a 103.8 ohms resistor. This parallel group is connected in series with a 20.8 ohms resistor. The total combination is connected across a 18.2-V battery. Find a) the current and b) the power dissipated in the 103.8 ohms resistor.

**Math**

The width of a rectangle is 3 units less than the length. If the area is 70 square units, then find the dimensions of the rectangle.

**Physics**

An ocean liner leaves New York City and travels 25.1 degrees north of east for 110km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ships displacement vector in the directions, a) due east and b) due north

**SCIENCE!!**

You were correct.

**SCIENCE!!**

I know it's probably too late, but for anyone else it's D.

**Science!**

Cuz I'm cool. Is right! Thank you I had to review my answers and you helped a lot. Thanks. Also #9 is D.

**Math- HELP!**

Build a table to estimate lim sin(1/x) as x approaches zero. Use multiples of pi. I built a table, but do not understand why this limit does not exist. Please explain! Thank you!!

**Science**

Thank you guys! I got 4/4 100%. I was checking my answers and you guys helped thank you! All your answers are right.

**Math- HELP!**

Graph f(x)= { 4 if (0<x<4) { 5 if (4<(or equal to)x<(or equal to)10) and use the graph to evaluate the lim as x--> 4 of { 4 if (0<x<4) { 5 if (4<(or equal to)x<(or equal to)10) Please help! Thank you!!

**math- HELP!**

@steve yes, I did. I am confused on how to complete this problem.

**math- HELP!**

The Fibonacci sequence was first discovered during a study of rabbits. If newborn rabbits become adults in one month, each pair of adult rabbits produces one pair each month, and no rabbits die, then how many pairs of rabbits would be produced after seven months? How many ...

**Chemistry**

In the complete combustion of C3H8 (propane), how many liters of CO2 are produced from 10 liters of O2?

**Physics- HELP PLEASE!**

Four charges are placed at the four corners of a square of side 15 cm. The charges on the upper left and right corners are +3 µC and -6 µC respectively. The charges on the lower left and right corners are -2.4 µC and -9 µC respectively. The net electric...

**Maths**

Three lights all go on one changes every 5 sec one every 6 sec one every 8 sec when will they all go on together

**Maths**

What is the least common multipulls 5 6 8

**Maths**

Three lights go on together first changes every 5 sec second every 6sec third every 8 sec when is the next time they go on together

**maths**

Three lights go on together one changes every 5 sec one every 6 sec one every 8 sec when will they all go on together

**Precalculus- HELP!**

Which of the following series diverges? a) 5 + 10 + 15 + 20 +... b) 45 + 15 + 5 + 5/3 + ... c) 3/4 + 3/16 + 3/64 +.. d) 1/2 + 1/4 + 1/8 + 1/16 +... Thank you!

**Physics**

What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C? -80 Calories -1440 Calories -4186 Calories -540 Calories Thanks!

**Science**

Where is the figure?

**math- HELP!**

Can you walk me through how to do this, please? Thanks SO much! :)

**math- HELP!**

The value of a particular investment follows a pattern of exponential growth. You invested money in a money market account. The value of your investment t years after your initial investment is given by the exponential growth model A=2600e^0.08t How much was initially invested...

**math- HELP!**

So the answer would be .408 inches/minute?

**math- HELP!**

Calculate the linear speed of a bicycle with 26-inch wheels being pedaled at a rate of 200 revolutions per minute. Express your answer in inches per minute rounded to the nearest whole number. (Hint: The diameter of the wheel is 26 inches.) I got: linear speed=r•w r=13 w=...

**Trigonometry- ??????**

Thanks!

**Trigonometry- ??????**

(The number of times a bicycle tire rotates in a given time period is directly related to the distance traveled in that time period. Consider the following scenarios.) 1. Calculate the angular speed of a bike with 26-inch tires rotating at 200 revolutions per minute. Express ...

**Algebra I**

First divide the entire equation by 2. That gives you the fraction -3-9x/3x+1. Then, divide the top part of the fraction by the bottom part which will give you a final answer of -3.

**Precalculus- HELP!**

The temperature in your house is controlled by a thermostat. The temperatures will vary according to the sinusoidal function: f(x)=7sin(π/12(x-11))+33 where f(x) represents the temperature in degrees Celsius (°C) and x is hours since midnight. What is the temperature ...

**Physics**

The intensity of sound is x W/m2 at a distance of 5 m from the source. What is the intensity of the sound at a distance of 20 m from the source? I am not sure how to do this problem. Thank you for your help!

**Trigonometry- ??????**

Solve the equation for 0≤ x ≤ 180 given tan(x) sin^2(x)=2tan(x) How do I do this? Thank you and Merry Christmas! :)

**Trigonometry- Help!**

After one hour in flight, an airplane is located 200 miles north and 300 miles west of the airport. What is the magnitude of the plane's velocity? Round your answer to the nearest mile per hour. a) 22 miles per hour b) 128 miles per hour c )256 miles per hour d) 361 miles ...

**Algebra worksheet**

@tbh and @Reiny are right! Those are the correct answers.

**Pre Calculus HELP!?**

The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(t)= 10+2.8sin(2pi/365)*(t-1.35). How many hours of daylight are there on the 100th day of the year? Round the ...

**Pre-Calculus HELP!!**

The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(x)=11+2.2sin(2pi/365)t-1.25).How many hours of daylight are there on the twelfth day of the year? Round the ...

**Pre-Calculus HELP!**

Thank you!

**Pre-Calculus HELP!**

Explain how the transformations of the functions f(x)=15sin(x) and f(x)=sin(x)+15 differ. I see that f(x)=sin(x)+15 experiences a vertical shift, but I am not sure about the transformation that f(x)=15sin(x) experiences. Thank you for your help!

**English**

The answer to Question #6 should read: There are many bears here. They can smell well, so please put all your food in the bear box. Question #8: It is for keeping travelers' food safe. Question #9: Tomorrow they're going to go fishing. Question #11: They went to Mirror...

**World History**

I'm trying to find helpful websites that help in answering these specific questions under each main topic. I'm not finding any appropriate sources.

**World History**

1.) INDUSTRIAL REVOLUTION: Why is there such a massive gap in the world today between rich and poor nations? 2.) IMPERIALISM: How does imperialism continue to affect the world we live in? 3.) WORLD WAR I: How did World War I and new scientific advances affect Western culture? ...

**Precalculus**

1.) Use sigma notation to describe the sum of the first ten terms of the arithmetic sequence. 20+18.5+17+15.5+14+12.5+11+9.5+8+6.5 2.)Use sigma notation to describe the sum of the first ten terms of the geometric sequence. (40)+(-10)+(5/2)+(-5/8)+(5/32)+(-5/126)+(5/512)+(-5/...

**Language Arts**

From an hour with Abuelo: which paragraphs represent the exposition in Abuelo's story? paragraphs 8–10 paragraphs 10–12 paragraphs 12–14 paragraphs 14–15 *** (i chose number 4)14-15

**Precalculus**

I have two questions: 1. You want to make an investment in a continuously compounding account earning 18% interest. How many years will it take for your investment to double in value? Round the logarithm value to the nearest thousandth. Round the answer to the nearest year. 2...

**Precalculus**

You want to make an investment in a continuously compounding account over a period of two years. What interest rate is required for your investment to double in that time period? Round the logarithm value and the answer to the nearest tenth.

**Science**

Anon, Fantastic, and FallenAngel are all correct I got 100% 5/5 with their help because I was checking over my answers. Thank you!

**Bubbles**

She just wanted you guys to confirm her answers,not tell her the answers, and you guys are being very rude about it.

**Health class**

---- are nutrients that are needed for growth and repair of the body's tissues. Carbohydrates Fats Fibers Proteins

**Heath class**

Which of the following foods is usually highest in protein? Apple Chicken Bread Candy bar

**physics**

Thank you so much Damon!

**physics**

I need help understanding these, please. Thanks! 1. A 2 kg body moves with constant velocity when a force of 10 N is applied. What is the coefficient of kinetic friction between the table and the body? (Would I use F=m*g for this??) 2. Which of the following statements is ...

**Algebra 1**

The manager of a band recommends that the band sell its CDs for $8.75. The band decides to sell the CD for p dollars. A) Write an absolute value expression that tells how far the bands price is from the recommended price. B) The band wants the price of its CD to be no more ...

**Health, Safety, and Nutrition**

Which if the following is a mandatory standard? (1 point) 1) Food Labels 2) National Health and Safety Standard 3) dietary reference 4) Childmand adult care food program *Havng a hard time finding it in the book

**Calculus**

The Norman window illustrated below has a semicircular section on top of a rectangle. The radius of the semicircle is x. The long side of the rectangle is three times the radius of the semicircle. a)Express the total area of the window, A, as a function of x. b) Express the ...

**P6 maths**

Thank you so much

**P6 maths**

Mrs Raja and Mrs lee have some eggs to sell. If mrs raja sells 30 eggs per day and mrs lee sells 15 eggs per day , mrs lee will still have 610 eggs left when mrs raja has sold all her eggs . If mrs lee sells 30 eggs per day and mrs raja sells 10 eggs per day , mrs lee will ...

**Pre-calculus- URGENT**

Convert the rectangular coordinate (-8,i (square root of 3) into polar coordinates. How do I do this?? I tried every way I knew of to convert the y coordinate (i (square root of three)) to polar form, but it didn't work. I think that the polar form of the x coordinate is ...

**College Algebra**

1. The answer would be m=11. To find this answer, you need to multiply each side of the equation by the LCM (in this case it would be (m+2)(m-3). After doing this, the denominators of both sides will be rationalized, and you will be able to solve for m. Hope this helps! :)

**Pre-calculus**

write the complex number -5 in polar form. I don't get how to do this because arctan of b/a would be 5/0 which is a fraction with no solution. Also, is a zero? Sorry if I'm being confusing! Thank you!

**AP English**

Analyze the validity of the following argument: Sally argues, "Mom, your rules are way too strict! Melissa's mother lets her stay out until 2:00 AM on weekends. Peter's parents let him go to all-night raves even on school nights. Tom's parents don't even ...

**Precalculus**

#1.) Write (1-i)^10 in a+bi form. #2.) Write (1+i)^20 in a+bi form. How do I do these? Thanks!

**Pre-Calculus HELP!**

change the polar equation r=5/1+cos(theta) to rectangular form. How do I do this? Thank you! :)

**Physics-PLEASE HELP**

Btw the answers I gave above are positive values, not negative values. Sorry for any confusion.

**Physics-PLEASE HELP**

A man walks for 5 km/hr for 1 km and 7 km/hr for next 1 km. What is his average speed for the walk of 2 km? -5.8 km/hr -6.0 km/hr -2.0 km/hr -1.0 km/hr Thank you very much!!

**french**

And i also want to ask you.. what is the proper translation of "Do not run" would it be Ne courez pas or ne pas courir. i think it is ne pas courir

**french**

1. When he states at the end of the play before he dies "My panache" 2. When Cyrano picks up the panache of de guiche at battle and im not sure of a third one..

**french**

There is no identity crisis And that's fine

**french**

Three ways Cyrano in the play Cyrano de Bergerac show his panache?

**french**

My question is my opinion on what? about the panache de cyrano?

**Math**

The aswer for this set of questions is 4:D. For the one I had it was B:Sam's.