# Posts by Heather

Total # Posts: 1,134

**math**

Sam invests $8000 in a stock but suffers loss of 5% per month. How many months will it take for Sam to lose a half of the original value?

**Math**

If ann, may, and vea had 1/3, 1/8, and 1/20 chances of winning a competition, what is the probability that only one of them will win? *I don't know if I would just add everything and that would be the amswer, or is there something more?*

**science**

Ammonia, NH3, can be made by reacting nitrogen and hydrogen and the equation is N2 + 3H2 --> 2NH3 How many moles of NH3 can be made if 12 moles of H2 react with enough N2? mol

**science**

At a pressure 43 kPa, the gas in a cylinder has a volume of 11 liters. Assuming temperature remains the same, if the volume of the gas is decreased to 5 liters, what is the new pressure? kPa Im guessing it 58 or 77x10^3

**pre algebra 1**

thank u so much bob!!!!

**pre algebra 1 **

Write a rule for the linear function in the table. x f/x 1 -7 2 -10 3 -13 4 -16 A. f(x) = -1/3x – 4 B. f(x) = 3x + 4 C. f(x) = –3x – 4 D. f(x) = x – 7 have no clue, would like some help

**pre-algebra 1**

he triangles are similar. Find the value of a. bout side of triangle is 16 and 20 and the other triangle is a and 8 A. 10 B. 6 C. 16 D. 12 Im thinking it 12

**pre algebra 1**

thank you so much steve!!!!!

**pre algebra 1**

Sasha finished mowing lawns at 4:15 PM. It took 1^3/4 h to mow the first lawn. The second and third lawns she mowed each took 1^1/5 h. She took one 45-min break. When did Sasha begin mowing the first lawn? A. 10.05 A.M. B. 11:05 A.M. C. 11:21 A.M. D. 12:21 P.M. thinking the ...

**pre-algebra 1**

thank you so much

**pre-algebra 1**

thinking its b.

**pre-algebra 1**

Write 6.92 x 10 -8 in standard notation. A. 0.000000692 B. 0.0000000692 C. 0.0000000069 D. 0.00000692 Please help, i have no clue!!!

**pre-algebra**

no, it would be C.

**pre-algebra **

Justin wants to use 376 ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should he use? What will be the area of the garden? A. 89 x 99; 8811 ft B. 92 x 96; 8832 ft C. 94 x 94; 8836 ft D. 93 x 95; 8835 ft thinking the answer is d...

**health**

it was correct, thank you

**health**

Americans spend almost _______ percent of their food budget on foods prepared away from home. A. 20 B. 30 C. 40 D. 50 Thinking it would be B.

**english**

thank u

**english**

The suffix -est means: A. more B. most C. alot D. many Thinking the answer b.

**vocabulary**

thank u so much, for your help.

**vocabulary**

A poem that is told in an actual manner. A. Lyrics B. Ballad C. Sonnet D. Genre Thinking its B, am i correct

**Inverse Functions**

A surveyor is standing 550 feet from the base of a redwood tree in the California Redwood Forest. The tree is 362 feet tall. Sketch a drawing that models the situation and then find the angle of elevation of the top of the tree from the spot where the surveyor is standing.

**Math **

You want to have $60,000 college fund in 12 years. How much will you have to deposit now under the scenario below. Assume that you make no deposits into the account after the initial deposit. An APR of 8?% compounded daily. I know how to break the problem down, but I am not ...

**Math**

The sun hits a flagpole that is 180 feet tall. The shadow that is cast is 215 feet. What is the angle of depression?

**chemistry(buffer solutions)**

Calculate the pH of the buffer solution that would be ormed by mixing 500cm3 of 0.1mol/dm3(aq)ammonia with 500cm3 off 0.1mol/dm3(aq)ammonia chloride.

**3rd grade math**

Johns ate 3/8 of a pizza how much was left?

**Algebra**

There are 6 cyclists in a race. There will be a first-place and a second-place prize awarded. In how many different ways can the 2 prizes be awarded?

**calculus**

Find the points on the graph y = -x^3 + 6x^2 at which the tangent line is horizontal. I found -x^2 + 4 = 0 are the points [4,32]

**Mathematics **

A sheet metal fabricator makes boxes from sheets of steel. Each sheet of steel has an area of 1500 cm^2. 6 cm squares are cut from each corner and the edges are bent up to form a box with a volume of 3456 cm^2. What are the dimensions of each box?

**calculus**

limx--->3- 5/x-3 I think it is -inf but I don't know how to prove it

**calculus**

if limit x--->0(4-g(x)/x)=1

**AP Chemistry Help!!**

When you light a candle, the paraffin wax soon begins to melt. Paraffin wax is a covalent compound. Can you classify the melting of the wax as a chemical change or a physical change? If so, which is it? If you cannot classify it as chemical or physical, explain why not. ...

**Social Studies**

The free-soil party was a persecutor to which political party? A. Know Nothing Party B. Whig Party C. Republican Party •• D. Copperhead Party

**algebra**

Ashley is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A charges $95 and allows unlimited mileage. Company B has an initial fee of $75 and charges an additional $0.80 for every mile driven. For what...

**Spanish**

Could you please help proofread my paragraph for grammar and explain any issues thanks. An elementary bilingual teacher asks you to come to her class to talk to her students about how you used to celebrate the holidays with your family. First you want your Spanish teacher to ...

**physics**

What is true about microscopic properties of an object? 1) They are just small versions of the macroscopic properties. 2) They are the properties of particles that make up the object. 3) They are the average of many properties of individual particles. 4) They are overall large...

**physics**

Robin is standing terrified at the end of a diving board, which is high above the water. If Robin has a mass of 56 kg and is standing 1.5 m from the board's pivot point, what torque is Robin exerting on the board?

**special education**

Which children (not just gender) with ADHD are least likely to be identified as having it?

**geometry**

What are the lengths of the legs of a right triangle in which one acute angle measures 19° and the hypotenuse is 15 units long?

**FRENCH**

This is a poem I wrote called Automne. Are there any mistakes? Adieu, vive clarté de nos étés trop courts Au claire de l’automne Le bel automne est revenu Un parfum de mélancolie émouvante On sent tout le temps, en l’automne Nous ...

**French**

Yes.. but it's not exactly like the english way in which you'd read it.

**French**

This is a poem. I did include alliteration, imagery, metaphor or simile to add some fig. language. Can you fix any mistakes I have. Btw, this is a poem written from Cyrano's perspective to Roxane. (common french book :) 1. Oh mon amour, ma belle Roxane. 2. Sur mon cahier 3...

**English**

The essay question we had to do is to research the effects of loneliness and rejection and use references from the novel Frankenstein. How can I make my thesis or the concluding sentence of my introduction sound different from my classmates but at the same time, answer the ...

**English**

At this point he did not care if he had wronged others because he has been wronged by many of whom he thought he was close to. How can I reword this without using so many "he"? I used it five times & i'm not sure how to reword everything to make it make sense.

**Physics**

A soccer ball accelerates from rest and rolls 6.5 m down a hill in 3.1 s. It then bumps into a tree. What is the speed of the ball just before it hits the tree? A formula to answer this question would be fine; you don't have to solve the whole thing.

**4th grade math**

Write two 5-digit addends whose sum would give an estimate of 60,000

**Confidentiality and Allied Health**

When should information be entered into a medical record? A at the time the event occurs b at the time set aside at the end of the shift c while the physician is making rounds d when the patient is discharged from the hospital I think its a

**Maths**

Buzz is three times as heavy as Jessie. If Buzz is 450g heavier than Jessie what is the weight of Buzz in grams?

**Math**

Mrs. Cord's class , 11 children Owens pets. There are 23 children in the class. What is the ratio of pets owners to the whole class?

**Vocabulary**

Merciful and Relentless A. Synonyms B. Antonyms C. Neither

**Chem Please HELP**

A 15.0mL sample of an H2SO4 solution is titrated with 24.0 mL of a 0.245 Molarity NaOH solution. What is the molarity of the H2SO4 solution?

**Math**

The difference between two numbers is 6. Their product is 2,016. What are the two numbers.

**Shakespeare**

I just need help coming up with a thesis for a paper. We are writing about the different types of love portrayed in A Midsummer Night's Dream....Forced, romantic, and frienship love. Any help with a thesis for a two page paper on the different types of love portrayed?

**jmh**

its b

**Math**

Let d(n) represent the number of diagonals of a polygon of n sides. Here is a table of values of d(n). n 3 4 5 6 7 8 9 10 11 d(n)0 2 5 9 14 20 27 35 44 Find a polynomial formula for d(n) in terms of n

**Physics**

In the figure, the two blocks are attached by a massless rope over a frictionless pulley, and block M1 slides on the table without friction. The masses of the blocks are: M1 = 8.10kg and M2 = 3.90kg. Calculate the tension in the rope. ( g = 9.80 m/s2)

**physics 2 HELP PLEASE!!**

Can someone help break this down.. Please tell me if what I identified is so far correct. Also what equations should I use??? x1= 10m x2=? v1= 1.2 m/s v2=? a= -9.8 m/s^2 t= ? 1.) a diver runs horizontally with a speed of 1.2 m/s off a platform that is 10.0 meters above the ...

**Physics**

Consider a plane with a velocity relative to the air of 195 m/s in a westerly direction. If the wind has a speed relative to the ground of 53 m/s (in an easterly direction), how long does it take for the plane to travel from one city to another that is due west of the first by...

**Algebra**

B=(1/4)m(q+k) Solve for q

**Chemistry**

Using calculations, determine how you would make a 525 ml pg a 0.50 M solution of Cl- ions using CaCl2. I am unsure how to do this question, I was going to use C1V1=C2V2 but with this I would be missing the first part of the equation. If that is the case, would I assume the ...

**Language Arts**

Thanks Ms. Sue!

**Language Arts**

Hmmm, no, I'm weighing in more with b.

**Language Arts**

Yeah, I know, it seems like an idiotic question... so sorry.

**Language Arts**

Choose the meaning that matches the word in quotation marks. Before the debate began, the speaker's heart "fluttered" with nervous anticipation, and he breathed deeply to steady his nerves. a. flapped quickly b. beat rapidly c. waved steadily d. moved nervously I...

**math**

Ronnie is thinking of a number. He says that he gets the same result when he multiplies his number by 2 as when he adds 5 to his number. What is the number?

**math**

8:9:18 8 = 184 what's 9 and 18?

**chem 130**

what mass of sodium hydroxide will be required to neutralize completely 1.60x10^23 molecules of HCl?

**mATH**

59

**physics**

Three people attempt to hold a heavy sign in place. Abby pulls directly upwards (in the middle) with 140 N of force. Joe is ob Abby's left and pulls at a 30.0° to Abby's rope with a force of 180 N. Henry is on Abby's right and pulls at a 30.0° to Abby's...

**science**

urgent

**science**

what are some family characteristics for Halogens

**Chemistry**

The question says: A sample of helium is collected by displacing 182 mL of water. The pressures of the gas and the atmosphere are equalized, using the method described in this experiment. The atmospheric pressure is 738 mmHg. The temperature of the water and that of the gas ...

**Chemistry**

arrange CO2, N2O2, CaO, SiO2, and Ga2O3 in order of increasing acidity

**Math Calculus**

Postal regulations specify that a package sent by certain shipping methods may have a combined length and girth of no more than 99 inches. Find the dimensions of a CYLINDRICAL package with the greatest volume that may be sent by this shipping method. HINT* the length plus the ...

**math**

(6.0 x 10^5) x (3.0 x 10^4)= A. 18 x 10^20 B. 18 x 10^9 C. 1.8 x 10^20 D. 1.8 x 10^10 2. (5 x 10^-2) divided by (2 x 10^3) = A. 2.5 x 10^-5 B. 2.5 x 10^-1 C. 25 x 10^1 D. 25 x 10^2 3. (2.56 x 10^6) times (3.56 x 10^2)= A. 9.1136 x 10^12 B. 91.138 x 10^8 C. 9.1136 x 10^8 D. 91....

**english**

compound

**Chemistry**

Lets say you have 25 ml of a 3.25M copper(II) chlorate solution. How many moles of copper (II) chlorate would be in the solution and how many moles of the copper(II) ion would be in the solution?

**Precalculus**

A vehicle has an engine that is connected directly to a gear box. In the highest gear, a 2 inch radius gear is turning a 14 inch diameter gear. This gear is connected to the drive shaft. The drive shaft attaches to a wheel and a tire that measures 2 and 1/3 feet in diameter. ...

**physics**

Two students are on a balcony 21.4 m above the street. One student throws a ball ver- tically downward at 15.6 m/s. At the same instant, the other student throws a ball verti- cally upward at the same speed. The second ball just misses the balcony on the way down. What is the ...

**geometry**

so its 1.2?

**geometry**

Point Y lies on segment XZ. If XY = 2.8 and XZ = 4.0, what is the length of segment YZ?

**Physics**

A car starts from rest and travels for 5.0 s with a steady acceleration of magnitude 1.5 m/s2. the driver then applies the brakes for 3.0 seconds causing a steady deceleration of magnitude 2.0 m/s2. How fast is the car going at the end of the breaking period?

**algebra**

george drove to two town at 60 miles per hour and drove back home at 30 miles per hour. what is the distance to town if the whole trip took 9 hours hrs

**alg**

george drove to two town at 60 miles per hour and drove back home at 30 miles per hour. what is the distance to town if the whole trip took 9 hours hrs

**Geo**

Which of the following is not a valid reason in a mathematical proof?

**Precalc**

Find a rectangular equation for the plane curve defined by the parametric equations. x = sin(theta) y = 3cos(theta)

**IT**

Why can you not install the server migration tools to the server running windows server 2008 R2 using the add roles and features wizard on your server running windows server 2012 R2?

**IT**

Why can you not install the server migration tools to the server running windows server 2008 R2 using the add roles and features wizard on your server running windows server 2012 R2

**mathmatics**

that would be 70

**mathmatics**

how would you estimate?

**mathmatics**

A jacket costs $94.95. It is on sale for 30% off. Estimate the sale price.

**math**

is it 66.46?

**Math**

What is “a, b and c” in this hyperbola? (y-2)^2/5-(x-3)^2/6=1

**Math**

What is “a, b and c” in this ellipse? x^2/9+y^2/4=1

**Algebra**

bicyclist rides 30 miles against a wind and returns 30 miles with the wind. his average speed for the return trip is 5mph faster. how fast did the cyclist ride against the wind if the total time of the trip was 5 hours

**Calc/Precalc**

Thanks so much. Could you help me with 2 & 3?

**Calc/Precalc**

Find the derivatives of 1. ln[(2x^3⋅2e^x)] 2. xy = cot(xy) 3. y = cos(x^3 + 27) I don't really know where to start with these. The answer is (3+x)/(x) for the first, y/-x for the second, and 35. -3x^2 sin(x^3 + 27) but I have no idea how they got there. Thank you!

**Chemistry help**

1. Find the pH when there are 0.034 moles of h+ in a liter of solution 2. Find the pH when there are 1.6x10^-7 moles of h+ in 500 ml of solution Please help me on these only problems im struggling with, thank you!

**Dance**

Cute drill team squad names that start with H? I need help!

**ALGEBRA**

A service that repairs TV's and sell maintenance agreement for $9 a yr. the average cost for repairing a TV is $39 and 3 in every 100 people who purchased maintenance agreements have TV that require repair Find the services expected profit per maintenance agreement

**Chemistry**

What is the molality of a solution of aluminum nitrate that contains 77.0 g of Al(NO3)3 dissolved in 120.0 g of water? Use molar masses with at least as many significant figures as the data given.