# Posts by Hannah

Total # Posts: 3,342

**algebra 2**

how do you simplify 5-x _______ x^2-20 to = 4

**algebra**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

**algerbra 2**

C. The company accountant says that the rational expression will never have a zero denominator because , the number of units, is always a whole number. Explain why the accountant is correct. 20^-180/4^2+36x+72 this is the second part can you help me

**algerbra 2**

B. The rational expression is not defined for any values of 20^2-180/4x^2+36+ 72 for which the denominator equals zero. Find the value(s) of for which the denominator equals zero.

**algebra 2**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

**biology**

4. Using sunscreen and consuming energy drinks involve _____________________. A. using biological information to make informed decisions B. risks to using biotechnology C. using genomics to make informed decisions D. all of the above

**biology**

A sheep with human genes spliced into it to produce human antibodies is an example of a(n)

**algebra 2**

On a second report that you reviewed, the team simplified the expression to 4. Show how to simplify the rational expression correctly. Explain your steps so that the team understands how to simplify an expression similar to this in future experiments.

**alg**

A clothing company uses the expressions that follow to estimate revenue and expenses based on the production of x lots of clothes: Revenue: Expenses: The ratio of revenue to expenses is represented by the rational expression that follows: A. Factor the numerator and ...

**algebra 2**

3x2 – 12x + 7x – 28 factor the polynomial by grouping

**algebra 2**

here is the last part of the question Another canvas of size B has a width of 2x+3 and a length of 6x-1. Write a polynomial expression, in simplified form, that expresses the difference in area of canvas size A and canvas size B

**algebra 2**

can you please help me with this

**algebra 2**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

**quantum physics**

the quantum factor algorithm for N=91 is carried out. What is the period k of the periodic superposition set up if it chooses x=8? Guys please help...its very urgent!!

**quantum physics**

@anony i got 8 d.help me with 6 a

**Math Critical Thinking**

2years=24months

**allgebra**

can you help me with this last one?

**allgebra**

1/3(x+5=k) solve for x

**algebra**

thank you

**algebra**

3(a+5b)-7/2(2b-a) combine like terms

**math**

Solve the compound inequality. -3 < 2x - 3 < 5

**math**

Suppose a number is chosen at random from the sample space {3, 4, 5, 6, 7}. Find the probability as a fraction and percent. Round the percent to the nearest tenth. Please show your work. P(less than 3)

**calc**

C(d) = 120 + 30d + 1/8 d^4 sorry the formating gets off

**calc**

The cost of producing d hundred plastic toy dinosaurs per day in a small company is C(d) = 120 + 30d + 1 8d4 dollars. This company is currently producing 500 di- nosaurs each day. Using calculus, estimate how much the company should change the production to make their daily ...

**calc**

On January 1, 2013, at a price of x dollars, the demand for a certain product was D(x) = 300 x2 + 10px thousand units per month. t months after January 1, 2013, it is estimated that the price of the product will be x(t) = 3t4/3 +16 dollars. At what rate is the demand changing ...

**calc**

the answer is >-1 but when i derived the equation there were still no negative numbers because -7/3 is a constant so it went to 0. after deriving the equation i got t to be -1 so i pluggedin -2 and 0 and got both to be positive(or increasing) all solutions is not an option ...

**calc**

sorry the equation is 1/3(t^2) +t^2 +t -7/3

**calc**

An ice hockey puck is sliding along a straight line so that its position is s(t) = t3 3 + t2 + t − 7/3 . At which times t is the velocity of the puck increasing? I tried deriviting the equation then solving for t and plugging in numbers to see if it was positive or ...

**calc**

thankyou!

**calc**

Find an equation of the tangent line to the graph of f(x) = (x3 − 3x2 + 1)(2x4 − 1) at x = −1.

**finance**

please help

**finance**

1. Yest Corporation's bonds have a 15-year maturity, a 7% semiannual coupon, and a par value of $1,000. The market interest rate (r) is 6%, based on semiannual compounding. What is the bond’s price? 2. A 20-year, $1,000 par value bond has a 9% annual coupon. The bond ...

**physics**

A staging that weighs 350 N supports two painters, one 230 N and the other 440 N. The reading in the left scale is Fl = 480 N .What is the reading Fr in the right hand scale? Answer in units of N

**biology**

5. A researcher finds that blood alcohol levels cause progressive damage to the liver. All the mice in his study were fed the same amount and types of food. Different concentrations of alcohol were injected into each mouse. One group of mice does not receive any alcohol at ...

**Science**

What building blocks are starches made of? What is the difference between sugar and starch? What term describes the size of a starch? What molecule has to be added to a starch to break it down?

**Science**

What process is being demonstrated when you put 3 glucose's together?

**physics**

A cyclist maintains a constant velocity of 6 m/s headed away from point A. At some initial time, the cyclist is 245 m from point A. What will be his displacement from his starting position after 88 s? Answer in units of m What will be his position from point A after that time...

**geography (ms. sue)**

oops! i'm so sorry! i did it again! i keep forgetting to stop typing random names instead of mine!

**geography>3**

i saw some typed this name in a different post and i though it was beautiful! again, i'm so sorry!

**geography>3**

oops! i'm so sorry! i did it again! i keep forgetting to stop typing random names instead of mine!

**geography>3**

the region is russia

**geography>3**

why might many of the region's rivers flow toward the north?

**geography>3**

thank you!

**geography>3**

it's not the water cycle? is it rain?

**geography>3**

it got to me by the wind?

**geography>3**

my textbook says that, for example, water pollution can be caused by air pollution --because rain washes chemicals out of dirty air and into bodies of water.

**geography>3**

is it the water cycle?

**geography>3**

anyways, is sewage, chemical fertilizers, oil spills the answer?

**geography>3**

i have more than one question...

**geography>3**

oops! i meant to write "what natural processes spread pollution from its point of origin?"

**geography>3**

what natural processes spread creating a new region?

**geography>3**

oops! okay! sorry!

**geography>3**

i have some more questions to ask you but thank you for helping me with this one!

**geography>3**

oh! okay i think i get it now...so then what you're basically saying is true,that by having similar laws, currency, and economies, the european union is creating a new region?

**geography>3**

i don't get it...

**geography>3**

in what way is the european union creating a new region?

**geography**

are you a teacher?

**MAT 102**

What is the domain of "p" when p(x)=x squared-2x+4

**world history**

What role did the Greeks play in the creation of the Maurya Empire?

**Genetics**

Albinism is inherited as a simple recessive trait. If a woman and her husband are both heterozygous for albinism then what is the probability that their first five children will have these phenotypes? Child 1 - albino; child 2 - normal; child 3 - normal; child 4 - albino; ...

**Geometry**

@steve it is asking what is x

**Geometry**

If BC bisects angle ABD, and angle abc=5x+11 angle CBD=10x-4 a.5 b.3 c.1 d.2

**English**

What literary devices does this sentence pertain to? Love enfolded us in her arms.

**Chemistry**

A vessel containing 39.5 cm3 of helium gas at 25°C and 106 kPa was inverted and placed in cold ethanol. As the gas contracted, ethanol was forced into the vessel to maintain the same pressure of helium. If this required 18.8 cm3 of ethanol, what was the final temperature ...

**algebra2**

solve the equation a-12/ac=2b solve for a

**statistics**

Most Americans, 67% in fact, say frequent handwashing is the best way to fend off the flu. Despite that, when using public restrooms, women wash their hands only 66% of the time and men wash only 43% of the time. Of the adults using the public restroom at a large grocery ...

**math**

james works an average of 22 hours per week with a standard deviation of 3.5 hours. what percentage of the time does james work more than 31 hours per week?

**Physics**

You know the angles by the "north," "northeast," and "30 degrees west of south" (180+30)

**Calculas**

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1 2 in. margins on the sides. She further stipulated that each page should have an area of 52 in.2. Find a function in the variable x, giving the ...

**Calculas**

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1 2 in. margins on the sides. She further stipulated that each page should have an area of 52 in.2. Find a function in the variable x, giving the ...

**Math**

Hannah has $120. Hannah and Peter have $230. Peter has 6 times as many money as Francine. How much money does Hannah have

**Math**

On January 1, 2010, an investment was worth $1000. By the end of 2010 the investment had lost 30%. What percent must the investment grow by in 2011 to be worth $1000 by the end of 2011? Round your answer to the nearest tenth of a percent.

**chem**

Oh it is. It's especially bad when people waste my time with their replies that are of no use to me :)

**Chemistry**

8. Imagine you have two containers of gas, one labeled gas A and one labeled gas B. Gas A has an average speed of 700 m/s and gas B has an average speed of 1100 m/s. Both containers are being held at the same temperature. How could you match the average speeds of gas A and gas...

**chemistry**

4. A container of gas has a volume of 3.5 L and a pressure of 0.8 atm. Assuming the temperature remains constant, what volume of gas would result if the pressure was 0.5 atm? A. 1.8 L B. 5.6 L C. 0.2 L D. 2.2 L My guess is B but I just want to double check

**Chemistry**

1. What is the mass of the 3.7 mol PbO2? A. 884 g PbO2 B. 65 g PbO2 C. 0.15 g PbO2 D. 825 g PbO2 I honestly have no guess for this one. Can anyone tell me how to do it?

**Algebra**

Twenty ounces of water are removed from a container and 3/4 of the original remains. How much water did the container have originally?

**Math**

Hi, I need some help with this question. Could anyone help? Tammy has 15 coins that total $1. What coins does she have and how many of each? Is there more than one answer? Find all the possibilities. Thanks, Hannah

**Math**

If I add all the numbers from 1-100 what do I get? This question has been confusing me for a while...

**Chemistry**

7. Which of the following is true? A. Cesium is the most active group 1 metal, because its valence electron is held more tightly than the others in the same group. B. Group 1 elements are more reactive than the group 2 elements because they have more valence electrons to lose...

**Chemistry**

15. When chromium loses two electrons, its configuration changes to A. [Ar]4s1. B. [Ar]3d4. C. [Ar]4s13d5. D. [Ar]4s13d4. I'm guessing it's B but I just want to double check

**Math**

Hi! I need some help with a problem in the packet I have to complete over the summer. Can anyone help? at uncle joe's farm there are chickens and sheep. tommy counted the heads and got a total of 12 heads. then he counted feet and got a total of 38. can you figure out how ...

**physics**

a 2.00 kg rock is dropped from a bridge to the water 50.0m below. what is the velocity as it hits the water? what is its kinetic energy as it hits the water?

**Analytical chem**

SPECTROPHOTOMETRIC ANALYSIS OF STEEL I have a known molarity of KMnO4 solution. It was diluted by a factor of 20. Its absorbance is now 1.18. The length of the path is 1 cm.What is the molarity of the new solution.

**chemistry**

Atoms of the group 15 elements tend to react to form _______ ions. A. 5+ B. 32 C. 52 D. 3+ My guess is D. Which is correct?

**Economics**

Anybody know the answer??

**Trigonometry**

Solve the triangle using the law of cosine: a= 5 b= 6 y= 35

**Trigonometry**

Could someone please help me out with this? I've read my text book, but can't seem to figure it out. And could you please show me how to do them? The Earth travels in a circular orbit around the Sun at 29.79 km/sec. If the radius of the orbit is 1.496 x 10^8 km, what ...

**science**

if a person puts 500 newtons into pushing an immovable wall that was 2 meters tall how many joules of work would they do

**social studies**

What are the responsibility's of the department of education

**social studies**

what is the responsibility's of education?

**social studies**

What is the responsibility's of the department of energy

**english**

One way we get to know characters is to want to avoid the most. Select TWO characters from Julius Caesar and write short essays on what you believe they fear the most and what evidence you used to come to this conclusion. any ideas

**geometry need asap**

A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the sides on the bottom are 2 inches for the base and the height is 7 inches

**geometry**

A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the sides on the bottom are 2 inches for the base and the height is 7 inches

**geometry**

I need to find the height and volume of a triangular prism. the front measures 8 cm and the side is 19 cm.

**geometry**

Find the surface area of the cone. in pie the radius is 3 cn the height is 18

**geometry**

I need to find the base, height, and volume of a triangu;ar prism. the front is 8 cm and the side bottom line is 19 cm

**geomerty**

please help

**geomerty**

A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the base is 2 in and 2 in the height is 5 in then the triagle is 2 in. There is a line between the h 5 and the 2