Monday

November 30, 2015
Total # Posts: 852

**english**

An imperative sentence is to a command as a declarative sentence is to a/an A. statement. B. wish. C. question. D. exclamation. my answer is D
*November 25, 2015*

**english**

i think it's c
*November 25, 2015*

**english**

(1) Jack had been without a car since Monday. (2) The car needed a new battery, and Jack was broke. (3) Although he was embarrassed, Jack called his mother. (4) He felt he had no choice. (5) Fortunately, his mom was happy to help out. (6) She said she had the money and could ...
*November 25, 2015*

**Science **

Why the átomo never seen before
*November 25, 2015*

**Ciencias **

ocasionalmente los hospitales tienen brote de infecciones por la bacteria estafilococos la cual reciste el tratamiento con antibiótico que una vez fuera efectivo. ¿cual es la explicación más aceptable para esta situación?
*November 25, 2015*

**Ciencias**

Porque el estafiilococo es resitente a los tratamiento con antibiotico
*November 24, 2015*

**math**

when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree?
*November 15, 2015*

**math**

when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree?
*November 15, 2015*

**Stats**

The manager of Lone Star Restaurant believes that the average wait time of the Saturday evening meal is 30 minutes. To test this belief, the manager selects 50 customers at random and computes the average wait time to be 34 minutes. Assume a population standard deviation of 12...
*November 9, 2015*

**English**

Has anyone read "The Destructors" who can help me with a few questions? My questions are: The mood on "The Destructors" is best described as humorous horrific adventuresome cold In "The Destructors" Greene uses a lot of ___ in the boy's ...
*November 8, 2015*

**Language Arts**

NEVVERMIND ITS B
*November 6, 2015*

**Language Arts**

1. In which sentence is the word blander used logically? A. The cook added spices to make the food taste blander B. If you do not like hot food, you should you blander dishes C. In ordinary circumstances, hot sauce makes the food taste blander** D. The blander dishes were ...
*November 6, 2015*

**English**

lol yes thank you
*November 5, 2015*

**English**

please help me with this sentence they are many geeks already around the world.
*November 5, 2015*

**Math**

Is the simplified form of 2square root of 3 − 2square root of 3 rational Yes or No
*November 4, 2015*

**Math**

Thank you both so much I think I got it now :)
*November 3, 2015*

**Math**

How do I rewrite this as a radical expression? (3 2/3) 1/6
*November 3, 2015*

**math**

please help me with this!!! How can I rewrite this as a rational exponent? 3 square root 2^7 Thanks
*November 3, 2015*

**Math**

write the following equation in slope intercept form 3x+4y=12 I'm lost on this question
*November 3, 2015*

**sciences **

All of the____in a given array must be the same type. Element, statement, instructions, loop.
*November 3, 2015*

**English**

A verb phrase that acts as a noun is called a(n) participal adverbial infinitive gerund Which of the following is a prepositional phrase in the sentence below? (Applause came from the bleachers.) Applause came came from from from the bleachers My answers: gerund from the ...
*November 3, 2015*

**Spanish**

Thanks so much! Yes I know there's an accent, every time I try and use the computer command for that particular accent, my computer spazzes out!
*November 1, 2015*

**Spanish**

Which sentence correctly substitutes the bolded phrase? Carla compro /los anteojos de sol./ Carla las compro Carla lo compro Carla los compro Carla la compro I'm confused because it's los anteojos but I thought los was part of it, and that it doesn't make it plural...
*November 1, 2015*

**English**

Read the following line from "Not Waving but Drowning." "Poor chap, he always loved larking And now he's dead" a. detached b. pleased c. objective d. critical NOT WAVING BUT DROWNING Stevie Smith Nobody heard him, the dead man, But still he lay moaning...
*November 1, 2015*

**Algebra **

Please check my answer The domain of the following relation: R: {(−4, 8), (8, 10), (5, 4), (1, 6), (5, −9)} is a. {8,10,4,6,-9} b.{-4,1,5,8) c. {-4, 8, 5,1,5} d. no domain exists I think that it is A, Am I right? Thanks
*October 30, 2015*

**MATH**

Please help
*October 28, 2015*

**MATH**

Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last ...
*October 28, 2015*

**math**

thank you I understand now
*October 27, 2015*

**math**

Please Help
*October 27, 2015*

**math**

I'm so lost I have no idea. Please help Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. graph of line going through ordered pairs (0, 300) and (450, 0)
*October 27, 2015*

**Algebra**

Not really. I don't understand what the problem is wanting me to do exactly. Could you explain further?
*October 9, 2015*

**Algebra**

Among all pairs of numbers with a sum of 34, find the pair whose product is maximum. Write your answers as fractions reduced to lowest terms.
*October 9, 2015*

**MATH HELP PLEASE**

Find two points on the graph of the parabola other than the vertex and x-intercepts. k ( x ) = ( x − 1 )^(2) − 6
*October 7, 2015*

**Algebra**

A rectangular auditorium seats 1960 people. The number of seats in each row exceeds the number of rows by 9. Find the number of seats in each row. Thanks!
*October 6, 2015*

**algebra**

The ratio of the tens digit to the units digit of a two digit number is 2:3. The number that results when the digits of the original number are reversed is 27 more than the original number. Find the original number.
*September 27, 2015*

**math**

the sum of the ages of two siblings is 23 and the difference between their ages is 7. if frank is the older brother of beth, determine their ages by creating a pair of simultaneous equations and solving them. this is killing me i have been working on it for hours. can only us ...
*September 10, 2015*

**Physics**

PLEASE HELP! this is do tomorrow :( I have no clue how to do any of it. A plane is flying horizontally with speed 193 m/s at a height 2010 m above the ground, when a package is dropped from the plane.The acceleration of gravity is 9.8 m/s^2. 1.What is the horizontal distance ...
*September 9, 2015*

**Physics**

A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 18 m/s at angle of 58◦ above the horizontal. The top of the fence is 10m high. The kicker&#...
*September 9, 2015*

**ochm**

sodium lauryl sulfate can be prepared by replacing chlorosulfonic acid with another reagent. what could be used? show equations
*September 8, 2015*

**Pre-Calculus**

Write an equation to fit the description. 0° Celsius = 32° Fahrenheit. 100°C = 212°F. (Let x = degrees Celsius and y=degrees Fahrenheit.) y=9/5x+32 Is this correct?
*August 31, 2015*

**microeconimics**

one type of systematic error arises because people tend to think of benefits in percentage term rather than in absolute dollar amounts. as an example, samir is wiling to drive 20 minutes out of his way to save $4 on grocery item that cost $10 at local market. but he is ...
*July 10, 2015*

**math**

A fisherman has estimated that it takes 6 minutes to paint each square foot of the hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of two sides, each 31.5 feet by 8.00 feet? 1512.0 hours 25.2 hours 3024 hours ...
*June 18, 2015*

**math**

yeah :/ and I don't know which I should be them
*June 18, 2015*

**math**

Last month, Bill's electric bill was $80.77. This month, Bill's bill was $69.06. What is the percent decrease? 0.01 0.16 0.15 0.14 my answer is 0.15
*June 18, 2015*

**psychology **

The biosocial approach suggests that gender differences are based on: a. the hormone and neurological differences between men and women. b. how men and women think about their environment. c. the physical ability of men to protect the home and of women to bear children. d. the...
*June 18, 2015*

**Science**

If you have a rocket with a mass of 30.0 kg, how much thrust will be needed to have a thrust to weight ratio of 3:1?
*June 12, 2015*

**HISTORY**

COMPARATIVE STUDY BETWEEN PARLIAMENTARY & PRESIDENTIAL FORM OF GOVERNMENT .
*May 29, 2015*

**1st grade math**

When you find the factors of two or more numbers, and then find some factors are the same ("common"), then they are the "common factors".
*May 21, 2015*

**Math**

Thank you so much!
*May 17, 2015*

**Math**

Seven students are running for four junior class representative positions in the upcoming student council elections. How many different ways can the students be chosen?
*May 17, 2015*

**Math @Reiny**

Write the standard form equation for the following Ellipse. Use the information given below. Foci: (0,0) and (4,0) Major Axis of length 8
*May 13, 2015*

**Math**

For #1 it says: Major Axis of length 8 Foci: (0,0) and (4,0) I forgot to copy the next part. Sorry.
*May 13, 2015*

**Math**

1.) Write the standard form equation for the following Ellipse. Use the information given below. Foci: (0,0) and (4,0) 2.) Write the standard form equation for the following Hyperbola. Use the information below. Vertices (-2,1) and (2,1) Foci: (-3,1) and (3,1)
*May 13, 2015*

**physics**

help pls. i need to find the best animation of the movement of electrons and protons... the best one... pls send me the link. thanks so much.
*April 24, 2015*

**Calculus**

how can you find the bounderies given by the curve x=4sqrt(y) and y=4sqrt(x)? show your solution please. thanks to anyone who will notice this!
*March 30, 2015*

**genetics**

Wild type, or wt, refers to the genotype that is the typical genotype found in nature. True False
*March 22, 2015*

**genetics**

Auxotrophs are organisms that can grow: A.on minimal media. B.only with sunlight. C.only on amino acid supplemented media. D.only on vitamin supplemented media. E.on any media.
*March 22, 2015*

**genetics**

Though this question sucks, which enzyme elongates the new DNA strand starting at an RNA primer? A.DNA polymerase I B.DNA polymerase III C.DNA polymerase II D.DNA ligase E.RNA polymerase
*March 22, 2015*

**genetics**

The two most basic steps of DNA replication are: A.primase causes primer to bind the template and ligase copies the template. B.helicase unwinds the template and DNA polymerase binds the template. C.leading strand is copied first and lagging strand is copied second. D.the new ...
*March 22, 2015*

**genetics**

What is a replication bubble? A.A complex of replication enzymes on the DNA template strand B.A DNA sequence that initiates replication C.A tangle of denatured DNA strands near the replication fork D.A locally denatured segment of DNA where replication originates E.A localized...
*March 22, 2015*

**genetics**

In E. coli, replication begins at which chromosome site? A.The replication fork B.Hfr C.oriC D.TATA box E.Pribnow box
*March 22, 2015*

**genetics**

The definition of transformation is: A.the shift of genetic information from DNA to protein. B.the recombination of DNA strands during meiosis C.the uptake of genetic information by a cell from the environment. D.the combining of DNA during fertilization. E.the changes caused ...
*March 22, 2015*

**genetics**

Antiparallel means that: A.the two polynucleotide chains run in opposite directions. B.each DNA molecule consists of one old and one new strand. C.opposite strands are held together by base pairing. D.the helix twists to the right. E.there is complementary base-pairing
*March 22, 2015*

**genetics**

complimentary base pairing allows for: A. spontaneous mutations to occur B. genes to be expressed as a phenotype C. DNA to serve as its own template for replication D. covalent bonds to form between the opposite bases E. The equalization of the purine and pyrimidine content of...
*March 22, 2015*

**genetics**

Which of the following are the purine nucleotides in DNA? A.Adenine and thymine B.Cytosine and guanine C.Adenine and cytosine D.Guanine and adenine E.Thymine and uracil
*March 22, 2015*

**genetics**

I PCR out a mutated gene in a patient with Lisenbee chorea (the inability to dance in a coordinated fashion) and I compare it to another patient with that same disease phenotype. One subject had a mutation on chromosome 4, and the other subject couldn't rock it because of...
*March 22, 2015*

**genetics**

With PCR, one gene is all that is necessary to create a useful genetic fingerprint to discriminate between individuals. True False
*March 22, 2015*

**genetics**

DNA markers, or variant non-coding regions of DNA, are DNA polymorphisms that are useful for genetic mapping. True False
*March 22, 2015*

**genetics**

DNA is often purified by DNA electrophoresis, like in old-school DNA sequencing. In DNA electrophoresis, fragment separation is based on _____. (Best answer) A.fragment charge. B.fragment size. C.fragment sequence. D.fragment G-C content. E. fragment A-T content.
*March 22, 2015*

**genetics**

Which of the following does not occur during the PCR reactions? A.Changes in the reaction temperature by a thermocycler B.Denaturation at high temperatures C.Synthesis of oligonucleotide primers D.Extension of primers by DNA polymerase E.Annealing of oligonucleotide primers
*March 22, 2015*

**Genetics**

Question 12 An Hfr strain with the genotype cys+ leu+ met+ strS is mated with an F- strain carrying the genotype cys- leu -met- strR . In an interrupted mating experiment, small samples of the conjugating bacteria are withdrawn every 3 minutes for 30 minutes. The withdrawn ...
*March 22, 2015*

**genetics**

kernel phenotype Number colored, shrunken, starchy 116 colored, full, starchy 601 colored, full, waxy 2538 colored, shrunken, waxy 4 colorless, shrunken, starchy 2708 colorless, full, starchy 2 colorless, full, waxy 113 colorless, shrunken, waxy 626 total 6708 Researchers ...
*March 22, 2015*

**Genetics**

The boss in your laboratory has just heard of a proposal by another laboratory that genes for eye color and the length of body bristles may be linked in Drosophila. Your lab has numerous pure-breeding stocks of Drosophila that could be used to verify or refute genetic linkage...
*March 22, 2015*

**genetics**

In tomatoes, the allele T for tall plant height is dominant to dwarf allele t, the P allele for smooth is dominant to the p allele for peach fuzz skin, and the allele R for round fruit dominant to the recessive r allele for oblong fruit. The genes controlling these traits are ...
*March 22, 2015*

**Chemistry**

How much time is required for a sound to travel 1 mile if the air temperature is: 0.0 Degrees Celsius 20.0 Degrees Celsius 40.0 Degrees Celsius 80.0 Degrees Celsius
*March 12, 2015*

**Chrmistry**

How many grams of hydrogen gas be produced from the reaction of 3 g of magnesium with 4 g of hydrochloric acid. identify the limiting in excess reactants. Please help btw that's the exact question.
*March 8, 2015*

**Science**

What will the sound of speed be in air if temp is 10 degrees Celsius.this is crickets looking for e plantation on equation
*March 4, 2015*

**Algebra 2**

The length of a rectangular window is 5 feet more than its width, w. The area of the window is 36 square feet. Write an equation to represent the area of the window. Please have your final equation equal to zero.
*February 20, 2015*

**statistics**

I am trying to figure out how the answer of 0.989 came from the following equation of correlation. 7(-5)-(25)(13) _______________________ /7(127)-(25)*/x/7(71)-(13)*
*January 23, 2015*

**Calculus**

Evaluate each telescoping sum: 1) Sum from i = 1 to 100 of (5^i - 5^(i-1)). I know that I could apply the (n(n+1))/2 summation rule to the 5^i part of the question and then plug in 100, but I am unsure what to do for the second half --> -5^(i-1)! Thank you for any help!
*January 9, 2015*

**Chemistry**

Thank you very much!!!
*January 6, 2015*

**Chemistry**

100lbs x453.6g/lbs = 45360grams 45360 grams x 1mol/18.02 g= 2517.2 moles 2517.2mol x 6.01kj/mol = 15128.4kj 45360 grams x 4.18j/g C x 100C x 1/1000 = 18960.5 45360g x 1 mol/ 18.02g x 40.6 kj/ mol = 102198kj All added equals 136287 kj 2.54E4 J /1g x #g = 136287 kj #g= 5.36 kj
*January 6, 2015*

**Chemistry**

How do I send a picture of my work here?
*January 6, 2015*

**Chemistry **

The heat of combustion of bituminous coal is 2.5 x 10^4 J/g. What quantity of coal is required to produce the energy required to convert 100. Pounds of ice at 0.0 degrees Celsius to steam at 100.0 degrees Celsius? Is the answer 5.36 about right. I'm not sure if I did it ...
*January 6, 2015*

**Physics**

An object has a volume of 4.0m^3 and weighs 40,000 Newtons. What will be its weight in water?
*January 6, 2015*

**physics**

The small piston of a hydraulic lift has a diameter of 8 cm and its large piston has a diameter of 40cm. The lift raises a load of 15,000 Newtons. A. Determine the force that must be applied to the small piston. B. Determine the pressure applied to the fluid in the lift.
*January 6, 2015*

**Chemistry**

Does an answer around 5.36563 kg sound about right? After adding q1+q2+q3 I got 136287 kj so I converted that to J and then found the #g coal to be 5.36563 kg.
*January 5, 2015*

**Chemistry **

The heat of combustion of bituminous coal is 2.5 x 10^4 J/g. What quantity of coal is required to produce the energy required to convert 100. Pounds of ice at 0.0 degrees Celsius to steam at 100.0 degrees Celsius?
*January 5, 2015*

**physics**

all i was need a formula
*January 4, 2015*

**physics**

a pendulum 3m long is displaced at an angle of 40 degrees. What will be the maximum velocity of the pendulum when it is released to oscillate?
*January 4, 2015*

**physics**

a car rolls down a ramp 4m long that has angle of incline equal to 37 degrees. If the car starts from rest, what will be its velocity at the bottom of the ramp?
*January 4, 2015*

**physics**

e. J-s
*January 4, 2015*

**Chemistry**

Are there any structural isomers of hydrocarbons from methane to decane have 3 stereogenic C atoms? (i know that there are none for decane itself, but I am wondering about the others before it.) Thanks in advance!
*December 13, 2014*

**Physics**

A roller coaster goes 40-m along a section of track sloping 10 degrees below the horizontal, followed by a 13-m section sloping upward at 6 degrees, followed by an 26-m section of level track. Find the net displacement in m.
*December 7, 2014*

**Calculus**

A sherman is in a rowboat on a lake and 3 km from shore. He wishes to reach a store 2 km down the (straight) shore. He can row at 5 km/h and run at 13 km/h. To what point down-shore should he row to get to the store as quickly as possible? 8. The cross-section of a tunnel
*December 3, 2014*

**Calculus**

For f(x)= (x+3)^2/(4x-5) find all x such that f(x) increases.
*November 22, 2014*

**CIS**

or nah
*November 21, 2014*

**Calculus - PLEASE HELP!!**

For any real number x there is a unique integer n such that n≤x<n+1, and the greatest integer function is defined as ⌊x⌋=n. Where are the critical values of the greatest integer function? Which are local maxima and which are local minima?
*November 17, 2014*

**Physics**

You have a tanker that is filled with olive oil, which total mass = 200 kg. The tanker is in the shape of a rectangular box w/vertical sides and a horizontal cross-sectional area 0.9 m^2. How deep a swimming pool do you need so that the tanker doesn't hit the bottom?
*November 16, 2014*