# Posts by nicki

Total # Posts: 105

**Math**

The radius of the larger circle is 9cm. The diameter of the smaller circle is 11cm. Find the area of the shaded region The shaded area is between the larger circle and smaller circle . It is concentric The area of the larger circle is 81Ï€. The smaller circle has ...

*February 3, 2017*

**Math/ slope**

write equation of line through the point ( -3,2) and slope of 1/4 in slope intercept form

*February 2, 2017*

**math**

The cost c (in dollars) for the fuel and maintenance of a go-cart is given by c=10x+1200 c=10x+1200 , where x is the number of rides. It costs $40 per ride. How many rides does it take to break even?

*November 15, 2016*

**Algebra 2**

A five gallon bucket of tar can seal 3500 square feet of blacktop. If a parking lot is 15000 square feet, how many buckets of tar must be purchased in order to seal it?

*September 8, 2016*

**science**

A bullet is moving with speed of 500m/s. Hit the target and penetrate 100mm into the target. Find the retardation of the bullet.

*June 28, 2016*

**Very quick question biology**

I'm working on a biology project where I must make a molecule of glucose. I have finished my molecule but I want something in the middle of it which is the "centrepiece ". Can anyone give me any ideas of some things glucose is found in (food) in which I could ...

*February 28, 2016*

**Math**

I'm very confused ?

*February 24, 2016*

**Math**

The circular area A in square centimetres of a healing wound is given by A(r)=πr^2 Where r =the radius in centimetres. Find the rate of change of the area with respect to the radius. My work: I'm not really sure if this is correct but I gave it a try. Dy/dx =π*2r...

*February 24, 2016*

**Microsoft Word Powerpoint 2013**

i need answers to the pen foster exam

*February 24, 2016*

**Math**

find the derivative or f'(x) F(x)= √X+h - √x /h

*February 21, 2016*

**Math**

√X+h - √x /h

*February 20, 2016*

**english**

How do the other men defer to Caesar? in act 2 scene 1

*February 22, 2015*

**Math**

A typist can type 146 words in 100 seconds. At this rate, how many minutes and seconds would it take him to type 657 words.

*October 25, 2014*

**Math**

What can you multiply an expression by to eliminate the imaginary part of the denominator? 1.) (2+4i)/3i= 2.) (1-2i)/2i=

*October 8, 2014*

**science 2 quick questions**

Oh ok I understand now:) thank u:)

*September 28, 2014*

**science 2 quick questions**

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? I don't want sites because they don't help, please help me and explain . All my other questions r done but I'm stuck on these 2.

*September 28, 2014*

**To ANY SCIENCE HELPER URGENT**

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Please this is very urgent, I have finished everything else but these r my last 2 questions that I don't know! Please help! Thanks:)

*September 28, 2014*

**To ANY SCIENCE HELPER**

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Thanks:)

*September 28, 2014*

**Biology**

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Thank you:)

*September 27, 2014*

**pol 201**

Should the Supreme Court's power of judicial review be strictly limited by a constitutional amendment? In answering either question, clearly state your position (thesis) at the beginning of your post. Define important terms and explain your position fully. Consider pro and...

*July 24, 2014*

**Math :-)**

Explain why knowing the height is needed when finding the perimeter of a right triangle.

*February 9, 2014*

**algebra 1**

What is the meaning of the point x=-40 on the graph? Explain.

*November 23, 2013*

**algebra 1**

what are the domain and range of the part of the function that is graphed previously?

*November 23, 2013*

**algebra 1**

and I need help on this one problem This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS). would a graph model this problem situation?

*November 23, 2013*

**algebra 1**

can somebody help me please!

*November 22, 2013*

**Science**

xrays for molecules Cold virus- UV

*November 22, 2013*

**algebra 1**

please help me

*November 22, 2013*

**algebra 1**

. Marissa is a photographer. She sells framed photographs for $100 each and greeting cards for $5 each. The materials for each framed photograph cost $30, and the materials for each greeting card cost $2. Marissa can sell up to 8 framed photographs and 40 greeting cards each ...

*November 22, 2013*

**Science**

The frequency of a wave, represented by the letter f, is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The SI unit of cycles per second is called hertz or Hz. Hz can be expressed as a reciprocal second (s-1 or 1/s).

*November 22, 2013*

**algebra 1**

okay that's fine can you help me with one more thing though?

*November 22, 2013*

**algebra 1**

and I need help on this one problem During the fall in the Northern Hemisphere, the amount of daylight decreases each day. On September 21st, the daylight in a certain town was changing according to the equation y=-0.05x + 12 , where x = time in days and y = hours of daylight...

*November 22, 2013*

**algebra 1**

that it doesnt represent the equation

*November 22, 2013*

**algebra 1**

Does the table that follows represent this equation? Explain/justify your answer by making references to the ordered pairs in the table. T C 0 0 3 64 6 124 9 184 12 244 For B I think no

*November 22, 2013*

**algebra 1**

thats the function sorry

*November 22, 2013*

**algebra 1**

c = 20T + 4

*November 22, 2013*

**algebra 1**

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

*November 22, 2013*

**Science**

that exact order

*November 22, 2013*

**Science**

gamma rays x-rays ultraviolet visible ( v i b g y o r) infrared microwave radio

*November 22, 2013*

**algerbra 2**

. Explain your inequalities and explain why and are also inequalities for this system

*November 5, 2013*

**physics**

a stone whirled at the end of a rope 30cm long makes 10 comlpete revolution in 30 seconds find the angular velocity in radians per seconds

*October 27, 2013*

**Physics**

An arrow, starting from rest, leaves the bow with a speed of 28.8 m/s. If the average force exerted on the arrow by the bow was increased 2 times and the arrow was accelerated over the same distance, then with what speed would the arrow leave the bow?

*September 27, 2013*

**Chemistry**

I'm not certain, but is it possible that the answer is: 1.32 ?

*March 29, 2013*

**statistics**

the 2 k rule

*February 9, 2013*

**chemistry**

1)A solution has a [OH-] of 5.2 x 10-4. What is the [H3O+] in the solution? 2) A 0.25 M solution of a monoprotic acid, HA, has a pH of 2.54. What is Ka for this acid? The dissociation of HA is: HA + H2O <--> H3O+ + A- (Hint: write the expression for pH) 3 A solution has...

*December 9, 2012*

**Math**

Los Angeles is about 385 miles from San Francisco. How far apart would the cities be on a map with a scale of 1 in. = 25 mi? If necessary, round to the nearest hundredth.

*November 21, 2012*

**science**

How would your results have differed if you had over-titrated, i.e. added NaOH beyond the endpoint?

*November 12, 2012*

**math**

i dnt know how to do this can u8 help me

*October 3, 2012*

**Mte 181**

A Grasshopper can jump 19 times his length. If humans were proportional to grasshopper but based on height how far could a 5'9 person jump? Explain.

*July 13, 2012*

**Mte 180**

Is a rhombus regular because the sides are congruent is this statement true or false. Explain reasoning,

*July 13, 2012*

**Met 181**

Joe and Peter have 360 day membership to a tennis club. Joe will use it every other day. Peter will use it every third day. They both use the club on day one. How many days total out of 360 will at least one of them use the club. Please explain.

*July 13, 2012*

**Mte 181**

You have a heptagon with the following interior angles 125, 130, 175, 105, 165, 25. What's the measurement of the 7th angle and why?

*July 12, 2012*

**Grammar/Morphemes**

In the word ecologists, is eco the root morpheme or ology? Are the morphemes eco, log, y, ist, s or ec, ology, ist, s ? This is very confusing for me. Any explanation on how to find the root would be appreciated. It's easy to find roots on some words, but words like ...

*March 19, 2012*

**chemistry**

The answer would B

*February 27, 2012*

**Math**

7 days

*February 7, 2012*

**Math**

Some of Helen's plants need water every day, some need water every other day, and others need water every third day. If she waters them all today, how many days will it be before she waters them all again?

*February 7, 2012*

**math**

if a bag contains 6 red and 4 blue marbles and one is taken out and not put back and another is taken out is the problility that both are red

*September 27, 2011*

**Math**

THANK YOU SO MUCH !!!!!!!!

*July 28, 2011*

**Math**

Math help please? Eric, Jose, Shannon, and Jackie wanted to plant a garden. Jose’s dad said they could use a rectangular space in the backyard that was 8 m by 4 m. The friends decided they would first like to make a colorful border for the garden using small flowering ...

*July 28, 2011*

**Physics**

A flower pot is dropped out of the twentieth story window. How far does the pot drop in 3 seconds? How fast will it be moving after 7 seconds?

*June 21, 2011*

**Marketing**

Please help. How do organizational and consumer markets differ? What are the implications of both of these kinds of differences for developing marketing programs?

*May 26, 2011*

**Good Reads? 6th and 7th grade**

Please. I need a list of Non-fiction books recommended for 6th and 7th grade readers. Thank you and have a nice day. God bless! <3

*May 24, 2011*

**Math Word Problem**

Need a formula for this math problem. Help!? Relinda owns a tea shop and is creating a new mix of tea for her customers. She is using a standard black tea that sells for $7 per pound and a special orange flavor that sells for $11 per pound. She is planning to make a 40 pound ...

*April 27, 2011*

**Math**

if two polygons are congruent, then they are similar. What is the contrapositve of this statement?

*April 25, 2011*

**math**

A. The commutative property of multiplication. (states that order of the factors does not affect the product in multiplication). B. The associative property of addition. (states that grouping symbols, or parenthesis, does not affect the sum in addition problems).

*April 25, 2011*

**Spanish-7th grade-Please check**

Great job! I think it's all correct, however for number 4 is without the 'al': Nosotros jugamos voleibol.

*April 25, 2011*

**Math. Please help!**

thank you so much!

*April 25, 2011*

**Math. Please help!**

144/k=9 I don't understand how to do this using reciprocals, how my teacher wants me to solve the problem. Note: The fraction bar is in my paper, so it's 144 being the numerator, k being the denominator, and then =9 if that makes any sense.

*April 25, 2011*

**Math**

Suppose there are 500 pennies in a row... (math problem)? The pennies are all "heads up" Now suppose that 500 people line up and ... Person #1 turns over all the pennies Person #2 turns over every 2nd penny, starting with penny number 2 Person #3 turns over every 3rd...

*April 25, 2011*

**PLEASE HELP! Google?**

THANK YOU SOOO MUCH!

*March 30, 2011*

**PLEASE HELP! Google?**

Sorry I'm posting again. I need to find the obesity rates of the countries Romania, Russia, and Rwanda by gender. (for example ___ percent of Russian women are overweight; _____ percent of Russian men are overweight). I can't find any websites! D: Anny help would be ...

*March 30, 2011*

**Social Studies, English**

that is soo true! My teacher is just requiring me to do this, though. -_-

*March 30, 2011*

**Life orientation**

ai..guyz dnt b so naive mxm tl us....stp bin so stbon..is not lik wen u got th answer we hv t beg or wat....if u dnt wnt t tel jst save ur airtym xem nd shave ur words into ur a&?

*February 21, 2011*

**science**

What is the name of the process when carbon dioxide moves blood to the alveoli?

*January 13, 2011*

**chem**

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X? a) both isotopes occur with the same frequency. b)12X occurs more frequently than 13X c)12X occurs less ...

*December 1, 2010*

**chemistry**

Are amino acids other than the usual 20 amino acids found in proteins? If so, how are such amino acids produced?

*October 29, 2010*

**biochemistry**

What amino acids have no chiral atoms?

*October 28, 2010*

**Math**

Which of the following is NOT a real number? (Please explain why!) (1) -1 (I already ruled out this answers because integers can be real numbers) (2) square root of 3 (3)square root of -3 (4)0.101001000100001...

*October 28, 2010*

**chemistry**

No, because it's the valence electrons on the metals that take/release energy in the form of visible emissions, not the chloride or fluoride ions.

*October 6, 2010*

**chemistry**

What are three thermodynamic quantities that are not state functions and three that are?

*October 5, 2010*

**Biochemistry**

How do you calculate the free energy change for the acetyl phospahate hydrolysis in a solution of 2 mM acetate, 2 mM phosphate and 3 nM acetyl phosphate. The standard state free energy of hydolysis of acetyl phosphate is /\G = -42.3 kJ/mol.

*October 4, 2010*

**chemistry**

What is the net ionic equation for chlorine ion and silver nitrate reagent?

*September 27, 2010*

**chemistry**

If you mixed equal volume of .1 M HCl and .20 M Tris (pka=8.3), IS THE RESULTING SOLUTION A BUFFER SOLUTION? Why? or Why not?

*September 18, 2010*

**biochemistry**

How do you calculate the PH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of 1.0 M sodium lactate?

*September 18, 2010*

**12th grade math**

Identify the domain and range: 1.) y = x^2 / 4x^2 - 1 2.) y = -3 / (x+2)^2 + 1 3.) y = ³√-x^2

*September 13, 2010*

**math**

Two boys divide a profit of $36 in the ratio of 5:3. How much does each boy get?

*April 1, 2010*

**algebra 2**

p^5 p^-4 z^2 divided by z^-5 zp^3 -21a^2 b^8 divided by -18a^-4 b^10 (2kr^3)^-3 divided by 4k^-2 r^6

*January 6, 2010*

**physics**

oh my gosh thank you so much this totally helped

*January 6, 2010*

**College Algebra.**

Find the equation in standard form of the hyperbola that satisfies the stated condition. Foci (0,5) and (0,-5), asymptotes y = x and y =-x

*December 17, 2009*

**College Algebra.**

Find the equation in standard form of the ellipse, given Center (-2,4),vertices (-6,4) and(2,4) foci (-5,4) and (1,4)

*December 17, 2009*

**algebra**

Given 3+i is a root, determine all other roots of f(x)=x^4-2x^3-x^2-38x-130.

*December 17, 2009*

**Algebra**

Do I have this right? A first degree polynomial crosses the x axis A second degree polynomial touches the y axis without crosisng A third degree polynomial flattens against the y axis.

*November 30, 2009*

**Algebra**

solve by elimination method; 3r-7s=13, 7r-3s=69

*November 1, 2009*

**8th grade Math**

A fish tank 24 inches long, 16 inches wide, and 12 inches high is 3/4 full of water. By how many inches will the water level rise if you should add 576 cubic inches of water?

*August 24, 2009*

**Geometry**

IDK ask someone DUH

*August 8, 2009*

**6th grade science**

what is the purpose of testing variables I am stuck, can you help me?

*June 6, 2009*

**Chemistry**

Which element has a greater electroniegativity, Al or Ge. I wasn't sure, since Al was further up, but Ge was further right. Thanks for your help.

*April 17, 2009*

**Chemistry**

I'm working on single replacement reactions. I know about flipping elements around, like Au+PtF yields AuF+Pt. However, I'm not sure how to do it when there's multiple elements like Al+AgC2H3O2. What would the answer be, and how would you decide what to flip? My ...

*April 16, 2009*

**Chemistry**

I lost the periodic table my teacher gave me, and I need to find one online that shows charges at the top in columns, as well as charges for the elements with multiple charges online. Could you lead me to any good sources? Thanks

*April 16, 2009*

**Latin**

What does the sentence victoria numerum servorum non augebit translate to? I got-the victory did not add to the many servant. This makes no sense, since many and servant do not agree. What is the correct translation? And thank you

*April 15, 2009*

**History**

I'm trying to find evidence online that the 1920's or World War I was known as the Lost Years. I remember hearing this before. Is this true? Why is it called this? Thanks for explaining this.

*April 14, 2009*