# Posts by jason

Total # Posts: 1,341

**math**

E(t)=80.6t+81.0 and E(10)= 85.9 is what I came with which I guess you are saying that it is wrong thanks I will try to rework the problem

**math**

in 1994 the life expectancy of malews in a certain country was 70.9 years. In 1998 it was 73.6 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994 The linear functionE(t) that fits the data is E(t)= 80.6t+81.0 Use the ...

**math**

find the slope and the y-intercept f(x)=-7x-2 the slope is -7 the y-intercept is(0,-2) is this correct?

**math**

solve -16<4x-5<-4 the solution is -11/4<x<1/4 is this correct?

**math**

use the distributive property to help you solve the equation 9(w-2)=45 w=7 is this correct?

**math**

solve using multiplication -6x>1/13 The solution is < -1/78 is this correct?

**math**

solve by substitution 7x+6y=7 x=58-9y What is the solution of the system? (7,-5) is this correct?

**math**

5/8x+1/16x=7/16+x the solution is x=-7/5 is this correct?

**math**

x+5y=3 (1) x=9-5y (2) What is the solution of the system? (-3,6/5) is this correct?

**math**

-0.4x<-16 the solution is{x>40} is this correct?

**math**

Thank you so much

**math**

8x-(2x+5)=19 The solution is x=4 is this correct?

**math**

soybean meal is 18% protein; cornmeal is 9% protein. how many pounds of each should be mixed together in order to get 360-lb mixture that is 14% How many pounds of cornmeal should be in the mixture? 200 how many lbs of soybean meal should be in the mixture? 160 can someone ...

**math**

1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 56 houses available. Use ...

**math**

I need someone to review this and see if it is correct please 1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still ...

**Recycling Speech**

Can you help me write a recycling speech?

**Math Statistics**

what was the answer you finally got

**physics**

heyy that's right its in the physics book page 337 the answer is in the back of the book lol good job i need to learn how to do it lol :P

**economics**

What are the effects of the economic crisis on our society?

**science assignment**

what imapct has technology had on our society

**MATH TRIG**

FROM A DISTANCE OF 80 M. THE ANGLE OF ELEVATION OF THE TOP OF A FLAGPOLE IS 18 DEGREES. dETERMINE THE HEIGHT OF THE FLAGPOLE.(NEAREST TETH OF A M. mY CONFUSION IS ANGLE OF DEPRESSION AND ANGLE OF ELEVATION. mY TECHER CALLS FROM TOP ELEVATION WHILE i INSIST ELEVATION IS FROM ...

**Chemistry**

What is the molar solubility of PbCl2 in a solution of 0.23 M CaCl2? Ksp = 1.6 10-5 for PbCl2. idk how to do this because of the Cl2

**Biology**

Recent studies of children and juveniles of other species show that when their eyeballs are actively growing, frequent exposure to blurred images can permanently alter the shape of the eyeball. The blurring results when objects in the field of view are at various distances and...

**Biology**

Researchers in Africa found that a very high proportion of Masai, who routinely drink large quantities of milk, develop an amoebic infection after being given an iron supplement. Explain the role of lactoferrin in a diet and explain why the Masai get this problem and why Zulu ...

**Biology**

In 1999, Beverly Strassman published a study of menstrual cycling among the Dogon women in Mali. What did she find? Using her study results, what methods can you suggest reducing breast cancer in North American women who will have no children or very few children?

**Biology**

In the early 1900s, Julius Wagner-Jauregg noted that syphilis was rare in areas where malaria was common. Describe the experiment he did. What prize did he win in 1927 as a result of this experiment? Considering the ethical implications of his study, would he get the same ...

**Biology**

Haemophilia is a sex-linked recessive trait. A son born to phenotypically normal parents has Klinefelter syndrome and hemophilia. In which meiotic division of which parent is non-disjunction of the X chromosome most likely to have occurred? Explain with diagrams and state your...

**Biology**

In Drosophila, a cross was made between a female heterozygous for the recessive genes ct (cut wings) and se (sepia-coloured eyes) and a sepia male. Among their female progeny, half the phenotypes were wild-type and half sepia. Among their male progeny were 1/4 wild-type, 1/4 ...

**Biology**

At what time (be very specific) is the consumption of Thalidomide dangerous to pregnant women? What exactly goes wrong to produce phocomelia children?

**Biology**

In most Hymenoptera, all fertilized eggs develop into diploid females and all unfertilized eggs into haploid males-a condition known as haplodiploidy. Workers in these colonies share half the alleles they received from their mother, but share all of the alleles they received ...

**Economics.**

1 – One of the reasons that the U.S. Government started the Federal Reserve system was to: A – keep the banking power of the U.S. spread out among various districts. B – make sure that the U.S. banks were obeying laws regarding banking. C – have a place for...

**Economics.**

The buying and selling of government securities to alter the supply of money are: A. a painful necessity. B. Open market operations. C. equalizing the required reserve ration. D. tight money policies. I’m thinking its B.

**geometry**

how can you justify a shape

**Pre Cal.**

So I posted these...but no one answered them. Are they right? Solve 4sin^2 x + 4sqrt(2) cos x-6 = 0 for all real values of x. My answer: (pi/4)+2(pi)k, (7pi/4) + 2(pi)k Solve 2cos^2 x-5cosx+2=0 for principal values of x. My answer: 60 and 300 degrees

**Advanced Math**

Can someone check these for me? Please? Use half-angle identity to find the exact value of cos165 degrees. (-1/2) sqrt(2+sqrt(3)) Write the equation 2x+3y-5=0 in normal form. (-2sqrt(13)/13)x- (3sqrt(13)/13)y+ (5 sqrt (13)/13) = 0 Find the distance between the lines with ...

**Advanced Math**

Solve 4sin^2 x + 4sqrt(2) cos x-6 = 0 for all real values of x. My answer: (pi/4)+2(pi)k, (7pi/4) + 2(pi)k Solve 2cos^2 x-5cosx+2=0 for principal values of x. My answer: 60 and 300 degrees.

**religion**

I need to find the Historical figures and events, Central beliefs Nature of God, Texts, Ritual and practice (sacred elements & their meaning,) Ethics and morality for Hinduism

**religion**

Hinduism,Historical figures and events, Central beliefs Nature of God, Texts, Ritual and practice (sacred elements & their meaning,) Ethics and morality

**Government**

Laws that treat men and women differently: A. are always constitutional. B. are always unconstitutional. C. may be upheld by the Supreme Court if the meet certain criteria. D. may be passed by Congress, but not the states. My book says absolutely nothing about this, but I was ...

**chemistry**

Or would the bis(trichloromethyl) carbonate(triphosgene) react with itself to form the CO2

**chemistry**

How would CO2 form from the reaction of 3-methyl benzoic acid with bis(trichloromethyl) carbonate (triphosgene)? Is it possible to form CO2 from a mixture of dichloro ketone in heat?

**algebra**

i need help with these kind of problems 3x(3x + 5)(10x+2)

**Chemistry**

How would you scale down an organic chemistry experiment? Would you have to know an expected percent yield to scale it down?

**pre cal--check**

Name all the values of x that are not in the domain of f(x) = (2–x^2)/ (x+ 5) I got only x= -5 because that's the only value that would make the denominator zero.

**college**

Business Communications

**college**

Request for sample letters containing bad news messages. Need a few realy quick

**calculus**

26. A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5 miles and is going ...

**Chemistry**

Thanks for the push in the right direction, I found the standard reduction potentials. Ag+ --- +0.799 H2 --- 0.0 H+ --- -0.83 Cl2 --- +1.359 Al3+ --- -1.66 I chose Cl2 as the strongest oxidizing agent. Please tell me this is correct.

**Chemistry**

Which of the following species is the strongest oxidizing agent under standard state conditions? a. Ag+(aq) b. H2(g) c. H+(aq) d. Cl2(g) e. Al3+(aq) I think Ag+(aq) will transfer electons sooner than the other four choices. BECAUSE: H2 will hold on it its elcctrons because the...

**Chemistry**

Which of the following species is the strongest oxidizing agent under standard state conditions? a. Ag+(aq) b. H2(g) c. H+(aq) d. Cl2(g) e. Al3+(aq) An oxidizing agent is a substance that gains electrons in a redox chemical reaction. I think Al3+ has a very high electron ...

**chemistry**

In the following half equation, which is the oxidizing agent? NO3–(aq) + 4H+(aq) + 3e– <--> NO(g) + 2H2O a. NO3– b. H+ c. e– d. NO e. H2O An oxidizing agent is a chemical compound that readily transfers oxygen atoms, or is a substance that gains ...

**chemistry**

In the following half equation, which is the oxidizing agent? NO3–(aq) + 4H+(aq) + 3e– <--> NO(g) + 2H2O a. NO3– b. H+ c. e– d. NO e. H2O An oxidizing agent is a chemical compound that readily transfers oxygen atoms, or is a substance that gains ...

**math 7th grade**

A coin is tossed. If a head appears, a spinner that can land on any of the numbers from 1 to 5 is spun. If a tail appears, the coin is tossed a second time instead of spinning the spinner. What are the possible outcomes? A. (T,H)(T,T)(T,1)(T,2)(T,3)(T,4)(T,5) B. (T,H)(H,H)(T,1...

**math**

A coin is tossed. If a head appears, a spinner that can land on any of the numbers from 1 to 5 is spun. If a tail appears, the coin is tossed a second time instead of spinning the spinner. What are the possible outcomes? A. (T,H)(T,T)(T,1)(T,2)(T,3)(T,4)(T,5) B. (T,H)(H,H)(T,1...

**Biochemistry**

How were the 3 coupling sites in phosphorylation discovered using ETC poisons and artificial electron acceptors?

**finance**

A firm has $600,000 in current assets and $150,000 in current liabilities. Which of the following is correct if they use cash to pay off $50,000 in accounts payable? 1)Current ratio will increase to 5.0. 2)Net working capital will increase to $500,000. 3)Current ratio will ...

**finance**

An increasing average collection period indicates 1)the firm is generating more income. 2) accounts receivable are going down. 3) the company is becoming more efficient in its collection policy. 4) the company is becoming less efficient in its collection policy.

**Finance Management**

Suppose the population of Area Y is relatively young and the population of Area O is relatively old. Would interest rates likely be the same or different in the two areas? Explanin. Would a trend toward nationwide branching by banks and the development of nationwide ...

**math**

solve: x lnx - 30 + 5 lnx - 6x = 0

**Chem**

What is the original molarity of a solution of ammonia whose pH is 11.11 okay i tried to convert to pOH- so i got 2.89 and then to [OH]=1.288e-3 and then solve using Kb=1.8e-5 whats going wrong???

**Chemistry**

okay i dding get 48.8 i got 68...

**chem**

Describe the melting point you expect to observe if the isolated product is the mixture of both syn and anti addition of bromine.

**chem**

write a mechanism for the reaction of sodium chloroacetate with 4-chlorophenolate. - i know its a sn2 mechanism, but I don't know who to go about from here

**biology**

Can someone explain to me how 2,3 BPG works for hemoglobin? BPG affects oxygen binding affinity by binding in a small cavity at the center axis of deoxygenated hemoglobin. In oxygenated hemoglobin, this cavity is too small to effectively accommodate 2,3-BPG. When bound, 2,3-...

**College Prep**

Thank you Ms. Sue

**College Prep**

Scenerio: Two days ago your manager phoned and said he would like to plan a field contact in order to evaluate your promotional deals and marketing skills. He will meet you at Kroger's, your top account, at 2:00 p.m. You immediatly got antsy because you know how important ...

**chem**

thank you sooo much. you guys are great.

**chem**

What would be the effect of raising the temperature and increasing the carrier gas flow rate on the ability to resolve two closely spaced peaks in gas chromatography? -I was thinking that the width or the maximum peak of each curve will change since the retention time is ...

**History - School Project**

Can someone please help me think of some ideas for an invention project? We just learned about some famous inventors in history and we have to now come up with our own invention. This can be something totally new, or it can be an improvement on a previous idea (but must have 3...

**Math**

5+67=

**arithmetic**

n=(3/5)2N=

**4th grade**

1554. 6+36+216+1296= 1554

**4th grade**

1554

**physics**

Two balls are connected by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.45 kg and is held 0.74 m above the ground. Ball 2 has a mass of 5.7 kg and is held 0.88 m above the ground. When the balls are released, ball 2 falls to the ground, ...

**Physics**

Two balls are connected by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.45 kg and is held 0.74 m above the ground. Ball 2 has a mass of 5.7 kg and is held 0.88 m above the ground. When the balls are released, ball 2 falls to the ground, ...

**social studies**

what is the largest river that runs through asia

**economics**

I answered some questions. pls check if they are correct and pls help in questions e and f. Production Possibilities Possibility Maximum Units of Good A Maximum Units of Good B a 200 0 b 180 60 c 160 100 d 100 160 e 40 200 f 0 220 a. Plot these production possibilities, label ...

**math**

Tom spent (in order) a third of his life to date in the united states, a sixth in india, twelve years in egypt, half the remainder of his time in australia, and as long in canda as he spent in india. where did he spend his fortieth birthday? use an alegbraic equation to solve ...

**Math**

1)Write a quadratic equation with integer coefficients that has -4+7i(Radical 3) and -4-7i(Radical 3) as its roots. 2) Solve your answer to part 1 using the quadratic formula verifying your answer

**pre cal**

solve for x: x^(2/3)=(1/27) (2^(x)+4)/(2^x)=2 explain please

**physics**

a crane drops a .3 kg steel ball onto a steel plate. the ball's speeds just before impact and after are 4.5 m/s and 4.2 m/s respectively. If the ball is in contact with the plate for .03 s, what is the magnitude of the average force that the ball exerts on the plate during...

**chem**

which of the following could be used to dissolve a carboxylic acid into the aqueous phase? a)MgSO4 b)1.5 M HCl c)1.0 M NaHCO3 d)2.0 M Na2SO4 e)saturated NaCl I'm leaning towards choice e because you can have an aqueous solution of sodium salt and a carboxylic acid.

**English**

What does Martin Luther King mean by "Continue to work with the faith that unearned suffering is redemptive?"

**central america & the caribbean**

yea ok kool,

**central america & the caribbean**

aight then thanx

**central america & the caribbean**

word bank : belize,costa rica ,coffee, cuba,honduras,lead,mestizos,multicultural,oil,panama canal,puerto rico,rice,sugar cane, slavery,canal 2.___was introduced in the caribbean after indians died from european diseases. 3.central america is an ___between north and south ...

**CHEMISTRY**

Observations Mass of Fe metal:100 MG Volume of water in Calorimeter: 100 ML Mass of water in Calorimeter (use 1g per ml): 100G Initial Temperature of metal: 20 Initial Temperature of water: 20 Final Temperature (both metal and water): 100 Determine the heat gained by the water...

**English- vocab**

can you please help me figure out a word that means something that happens for no reason and we don't know the reason why it happens. i don't think its mystery, I'm not sure.

**chem**

Would you expect 2-chlorobutane to react faster or slower than 2-bromobutane under Sn1 conditions? Sn2 conditions?

**chem**

would you expect 2-chlorobutane to react faster or slower than 2-bromobutane under sn1 conditions? sn2 conditions? - would it slower because of the stronger bond? and it would be sn2 reaction? i'm i on the right track?

**chem**

List the experimental conditions that favor Sn1 reactions, and those that favor Sn2 reactions.

**chem**

(R)-(+)- limonene has a boiling point of 176 C. What made it possible to steam distill it at 100C? - is it because you could have different weights of each one?

**Chem**

How would you expect the following series of compounds to compare in behavior in the two tests(SN1 vs. SN2)? CH3CH=CHCH2Br (1-bromo-2-butene) CH3-C=CHCH3 l Br CH3CH2CH2Br (1-bromopropane) I know primary alkyl halides like 1-bromopropane favor SN2 reactions and tertiary alkyl ...

**math**

Using the table (ADBC)= 8 (DACB)=5 (BADC)=3 (BDCA)=1 (DCAB)=2 (it is supposed to be a table but the table won't paste correctly). Deter mine: a) deter mine the winner using the Borda count b) deter mine the winner using the Hare method? What round did you find an answer? ...

**math**

Sorry that did not come out good. Let me try again. In voting of 4 candidates, the outcomes are recorded as: (ADBC)=8 (DACB)=5 (BADC)=3 (BDCA)=1 and (DCAB)=2. It is supposed to be a table but it didn't copy. Using this table, determine: a)what is the total number of votes ...

**math**

(ADBC) (DACB) (BADC) (BDCA) (DCAB) 8 5 3 1 2 Using that table, determine: a) the total number of votes b) what does (ADBC) mean c) What the "8" mean d)how many votes will be necessary for a majority, why? is a)19 b) rank c) the number of votes d)?

**chem**

An optical rotation study gives a result of alpha=+140 degrees. Suggest a dilution experiment to test whether the result is indeed +140 degrees, and not -220 degrees. -could polarimetry experiment be used to find the r and s isomer?

**Chem**

A sample of 2-butanol has a specific rotation of 3.25. Determine the % ee and molecular composition of this sample. The sepcific rotation of pure (+)-2-butanol is +13.0. is it (3.25/13.0)x100%= 25%... i'm a little confused on the molecular composition though.

**Chem**

What determines whether 2-bromobutane undergoes an Sn1 or an Sn2 reaction how would you favor SN2 formation?

**Math**

your mom