# Posts by Amanda

Total # Posts: 2,554

**algebra 2**

Factor the difference of two cubes: 5x^4y^2-40xy^5

**Finite Math**

An urn contains six red balls and five white balls. A sample of 2 balls is selected at random from the urn. What is the probability that at least one of the balls is red?

**Programming**

Write a program (pseudocode) that would calculate and display the results for the multiplication table for values ranging from 1 to 100. This what I have so far: Declare X, Y, Z As Integer Write “10 x 10 Multiplication Table” For (X = 1; X<=10; X++) For (Y = 1; Y&...

**Chemistry**

How many mL of 5.5 M KOH are needed to prepare 300 mL of 1.2 M NaOH?

**chemistry**

How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

**chemistry**

How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

**English**

no seprate sentence

**English**

Sentence with: Locomotive revolting caricaturist contraband

**1**

What is intensity

**chem 2**

4.57

**HELPPPP ! -.-**

EARTH SCIENCE ; NOBODY WANT TO HELP ME -.-

**HELPPPP ! -.-**

Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

**Science**

Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

**Earth Science**

Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

**ap chemistry**

Ka=3.5X10^-8 pH+pOH=14 14-8.00=pOH pOH=-log[OH-], so [OH-]=10^(-6.00)=1x10^-6 HOCl + OH--------H20 + OCl- .05M X 0 -X -X +X .05-X 0 X THEN USE HENDERSON-HASSELBACK EQUATION pH=pKa+LOG[A-/HA] 8.00=-LOG(3.5X^-8)+ LOG [X/ (.05-X)] 8.00=7.46+LOG [X/(.05-X)] .544=LOG[X/(.05-X] TO ...

**Math**

you need to use the Fisher formula to find the real interest rate 1+R=(1+r)x(1+h) where R=11%nominal rate h=3.8%inflation and r= the real interest rate 1+.11=(1+r)x(1+.038) r=6.94% =I/Y N=40 PV=0 FV=1.5million PMT=7630.72

**math**

if jhonny got a raise from 4$ to$4.60 what is the precentage of increase for one hour

**Physics**

Calculate the net charge on a substance con- sisting of a combination of 7.2 × 1013 protons and 4.8 × 1013 electrons. Answer in units of C

**algebra 1**

(w^3-57w+43) / (w+8)

**business**

I feel like it would be - C. focus exlusively on the initial salary rather than on benefits or furture opportunities. D. name a specific salary and be firm in the fact that you could accept no less.

**Math**

k/5+3/20<3/10 Please help me solve this and show your work please and thank you

**Math**

Simplify each expression. Write answers using positive exponents. a. (7x^2y^3)(-2xy) b. (a^2b^3)^-1(a^2b^3) c.(-4m^3)^2

**Math**

a. -14x^3y^4 ??

**Math**

c. -16m^6

**Math**

Simplify each expression. Write answers using positive exponents. a. (7x^2y^3)(-2xy) b. (a^2b^3)^-1(a^2b^3) c.(-4m^3)^2

**Math**

Simplify each expression. Write answers in standard form. a. (4d-6)(-3d) b. 5g(g^2-2g+1) c. (-2q^2+q+3)-5(q^2+2q-1)

**business**

From what I read, I believe the answer is C.

**Math**

A bottle contains at least 4 times as much juice as a glass contains. The bottle contains 32 fluid ounces. Write an inequality that shows this relationship. Please help me show your work please and thank you

**Chemistry**

How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.

**Chemistry**

How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.

**vocabulary**

A. denotative B. connotative

**Algebra 1**

simplify the expression: (y+5)^3

**Criminal Justice**

Suicide is the _____ leading causes of death in the US and the ______ leading cause of people between the ages of 15-34.

**Chemistry**

How much carbon dioxide has to be bubbled into aqueous sodium hydroxide to obtain a solution containing 3.5 mol of sodium hydrogen carbonate?

**Chemistry**

You dissolve 5 g of calcium hydroxide in 2 liters of water. What is the molarity of the hydroxide ions in this solution? What is the molarity of the calcium ions in this solution?

**Chemistry**

How much 0.5 M HCl is needed to neutralize 5.5 kg of ammonia dissolved in 6 gal of water?

**business english**

I believe it's B. When I tried it in my spell Checker it only underlined ''received"

**Algebra**

SOMEONE PLEASE ANSWER MY QUESTION

**Algebra**

An airplane takes off from an airport at 7:00 a.m. traveling at a rate of 350 mi/h. Two hours later, a jet takes off from the same airport following the same flight pattern at 490 mi/h. How long would it take for the two planes to meet each other?

**business english**

I think 19 is B. When you check any of these under spellcheck - as a tip from another post with this same question, it only underlines "received" therefore, a spell checker would catch that as an error because its the only word actually spelled incorrectly.

**Physics**

A nurse counts 76 heartbeats in one minute. What are the period and frequency of the heart's oscillations?

**chemistry**

what is the mass in grams of 0.0850 mol of hydrogen atoms?

**physics**

a speaker at a concert generates 1 x 10^-2 w/m^2 at a distance of 20m form the speaker at a frequency of 1kHz 1) calculate the wavelength of the waves emitted. b) what is the intensity level at 20m

**physics**

A shot putter projects the shot at an angle of 37 degrees above horizontal with a force of 980 Newtons (N). What are the magnitudes of the vertical and horizontal components of the 980 N force?

**UofP**

4(x-6)+6=6(x+2)-10

**MATH geometry**

A CRICLE HAS A DIMAETER OF 6FT. WHAT IS ITS CIRCUMFERENCE, ROUND TO THE NEAREST UNIT?

**MATH geometry**

A CRICLE HAS A DIMAETER OF 6FT. WHAT IS ITS CIRCUMFERENCE, ROUND TO THE NEAREST UNIT?

**Physics**

A plane flies at 800km/h in stationary air. The distance to be traveled is 3000km. What was the wind speed if the journey actually takes 4.0 hours?

**Comm 100**

What statements is true concnerning cultural context/ It involes verbal clues only It is about globalizaiton It is communicated primarily thorugh environment and nonverbal clues

**physics**

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of kinetic friction...

**physics**

I am trying to study for my exam i have tomorrow and this type of problem keeps giving me trouble can someone please help me:: A 3.24 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.8N at an angle theta=23.0degrees above the ...

**chemistry**

What volume of hydrogen gas is produced when 19.6 g of sodium reacts completely according to the following reaction at 25oC and 1 atm? sodium (s) + water (l) sodium hydroxide (aq) + hydrogen (g)

**Comm 100**

Amanda sits in the seat right next to another person in a movie theater full of empty seats. The other person gets up and moves to another row. According to the expectancy violations model, the other person responded to Amanda's behavior by ________.

**math**

7

**statistics**

(.13)^2

**Physics**

include the steps too please!

**Physics**

Calculate the force of gravity on a 2 kg mass at Earth’s surface. The mass of Earth is 6 * 10 ^24 kg, and its raidus is 6.4 * 10 ^ 6.

**SAT**

How does the SAT motivate students?

**pre calc**

Simplify csc x - cos x cot x

**pre calc**

If tan theta=-3/4 and 90°<theta<180° Then find cos theta

**pre calc**

If csc A=2 find the value of sin A

**SAT**

What are some reasons to why the SAT is fair?

**principle of management**

couldn't it be organzing? "B"

**world history**

Political instability between competing states during the period from 1000 to 500 B.C.E. led to A. advances in technology. B. a decrease in trade. C. a decline in new religious practices. D. fewer opportunities for new ideas about society.

**College Algebra**

Find X such that the point(x,9) is 10 units from (9,3)

**English**

Tell me everythings that's up there

**English**

10 words of merry things 3 words of frosty things 10 words of musical gifts 9 words of things with bells

**chemistry**

An endothermic reaction was found to have an activation energy of 100 kJ. If this reaction is reversed, the activation energy is only 20 kJ. What is the value of delta H for the endothermic reaction?

**chemistry**

In an exothermic reaction, delta H was found to be -40 kJ, and the activation energy to be 30 kJ. What would be the activation energy of the reverse reaction?

**business math**

$12916.70

**history**

I just did this test, the correct answer is D.

**Geometry**

How do I determine if a quadrilateral is a parallelogram? Does anyone know the formula to determine this because I have to justify my answers. Thanks.

**psychology**

The task is to redesign Milgram's experiment so no one is hurt, physically or emotionally. However, from my understanding, the experiment is designed to test how far subjects will obey an authority figure even if it means inflicting pain on another. To inform the subject, ...

**physics**

Samuel travels to the east at 15m/hr for 20 minutes. Then hevtravels 30 degrees north of east 2m/s for 15 minutes. What is his displacement?

**physics**

Samuel travels to the east at 15m/hr for 20 minutes. Then hevtravels 30 degrees north of east 2m/s for 15 minutes. What is his displacement?

**physics**

also 1 second

**algebra**

What is b__8 help me

**chemistry**

Determine the [H3O+]. Are these solutions acidic or basic? a. [OH-]=7.0x10^-8 a. [H3O+]= acidic or basic? b. 0.00030 M Mg[OH]2 b. [H3O+]=acidic or basic?

**chemistry**

Determine the pH. Are these solutions acidic or basic? a. [H3O+]=1.0*10^-8 a. pH=acidic or basic? b.[OH-]=1.0*10^-9 b. pH=acidic or basic? c.pOH=1.4 c. ph= acidic or basic? d.pOH=7.8 d. pH=acidic or basic?

**chemistry**

Identify the conjugate acid of the following bases? what acid is it? A) F^- B) HSO4^- C) CH3COO^- D) CO3^2-

**chemistry**

Identify the conjugate base of the following acids? The names. For example HCl is hydrochloric acid. A) HSO4^- B)H3O^+

**chemistry**

78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?

**chemistry**

78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?

**chemistry**

can u please explain to me where did u get 2 to find radius?..

**chemistry**

a metal crystallizes in the face centered cubic crystal structure with a unit cell edge of 5.48 x10 power of -8 cm. the density of the metal is 6.90 g per cubic cm. a. what is the mass (g) of a single atom of this element. b. what is the atomic weight of the element (g per mol...

**chemistry**

a metal crystallizes in the face centred cubic cubic crustal structure with a unit cell edge of 5.48 x10 power of -8 cm.the density of the metal is 6.90g per cubic cm. a. what is the mass in grams, of a single atom of this element. b. what is the atomic weight of the element (...

**chemistry**

and also how to get the # of atoms per unit cell...

**chemistry**

can u please explain to me where did u get the 3 to find radius?.. thank you..

**chemistry**

Rubidium crystalizes in the body centred cubic structure with an edge length of 560.5 pm.. a. calculate the radius (in pm) to 4 sig figures. b. calculate the density to 4 sig.fgures. thnks guys..

**chemistry**

hi need help for these questions a. which of the ions Cs+, Sr 2+, Ba 2+, will have the largest heat of hydration?which is the smallest? b. of the two compounds NaF and MgF2,which has the strongest intermolecular forces? c. of the two compounds NaNO3 and HF, which has the ...

**medical billing and coding**

ok when it is put that way I udnderstand it better. thank you very much Ms. Sue, have a good night.

**medical billing and coding**

I got the code modifier for each one down but i am not understanding how to give the rationale my intructor needs.

**medical billing and coding**

I need help with this assignment. Apply the appropriate Level II HCPCS code modifier for each of the following examples. Explain your rationale for each selection. a. Sutures, upper right eyelid b. MD calls ambulance to transport a patient from his office to the hospital for ...

**Chemistry**

a solution is made by combining 10.0 ml of 17.5 M acetic acid with 5.54 g of sodium acetate and diluting to a total volume of 1.50 L. a)calculate the pH of the solution. b) how many grams and milliliters of 14.6 M potassium hydroxide needs to be added so pH=pKa? c)what is the ...

**chemistry**

thank you..

**chemistry**

Consider the following entities: Ar, SiH3F, Xe and CClF3. which one will diffuse the fastest?what is rms speed (m/s) of the slowest moving atom at 25 C..?

**physics**

A 140 kg sleigh is pulled by one horse at a constant velocity for a distance of 0.90 km on a level snowy surface. The coefficient of kinetic friction between the sleigh runners and the snow is 0.25. what is the work done by force? what is work done by friction?

**phyiscs!**

Having landed on a newly discovered planet, an astronaut sets up a simple pendulum of length 1.51 m and finds that it makes 291 complete oscillations in 697 s. The amplitude of the oscillations is very small compared to the pendulum’s length. What is the gravitational ...

**pre algebra**

USE MULTIPLYING BY 1 TO FIND AN EXPRESSION EQUIVALENT TO 8/5 WITH A DENOMINATOR OF 5A

**Biochemistry (BCMB)**

why do plants already have ATP and NADPH for chemical energy from lights reactions of photosynthesis but they still go on to manufacture energy-rich sugars?