Saturday

December 3, 2016
Number of results: 178,475

**Calculus - please check my work**

Differentiate each function a) y = -3x^2 + 5x - 4 b) f(x) = 6/x - 3/(x^2) c) f(x) = (3x^2 - 4x)(x^3 + 1) the answers i got for each was: a) y'= -6x + 5 b) f'(x)= -6/x^2 + 6/x^3 c) f'(x)= 15x^4 + 6x - 16x^3 - 4 please double check and let me know if these are correct, thank you.

*June 18, 2012 by Henry*

**Math**

Please double check Jean deposited a check for $625, wrote two for $68.74 and $29.95 and used her debit card to pay for a purchase of $57.65. How has her account balance changed? Answer: $468.66

*March 18, 2008 by Kim*

**math (please double check my answers)**

4. Prove: 2^n + 2^n = 2^n+1

*May 27, 2012 by christina*

**double check me please. math 012**

4(5-w)=-w _________ 3 this is a fraction with 3 being on the bottom. do you come up with w=20? thanks

*February 1, 2009 by amy*

**Honors Chemistry (check answers)**

On a worksheet we got, we have to balance out chemical reaction equations then define what kind of reaction it is (synthesis, decomposition, single/double-replacement). Would someone be willing to check my answers, please? Thanks!! 1. c) BaO + H2O ==> ________ (synthesis...

*October 26, 2009 by Emily*

**Math**

Tim is a first grader and reads 28 words per minute. Assuming he maintains the same rate, using the double number line to find out how many words he can read in 5 minutes. Words 0 28 --- --- ---- ---- Minutes 0 1 5 This is basically completing I assume a ratio table. So my ...

*September 20, 2016 by Matt-Please Help*

**Math**

Please double check me. Terry went on a 60 mile canoe trip. on first day, he traveled 21 miles. what percent of the total distance was that? 35%

*March 30, 2010 by Amy*

**Math**

Please double check me. Brett saved $670 at the bank. he want to save $3800 for a trip to disneyland. what percent of his goal has been reached? 17.6%

*March 30, 2010 by Amy*

**Algebra**

Could you double check my math problem please? Thanks 4) −15 + n = −9 MY ANWSER: 6. Thank you :)

*December 11, 2014 by HEY*

**Math**

5 1/2 x 3 1/3= 11/2 x 10/3= 110/6 110/6=18 2/6 Please double check the answer thank you

*February 17, 2016 by Patrick*

**math (please double check my answers)**

Simplify the following using the laws of exponents: Need help with these: a) (9)^1/2 x 4^2/24 b) 16 x 2^x+2 Simplify each of the following: b) b) 3 sqrt x^1/4 sqrt x/ 5 sqrt x^2 c) (ab)^2x+y /a^x b^y Need these answers double checked: c) 3^-8/3^-6 x 3^-5 3^-8/3^-6+-5 3-8^ 3^-...

*May 27, 2012 by noel*

**Computer Science (java1)**

can someone please tell me the equation for compshift? double Angle = 45.0; double AngleRadians; double ComptonShift ; //calculations AngleRadians = Math.toRadians(Angle); ComptonShift = Helpppp here

*March 14, 2012 by Nick*

**Quick English check**

The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do. please correct me if I'm wrong! 5. He removed the picture from ...

*September 7, 2014 by Anonymous*

**Math- Please check**

Please double check me Find the median of the following set of numbers 47,20,52,35,58,57 a. 49 1/2 b 47 c 48 1/2 d 52 Answer: a Which of the following numbers are integers? 2/3, 35, 0.093,-650, 42.5 a 0.093 and 42.5 b 35 and -650 c 2/3 d -650 answer: c

*March 23, 2008 by Sherri*

**Math- Please check**

Please double check me Find the median of the following set of numbers 47,20,52,35,58,57 a. 49 1/2 b 47 c 48 1/2 d 52 Answer: a Which of the following numbers are integers? 2/3, 35, 0.093,-650, 42.5 a 0.093 and 42.5 b 35 and -650 c 2/3 d -650 answer: c

*March 23, 2008 by Sherri*

**CHemistry....Please double check DrBobb**

What mass of ethylene glycol C2H6O2, the main component of antifreeze, must be added to 10.0 L water to produce a solution for use in a car's radiator that freezes at -23C? Assume density for water is exactly 1g/mL. First we find out the freezing point: =(-23.0)-(0.0_ =-23.0 ...

*January 24, 2009 by Saira*

**math**

please check my answer thanks :) What is Eric's gross pay , including overtime and double time He earns $9.24 per hour He gets time and a half for over time and double time for work on Saturday He worked 52 hours this week, with 8 hours overtime and for hours on Saturday $9.24...

*November 14, 2007 by Anonymous*

**Calculus (double check my anser please)**

Evaluate integral e^3x cosh 2x dx. A.1/2 e^5x + 1/2 e^x + C B.1/10 e^5x + 1/2e^x + C<<< my answer C.1/4e^3x + 1/2 x + C D.1/10 e^5x + 1/5 x + C

*March 13, 2011 by anon*

**math(Please please help!!!)**

1) initial investment = $600 annual % rate = ? time to double = ? amount after 10 years = $19,205.00 19,205 = 600e^(10r) I do not know how to solve for r of find the time to double.

*February 8, 2010 by Hannah*

**Math**

What is the best estimate for the quotient. 5,397 division sign 62 a. 80 b. 90 c. 800 d. 900 My answer to the above is b Can you please double check my answer and let me know if I am right or wrong

*February 16, 2016 by Patrick*

**math**

Use the distributive property to write an expression that is equivalent to the example below: 5(2x + 7) I think my answer is... 45.....How I got this answer was 5 x 2 + 5 x 7=45 10 + 35 = 45 Can you please double check my work?

*November 25, 2016 by Donald*

**algebra**

Of the two fractions 15/21 and 19/17 which is smaller? I think its 19/17 but need someone to double check please.

*May 30, 2012 by tony*

**Math**

Can someone please check my answers below for accurateness? The instructions are: Differentiate and simplify. 1) y=(2x^2+3x-1)(3x^2-5x-3) y'=(4x+3)(3x^2-5x-3)+(2x^2+3x-1)(6x-5) 2) y=(5x^2+3x-1)(3x^2-5x-3) y'=(10x+3)(4x^2-3)+(5x^2+3x-1)(8x) 3)y=6x^3-7x^2+5x-7+x^(5/3)-7/(x^3) y...

*August 7, 2009 by Christine*

**Calculus (double integral) PLEASE HELP!**

Evaluate double integral ln((x-y)/(x+y)) dy dx where the double integral region is the triangle with vertices (1,0),(4,3), (4,1). Hint: use a transformation with the Jacobian.

*February 8, 2016 by David*

**Math- Double check**

Please double check me Find the median of the following set of numbers. 47, 20, 52, 35, 58, 57 A) 49 1/2 B) 47 C) 48 1/2 D) 52 Answer: c Which of the following numbers are integers? 2/3, 35, 0.093, -650, 42.5 A) 0.093 and 42.5 B) 35 and -650 C) 2/3 D) -650 Answer: A Determine ...

*March 23, 2008 by Kim*

**graphing-reposting**

It looks like a double ski ramp...going down, min, then up, then way down to the bottom of the hill, then up slightly, then down. The first minimum is greater than the small rise at the bottom Sketch the graph of a differentiable function y = f(x) with this property: A local ...

*November 6, 2006 by bobpursley*

**Science**

1) Which of the following is true about photosynthesis? A. It is an exothermic reaction B.It is a endothermic reaction ***** C.It produces carbon dioxide D. It occurs in animals 2) Atomic Theory is A.Subject to change if new information is discovered B.A solution to the ...

*November 11, 2015 by noname*

**Math**

2 divided by 4/4=8 2. 1/7 divided by 3=1/21 3. 4 divided by 1/5=20 Can you please double check the above.

*March 3, 2016 by Patrick*

**Quick English check**

The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do. please correct me if I'm wrong! 5. He removed the picture from ...

*September 7, 2014 by Anonymous*

**Quick English check**

The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do. please correct me if I'm wrong! 1. He removed the pictures from...

*September 8, 2014 by Anonymous*

**Quick English check**

The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do.) *** Some may not have DO*** please correct me if I'm wrong! 1...

*September 7, 2014 by Anonymous*

**Math**

75 + -63 + 7( 115/ -5 + (-8)2 ) -63 is -6 to the third power and (-8)2 is (-8)to the 2nd power. I got 15913 I think that that is wrong and my calculater wouldn't fit all the numbers so I don't know how to check it! Can you please try it so I can double check answers? it is ...

*October 29, 2006 by Lanna*

**ENGLISH**

A little old fool but doesn't bath. Who can it be? This doesn't make any sense at all. Please double-check. ?? open-ended introductins

*September 12, 2006 by Ayra*

**English check**

The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do.) *** Some may not have DO*** please correct me if I'm wrong! 1...

*September 7, 2014 by Anonymous*

**math**

solve 9x<-27 I did 9x/9<-27/9 x<-3 Just a double check. I believe this is right Thanks

*January 2, 2013 by es*

**Physics**

Consider the following four possibilities for two point charges and choose the one(s) that do not change the magnitude of the electrostatic force that each charge exerts on the other: A. Double the magnitude of each charge and double the separation between them. B. Double the ...

*July 18, 2012 by Patrick*

**History**

One way that opposition to civil War was suppressed was the denial of the right of_________ I think it is assembly, just trying to double check please.

*September 28, 2011 by Jamieson*

**(Please help) Math**

1) initial investment = $600 annual % rate = ? time to double = ? amount after 10 years = $19,205.00 19,205 = 600e^(10r) I do not know how to solve for r of find the time to double.

*February 9, 2010 by Hannah*

**Chemistry(Please check)**

Classify the following as ether, ketone, ester, amide, etc. 1) CH3CH2CNH2 !! O The !! represents a double bond and it is below the CN I think this is an amide. 2) CH3COCH3 !! O The doube bond is below the CO I think this is an ester. 3) CH3CCH3 !! O The double bond is below ...

*September 12, 2012 by Hannah*

**Math**

Write each rate as a unit rate. 180 passengers in 16 buses 180/16=11.25/1 11.25 passengers per bus Could you please double check my answer to see if I have it right.

*September 21, 2016 by Matt-Please Help*

**Language Arts Mr Reed**

Hello Mr. Reed, Can you please double check my answers that I posted at 1:38pm and 1:45pm Thank you for your assistance

*October 29, 2015 by Patrick*

**Math(Please check)**

You invest $3000 in a savings account where you earn 4% interest compounded continuously a) what is the formula A(t) for the balance after t years? A(t)=3000e^0.04(t) b) How long will it take for the money to double? 6000=3000e^0.04t Is this the correct setup so far or would I...

*April 29, 2011 by Hannah*

**Math Check please**

Will you please check my work for me. 1)The equation of a parabola is shown. y=1/14X^2. What are the coordinates of the focus? (0,3.5) <---- (0,-4) (0,7) (0,-3.5) 2)The equation x2 + (y + 3)2 = 36 models the boundary on a local map for which Darren can hear his friend Tom ...

*June 18, 2012 by Anonymous*

**Math**

Im going to try another percentage problem. Will you please double check me. Thanks for all your help! 2580/4440=.581081081 Change to percent and round to nearest tenth. .581081081*100=58.108 rounded to nearest tenth is 58.1%

*March 31, 2010 by Amy*

**7th grade math check**

Ok I was wondering if you could check these 3 problems please. I am suppose to set these equations equal but I am not sure if did them right. I think I accidently solved these systems as substitutions. The answers are suppose to be in coordinate pairs. 1) x - y = 11 -3x + y...

*April 12, 2012 by saranghae12*

**math**

Initial Investment?? Annual % Rate= 8 Time to Double?? Amount after 10 years= $20,000 I don't know how to figure out the initial investment and the time to double help me please?

*November 27, 2010 by holly*

**Math 157**

Can someone please help me. At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a ...

*December 8, 2010 by Rena *

**math**

Can I double check this I'm not entirely sure if my answer is correct. What is the smallest perfect square that has a factor of 90. 8100?

*November 24, 2016 by Maryam*

**To sam!**

Was the five part unknown question for compounds A through E yours? If so, did you get it answered ok? no it was not mine! can you please check my math? can you please check my math?

*December 4, 2006 by DrBob222*

**Math**

Can someone please help me. At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a ...

*December 8, 2010 by Rena *

**math 012**

will someone please double check my answer to this problem. the answer i get is a fraction, but not sure how to type it on here. 4(4y+2)=2(1+6y)+8 16y+8=2+12y+8 16y+8=10+12y -16 -16 8=-6+12y +6 +6 14=12y divide both by 12 and that leaves y=14/12 then reduce down to 7/6 is this...

*February 1, 2009 by amy*

**Math**

Write each percent as a fraction and as a decimal. 7. 72% full 72/100 or .72 9. 500% increase Would it be 500/100 or 500/1000? .500 11. 37% profit 37/100 and .37 Please be so kind as to double check my answers and explain to me if I got anything wrong so I can get a better ...

*October 24, 2016 by Donald*

**language art CHECK**

Will somebody please check this for me and see if i used the words correctly please? Having spent many years as political opponents, the two senators have developed a(n)MUTUAL respect for each other. Please check if it is correct. thank you

*January 17, 2012 by saranghae12*

**math-4th grade**

12+2/2+4= just want to double-check: first we must do the 2/2 as the multiplication and division is affecting the number directly before it.. so 12+1+4=17

*February 11, 2016 by Anonymous*

**math 012 double check me please**

9x+3(x-4)=10(x-5)+7 9x+3x-12=10x-50+7 12x-12=10x-43 subtract -12 from both sides and that leaves -12=-2x-43 add 43 to both sides and that leaves 31=2x then the answer is x=31/2 (a fraction) im so confused and its even harder trying to type it out and not confuse anyone reading...

*February 1, 2009 by amy*

**CHEMISTRY**

which of the following elements would have the highest melting point?> a)K b)Mg C)Na D)al e)Ca Calcium would have the highest, follwed by aluminum, magnesium, sodium, lowest melting point-potassium. Please double check thank you i found that you are correct with the melting...

*April 23, 2007 by ISA*

**Math 116 algebra please check**

Solve using the multiplication principle. 10x= -90 The solution is x = -9 please check

*July 16, 2008 by jay jay*

**Chemistry**

What are the major organic products of this reaction: CH3CH2CH2COCH2CH3 (an O is double bonded to the C before the O) + H2O --> (acid is above the arrow) DrBob222- There are 2 oxygens. I said there is an O double bonded to the C. So there is the O after the single C and ...

*March 21, 2010 by Bobby*

**Math (Check)**

The equation y = a^x is a decreasing function a = 1) 1 2) 2 3) -3 4) .25 I think that the correct answer is 3) -3...but I am not sure why? Can anyone please check if I am right and explain why? Please....Thank you for your help!!!

*March 9, 2009 by jess*

**Math 116 algebra please check**

Solve for the indicated letter. e=9f, for f The solution is f = 1/9e Please check this

*July 16, 2008 by jay jay*

**math-please check my answer**

0.6x + 4 < 1.0x - 1 6x + 40 < 10x - 10 4x > 50 x > 12.5 can someone please check my work and tell me if I am right?

*July 30, 2010 by Michelle*

**Math[PLease Check]**

Problem: 25-x^2 6 ------ * --- 12 5-x What I got: 5-x --- 2 *PLease Check My Work. No. Factor the 25-x^2 into two factors. Then the 5-x in the denominator divides out. So then is it: 5+x --- 2 yes. 12x12

*February 24, 2007 by Margie*

**math**

Double check please Write each of the following as a common fraction or mixed number. Write your answer in lowest term 28. 15.35 Answer: 1535 / 100 = 307/20 = 15 35/100 is 15 7/20 Complete each of the following statement, using the symbol < or > 5/16 _0.313 Answer >

*February 20, 2008 by DJ*

**chemistry**

hi, Can you please double check to see if i have got this right? Is the empirical formual for oxide of arsenic As2O5? Cheers ;) Arsenic forms two oxides with oxygen. One is As2O5, the other is As2O3. I'm glad you posted today; please tell your friend you were talking with ...

*February 7, 2007 by bertie*

**Math**

Write an expression for this statement: Double 5, then add 63. I don't understand double 5. Does it mean 5 to the 2nd power or 5 +5?

*April 2, 2016 by Susan*

**Physics[CONCEPT- NO MATH]**

F = G(m1 x m2)/(d)^2 If you double the mass of one object and double the distance between the center of the two objects what happens to the force? If you double the mass of each object and double the distance between them what happens to the force?

*December 4, 2012 by Michael*

**physics**

A 10.8 kg block of metal is suspended from a scale and immersed in water, as in the figure below. The dimensions of the block are 12.0 cm 10.4 cm 10.4 cm. The 12.0 cm dimension is vertical, and the top of the block is 5.00 cm below the surface of the water. (a) What are the ...

*November 10, 2012 by Kat*

**Math**

computing grades. the fith test counts as double ( and i got the answer 74, so how much would it be as double?. thanks!

*March 30, 2010 by Joe*

**math**

what is the answer to this question? I just want to double check my answer that I wrote on a test? (3a)^1/2 x (3a)^-1/2

*June 12, 2015 by Anonymous*

**Math**

Molly has 15 marbles in a jar. What is the ratio of black to white marbles? There are 8 black marbles and 7 white marbles. A. 7:8 B. 7:15 C. 8:7 D. 8:15 My answer would be C Can you please double check my answer and tell me if I am right or wrong.

*September 28, 2016 by Matt*

**Math 116 algebra please check**

Simplify 6[-73-(-19-83)]=174 Please check

*July 16, 2008 by jay jay*

**math**

Just want to double check please... Susie has two children, Mary and Jake. Given that Susie has Alzheimer’s and there’s a 25% chance that she passed the Alzheimer’s gene onto her offspring, what is the probability of BOTH Mary and Jake developing Alzheimer’s, based on ...

*September 12, 2016 by Danielle*

**chemistry/please double check**

Hi, I just need to know if I finally got this exercise right. Calculate the amount of heat in kilojoules released when 50 grams of steam at 125 Celsius are converted to 50 grams of ice at -125 Celsius. so, qw= 50*4.184J/g C (125 C-o)= 26.15 x 10^3 qi= 50*2.09*(-125)=-13.065 KJ...

*October 28, 2008 by Joshua*

**English, grammar**

I need some help with this question for one of my units in world englishes please help!? Q. Argue for or against the status of 'double negation' as a 'mistake' on spoken English. I am arguing for so I agree with this status. I believe double negation in spoken English can ...

*August 28, 2013 by Anonymous*

**Java programming**

List all overloading methods (including constructors) in this coding.. public class Circle { private double radius; private String colour; public Circle() { radius = 0; colour = ""; } public Circle (double r) { radius = r; } double getRadius() { return radius; } double getArea...

*April 16, 2013 by nina*

**Math**

In one school, 5/6 of the sixth graders take a foreign language. Of these students 2/5 take French. What fraction of the sixth graders take French. Answer: 5/6 x 2/5=25/30 + 12/30=37/30=1 7/30 Can you please double check my answer to see if I got it right.

*September 11, 2016 by Matt*

**math**

what is a double factor? I am filling in a multipication table. I am sopposed to color the double factors red. i realy need help in multiplacation and division.

*January 18, 2007 by alex*

**Math**

There are 72 boys and 90 girls on a math team. For the next competition, Mr Johnson would like to arrange all the students in equal rows with only girls and only boys in each row. What is the greatest number of students that can be in each row? Answer: 72 + 90=162 162/2=86 Can...

*September 9, 2016 by Matt*

**Chemistry(Please check)**

Last question, I just want to make sure I understand the concept of hybridization. For carboxylic acid the hybridization is: CH3= sp3 because there are only single bonds COOH= Sp2 because the oxygen is double bonded to the C Is this correct? Thank you for checking my work!

*September 12, 2012 by Hannah*

**Math 116 algebra please check**

Multiply 1/7×(-3/7)=-3/49 Please check

*July 16, 2008 by jay jay*

**Math (Earning Money)**

I know that calculating overtime rate for time and a half is 1.5 and double time is 2 and triple is 3 and so on... however my HW math question said "he is paid DOUBLE TIME AND A HALF on Saturdays..." So what number will I multiply with the number of hours and normal pay rate ...

*February 3, 2012 by CrissyXD*

**social studies**

how did women help prepare for the civil war??? i cant find in s.s book you should double check your book. if you cant find it in there you could use the internet, but i would check the book

*March 1, 2007 by avery*

**Algebra**

Factor (m + 4) (a – 5) + (m + 4) (a + 3) I am pretty sure its this but want to double check! Thanks! (m + 4) (a^2 – 2)

*April 2, 2009 by Kim*

**Math**

If it costs $75 to buy 3 video games, how much money will Jordan need if he wants to buy 12 video games? $75.00/3 video games=$25.00 for 1 video game $25.00 x 12 video games=$300.00 for 12 video games Can you please double check my answer to see if I got it correct. Thank you

*October 4, 2016 by Matt*

**Math Help Please**

How long will it take for prices in the economy to double at a 6% annual inflation rate? Round to the nearest hundredth. Please explain how to solve this problem, thanks.

*October 17, 2009 by Sara & Anonymous*

**Math, please check work**

find the other endpoint of a line segment with the given midpoint and one endpoint. Endpoint: (0,0) midpoint: (4, -3) I would Double the midpoint and add on the endpoint The other endpoint would be (8, -6) is this correct?

*December 17, 2009 by Lyndse *

**Algebra2 (Please Check My work)**

Will you please check my work for me. 1)The equation of a parabola is shown. y=1/14X^2. What are the coordinates of the focus? (0,-3.5) <---- (0,-4) (0,7) 2)The equation x2 + (y + 3)2 = 36 models the boundary on a local map for which Darren can hear his friend Tom on his ...

*June 18, 2012 by Anonymous*

**Math please check answer**

please check my answer :) The monthly payment of a $100,000 mortgage at a rate of 8 1/2 % for 20 years is 8678.23

*January 10, 2008 by keleb*

**Math**

Grass can grow up to six inches in a week depending upon temperature, humidity, and time of year. At this rate, how tall will the grass grow in 24 days? My answer: 7 days x 6 inches=48 inches in 24 days Can you please double check my answer or let me know if I did something ...

*September 20, 2016 by Matt-Please Help*

**calculus**

derivative of y=ln x/x^2 can someone double check the answer 1-2lnx/x^3

*November 11, 2009 by jackie*

**asu**

calculus problem is u = 7i +9j + 2 k and v = -7i -9j - 2 k. and my ans is -135 how to double check

*December 31, 2011 by linda*

**Math Please Check**

Please check my answers! Thank you! Simplify the following expressions. Collapse “x” terms, and/or simplify fractions and exponents. 1.) (12/5) / (36/20) = 4/3 2.) x^13*x^3 = x^16 3.) x^4 / (x^2)^3 = 1/x^2 4.) x^-3 / x^2 = x^-5 5.) (x^2-8x+16) / (x-4) = x-4 6.) x^(-1/3) / ...

*May 18, 2015 by Erin*

**math check**

Would some please check these and see if I am doing them right thank you 1. Gasoline is about $2 per gallon. You use about 1 1/2 gallons each day driving to and from work. How much should you budget for gasoline over the next month (about 20 workdays)? Answer 1 1/2 x $2.00 = $...

*January 5, 2007 by tara*

**Math-Statistics-please doublecheck my answers**

In the fall of 2000, 54% of the almost 34,000 first-year students attending one of the California State Universities had strong enough math skills to take an entry level course. 1)Based on a sample of 20 students, can we assume our calculations will be accurate? My answer is: ...

*January 31, 2012 by Mandy*

**Urgent Math please check**

Very Important I can get someone to check these for me... I have to get an A, and I was wondering if someone could double check these for me. I am about 95% sure they are right, but just need a fresh set of eyes. I know I've been sending alot, but I really need them to be ...

*April 2, 2011 by Brittany*

**Biology**

I know it is a bit long and maybe difficult, please help me to answer these.. 1) I have pET28a with insert inside. Insert is 400 bp in size. I want to check my insert with both single digestion and double digestion. I already isolated my plasmid but i do not know the next ...

*March 31, 2014 by Restriction Enzyme Digestion*

**third grade math**

how do you check addition problems by adding up? Let's use this addition problem as an example. 21 35 ___ First you add 1 + 5. To check your work, add up, 5 + 1. If you have a column of numbers and you go down each column to add them together, that's normal, right? 36 95 15 ...

*January 7, 2007 by zeke*

**Math**

How do I simplify this: (The ^ symbol means 3) -3(12)-{5(-4)-2^ I tried it,and got-8,however when I rechecked my work I got -64. Please help! Please help! where is the other } in the equation? And ^ means to the power so -2^3 would be minus 2 to the 3rd power. Please rewrite ...

*March 2, 2007 by Janese*

**Chemistry**

if you double the concentration of HCL acid, will that double rate of reaction? i have to explain in terms of the theory of collision. Wont doubling the concentration double the rate as well?

*September 25, 2012 by Shreya*

**Math**

The local zoo has 3 lions, 4 elephants, 2 giraffes, 5 monkeys, and 2 zebras. What is the ratio of zebras to total animals? My Answer: I already know this 3x:4x:2x:5x:2x=16x So 16 total animals 16x=2 x=8 So then the ratio of zebras to the total number of animals is 8 Can you ...

*September 14, 2016 by Matt*