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April 19, 2014

Homework Help: Math

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Recent Math Questions

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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=se​cond+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/sequen​ces-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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