# Posts by aria

Total # Posts: 279

**Math**

Find a1 and r for the geometric sequence: a4= -1/4 and a9= -1/28

**Math**

find a5 and an for the geometric sequence: a1=8 and r= -5

**Social Studies**

12. What is one cost that victory in the cold war brought to the united states?

**Math**

Arithmetic sequence: For a8 and an for the sequence: -3,-7,-11 My answer a8=33

**Math**

write the first five terms of a sequence where the first term is 8 and the common difference is 6. My answer: 8,14,20,26,32

**Math**

Solve by substitution: 2x= -y+3 5x-y=11

**History**

Was the U.S. successful in stopping the spread of communism in Europe prior to 1950?

**Math**

Evaluate the determinant of each matrix -3 2 -3 0 -1 -1 3 0 -3 My answer is -36 The correct answer is -24 but I don't understand how they got the answer.

**Math**

Find the inverse for the following matrices: 2 and -4 is on top 6 and 3 is on bottom My answer is 90 120 -180 60

**Math**

Two complementary angles have measures of s and t. If t is less than twice s, which system of linear equations can be used to determine the measure of each angle?

**Math**

Shania bought a new computer for 1,550 from computer 'r' us. If the value of the computer depreciates at a rate of 5.35%per year, when will the value of the computer reach 825 ?

**Math**

The amount of radiocarbon present after t years is given by y=ae^-.0001216t . find the half live of 14

**Math **

If current trends of burning fossil fuels and deforestation continue, then future amounts of atmospheric carbon dioxide in parts per million (ppm) will increase exponentially. In the year of 1990, there was 353 ppm. A)In the year of 2000, there was 375 ppm of carbon dioxide, ...

**Math**

Solve the missing variable e^(x+6)+5=1

**Math**

During an epidemic, the number of people who have never had the disease and who are not immune (they are susceptible) decreases exponentially according to the function where t is time in days. f(t)=15,000e^-.05t Determine how long it will take for the initial number of people ...

**Math**

Solve for the missing variable. 4^x =2 Example: 3^2n+1 = 3^4 Cross out both the threes 2n+1 =4 Subtract 1 2n=3 n=3/2

**English**

Take a position that explains if, and to what degree, modern American culture is an outgrowth of the philosophies of the Founding Fathers. I agree that American culture is an outgrowth of the philosphies of the founding fathers. I have one reason and that is redemptive ...

**anatomy**

describe in detail how a lack of calcium ions would affect muscle contraction.

**Anatomy **

What consequence would an over abundance of acetylcholine have both overall and at the molecular level of the muscle?

**Math**

Graph the following polynomial. f(x)=(x+3)^2(x-2)^2(x+5) How would i graph ? f(x)=(x+5)

**Math**

Divide into intervals and evaluate to find the max/min. f(x)= -(x-1)^2(x+4) I pick -2 -(-2-1)^2(-2+4)=-18 Is that the correct answer

**math**

Oceanographers use a quantity known as shoreline development to describe and categorize bodies of water. Shoreline development, D, measures how closely a body of water resembles a circle. Its formula is: where L is the shoreline length and A is the area of the body of water. ...

**English**

Express how the device below and structure helps acheive the purpose of chapter 4. The book is called Narrative Of The Life Of Fredrick Douglass. I just need to write a paragraph. given: brutality of slavery device: diction and structure All i know is for diction Douglass ...

**Math**

Describe how you use your calculator to find the exact zeros of a function.

**English**

What is the impact of the anaphora used in the list of grievances? (i.e the repetition of "he has". The text is call "In congress, July 4,1776" .

**Math**

Tylenol 3 has 16 mg of Codeine per 11 ml of liquid. A safe dose of Codeine is 4.8 mg/Kg/Day. A patient who weighs 215 pounds needs a Tylenol 3 prescription. There are 2.2 pounds for every 1 kilogram. How many kilograms is this person's mass? How many milligrams of Codeine ...

**Math**

There is an error in the student work shown below: Question: Divide (x^3-8)/(x-2) The student did long division and the got x^2 remainder -6+2x^2

**Math**

Example: 4x^2+8x-3 Y=4(x^2+8x+1)^2-3-4 Y=4(x+1)^2-7 Vertex:(-1,-7)

**Math**

Find the vertex H(x)= -3x^2+24x-46

**English**

government policy making I forgot a word I dont know what side to be on and dont know what my three points would be. I did search the question up and read other peoples work. But, i am still unsure and need help please. Also, i should mention I'm reading The Scarlet Letter...

**English**

Explain to what extent religion does or does not belong as part of government policy. Three reasons

**Math**

Identify the vertex y=|x-2|+1 y=-|x+5|+4 My answers 1.(2,1) 2.(5,4)

**Math**

Write an equation that is parallel to the line y=-2x+4

**English**

I think the tone is threatening because the author uses words such as "devil is waiting" and "hell". I dont know if theres more

**English**

Line*

**English**

How does this lind help create the tone ? "The devil is waiting for them,hell is gaping for them, the flames gather and flash about them, and would fain lay hold on them, and swallow them up"

**English**

Why dost thou smile so at me?” inquired Hester, troubled at the expression of his eyes. “Art thou like the Black Man that haunts the forest round about us? Hast thou enticed me into a bond that will prove the ruin of my soul? The black man,haunts,and ruin soul is ...

**English**

I know he uses diction

**English**

i already did

**English**

Identify and explain a rhetorical strategy used by hawthorne in order to build tension between Chillingworth and Prynne in chapter 4 of the scarlet letter. His choice of words represent suspense between the two. I don't know

**Math**

Find each function value. h(x) = x^2 - 8x + 1 h(-1) plug in My answer is 8. The correct answer is 10 ? I don't how the answer is 10

**English**

Chapter 2 of the scarlet letter What does this tell you about the puritan people? "there appeared, in the first place, like a black shadow emerging into the sunshine, the grim and grisly presence of the town-beadle, with a sword by his side and his staff of office in his ...

**English**

The scarlet letter "dark and abundant hair, so glossy that it threw off the sunshine with a gleam" "her beauty shone out, and made a halo of the misfortune and ignominy in which she was enveloped." Fine at least 2 phrases that describe the physical nature ...

**Math**

-5+?-50/10 Solve

**Math**

myriam compared the y-intercept of the graph of the function f (x) = 3x + 5 to the y-intercept of the graph of hte linear function that includes the points in the table below. What is the difference when the y-intercept of f (x) is subtracted from the y-intercept of G (x)?

**Math**

Solving inequalities (x+3)/2 greater than equal to (2-x)/-2

**Math**

Solving inequalities |1-15x/5| < 3

**Math**

The square root of 1 less than twice a number is equal to 2 less than the number.Find the number.

**Math**

Solve for each equation 3/x^2+x-2 - 1/x^2-1= 7/2x^2+6x+4

**Math**

I did so does x not equal -3,1,-3, and 1

**Math**

Decide what values of the variable cannot possibly be solutions for each equation. Do not solve. 2/x+3 - 5/x-1= -5/x^2+2x-3

**Math**

Decide what values of the variable cannot possibly be solutions for each equation. Do not solve. 2x/x+1 + 3/5x+5=0

**Math**

If 4<x<7, what is the range of 2x+3 ? A) 5<x<11 B)7<x<10 C)8<x<14 D)11<x<17

**Math**

Solve: 6-i/i

**Math**

Complex numbers 5i+7i x i

**Math**

Finding the common denominator x+2/x^2-49 + 3/x+7

**Math**

Dividing complex numbers 4-2i/3+1

**Math**

Dividing complex numbers 7-13i/2i

**American Government**

I think you're correct. I just did the lesson.

**English**

How does American patriotism value freedom of speech ?

**Physics**

A missile is fired with a launch velocity of 15000 ft/s at a target 1200 miles away. At what angle must it be fired to hit the target? how long after it is fired will the target be hit?

**Chemistry**

The efficacy of certain drugs is affected by pH. Many drugs are absorbed into the blood through cells lining the stomach or the small intestine by direct diffusion across the plasma membrane. Since the interior of the plasma membrane is hydrophobic, uncharged molecules cross ...

**chemistry**

Bicine is an amino acid, but not a building block of proteins. Rather, it is a reagent commonly used in the biochemistry laboratory. Bicine contains two ionizable groups: tertiary amine (pKa 8.3) and carboxyl (pKa 2.3) a. For each of the ionizable groups in bicine, draw its HA...

**chemistry**

You discovered a new diprotic acid, which you have named edmontonic acid. You want to characterize the pKa’s of edmontonic acid, so you perform a titration experiment. Your data are summarized in the table below. Your titration sample contains 150 mmol of edmontonic acid...

**chemistry**

In a titration of malic acid, what is the pH after: a. 0.75 molar equivalents of NaOH have been added? 1 b. 1.30 molar equivalents of NaOH have been added?

**History**

I'm pretty sure it's C, the appeal for preservation of democracy.

**World history**

What were the effects of Islam on the different culture of ancient African empires ?

**World history**

What were the effects of cultural diffusion on ancient Africa empires ? Is it because the three main kingdoms maintained vast trading networks across Sahara desert and into the the Middle East and North Africa

**Calculus**

when i plugged in ∫[1,4] π(25-(5-1/x)^2) dx into the calculator i got 41.196 but when i plugged in π(10log(4)-3/4) i got 16.558 which one is the right answer?

**Calculus**

for b, yes, everything is the same but instead of rotating around the x-axis, it is being rotated around the line y = 5

**Calculus**

Volume created when the area bounded by the curve y = 1/x, the x-axis, and the lines x = 1 and x = 4 is rotated about: a) the x-axis: 2.356 units^3 Is this correct? b) the line y = 5 I'm not sure how to do this one.

**Social Studies**

What did Frederick Douglass, and Andrew Jackson say about their hopes for the future of the United States? How did they each work to help change the United States? How did they each react to key events happening in the United States? Were there any key events in each person&#...

**Social Studies**

Which of the plans is best for the nation? In what ways is the plan best for African Americans? In what ways is the plan best for former Confederates? In what ways is the plan best for the nation’s future? Explain why the other two plans would not work.

**Social Studies/History**

Reed, I have tried that, but I can only fin some of the information that I need. Here is what I have left to answer: What did they say about their hopes for the future of the United States? How did they work to help change the United States? How did they react to key events ...

**Social Studies/History**

Can someone please help me(without giving me the answers) with some research. Each question asks about to people, but I have to answer for each person separately. The two people are Frederick Douglass, and Andrew Jackson. After all of that is done it still has to be turned ...

**Social Studies**

Evaluate the effectiveness of Nixon's solution to the promise he made(to find a way to stop the Vietnam war, pledging america would have peace with honor.). was it successful? how do you determine this?

**history**

Thank you so much Ms. Sue!

**history**

His solution to the promise he made, which is: to find a way to stop the vietnam war, pledging america would have peace with honor.

**history**

Evaluate the effectiveness of nixon's solution. was it successful? how do you determine this?

**Chemistry**

Consider the generic reaction between reactants A and B: 3A+4B→2C How many moles of B will be in the reaction vessel once the reactants have reacted as much as possible? (Assume 100% actual yield.)

**Math**

What angle in the first quadrant could you reference to help you find sine and cosine of each of the following angles ? 330 120 113 203

**Chemistry**

The rock in a particular iron ore deposit contains 84 % Fe2O3 by mass. How many kilograms of the rock must be processed to obtain 1100 kg of iron?

**Chemistry**

A sample of propane, C3H8, contains 10.0 moles of carbon atoms. How many total moles of atoms does the sample contain? Express the total number of moles of carbon and hydrogen numerically.

**Chemistry**

Mole calculations: How much does 2.5 x 10^24 molecules of p2o3 weigh ?

**Math**

Solve: 0=x/30-0.01y+0.07

**Math**

Add or subtract rational expressions. 16x-12/4x^2+5x-6-3/x+2

**Math**

Solve the equations below. Check your solutions. 3x-5/2=4x+1/4

**Math**

Solve the equations below. Check your solutions. 8/k=14/k+3

**World history**

How did Ghana, Mali, and Songhai get so advanced? The main export was gold, which made each kingdom wealthy and strong, and provided them with the conditions necessary for cultural and intellectual achievement. Is this the answer??

**World history**

The main export was gold, which made each kingdom wealthy and strong, and provided them with the conditions necessary for cultural and intellectual achievement. Is this the answer??

**World history**

How did Ghana, Mali, and Songhai get so advanced ?

**computer**

The field names in a database are also known as A. category or column heading ** B. The name of a row C. Individual cells in a database D. Records Am I right..?

**Science plz help**

Describe how community residents and authorities can prepare for an earthquake and its aftermath. Review earthquake advice from the USGS, the American Red Cross, and other agencies. If you live in an area that is susceptible to earthquakes, include suggestions specific to your...

**technoligy**

I knew the answer was Sum thought I was wrong. Got an F on it

**World history**

What did Machiavelli describe in his book called the prince?

**Science help**

The length of a football field is 100 yards. When you compare geologic time (4.6 billion years) to the length of a football field, you will find that each yard on the field will equal 46 million years, and each 10-yard section will equal 460 million years. Use this information...

**Math**

*how

**Math**

3d-10=5 (d-4) i don't understand hoe to solve the problem... plz help

**Algebra 2**

The cows at the evaleen dairy produce enough milk to fill a 4800 gallon tanker truck each day. The milk is then hauled to processing plant where it is put into smaller storage containers and then used to fill gallon jugs that are delivered to local stores. The storage ...

**Chemistry**

Ion flame test Why is it important to not let the wooden splint burn ?