# 1.3 /73.814 In significant digit notation, divid, and the answer to two significant digits. I will be happy to critique your work

71,152 questions, page 85-
## capt math

to convert from ounces to pounds, you can multiply the nymber of ounces by 0.0625. express 0.0625 in scientific notation. : can you please help me express it. thanks

*asked by sasha on September 5, 2010* -
## French

Could you please check these thanks. Directions: Use with only the d form(de la, de l' des, or du) Au marché, Jean-Marc achète (1)------- pain, (2)------- jambon, (3) ------- fromage, (4)-------- fraises et (5)------- crème. Il va préparer (6)------

*asked by Lady Gaga fan on March 25, 2009* -
## Algebra

A ball was thrown into the air with an initial velocity of 72ft per second. The height of the ball after t seconds is represented by the equation h=72t-16². The graph of the function is shown to the right. It says to describe the dependent variable for

*asked by John on January 21, 2016* -
## math

please help 5*10(-8 is a power for the ten) That would be 0.00000005 (seven zeroes after the decimal point) in decimal form. Do you have some other question about that number? Most of us would prefer you write that number as 5*10^-8 when typing

*asked by angel on November 24, 2006* -
## biology

You need a 5 microgram glucose/ml aqueous solution, but the lab balance is accurate to only 0.01g (ie., it displays 2 digits to the right of the decimal point) Describe 2 methods by which you could accurately prepare this solution using the lab balance. I

*asked by alex on September 4, 2013* -
## Algebra 2

1. Find the midpoint and the distance between the points (8,–6) and (13, 4). 1. (4, –3), 10 units 2. 3. 4. (10, –1), 9 units 2. Find the vertex and the focus of the parabola with the equation 4y = x2 – 12x + 52. 1. V(6, 4), F(6, 5) 2. V(6, 4), F(7,

*asked by Ben on June 4, 2011* -
## Precalculus

Find the roots of the following quadratic equations by factoring. y=x^2+9x-36 I got (x+12)(x-3) but on the answer key it says that the answer is this, however it renames the x values with opposite values. For example, the answer on the review for it has my

*asked by Zane on September 29, 2014* -
## willimington

Draw two ER diagrams for the enterprise described below: one using standard (Chen) notation (that one is hw #2), and one using ordered pair (Merise) notation (this one being hw #3). Indicate clearly which is which. Remember to indicate keys and

*asked by virenndra on September 3, 2016* -
## English

Can some one check these? Sentence structures ; 1. In the bitter cold, (he, him) and Dad struggled to save the orange crop. My answer: Him 2. (Her and me, She and I) have joined the Shutter and Lens. My answer: she and I 3. Phil showed Danny and (I, me)

*asked by Victoria on December 11, 2012* -
## 3rd grade math

Carl shades a row on a multiplication table. The products in the row are all even. The ones digits in the products repeat 0,4,8,2,6. What row does Carl shade? Now I am awful at math and don't even begin to understand this question!! Please help

*asked by Mel D on November 18, 2014* -
## math

a company purchased a lathe with a useful life of 4 years and a salavage value of $5,000.00 if the lathe cost $45,000.00 what is the lathes first year depreciation using the sum-of-the years digits method? would it be $12,000.00

*asked by unknown on November 5, 2008* -
## math please help

a company purchased a lathe with a useful life of 4 years and a salavage value of $5,000.00 if the lathe cost $45,000.00 what is the lathes first year depreciation using the sum-of-the years digits method? would it be $12,000.00

*asked by unknown on November 5, 2008* -
## math

If in the number 4315 the digits representing tens and thousands were interchanged, the value of the new number formed in relation to the original number would be... explain it out please A.unchanged B.280 more C.280 less D.2970 more E.2970 less

*asked by vincent on August 3, 2013* -
## Calculus 2 (Series)

Can anyone help me start this problem from beginning to end, along with explanations on how to go about the problem for a better understanding how to do this series problem? 1) Find the values of p for which the series is convergent. Summation notation

*asked by Sena on April 6, 2015* -
## calculus

Find the linearization of the function below at x = π/3.? y=sin(x)/x Your answer should be a linear function of x where the coefficients are accurate to at least two decimal places. You can enter π in your answer as "pi" (without the quotes). I am not

*asked by john on October 14, 2010* -
## calculus

Find the linearization of the function below at x = π/3.? y=sin(x)/x Your answer should be a linear function of x where the coefficients are accurate to at least two decimal places. You can enter π in your answer as "pi" (without the quotes). I am not

*asked by Vick on October 14, 2010* -
## Algebra

this isn't the same question as my last post!! it's the second out of three. Hello! I'm looking over one of my tests and trying to see how to do things I got wrong, but I'm having trouble with three of the questions. Here's one of them: Find the simplified

*asked by Alice on March 17, 2018* -
## math

Nicole made a pattern with numbers. 27 81 243 729 ? Which statement about the next number in the pattern is true? A.The number has 3 digits B.The number is greater than 2000 C.The number is less than 1500 D.The number is an even number A?

*asked by ♫♫Colton♫♫ on May 21, 2012* -
## Math (Complex Numbers)

Let N be the sum of all prime powers that can be written as 4^n+n^4 for some positive integer n. What are the last 3 digits of N? Details and assumptions: A prime power is a number of the form pk, where p is a prime and k is a positive integer. Examples:

*asked by Mahler on May 9, 2013* -
## Math

Consider a bowl containing 36 different slips of paper. Ten of the slips of paper each contain one of the set of digits 0 through 9 and 26 slips each contain one of the 26 letters of the alphabet. Determine the probabilities of drawing one slip, what is P

*asked by Anonymous on November 4, 2009* -
## Math

1. 1-(-3) = A. -4 B. - 2 C.2 D. 4 (MY ANSWER) 2. -9 - 2 = A. -11 (MY ANSWER) B. -7 C. 7 D. 11 3. -9 - 2 A. -14 (MY ANSWER) B. -4 C.4 D. 14 4. -64 - (-83) = A. -147 B. - 19 C. 19 (MY ANSWER) D. 29 5. the balance listed on kims bank statement was $65 in

*asked by LOVE on August 15, 2016* -
## Algebra

In 2004, about 233 million people in the US were aged 14 or older. They consumed, on average, 2.23 gallons of alcohol per person. Use scientific notation to estimate the total number of gallons of alcohol consumed by this age group. What is the formula for

*asked by Anonymous on March 12, 2012* -
## probability

This figure below describes the joint PDF of the random variables X and Y. These random variables take values over the unit disk. Over the upper half of the disk (i.e., when y>0), the value of the joint PDF is 3a, and over the lower half of the disk (i.e.,

*asked by anonymous on December 8, 2017* -
## math

Ahmad is choosing a password to access his teacher’s web page. He must choose a capital letter and three nonrepeating digits from 0 through 9. The letter can be in any position in the password. Which shows part of the sample space for Ahmad’s password?

*asked by bla on July 15, 2015* -
## MATH 157

Consider a bowl containing 36 different slips of paper. Ten of the slips of paper each contain one of the digits from the set 0 through 9 and 26 slips each contain one of the 26 capital letters of the alphabet. If one slip is drawn at random, what is

*asked by Tyga on March 29, 2010* -
## math

Consider a bowl containing 36 different slips of paper. Ten of the slips of paper contain one of the set of digits 0 through 9 and 26 slips contain one of the 26 letters of the alphabet. Determine the probability of drawing one slip, what is P (even number

*asked by m on November 22, 2010* -
## Math ~ decamals

$7.56 $8.31 +$0.28 My Answer: $16.15 643.0 2.05 10.4 +3.798 My Answer: 659, 248 296 ÷ 0.08 = 3,700(My Answer) 0.6 ÷ 0.48 = 1.25(My Answer)

*asked by Mr. Skill's101.4 on August 22, 2018* -
## ALGEBRA! URGENT. Check Answers!

1. 18x^2 + 6 + 4x - 15x^2 - 4 + 13x Answer: 3x^2 + 17x + 2 2. 3x^2 + 6 - 2x + 5x - 4x^2 + 9 Answer: -x^2 + 3x + 15 3. 3x^2 + 5x - 7x + 3 - 5x^2 + 2 Answer: -2x^2 + 2x + 5 4. In the expression -7x - 3x^2 + 5. What is the coefficient of x? Answer: I think

*asked by Claire on May 27, 2014* -
## math check

Peform each indicated operation and simplify. Can you please check my answers. Thank you. A)(x^2+2x-3)+ (2x^2-x+1) Answer: 3x^2+x-2 B) (-x^3+2x^2-5)+(x^2-x+6) Answer:-x^3+3x^2-x+1 C) (3y^2-x+7)-(y^2-2x+3) Answer:4y^2-3x+10 D)(2x^2-xy+y^2)-(-3x^2+xy+y^2)

*asked by Lauren on April 14, 2010* -
## Language Arts

Directions: Circle the correct form of negative to complete each sentence. 1. I decided that there wasn't (no, any) point in finishing the project. Answer: Circle any 2. I could name (none, any) of the singers we heard. Answer: Circle any 3. The woman left

*asked by Patrick on March 2, 2016* -
## Quadratic Functions2

Determine the standard form of a quadratic function whose graph has a y intercept of 8 and a vertex at (-2,-4). The answer is f(x)= 3x^2 + 12x +8 but I can't figure out how to get the answer. Solve x^2 + x=6, by factoring. The answer is x=-3,2 but I can't

*asked by Heaven on June 1, 2016* -
## English

Need to decide which form is needed:present participle, past, past participle of each verb in parentheses. 1. Nora (see) the toy exhibit at the museum. ANSWER=Seen 2. People (speak) French in parts of Canada. ANSWER=spoke 3. That character has (say) "Good

*asked by Ann on April 3, 2011* -
## Algebra/Math

Can you check these for me. Directions: Find the slope of the line that passes through each pair of points. 1. (3,-8) and (-5,2) Answer: -10/8 2. (-10,-3) and (7,2) Answer: -5,-17 3. (-7,-6) and (3,-6) Answer: 9 4. (8,2) and (8,-1) Answer: 0 undefined

*asked by Karen on October 17, 2010* -
## Probability

A binary communication system is used to send one of two messages: (i) message A is sent with probability 2/3, and consists of an infinite sequence of zeroes, (ii) message B is sent with probability 1/3, and consists of an infinite sequence of ones. The

*asked by John on March 6, 2015* -
## physics

Three displacement vectors of a croquet ball are shown in figure below, where |A| = 20.0 units, |B| = 40.0 units, and |C| = 30.0 units. Calculate (a) the resultant in unit-vector notation and (b) the magnitude and direction of the resultant displacement

*asked by Benn on May 23, 2011* -
## Math

Mr. Science has a pair of hamsters. The hamsters have 2 babies. Those babies grow up and have 2 babies of their own. Write the number of baby hamsters from the previous day as a numeral expression using exponential notation. How many babies are there all

*asked by mikil on August 28, 2013* -
## Science.

An atom of uranium-235 has a mass 235.043924 amu (atomic mass units). Using scientific notation, state the mass in amu of ten million such atoms.

*asked by Jeremy on August 21, 2012* -
## math help!

Mr. Science has a pair of hamsters. The hamsters have 2 babies. Those babies grow up and have 2 babies of their own. Write the number of baby hamsters from the previous day as a numeral expression using exponential notation. How many babies are there all

*asked by mikil on August 28, 2013* -
## physical

three displacement vectors of a croquet ball are shown in figure p3.49, where |a| = 20.0 units, |b| = 40.0 units, and |c| = 30.0 units. find (a) the resultant in unit–vector notation and (b) the magnitude and direction of the resultant displacement

*asked by Anonymous on March 12, 2011* -
## Physics

The tension on a string from which a 5.00kg object is suspended in an elevator is T=(44.0j)N. What is the acceleration of the elevator? Specify the acceleration in unit vector notation. T - Mg = M a with positive force upward. a = T/m - g = 8.8 - 9.8 =

*asked by Sabrina on February 20, 2007* -
## statistics

14. Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking—even if they are not exposed to the usual

*asked by rick on September 18, 2010* -
## Pre-algebra

I can't figure out how to solve: Question #1: Two number cubes are rolled and a coin is tossed. Find the number of possible outcomes. Question #2: What is the probability of winning a lottery game where the winning number is made up of 6 digits from 0-9

*asked by Tyler on December 3, 2009* -
## MATH

A certain type of combination lock has 3 dials: the first 2 dials each have settings for all the digits 0 through 9 and the third has settings for all the 26 capital letters of the alphabet. A combination consists of one setting from each of the dials. How

*asked by noorie on April 2, 2012* -
## math

Find the value of the missing digit that makes the statement true. 214,21_ is divisible by 11 Determine whether the statement is true or false. Why? If a natural number is divisible by 5 and 2, then it must also be divisible by 10.

*asked by anonymous on March 19, 2011* -
## java.please help

Write a Java program that prompts the user for a string. If the string entered by the user does not start with Hello and does not end with a digit, print incorrect and re-prompt the user. Otherwise, print Thank you.

*asked by De on October 8, 2014* -
## Algebra word problem

There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest

*asked by Linda on October 5, 2011* -
## algebra

Solve the system graphically. If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. 2x – y = 4 5x – y = 13 I do not understand how to do this

*asked by Patte on June 13, 2014* -
## Algebra

Each of the following temperature ranges is in degrees Fahrenheit. Use the formula F=9/5C+32 to find the corresponding temperature range in degrees Celsius (using interval notation and assume inclusion). a. below 32 degrees b. above 122 degrees c. below 5

*asked by Anonymous on September 2, 2018* -
## algebra

Solve each system graphically. If a system has an infinite number of solutions, use set builder notation to write the solution set. If a system has no solution, state this. x + y = 6 x - y = 4 I'm lost, Please Help!! Thank you

*asked by slomo on February 3, 2015* -
## MATH

SANTA WAS NUMBERING THE PAGES OF HIS ORDER BOOK. HE WROTE 690 DIGITS. HOW MANY PAGES WERE IN HIS ORDER BOOK?

*asked by NICK on December 14, 2011* -
## General Education Statistics | MAT112

There are many ways people can invest their money. In mutual funds, the investor buys shares in a fund that buys investment instruments for the investor, commonly stocks, bonds, or fixed instrument investments. Investment fund managers commonly advertise

*asked by Tanya on July 30, 2011* -
## home work

how i know the number of digits in each number

*asked by jjo on August 23, 2013* -
## math

Suppose a code consist of two letters followed by a digit. Find the number of (a) Codes (b) Codes with distinct letters (c) Codes with the same letters

*asked by manny on September 4, 2007* -
## math

Suppose a code consist of two letters followed by a digit. Find the number of (a) Codes (b) Codes with distinct letters (c) Codes with the same letters.

*asked by sweety on September 7, 2007* -
## maths

what is 45,429,444 to the nearest hundred-thousand? Hundred thousand digit... XX,YXX,XXX so would it be 454 hundred thousand?

*asked by meisha on March 23, 2007* -
## Math

each "word" in a special code is a three digit number. if no word in the code can begin with a 1 or 0, what is the greatest number of different words the code can contain? 28 512 800 900 1000

*asked by Anon on July 25, 2013* -
## chemistry

calculate number of atoms in 4.67 mol of Ca(NO3)2 I got: 2.81 X 10^24 C atoms or should it be 28.11 x 10^23 C atoms? 5.62 X 10^24 N atoms or should it be 9.34 x 10^23 N atoms? 1.69 x 10^25 O atoms....but are you allowed to do ^25 or should it be 168.7 X

*asked by Sarah on May 23, 2008* -
## Algebra

Help!! I am having difficulty with a problem for hours now and if I could get some help, my head might stop pounding.Solve each system graphically. if a system has an infinite number of solutions, use set builder notation to write the solution set. If a

*asked by slomo on January 2, 2015* -
## Algebra help please!

solve each system graphically. if a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. y = 2 - x 2x + 2y = 4

*asked by slomo on January 11, 2015* -
## Algebra

(3*10 to the second power)(1.5*10 the the negative fifth power) SCIENTIFIC NOTATION: 4.5*10 to the negative third power My question is what is the standard form I got 4500 but if I look closely at the problem I don't think that's possible please tell me if

*asked by Jenny on September 5, 2007* -
## geometry

A crate is 7ft. Wide 7ft. Deep and 7ft. Tall write the measurements of the crate in exponential notation, standard form, and expanded form

*asked by Ana on April 8, 2015* -
## math

A crate is 7ft. Wide 7ft. Deep and 7ft. Tall write the measurements of the crate in exponential notation, standard form, and expanded form

*asked by Ana on April 8, 2015* -
## Math

A 4-digit number rounded to the nearest ten is 2,470. Rounded to the nearest hundred, it is 2,500. What is the number?

*asked by Kaylie on September 14, 2009* -
## math

This is for Ms. Sue ! 0.002,1/4,0.20,1/5 my answer 1/5 and 0.20 7/20,6/20,3.5,0.35 my answer 3.5 0.008,0.08,2/25,1/12 my answer 0.08 14%,1/8 , 0.065, 0.03 0.065, 0.03,1/8 , 14% 0.03, 0.065, 1/8 , 14%, my answer C 0.03, 0.065, 14%, 1/8 7/14,2/5 , 32%, 0.25

*asked by Anonymous on January 21, 2013* -
## bobpursley, drwls. ms. sue Writeacher

When a second post is made to a question, the most recent is now at the bottom. Do any of you prefer the way it was, or do you like this better? I prefer to have the answers shown in the order they were posted. The second answer may clarify or add

*asked by Lance on June 16, 2005* -
## Editing

I have an ISU project due tomorrow. Could someone please edit this article on Vimy Ridge for me. Please and thanks. The Battle of Vimy Ridge commenced at dawn on April 9, 1917, when all four divisions of the Canadian Corps attacked Vimy Ridge above the

*asked by Gina on October 11, 2007* -
## Math

Topic: use function notation to evaluate equations. Evaluate the given equations for the indicated function values The questions I need help with; f(n)=5^n f(2)= f(3)= and f(n)=-n f(9)= f(-11)= Please, explain & help me :(

*asked by Please, help me. on September 7, 2017* -
## chemistry

what is the net ionic equation for the following molecular equation. HNO3 is strong electrolyte and CH3COOH is weak electrolyte. NaCH3COO(aq)+HNO3(aq)----->NaNO3(aq)+CHOOH(aq) the same question says use H+ for the hydronium ion, CH3OOH for acetic acid and

*asked by Kay on March 1, 2014* -
## French

Can you check these. I'm not really sure how to do these so I need a little help and examples. Part 1: Des promoms interrogatifs et relatifs Complétez en utilisant qu'est-ce qui ou qu'est-ce que. 1. ---------- se passe? Answer: Qu'est-ce qui 2.

*asked by Missy on September 19, 2010* -
## Financial Literacy

Terry and Sandra both found the sum of two 4-digit numbers, but their results were not the same. If Terry made an error of addition by one in the thousands column and Sandra's result was correct, what was the difference between the larger result and the

*asked by Tifini on May 15, 2013* -
## chemistry

An undesirable consequence of welding steel by acetylene torch is the rise in hydrogen concentration in the metal. That hydrogen contamination embrittles the steel. The metal is typically subjected to a vacuum heat treatment to restore ductility. A steel

*asked by lisa on December 7, 2012* -
## Chemistry

An undesirable consequence of welding steel by acetylene torch is the rise in hydrogen concentration in the metal. That hydrogen contamination embrittles the steel. The metal is typically subjected to a vacuum heat treatment to restore ductility. A steel

*asked by Andrea on December 6, 2012* -
## math

how to right this in scientific in scientific notation. (2.74×10^7)+(5.6×10^7)=

*asked by Gina-helen on March 14, 2016* -
## French

Could you check these answers also thanks so much and god bless. Directions: Indicate whether each item of clothing is for a man, woman, or for either. 1. un blouson Answer: Les deux 2. Un chemisier Answer: Les deux 3. Un pantalon Answer: Les deux 4. Une

*asked by Cupcakes (YUM) on April 20, 2009* -
## Algebra

Could someone correct my answers and help with the other problems? 1. Are the following lines parallel, perpendicular, or neither? L1 with equation x – 5y = 10, L2 with equation 5x + y = 5. Answer: Neither (I'm not to sure but i think this is the right

*asked by Timm on May 27, 2007* -
## math test

Hi! I have a math test coming up tomorrow, and I need to prepare. but,i don't know how I should. . . any help would be great. she told us to: Be prepared to identify and explain functions, linear functions and proportional functions. Be prepared to use the

*asked by Keon on October 11, 2007* -
## Math

Solve the given equation in the interval [0,2 pi]. Note: The answer must be written as a multiple of pi. Give exact answers. Do not use decimal numbers. The answer must an integer or a fraction. Note that pi is already provided with the answer so you just

*asked by Bryan on November 30, 2007* -
## Algebra

1) what is the equation for the line that passes through the point (-3,5) and has a slope of -3 ? 2)the formula for the perimeter of a rectangle is P = 2(l+w). If the width of a rectangle is half its length. how many times its length is its perimeter?

*asked by anonymous on March 18, 2011* -
## Math

My seven year old was set this question and I was asked to solve. Help please. Here is the question: My number has 5 tens. The ones digit is less than the tens. What could the number be? My solution was 5 x 10 = 50. Then subtract 1 from the tens = 49 is

*asked by Gary on October 9, 2016* -
## Data managment math

1:There are 7 seats in the family new van. if 4 of the 7 family members can drive,how many possible seating arrengements are there for a family trip in the van? 2:How many even five digit numbers can be formed using only the numbers through 1 and 7?

*asked by Samir on January 21, 2008* -
## MATH

if f (x) is a polynomial of degree 3 whose roots are p,q,r. FIND f (3) if sum of cubes of roots is 0 and sum of squares of roots and sum of roots are unit digit of 3^2018 and 5^50666666666 respectively?

*asked by Dubanhs on May 26, 2018* -
## Math - vectors

In the product F(vector)=q(V(vector)xB(vector), take q = 4, V(vector)= 2.0i + 4.0j + 6.0k and F(vector)= 136i -176j + 72k. What then is B(vector) in unit-vector notation if Bx = By?

*asked by sam on March 28, 2007* -
## Math Help? Check my answers.

1. Name the coefficients in the polynomial. 4x^2 + 3x - 3 4, -3, -3 4, 3, 4, 3, 3, -4, -3, 2. How many terms are in the following polynomial? 6x^4 + 3x^3 - 2x^2 + 15x - 14 5 4 3 2 3. In the expression -7x - 5x^2 + 5, what is the coefficient of x? 7 5 -5 -7

*asked by Lydia on May 19, 2014* -
## Algebra

1. Evaluate. (8 – 3) (12 ÷ 2 • 2) – 20 Answer: I'm not sure if its -5 or 40 2. 6x – 7 = 5(x – 2) Answer: -3 3. Solve for y. 3x – 2y = 12 Answer: 3x-12/2 4. Solve. –3(x – 3) + 8(x – 3) = x – 9 Answer: 1 1/2 or 1.5 5. Find the slope of

*asked by Loreal on December 23, 2007* -
## math

A random digit dialing phone survey asked, how many of the last ten traffic lights you drove through were red. Of 880 respondents, 171 admitted at least one light had been red. What is likely direction of the bias: More or fewer than 171 really ran a red

*asked by anonymous on March 31, 2013* -
## Physics - Question

A ball of 250g hits the floor at a velocity of 2,50 m/s at an angle of 70* relative to the vertical. The vertical force in function with time between the floor and the ball is: from 0 to 50 N : from 0 to 1 sec. from 50 N to 100 N : from 1 to 2 sec.

*asked by Raf on February 7, 2012* -
## Math

mystery numberis an even number. the number is greater than 30 and less than 50, the sum of the digits is 6. what is the mystery number?

*asked by Kaidyn on November 10, 2014* -
## Math

When you add the number of rows in my array to the number in each row, you get 15. My digits add up to 9. Which number am I?

*asked by Joshua on December 4, 2012* -
## Math

DJ was thinking of a number. He said it had 2 digits, it ended in 5, and the number in the tens place was a 4. What number was he thinking of?

*asked by Roger on March 23, 2017* -
## algebra,math

is there a good website where describes the importance of function notations. http://www.cut-the-knot.org/do_you_know/FunctionMain.shtml After reading the website it gives me the definition of function notations. Although what is important about function

*asked by jasmine20 on January 29, 2007* -
## ASAP!!!!

What foods commonly contain carboxylic acids? Why are carboxylic acids soluble (miscible) in water carboxylic acid: C6H5COOH. Sodium benzoate, the sodium salt of benzoic acid is used as a food preservative Oxalic acid containing foods The root and leaves

*asked by nicole! on June 23, 2006* -
## Discrete Mathematics

Most versions of Pascal allow variable names to consist of eight letters or digits with the requirement that the first character must be a letter. How many eight-character variable names are possible? I know that there are 2^7 ways to arrange letters and

*asked by David on March 10, 2018* -
## math

When two digits of thbase 10 representation of an inteer are intercharged, the diference bewen the old number and the new number is divisible by 9. Why? What happens in other bases? 10A + B - 10B -A= difference. This reduces to 9A - 9B 9(A-b)= difference.

*asked by tan on January 20, 2007* -
## Math

Abelardo wants to create several different 7-character screen names. He wants to use arrangements of the first 3 letters of his first name(abe, followed by arrangements of 4 digits in 1984, the year of his birth. How many different screen names can he

*asked by Minatsu on April 15, 2012* -
## Algebra 2

Abelardo wants to create several different 7-character screen names. He wants to use arrangements of the first 3 letters of his first name(abe, followed by arrangements of 4 digits in 1984, the year of his birth. How many different screen names can he

*asked by Tom on April 16, 2012* -
## Chem Titration and pH

Calculate the pH at 0mL, 5mL,...40mL for a 10.0mL aliquote of 0.100M Na3AsO4 (weak base) titrated with 0.100M HCl pKa1 = 2.25 pKa2 = 6.77 pKa3 = 11.60 Thank you First you should write equations to know where we are in the titration. At the beginning, we

*asked by julie on October 7, 2006* -
## Algebra 2/Math

Can you check these thanks. Solve the system by substitution or elimination. 2x+y=1 3x-y=14 Answer: (3,5) x-3y= -12 2x + 11y= -7 Answer: (39,17) 4x+2y=8 12x+6y=24 Answer: no solution 4x-2y=5 2x-y= -1 Answer: no solution 4a+3b =6 8a-b= -9 Answer: no

*asked by Karen on November 20, 2010* -
## Math(Please check answers)

1) Solve the equation: 15(7x-6) = 3x-5 My answer is (-85/108) 2) Mary and her brother collect coins. Mary has 4 times the number of coins that her brother has. Together they have 175 coins. How many does Mary have? My answer is 140 3) Perform the indicated

*asked by Hannah on September 5, 2010* -
## math

Mary's birthday is between June 13 and June 23. The date of her birthday is not an even number. The sum of the digits is 3. When is Mary's birthday? explain how you figure the problem

*asked by Shonda on August 26, 2009* -
## number theory

How do you prove that any palindrome, a number that reads the same backwards and forwards, with an even number of digits is divisible by 11? I know how to show a number is divisible by 11, but how do you prove the above case?

*asked by Laura on April 19, 2009*

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