Saturday

April 19, 2014

April 19, 2014

Number of results: 42

**math213**

lajnklh
*Thursday, October 29, 2009 at 8:27pm by Anonymous*

**math213**

2054
*Saturday, November 7, 2009 at 10:24pm by fiona *

**math213**

Let U = {u, n, i, t, e} FIND THE SUBSETS
*Monday, November 2, 2009 at 11:24pm by brina*

**math213**

poems of associative property
*Saturday, November 28, 2009 at 2:48pm by alicia*

**MATH213**

What if x itself is negative ? e.g. √-(-9) = 3
*Monday, January 18, 2010 at 9:58pm by Reiny*

**math213**

A jacket that used to sell for $80 now sells at $120, a markup of 150% So there!
*Tuesday, November 3, 2009 at 11:39pm by Reiny*

**math213**

31. Determine whether each of the following numbers is prime or composite. (a) 231 (b) 393
*Tuesday, December 15, 2009 at 12:06am by alicia*

**college math213**

Place parenthesis, if needed, to make each of the following equations true: a) 5 + 6 * 3 = 33
*Tuesday, July 27, 2010 at 6:10pm by Anonymous*

**math213**

A student reports that it is impossible to mark a product up 150% because 100% of something is all there is. What is your response?
*Thursday, November 5, 2009 at 1:18pm by brina*

**college math213**

place parentheses, if needed, to make each of the following equations true: a.5+6.3=33 b.8+7-3=12 c.6+8-2/2=13 d.9+6/3=5
*Tuesday, July 27, 2010 at 6:10pm by fiona*

**math213**

11. A student reports that it is impossible to mark a product up 150% because 100% of something is all there is. What is your response?
*Tuesday, November 3, 2009 at 11:39pm by brina*

**math213**

32. If a = 5^2 • 7 • 11 • 13 and b = 2^3 • 5^2 • 7^3 • 17, find the following. (Leave your answer written with exponents.) (a) GCD(a, b) (b) LCM(a,b)
*Tuesday, December 15, 2009 at 2:33pm by alicia*

**MATH213**

A student claims that the equation√-x=3 has no solution, since the square root of a negative number does not exist. Why is this argument wrong?
*Monday, January 18, 2010 at 9:58pm by Rebecca*

**MATH213**

13. For each of the following, find all possible whole-number replacements that make the following statements true. 2 • ______ + 15 < 27
*Monday, December 14, 2009 at 11:16pm by alicia*

**MATH213**

2*x + 15 < 27 Solve for x. 2*x < 12 x < 6
*Monday, December 14, 2009 at 11:16pm by Marth*

**MATH213**

That is not a correct method, because some numbers are multiples of both 4 and 5. Those are the ones divisible by 20. The correct answer is 250 + 200 - 50 = 400. Do you see why?
*Tuesday, January 26, 2010 at 4:02pm by drwls*

**MATH213**

My calculator goes out one more decimal place to show the difference. I do not know any way your calculator could show it. Sorry.
*Wednesday, January 20, 2010 at 5:03pm by PsyDAG*

**MATH213**

a) ¡î(2*121) = ¡î121 ¡î2 = 11¡î2 b) ¡î(144*2) = ¡î144 ¡î2 = 12¡î2 c) ¡î(36*10) = 6¡î10 d) not so sure about d... is ©ú¡î a typo?
*Wednesday, January 20, 2010 at 5:02pm by Andy*

**math213**

"Marking up" refers to the price, which can be anything. The amount of the product will stay the same (usually). You can also mark up by decreasing the package size, as is often done with candy bars, coffee etc.
*Thursday, November 5, 2009 at 1:18pm by drwls*

**math213**

150 + 54 + 260 = income 22 + 60 + 15 + 58 + 185 = expenses Subtract the expenses from the income to find the money he has left.
*Saturday, November 7, 2009 at 10:24pm by Ms. Sue*

**math213**

Say you have 12 books, but room to display only 7. I will open this to everyone - how many differnt arrangements are there if the order of the books matters (permutation) and how many if order is of no consequence (combination)?
*Thursday, October 29, 2009 at 8:27pm by brina*

**college math213**

Try putting the parentheses around two numbers and figure out what you get. Don't forget that you do operations in parentheses first. For example: 16-7+5=4 You could do: (16-7)+ 5 = 4 OR 16-(7+5) = 4 Which one would be right?
*Tuesday, July 27, 2010 at 6:10pm by Ben*

**MATH213**

12. A student argues that a p% increase in salary followed by a q% decrease is equivalent to a q% decrease followed by a p% increase because of the commutative property of multiplication. How do you respond?
*Wednesday, January 20, 2010 at 5:04pm by Rebecca*

**math213**

I need help in finding five websites that contain mathematical activities, manipulatives, or lesson plans for fractions, decimals, or percents. · Prepare an annotated bibliography for each Web site, along with a brief explanation of why each site is worthwhile, and how you ...
*Monday, December 14, 2009 at 12:55am by alicia*

**MATH213**

Write each of the following in the form a √ b or a ⁿ√ b, where a and b are integers and b has the least value possible: a. √242 b. √288 c. √360 d. ⁿ√162
*Wednesday, January 20, 2010 at 5:02pm by Rebecca*

**math213**

Try the divisibility rules: A number is divisible by 2 if the last digit is even. (a) ..1 NO (b) ..3 NO A number is divisible by 3 if the sum of the digits is divisible by three. (a) 2+3+1=6/3=2 with no remainder (b) 3+9+3=12/3=4 with no remainder Can you make the conclusions?
*Tuesday, December 15, 2009 at 12:06am by MathMate*

**math213**

a. 24.94189, 24.9419, 24.94199, 24.942 b. -34.2519, -34.251, -34.25, -34.205 Are you sure that you don't have a typo in the last quantity?
*Monday, September 5, 2011 at 12:16am by PsyDAG*

**math213**

In each of the following, order decimals from least to greatest a.24,9419, 24.942, 24,94189, 24.94199 b.-34.25, -34.251, -34.205, -34.2519
*Monday, September 5, 2011 at 12:16am by Aisha*

**MATH213**

A student wants to know how many integers between 1 and 1000 are a multiple of 4 or a multiple of 5. She wonders if it is correct to find the number of those integers that are multiples of 4 and add the number of those that are multiples of 5. How do you respond?
*Tuesday, January 26, 2010 at 4:02pm by Rebecca*

**math213**

Wally kept track of last week’s money transactions. His salary was $150 plus $54 in overtime and $260 in tips. His transportation expenses were $22, his food expenses were $60, his laundry costs were $15, his entertainment expenditures were $58, and his rent was $185. After ...
*Saturday, November 7, 2009 at 10:24pm by brina*

**MATH213**

6. Explain how you would respond to the following: a. A student claims that 9443/9444 and 9444/ 9445 are equal because both display 0.9998941 on his scientific calculator when the divisions are performed. b. Another student claims that the fractions are not equal and wants to ...
*Wednesday, January 20, 2010 at 5:03pm by Rebecca*

**MATH213**

The font didn't seem to process, so i did it in txt form again: a) sqrt(2*121) = sqrt(121) sqrt(2) = 11*sqrt(2) b) sqrt(144*2) = sqrt(144) sqrt(2) = 12*sqrt(2) c) sqrt(36*10) = 6*sqrt(10) d) not so sure about d... is nroot(162) a typo?
*Wednesday, January 20, 2010 at 5:02pm by Andy*

**math213**

a = 5^2 • 7 • 11 • 13 b = 2^3 • 5^2 • 7^3 • 17 The factors common to both a and b have been highlighted. The product of these factors is the GCD. The LCM is the product of the remaining factors (not highlighted) of both a and b, i.e. 11•13•2^3•5^2•7^3•17
*Tuesday, December 15, 2009 at 2:33pm by MathMate*

**math213**

Write the following argument symbolically and then determine its validity: If you are fair-skinned, you will sunburn. If you sunburn, you will not go to the dance. If you do not go to the dance, your parents will want to know why you didn’t go to the dance. Your parents do not...
*Tuesday, December 15, 2009 at 12:49am by alicia*

**math213**

If the order does matter than the number of permutations is 12*11*10*9*8*7*6= P(12,7) = 3991680 if the order does not matter (combinations) it would be 12!/(7!5!) = C(12,7) = 792 both P(n,r) and C(n,r) can be found on a standard scientific calculator usually they are labeled ...
*Thursday, October 29, 2009 at 8:27pm by Reiny*

**math213**

http://www.jiskha.com/display.cgi?id=1256683010
*Tuesday, October 27, 2009 at 10:58pm by Reiny*

**math213**

Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many different ...
*Tuesday, October 27, 2009 at 10:58pm by brina*

**math213**

Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many different ...
*Tuesday, October 27, 2009 at 11:29pm by brina*

**math213**

Chocolate + singles Chocolate + doubles Chocolate + triples Vanilla + singles Vanilla + doubles Vanilla + triples Strawberry + singles Strawberry + doubles Strawberry + triples There are a total of how many different ways? 3+3+3=? Find it, and thats your final answer.
*Tuesday, October 27, 2009 at 11:29pm by Dean*

**MATH213**

Calculators usually store more numbers internally than on the screen. Since you get 0.9998941, ask the student to subtract 1 from ANS. (If you don't have an ANS button, you can press the subtraction sign after pressing equal sign for the same effect as pressing "ANS" and...
*Wednesday, January 20, 2010 at 5:03pm by Andy*

**math213**

http://mathforum.org/dr.math/ Browse the Archive http://www.themathleague.com/ http://www.freemathhelp.com/ http://www.aaamath.com/ http://www.mathisfun.com/ There are various ways to navigate these websites, but you should get plenty of ideas.
*Monday, December 14, 2009 at 12:55am by Writeacher*

**math213**

A few more: (Broken Link Removed) http://www.homeschoolmath.net/worksheets/ http://nlvm.usu.edu/en/nav/vlibrary.html http://staff.argyll.epsb.ca/jreed/math7/strand1/1108.htm If you need help with an annotated bibliography, see these: http://www.google.com/search?q=MLA+...
*Monday, December 14, 2009 at 12:55am by Writeacher*

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