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April 19, 2014

April 19, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

What don't you understand about this assignment?
*Monday, March 31, 2014 at 12:24pm*

**Math **

Find the probability of drawing the face card that is a spade on the first-draw replacing it and drawing a king card on the second draw
*Monday, March 31, 2014 at 11:56am*

**math**

1.Partition a rectangle into rows and columns of same-size squares and count to find the total number of them. 2.Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe ...
*Monday, March 31, 2014 at 10:53am*

**math**

3sin = 1.2 sinØ = .4 (set your calculator to RAD) Ø = .41152 or π-.41152 which is 2.73008 but you wanted from 0 to 4π so add a period , or 2π, to each of the above answers Ø = .41152 , 2.73008 , .6947, and 9.01326
*Monday, March 31, 2014 at 10:25am*

**Math 110**

I don't understand how you got 2016. I understand how you added to get the 1,9, 11, and 6. But I do not understand where you got the 1->2, 9->0, and 11->1.
*Monday, March 31, 2014 at 9:22am*

**math**

Solve the trigonometric equation 3sinθ=1.2 for 0≤θ≤4π
*Monday, March 31, 2014 at 9:14am*

**Patterns and rules unit test 7th grade **

I go to connection acdeamy and I am in the 7th grade regular math Mrs. Janus I just need some help with this test Find the next three terms of the sequence -2,-12,-72,-432... A. -1,728,-6,912,-27,648
*Monday, March 31, 2014 at 8:36am*

**math**

Thank you so much. I got really confused on the system of equations but I think I understand it now. Thank you :)
*Monday, March 31, 2014 at 6:51am*

**math**

2w + b = 36 2w + 2b = 56 well, since she walks 2 hours in each case, it is clear that the extra hour of biking gave her an extra 20 km. b = 20 so, since 2w+20=36, w=8
*Monday, March 31, 2014 at 5:34am*

**math**

If Cathy walks for 2 h and rides her bicycle for 1 h, she can travel 36 km. If she walks for 2 h and rides her bicycle for 2 h, she can travel 56 km. How fast can she walk? How fast can she ride her bike? Let w represent walking and b represent biking.
*Monday, March 31, 2014 at 2:25am*

**Science/Math**

166 years
*Monday, March 31, 2014 at 1:22am*

**math**

9x/4 = 1/3 x = 4/27
*Monday, March 31, 2014 at 12:19am*

**math**

3/5
*Sunday, March 30, 2014 at 11:49pm*

**Math (check answer)**

if you mean absolute value of 7 yes it is 7
*Sunday, March 30, 2014 at 10:39pm*

**math**

2 * 3 = 3 * 2 ????? Commutative
*Sunday, March 30, 2014 at 10:35pm*

**math**

The two fractions below cannot be simplified as they are, but if you switch the numerators, they can be simplified. What property allows us to do this? 2/3 x 3/8
*Sunday, March 30, 2014 at 10:27pm*

**math**

You are welcome, good luck.
*Sunday, March 30, 2014 at 10:14pm*

**Math**

You are welcome :)
*Sunday, March 30, 2014 at 10:13pm*

**Math**

Thanks man!
*Sunday, March 30, 2014 at 10:12pm*

**Math (check answer)**

find [7] A.1/7 B.-7 C.7 D.0 i pick 7.
*Sunday, March 30, 2014 at 10:09pm*

**Math C redone**

should subtract 30 (14*2+2), not 44 c) draw a Venn diagram Only in A1 = 103 - 30 = 73 Only in A2 = 992- 30= 962 Only in A3 = 10011 - 30 = 9981 shared = 3*14 + 2 = 44 sum = 11060
*Sunday, March 30, 2014 at 9:51pm*

**Math riddle**

122
*Sunday, March 30, 2014 at 9:46pm*

**Math**

a) just add them 11106 b) They are all in A3 so 10011 c) draw a Venn diagram Only in A1 = 103 - 44 = 59 Only in A2 = 992- 44= 948 Only in A3 = 10011 - 44 = 9967 shared = 3*14 + 2 = 44 sum = 11018
*Sunday, March 30, 2014 at 9:37pm*

**math**

I agree with you guys but thank you for the info! I appreciate it very much! :) have a nice night!
*Sunday, March 30, 2014 at 9:26pm*

**math**

25 * .65 = 16.25 25 * 0.65 * 0.2 = 3.25 but I do not believe that 0.2. I think you have the loss 80% when it should be like 20%
*Sunday, March 30, 2014 at 9:21pm*

**math**

You forgot the decimal point. It's 16.25 pounds. I agree with Damon that an 80% cooking loss can not be right.
*Sunday, March 30, 2014 at 9:19pm*

**Math**

do you mean y = 18/(x^2-9) ???? if so dy/dx = -18 (2x)/(x^2-9)^2 0 at x = 0 In that interval the bigger |x|. the more negative the function so it is max when x = 0 18/-9 = -2 so C
*Sunday, March 30, 2014 at 9:17pm*

**math**

I dont know what I am doing wrong but I multiplied 25•65=1625 now I am stuck
*Sunday, March 30, 2014 at 9:12pm*

**Math**

Find the number of elements in A1∪A2∪A3, supposing that there are 103 elements in A1, 992 elements in A2, 10011 elements in A3, in each of the following situations: (a) The sets are pairwise disjoint, that is, no pair has common elements, that is, the intersection ...
*Sunday, March 30, 2014 at 9:11pm*

**Math**

In a survey of 280 college students, it is found that 67 like brussels sprouts, 93 like broccoli, 60 like cauliflower, 26 like both brussels sprouts and broccoli, 21 like both brussels sprouts and cauliflower, 20 like both broccoli and cauliflower, and 10 of the students like ...
*Sunday, March 30, 2014 at 9:10pm*

**math**

x/4 +2x =1/3
*Sunday, March 30, 2014 at 9:09pm*

**math**

the cooking loss is 80% ??? that does not sound right but if you are serious then 25 * (1-.35) (.2)= 25*.65*.2 = 3.25 pounds
*Sunday, March 30, 2014 at 9:06pm*

**Math**

What is the maximum value of the function y= 18/x^2-9 over the interval -3<x<3? A. 0 B. 2 C. -2 D. Infinity
*Sunday, March 30, 2014 at 9:04pm*

**math**

The chef has 25 pounds of strip loin. The trim loss on the strip loin is 35% amd the cooking loss is 80% of the trimmed weight. How many pounds of trimmed, cooked strip loin will the chef have left to serve to his customers?
*Sunday, March 30, 2014 at 9:02pm*

**Math help please!!!**

Determine the equation of g(x) that results from translating the function f(x) = x2 + 7 upward 12 units.
*Sunday, March 30, 2014 at 9:02pm*

**math**

22.5 / 0.75 = x / 0.25 0.75x = 0.25 * 22.5 0.75x = 5.62 x = 5.625 / 0.75 x = 7.5
*Sunday, March 30, 2014 at 8:52pm*

**Math**

It is not a proportion. It is a fraction. divide 144 by 1200 get .12 to convert a fraction to a percent, multiply by 100 100 * .12 = 12 %
*Sunday, March 30, 2014 at 8:48pm*

**Math**

Do I multiply or divide the 144 and 1200? How do I set this up in a proportion?
*Sunday, March 30, 2014 at 8:44pm*

**math**

I got 8.3?
*Sunday, March 30, 2014 at 8:28pm*

**Math**

look for where second derivative is positive. ( x <0.75) https://www.wolframalpha.com/input/?i=second+derivative+of+-1%2F%28x-.75%29
*Sunday, March 30, 2014 at 8:23pm*

**math**

22.5 / 0.75 = x / 0.25 Cross multiply and solve for x.
*Sunday, March 30, 2014 at 8:15pm*

**Physics**

I can not find an error. I hope one of the other math/physics teachers finds something.
*Sunday, March 30, 2014 at 8:10pm*

**Math**

You've received several answers this evening. Now it's your turn. We'll be glad to check your answer.
*Sunday, March 30, 2014 at 8:04pm*

**Math**

The ratio of the number of boys to the number of girls in Mr. Brown's class is 5:4. Which of the following can be calculated using the information given? A. The number of girls in Mr. Brown's class B. The number of boys in Mr. Brown's class C. The ratio of the ...
*Sunday, March 30, 2014 at 8:02pm*

**Math**

D
*Sunday, March 30, 2014 at 8:02pm*

**Math **

for the function y=-(1)/(x-3/4) describe the intervals where the slope is increasing and where its decreasing
*Sunday, March 30, 2014 at 8:00pm*

**Math**

Michael has a science project due. He knew that it would take him 4 hours to complete the project. He needed to spend 50% of his time on his experiment, 40% of his time on his analysis, and 10% on putting his project together. What is the ratio of time spent putting his ...
*Sunday, March 30, 2014 at 7:58pm*

**math**

Thank you so much but can you please put it in with the proportion set up? I just learned this from school and my teacher wants me to write the proportion set up for extra credit and I do not know how :/
*Sunday, March 30, 2014 at 7:54pm*

**Math**

1/2 if a length dimension on the big one is twice the same length dimension on the little one then lengths on the small one are 1/2 those on the big one.
*Sunday, March 30, 2014 at 7:52pm*

**Math**

1cm /50 in = 4 cm/x in x = 200 in
*Sunday, March 30, 2014 at 7:46pm*

**Math**

12/8 = 3/2 = boys/girls boys/total = 3/5 girls/total = 2/5 so that boys/girls = 3/2 so girls /total = 2/5 = girls/400 girls = 800/5 = 160
*Sunday, March 30, 2014 at 7:35pm*

**Math**

100(144/1200) = ?
*Sunday, March 30, 2014 at 7:35pm*

**Math**

The height of an elephant in a scale drawing is 4 cm. The scale in the drawing is 1 cm to 50 in. What is the actual height of the elephant. A. 200 in B. 400 in C. 53.5 in D. 25 in
*Sunday, March 30, 2014 at 7:33pm*

**Math**

A serving of ice cream contains 1200 calories. One hundred forty-four calories come from fat. What percent of the total calories come from fat???
*Sunday, March 30, 2014 at 7:33pm*

**Math**

2.5/5 = 1/2
*Sunday, March 30, 2014 at 7:33pm*

**Math**

In Mrs. Julie's classroom the ratio of boys to girls is 12 to 8. If the entire elementary school has a population of 400 students, how many would you expect to be girls?
*Sunday, March 30, 2014 at 7:30pm*

**math**

0.75x = 22.5 x = 22.5 / 0.75 x = 30.4 gallons is the capacity of the container 30.4 - 22.5 = _______ remaining quarts
*Sunday, March 30, 2014 at 7:30pm*

**Math**

4 * 50
*Sunday, March 30, 2014 at 7:29pm*

**Math**

4 n - 6 = 2 n + 4 2 n = 10 n =5
*Sunday, March 30, 2014 at 7:29pm*

**Math**

just translate the English into Math, 4x - 6 = 2x + 4 then solve for x
*Sunday, March 30, 2014 at 7:29pm*

**math**

22.5 quarts = .75 (total) total = 22.5/.75 we have .25 * total so we have .25 * 22.5/.75 =22.5/3 = 7.5
*Sunday, March 30, 2014 at 7:28pm*

**Math**

The Look Alike Doll Company makes dolls that resemble people. Pam's mom is having a doll made to look alike Pam. Pam is 5 feet tall. The doll will be 2 1/2 feet tall. What is the ratio of the doll's height to Pam's height?
*Sunday, March 30, 2014 at 7:27pm*

**Math**

Jason drew two circles. the diameter of the larger circle is twice the diameter of the smaller circle. What is the ratio of the circumference of the smaller circle to the circumference of the larger circle?
*Sunday, March 30, 2014 at 7:22pm*

**Math**

The height of an elephant is a scale drawing is 4cm. The scale in the drawing is 1 cm to 50 in. What is the actual height of the elephant?
*Sunday, March 30, 2014 at 7:20pm*

**Math**

Four times a number, diminished by 6, yields the same result as twice the same number increased by 4. Find the number.
*Sunday, March 30, 2014 at 7:20pm*

**math**

You have a large container of olive oil. You have used 22 1/2 quarts of oil. Twenty-five percent of the olive oil remains. How many quarts of olive oil remain?
*Sunday, March 30, 2014 at 7:17pm*

**MATH VERY URRRGENT!!!!!!!!!!!!!**

ikr
*Sunday, March 30, 2014 at 6:43pm*

**Math**

Borrowed $14,000.00 at 8% for 90 days.What is the interest?
*Sunday, March 30, 2014 at 6:40pm*

**math**

√(1^2+3^2) = √10 = ?
*Sunday, March 30, 2014 at 5:26pm*

**math**

perimeter is 2(12+16) = 56 side of square is thus 14. So, the area is ? Note that 12*16 = (14-2)(14+2)
*Sunday, March 30, 2014 at 5:24pm*

**math**

After 9 cycles he has made 18 miles On day 10 he swims the last 7 miles.
*Sunday, March 30, 2014 at 5:23pm*

**math**

makes good 2 miles per day after 12 day/night cycles is at the 24 mile mark so he will just make it at dusk on the 25 th day
*Sunday, March 30, 2014 at 5:19pm*

**math**

A piece of rope is in the shape of a 12ft. by 16ft. rectangle. The same rope is then shaped into a square. What is the area of square?
*Sunday, March 30, 2014 at 5:19pm*

**math**

A salmon has to swim 25 miles upstream. It seems 7 miles each day and drifts 5 miles at night. How many days does it take for the salmon to first reach the 25 mile mark?)
*Sunday, March 30, 2014 at 5:15pm*

**Math**

2 = 1.0275^n log 2 = n log 1.0275 n = 25.6 years
*Sunday, March 30, 2014 at 5:06pm*

**Math 110 UOP**

Multiply 28x72 using lattice method. been there done that, see below and please post once HUH, 5^2 = 4^2 +3^2 if that is what you mean
*Sunday, March 30, 2014 at 4:56pm*

**Math 110**

278 = 2*139 139 is a prime number to that is the end ***** 2 ***** 8 **** 1->2 1/4 **** 5/6 ** 7 9->0 0/4 **** 1/6 ** 2 11->1 *** 6 so 2016
*Sunday, March 30, 2014 at 4:54pm*

**Math**

Let the number of played games in the first place be x. Total number of games is therefore x+15. Then 0.6x games were won in the first place. If the extra 15 will be won, then total games won is 0.6x+15=0.8(x+15). Solving this equation. Then solve for x in this equation. The ...
*Sunday, March 30, 2014 at 4:38pm*

**Math**

The population of some countries has a relative growth rate of 2.75% per year. At this rate, how many years (to the nearest tenth of a year) will it take the population to double?
*Sunday, March 30, 2014 at 4:33pm*

**Math 110 UOP**

Multiply 28x72 using lattice method. Find the Pythagorean triple from the given generators p=5 and q=4.
*Sunday, March 30, 2014 at 4:25pm*

**Math 110**

Write 278 as a product of prime numbers. Multiply 28x72 using lattice method.
*Sunday, March 30, 2014 at 4:24pm*

**Math 110**

Multiply 28x72 using lattice method. Write 278 as a product of prime numbers.
*Sunday, March 30, 2014 at 4:23pm*

**math riddle ALGEBRA WITH PIZZAZZ**

Qui fin mio si dėrti mà!!!!
*Sunday, March 30, 2014 at 3:22pm*

**math**

Find the distance between points (1, 6) and (2, 3) to the nearest tenth.
*Sunday, March 30, 2014 at 3:18pm*

**Math**

a = .5 r = .5 a r^(n-1) = .5 * .5(6) = .0078125 That is maybe a pepper corn :) http://www.mathsisfun.com/algebra/sequences-sums-geometric.html
*Sunday, March 30, 2014 at 2:46pm*

**math**

Yes, I wondered about this state's educational achievements as well :)
*Sunday, March 30, 2014 at 2:42pm*

**Math**

your class is conducting an experiment to study geometric sequences. The class forms a line. the first person takes a whole pizza,divides it in half, keeps half, and hands it to the next person. The next people in line do the same with there peices. Which portion does the ...
*Sunday, March 30, 2014 at 2:42pm*

**math**

.56 (11) = 6.16 I have no idea what the standard deviation is so can not do more. If I knew it I would use mean of 6.16 and some standard deviation in: http://davidmlane.com/hyperstat/z_table.html
*Sunday, March 30, 2014 at 2:41pm*

**math**

I don't understand. 0nly 11 capable students in the state???
*Sunday, March 30, 2014 at 2:39pm*

**math**

2. In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in college. c.At least 4...
*Sunday, March 30, 2014 at 2:34pm*

**math**

11 * 0.56 = 6.26 = 6
*Sunday, March 30, 2014 at 2:09pm*

**math**

A promissory note for $15,000 was written on March 10( for 180 days at 6%. It was discounted on June 15 at 12.5%. Find a) the maturity value b) Maturity date c) term of the discount d) discount amount e) The proceeds.
*Sunday, March 30, 2014 at 1:35pm*

**math**

2. In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in college at least 4
*Sunday, March 30, 2014 at 1:33pm*

**math**

zza
*Sunday, March 30, 2014 at 1:13pm*

**math**

never mind, it's 5760 counting Stacy and Rogers
*Sunday, March 30, 2014 at 12:59pm*

**math**

Good logic, but I wonder about the .47 in light of P(college) = .56
*Sunday, March 30, 2014 at 12:54pm*

**math**

40320
*Sunday, March 30, 2014 at 12:53pm*

**Math - incomplete**

depends on how many she already has made. If she has made n shots so far, then we need x such that .70n + 1.00x = .75(n+x)
*Sunday, March 30, 2014 at 12:50pm*

**math**

You're kidding, right? 11 capable graduates in the whole state? Anyway, just work it out: P(1) = .56 P(2) = .56*.56 = .56^2 ... P(11) = ?
*Sunday, March 30, 2014 at 12:48pm*

**Math**

just subtract the smaller volume from the larger: 10*10*15 - 7*9*12 = ?
*Sunday, March 30, 2014 at 12:45pm*

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