Number of results: 42
math213
2054
Saturday, November 7, 2009 at 10:24pm by fiona
math213
lajnklh
Thursday, October 29, 2009 at 8:27pm by Anonymous
math213
Let U = {u, n, i, t, e} FIND THE SUBSETS
Monday, November 2, 2009 at 11:24pm by brina
MATH213
What if x itself is negative ? e.g. √-(-9) = 3
Monday, January 18, 2010 at 9:58pm by Reiny
math213
poems of associative property
Saturday, November 28, 2009 at 2:48pm 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
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
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
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
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
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
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
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 ...
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. ...
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&#...
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 ...
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 ...
Tuesday, October 27, 2009 at 11:29pm 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 ...
Tuesday, October 27, 2009 at 10:58pm 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&...
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: http://www.freemathhelp.net/eflp/free+math+help/pid153163/D451213/C3500224 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, ...
Monday, December 14, 2009 at 12:55am by Writeacher
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