# Posts by Brooke

Total # Posts: 735

**algebra**

decide whether each trinomial is a perfect square. if so, factor it. x^2 - 4x + 4 how do i solve this?? i don't understand the method..

**algebra**

ok, thank you

**algebra**

write each square as a trinomial: (-11t^2 - 2)^2 (22t^4 + 44 + 4) <- is this answer correct?

**Chemistry**

How much energy, in calories, will be required to evaporate 125.0 mL of ethanol at its boiling point? Given: Density 0.818 g/mL Boiling Point 78.5 C Heat of Vaporization 210 cal/g Any help is appreciated!

**Chemistry**

what number should be placed in the blank to balance the equation C 3 H 8 + 50 2 --> 3 CO 2 ___ H 2 O I have been working on this Q for four hours and it is driving me CRAZY please HELP i hate chemistry or anything with numbers in it as a matter of fact.

**language infinitives**

it is used as a noun,an adjective,and also and adverb.

**Calculus**

assuming that you wish to have $19000 in 7 years and that the account earns 6% compounded continuously. Round your answer to the nearest cent. Answer:

**Calculus**

Company QRS generated a net profit between 1992 and 1997 at a rate approximated by 20 t + 264.5 million dollars per year, where t is the time in years since 1992. Find the value, in 1992, of QRS's net profit over the 5-year period from 1992 to 1997. Assume that the ...

**Calculus**

Redo problem 8 in section 6.3 of your textbook (page 288) assuming that the parents need $105000 in 9 years for college expenses, and that the bank account earns 9.25% compounded continuously. Round your answers to the nearest cent. (You may need to compute your answers to 4 ...

**Algebra: Simple Interest**

(5000 - x).12 + x(.10) = 568 (5000).12 - (x).12 + x(.10) = 568 600 - .12x + .1x = 568 subtract 600 from both sides -.12x + .1x = -32 -.02x = -32 divide both sides by -.02 x = 1600 3400 at 12% and 1600 at 10%

**Physics**

A 50-kg block is at rest on a 15 degree slope. A force of 250 N is acting on the block up the slope parallel to it. If the block does not slide up the slope, what is the minimum value of the coefficient of static friction between the block and the slope?

**accounting**

(cost - salvage)/life = annual depreciation (1000 = 50)/5 = 190 Book value - # years depreciated x annual depreciation = book value 1000 - 2(190) = 620

**Algebra**

Similar are proportional. 12 is to a as 3c is to c cross product 12c = 3ac divide both sides by 3c and a = 4

**math**

whats 5 to the seventh power and whats 5 to the third power

**math**

Mrs.rushford began to hike at an elevation of negative 40 feet. her elevation decreased by 90 feet in one hour what was Ms.rushford elevation after 1 hour

**Chemistry**

DrBob222, why don't you just post the damn answer?

**Math**

Ferroza can buy a 24 ounce bag of ferret food for 1.19 or she can buy a 36 ounce bag for 2.89. which is the better deal?

**math**

(3 3/4) + (2 1/4) = 6

**Math**

How do you find the area of a semicircle

**math**

a tree casts a 12 f shadow at the same time a 10ft flagpol case a 20ft shadow how tall is the tree

**Chemistry**

How much hydrogen and oxygen must react to produce 65.00 grams of water? 2H + O2 -> 2H2O

**math**

what is the relationship between sin of thata and cos of thata at every ten degrees?

**physics**

A man is pulling on a rope with a force of 65 N directed at an angle of 26◦ to the horizontal. What is the x-component of this force? Answer in units of N.

**social studies**

What is another name for the peninsula nicknamed The Northern Neck?

**Law and ethics in allied health**

Licensing laws allow states to

**Geometry**

Which is the hypotenuse-leg theorem? A. If the hypotenuse and one leg of a right triangle are similar to the corresponding parts of another right triangle, then the triangles are congruent. B. If the hypotenuse is congruent to the corresponding part of another right triangle, ...

**9th grade ENG**

in her room at the prow of the house where light breaks and the windows are tossed with linden. my daughter is writing a story i pause in the stairwell , hearing from her shut door a commotion of typewriter- keys like a chain hauled over a gunwale. young as she is, the stuff ...

**algebra**

is the average of 27 - x, x - 8, and 3x + 11 is y, what is the average of 2y and 2y/3?

**Science**

I have to compare and contrast the difference between a service current and a wave.

**5th grade**

I am doing a history project on ancient rome was wondering if anyone knows where I can Ancient Rome natural resouces and how they were used. I don't know if I'm looking it up right all I seem to find is that they planted olives. Thanks

**statistics**

The question is: A data set consists of a set of numerical values. Which, if any, of the following statements could be correct? a. there is no mode b. there are two modes c. there are three modes I answered a. there is no mode.

**statistics**

a data set consists of a set of numerical values. which of the following is correct? a. there is no mode b. there are 2 modes c. there are 3 modes I answered a there is no mode is this correct?

**statistics**

indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. the 29th percentile is greater than the 30th percentile. b. the median is greater than the quartile c. the third quartile is greater than the first quartile d. ...

**Chemistry**

What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees Celsius?

**chemistry**

Why can you smell a cake baking in the kitchen when you are in your bedroom?

**literature**

The major theme of "life Without Principle" is

**literature**

What does Seattle say about integrating white and Native American cultures?

**statistics**

In a gallup poll of 1,038 adults, 540 said that second hand smoke is very harmful. What is the percentage of adults who said second hand smoke is very harmful? Is the answer 52%

**statistics**

the first class in a relative frequency table 50-59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

**algebra honers (math)**

what happened to the peanut who went walking late at night

**literature**

When does the Narrative of Sojourner Truth take place

**chemistry**

If you start with 1.00 g NaCl and an excess of the other reactants, how many grams of Cl2 will be produced?

**trig**

fridge temp equation: T(x)=3sin(pi/10x)+36 What are the high and low temps that will occur in the fridge after its been chilled to 36 degrees? How many mins between these temps? What is the period length?

**spanish**

i have to write a sentence using tocar. is this correct a mis padres les toca arreglar la sala.

**math**

how to do ratio in simplest from example 5km to 5m

**3rd grade book report**

So what I'm a third grader I have gotten straight a my hole life what about u:)

**spanish**

what does this say in english: Que usa la abuela?

**english**

afle-feicrlk what is this football phrase unscrambled?

**english**

what is this football phrase unscrambled iocfnf cernro?

**English**

Football phrases: Can someone help me please? sdnieo ikkc, iocfnf cernro, afle-feirlk, awrd aypl, and udrnao. Can someone help me unscramble these words they are football phrases

**Math**

i think the answer is $480

**English**

Football phrases: can you help me unscramble these? sdnieo ikkc, iocfnf cernro cernro, afle-dne, adwr aypl, and nde udrnao

**Biology**

Name three characteristics of mitochondria and chloroplasts that support the endosymbiotic hypothesis of eukaryotic evolution?

**Biology**

Explain how early RNA molecules might have been able to respond to natural selection?

**Biology**

Why was the discovery of microspheres and coacervates an important contribution to the understanding of how life might have originated on Earth?

**Biology**

Why do some scientist think that areas protected from the atmosphere might have favored the production of organic compounds on early life?

**Biology**

Explain how the half-life of a radioactive isotope affects the usefulness of that isotpe in dating specific types of rock?

**Algebra**

The sum of two mumbers is 21, and their difference is 7. What are the numbers?

**algebra**

Jims Brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myrons Auto charges $40 for parts and $30 per hour to do the same job. What length of job in hours would have the same cost on both shapes?

**Algebra**

Jim's Brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myron's Auto charges $40 for parts and $30 per hour to do the same job. What length of job in hours would have the same cost on both shops?

**Algebra**

Solve y=1/4x-1 if the domian is (-4, -2, 0, 2, 4) Please help me answer thank you for in advanced!

**Algebra**

How would you solve this problem: Slove y=1/4-1 if the domain is(-4,-2,0,2,4) Could someone please explain to me how to do this? Thank You in advance for your help!

**Biology**

9) A molecule shaped like a spiral staircase is typical of A. deoxyribonucleic acid. And I think number 14 is C but im not for sure.

**Algebra**

Tickets to a movie cost $7.25 for adults and $5.50 for students. A group of friends purchased 8 tickets for $52.75. How many adult tickets and student tickets were purchased?

**algebra**

The length of Sally's garden is 4 meters greater than 3 times the width. The perimeter of her garden is 72 meters. What are the dimensions of Sallly's garden?

**English**

What is an example of a personification?

**english**

What is an example of a metaphore?

**english**

Can some one give me an example of a metaphore? And explain what a metaphore is. Also can someone give me an example of a personification? PLEASE? thatnk you in advanced for your help!!!

**english**

Is this sentence a personification? Buddy enters many contests but knows that his cousin's friendship is his real fortune.

**spanish**

what does Cuando es la fiesta de Arturo mean? and how do you answer it in a complete sentence.

**biology**

__________________ charcters show many degrees of variation because they result from the additive effects of several ____________. Many human conditions are complex because they are influenced both by ___________ and by ___________. If two genes cross oveer 35 percent of the ...

**algebra**

Four pears and two apples cost $1.96. Three apples and three pears cost $2.10. Find the cost of 1 apple and 1 pear.

**algebra**

A 30ft. cable is cut into 2 pieces. One piece is twice as long as the other piece. Find th length of each piece of the cable.

**algebra**

The charge for admission into the concert is $2.75 for adults and $1.50 for childeren. If 589 people paid to get into the concert and $1151 was collected, find the number of adults and the number of childeren who paid for tickets.

**algebra**

If Kurt were 10 years old, he would be twise as old as his sister, and their combine ages would be 36. How old are Kurt and his sister?

**algebra**

a cable is cut into 2 pieces. One piece is twice as long as the other piece. Find the length of each piece of cable

**Chemistry**

magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. What is the pecentage yield of 10.1g Mg reacts with an excess of water abnd 21.0g Mg 9g (OH)2 is recovered? If 24g Mg is used the percentage yield is 95% how many gramns of magnesium hydroxide ...

**organic chemistry**

Two students are running C-13 nmr, one student has pare-xylene and the other has meta-xylene. Explain how they will be able to distinguish the two spectra.

**algebra**

by multiplying/dividing by a negative number, you are distributing that negative to every part of the equation, making everything effected by the negative opposite. In order to make an inequality sign opposite, you must flip it. with equations you still must multiply/divide ...

**Science**

to live don't you need water to suvive because if you do not have water you could die of dehidration

**spanish**

after classes i like

**Health**

How do you think what you eat affects your body and the way you feel?

**Spelling**

Can anyone help I need to put the words complimentary,often and complementary into one sentence does anyone have any ideas. Please and Thanks

**math**

Write each ratio as a fraction in simplest form : 11 1/3 out of 50 2/3, 5 1/4 out of 20 3/4, 28 1/2 : 30 1/4

**I dont understand**

everytime I try to ask for hwlp my teacher goes and helps other st8dents when I am tryin to ask him for help on a problem. How do I solve the system of equation? x+y=1 2x-y=5

**11th grade**

can you please evaluate these expressions if x=5 y=3.5 and w= -3 1.|2x-15| 2.|-2y=8|-9 3.|w-x|-|10y-w|

**Ms. Sue**

The topic is about what aspires me. What I want to do in the future. Well I want to be a veterinarian. But I am not allowed to use I, me, myself,you, yourself, or overusing words.

**Ms. Sue**

I am writing a formal essay for a contest to win a scholarship.But it has to be written formally.

**writing a formal essay**

Hoe can I avoid using "I", "Me", "myself", or "it is"?

**miswrote the last question**

(5,1) m = 2/3

**Intermediate algebra**

(5,) m=2/3 how do I solve this using slope intercept?

**Chemistry**

How would you calculate the number of atoms for 1.004 mol bismuth

**Ecology**

CORRECTED QUESTION >>> >>> >>> >>> A space can hold a maximum of 256 paramecia before over-crowding. The paramecium undergoes 8 cell divisions before over-crowding. Suppose that the paramecium takes 2 hours to divide *once, how many hours ...

**Ecology**

A space can hold a maximum of 256 paramecia before over-crowding. The paramecium undergoes 8 cell divisions before over-crowding. Suppose that the paramecium takes 2 hours to divide one, how many hours will it take the paramecium to reach maximum capacity?

**5th grade**

So is the pattern rule going up by 1.25 on each... Does sound right.

**5th grade**

Dreamy Ice-cream Company sells a single-scoop sundae for $1.25. Each additional scoop costs $1.25. There is a fixed price for 0.50cents for extra topping on all sundaes. I am supposed to make a table to show the prices of the first 4 sizes of sundaes with extra toppings. Can ...

**social studies**

Why is the spring season so wet?

**English**

depending on how it is said if ur mom for example says: remember, school comes first so no parties ?? so i'm really not sure english is such a difficult lauguge

**music/drumkit**

the first rhythm you learn to play on drumkit

**social studies**

who is known as the father of medicine