# Posts by serena

Total # Posts: 271

**Math**

A 12-foot ladder is set up 5 feet from the base of a building. How far up the building does the ladder reach? Round your answer to the nearest tenth of a foot.

**calc**

If z = 2cis 60°, find z^4 in rectangular form.

**Math**

thanks people

**math**

Yes, you are right. Use distribution and multiply each number in the parenthesis aka the "10x" and "-12" by -3. So it would be 10x(times -3) - 12(times -3) -30x - -36 -30x + 36 Thats your answer. Hope this helps! Serena, a 10th grade student

**Math**

1. So you know that the slope intercept form is y=mx+b, right. And m is the slope. So in this case there is no straight out coefficient, but x is also equal to 1x. Therefore one is your slope. 2. So first bring -6 to the opposite side of the equation by adding 6 to each side. ...

**Chemistry**

Do pipettes blow up like balloons when they are heated. Why or why not?

**Chemistry**

Oh sorry. The actual question is... Explain what happens at the molecular level for something to dissolve.

**Chemistry**

How could 2 molecular compounds react to create a precipitate and an aqueous solution?

**Math**

If you are describing a graph that consists of a parabola and a line that intersect at two points, would the system be dependent and consistent. Or is dependent only used if the system has an infinite amount of solutions? Thanks!

**Essay Title**

Hi. I need help thinking of a title for the essay I am writing. The essay is about the Dominican Republic and Trujillo's regime. Specifically I am talking about how women who accept/deny female stereotypes accept/deny male domination. Can someone help me thing of a title. ...

**college essay**

Here's another one for editing papers. Your paper was well-written btw. Hope you make it in! I can't paste the link in so if you go to Paper Rater's website, that could help.

**Math**

So substitute one of the x values in x. For example, substitute -3 for x f(x)=-(-3)+4 f(x)=3+4 f(x)=7 Therefore one of the values for y is 7. Do that for the rest of the x values and you will get the answers. Hope this helps!

**math**

So first what you want to do it two put the numbers in order from least to greatest. 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 7, 16 So to find the mode you want to see which number is listed the most. That would be 4. To find the median you want to find the middle number of this ...

**Magic Thesis Statement**

I am trying to argue that most weak women in the Dominican Republic during Trujillo's obeyed male domination. While the strong women would manipulate gender context to get what they want or to defy the power hierarchy.

**Magic Thesis Statement**

Hi! I'm writing an essay about how women act according to male or female domination. Could you please look at my magic thesis and tell me if my why is well written. Thanks! By examining the gender context during Trujillo's regime, one can see that some women who are ...

**Math help please**

Well for this problem what you would do is you would take each set of ordered pairs and substitute the x coordinate for x and the y coordinate for y. If for all 5 ordered pairs a function works, then that is your answer. For example take the first one. With the set of ...

**Algebra 2 @ Steve**

Ok. I get it. Thanks for your help.

**Algebra 2 @ Steve**

I have another question regarding functions, but instead if you are adding up functions that are in a radical. f(x) and g(x) are both square root of x+5. To find the domain of f+g, f-g, fg, and f/g, would I find the domain of each function...[-5,infinity)? And then what? How ...

**Algebra 2**

I am doing a similar problem where f(x) and g(x) are both square root of x+5. To find the domain of f+g and all that would I find the domain of each function...[-5,infinity). And then what? How would I add each set up?

**Algebra 2**

Ok, that makes sense. Thank you!

**Algebra 2**

So for any set of polynomials that are not in a radical, the domain will usually be all real?

**Algebra 2**

f(x) = x^2 + 2 g(x) = 2x^2 - 1 Find the domain of f+g, f-g, fg, and f/g Can someone please explain to me how you would do this problem?

**maths**

So for a triangle, two sides have to be greater than the largest side. Therefore, if you have three sides 7, 15, and x, you could say that... a) x is the largest b) 15 is the largest. a) If x is the largest side then 7+15 has to be greater than x. 22 has to be greater than x. ...

**math**

yup, they are all right. Good job.

**math**

9000

**math**

10,000

**Math**

No problem

**Math**

4x + 49 < 9 - x 5x + 49 < 9 5x < -40 x < -8

**Algebra 1**

No problem

**Algebra 2**

I understand how you get x to be -2, but I still don't get how y became 4

**Algebra 2**

If the point P is on the graph of a function f, find the corresponding point on the graph of a given function. P (0,5) y = f ( x + 2 ) - 1

**Chemistry - is this correct?**

Your electron configuration is right. b) Yes, there are 8 electrons in the highest energy sublevel. c) For part c I think it would be 10 because when you look at the last orbit, it includes both s-block and d-blocks. So when you include the electrons from 4s^2 and 3d^8, there ...

**Algebra 2**

Oh I get it!! Thanks.

**Algebra 2**

Can you please explain how to set up the equation? A city council is proposing a new skyline ordinance. It would require the setback S for any building from the residence to be a minimum of 100 feet, plus an additional 6 feet for each foot of height above 25 feet. Find a ...

**arithmetic**

.45

**language**

gerund i think because the suffix -ing is a gerund

**English**

So if I changed it to... The hero displayed gallantry when he saved the woman. Is that better?

**English**

Can you please tell me if I use this word correctly? Gallantry: The hero was ready for the gallantry that came with saving the woman.

**Turabian Citation**

For citing using the Turabian or Chicago format, do you have to put a subscript and a footnote at the end of every sentence? If not, if you have two sentences that belong to the same source, would you put the footnote at the end of the second sentence like in-text citation?

**Chemistry**

Oh ok. That makes sense. Thank you!

**Chemistry**

When electrons get excited can they only move up one level or can they go up multiple orbitals, but just one at a time.

**Simple English**

Can you please rephrase this into words that are easier to understand? How might the scope of his criticism have been limited by his choice of forum? Thanks :)

**Algebra**

An asthma medicine is to be prepared from an elixir with a drug concentration of 5 mg/mL and a cherry flavored syrup that is to be added to hide the taste of the drug. How much of each must be used to prepare 100 mL of solution with a drug concentration of 2 mg/mL?

**Chemistry**

I have all that information, but I still don't understand how to do it. How would you find the constant. And what does the s^ -1 stand for?

**Algebra**

An asthma medicine is to be prepared from an elixir with a drug concentration of 5 mg/mL and a cherry flavored syrup that is to be added to hide the taste of the drug. How much of each must be used to prepare 100 mL of solution with a drug concentration of 2 mg/mL?

**Algebra**

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as one-third of the final grade, what score must the student receive in order to have a final average of 76 percent? Thanks!!

**Essay title**

That's perfect!!! Thank you so much!!

**Essay title**

I really like the second one, but do you have any ideas to get rid of the first person?

**Essay title**

Hi. I'm trying to think of an essay title for an "I believe" essay. The essay is supposed to talk about how I defy the 'single story'. I talked about defying the single story of a teenage girl because I play the drums. My "I believe" statement ...

**AP Euro**

In The Revival of Antiquity by Jacob Burckhardt, Burckhardt talks about the humanists "It's active representatives became influential because they knew what the ancients knew." Please explain this quote and what Burckhardt meant.

**Algebra**

Can you please show step-by-step how to do this problem? (4x^2 - x +5)/ (x^2/3)

**Math**

(4x^2 - x +5)/ (x^2/3) Can you please show step-by-step how to do this problem?

**AP Euro**

Can you please explain this quote said by Pope Boniface VIII in the Unam Sanctum and who he was referring to? Was the Pope referring to Philip the Fair when he said this? "Therefore, of the one and only Church there is one body and one head, not two heads like a monster...

**Spanish**

How would you say iPod in Spanish? Would you simply say iPod or would it be better to use electronic device?

**MATH**

So for this you would use the Pythagorean Theorm. The formula is a^2 + b^2 = c^2, where c is the hypotenuse of the triangle. So if you know that the ladder reaches the height of 12m, that would be the hypotenuse in the triangle. 5m would be one of the legs in the triangle. ...

**Math**

Oh. I understand. That makes a lot of sense. Thanks!!

**Math**

What is the factorization of... p^3 - 2p^2 -9p + 18?

**Chemistry**

Why does a pound of feathers float, but a pound of lead sink? Is it because of how dense each group is?

**Algebra**

That's alright then. Thank you very much.

**Algebra**

Well for the first one, the answer s supposed to be 1ã6xy/2y^2. The second problem's answer is xy/3 times the cubed root of 6y

**Algebra**

No. These two are both separate problems. The book asks to simplify each problem. And for the 2nd problem the index is a four.

**Algebra**

The squiggly A was originally a radical sign, but I guess it got changed.

**Algebra**

Hi. I need help on a couple of algebra problems. Can you please explain step by step how to do these? Thanks. ã(3x (whole thing has radical sign) ---- 2y^3 ^3(ã2x^4y^4) ------------ (the whole thing is cubed 9x

**Grammar**

Which sentence is grammatically correct? Most of the European population was peasants. or Most of the European population were peasants. Thanks!!!

**History**

Oh, ok. Thanks!

**History**

"He simply argued that the peddling of pardons like Colosseum souvenirs trivialized sin by debasing the contrition." Does this mean that by the Pope allowing indulgences society cares less about doing wrong?

**European History**

Ok. Thank you both!

**European History**

Can you please explain this quote? "The monarchy of Rome, as it is now, is a pestilence to Christendom." -Erasmus

**European History**

Oh. Ok. Sorry, I didn't check my previous question. Thank you!

**European History**

Where was this quote said, what impact did it have on society, and what changes were taking place when this quote was said. “I have the feeling that the days of Cicero and Demosthenes are much closer to me than the sixty years just passed.” -Leonardo Bruni

**European History**

Where was this quote said, what impact did it have on society, and what changes were taking place when this quote was said. “I have the feeling that the days of Cicero and Demosthenes are much closer to me than the sixty years just passed.” -Leonardo Bruni

**Business Statistics**

Describe the district ution of the x-bars that you see in part b (shape of distribution, center, and the amount of depersion).

**English**

I think you are right. The answer is metallic

**math**

So you would have to use sin, cosine, tangent. The formula would be 30 sin(x) = -------- 235

**Cross-Multiply**

9. Explain the process of cross-multiplication.

**math**

Bob has three sacks of apples and three more apples in his pocket. Each sack contains the same number of apples. Altogether, Bob has 33 apples. How many apples are in each sack? what is the domain and range

**math**

If you make everything have the same denominator, then Joel would have walked 8/20 of a mile to the store, 6/20 of a mile to the library, and 1/20 of a mile to the post office. When you add them up, Joel walked 15/20 of a mile or 3/4

**English**

This is my sentence... When a single subject is being connected to a plural subject using “or” then the verb is plural. Would you put a comma inside the quotes of the word "or" or outside? Thanks!

**Science**

thanks

**Science**

What do the hairlike structures on a cell do? Please don't give me a link to another website. Thank you!

**Chemistry**

It is A

**Physics**

What does the M in Mu stand for in the equation? Momentum?

**Geometry**

Find the measure of the angle formed by the hands of a clock at 9:43. Thanks!

**English**

sometimes scientist make a mistake, or _, and need to do an experiment again.

**Chemistry**

Assume that the ionic compound CaCl2, separates completely into Ca and Cl ions when it dissolves in water. How many moles of each ion are present in the solution???

**MathLog#4**

How would you solve for 'a'? (1/a) - (1/b) = c would you use the LCD???

**Chemistry**

Did anyone end up getting this. if you plug in the numbers above you still need the retain rate to find k. How do you do that??!!

**MATH**

X=3 y=3

**math**

In the megalopolis stadium there were 32 sections, and each section could seat 950 people. How many people could the stadium seat?

**Accounting**

Can someone tell me the formula of how to calculate depreciation?

**science**

how is the mouth of a perch and earthworm specialized.. PLEASE HELP!

**physics, math, science**

a soccer ball is kicked on the ground at 8m/s. another player is standing 30 m away. if she needs to intercept it at 20m - how much time does she have and how fast must she run?

**physics**

an object slides off a roof 10 m above the ground with an initial horizontal speed of 5 m per second. the time between the object's leaving the roof and hitting the ground is 1.4s. how far does it land from the wall?

**fluid mechanics**

A plastic bag is filled with 1 ft3 of air at 17° C at atmospheric pressure. What is volume at 2 atm pressure?

**fluid mechanics**

What is the pressure change require to change the volume of air by 1%?

**Psychology**

Pyschologists train rats to fight and scratch each other by shocking them if they are somber. How is that negative reinforcement?

**Math**

-3x+4y-1=0 +1 +1 -3x+4y=1 -28 -28 -3x=-27 --- --- -3x -3x x=9

**Science**

what creates the circulation of air or water that forms from uneven heating?

**math**

A square garden Circular Garden Area= pi r squared=314 meters Square Garden=Length*Width=400 meters

**science**

-273.15 Degrees Celcius 0 degrees Kelvin