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March 3, 2015

Homework Help: Math

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Recent Math Questions

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Math-Trigonometry
Show that if x, y, and z are consecutive terms of an arithmetic sequence, and tan y is defined, then (sin x + sin y + sin z) / (cos x + cos y + cos z) = tan y. So I tried letting x = y-k (since x,y,z are consecutive terms of an arithmetic sequence), then z= y+k So we get (sin(...
Thursday, November 7, 2013 at 1:38pm

BUSINESS MATH
A worker is paid $9.80 per hour, with time and a half for any hours over 40 per week. If he works 44 hours in a week, what will be his gross pay amount
Thursday, November 7, 2013 at 1:38pm

math
. Cimarron Homes Inc. purchased a snow plow for $57,000 and financed the full amount for 5 years at an annual simple interest rate of 9%. a. Find the interest due on the loan. b. Find the monthly payment
Thursday, November 7, 2013 at 12:54pm

Math
You draw nine cards from a standard deck of cards. What is the probability that a. four or more will be red, b. exactly two or three will be red, c. two or fewer will be red, and d. exactly five will be red?.
Thursday, November 7, 2013 at 11:08am

Math
0 689 1 6778 2 00124455689 3 11233 4 5 01 Stem and leaf plot--How many students are in the smallest class? In the largest class?
Thursday, November 7, 2013 at 10:45am

MATH
Two students h and k appeared in an examination. The probability that h will qualify the exam is 0.05 and that the probability that k will qualify the examination is 0.21. The probibality that both will qualify the examination is 0.03 find the probibality that .(a)both h and k...
Thursday, November 7, 2013 at 10:38am

MATH
Write down the following events as sets and also write the corresponding sample space.(1)an odd appears in a single toss of a fair die.(2)at least one head appears in two tosses of a fair coin.
Thursday, November 7, 2013 at 10:28am

Math
I'm trying to figure out the mode and modal class and the numbers that are the mode are 17, 20, 24, 25, 31, 33 from a set of numbers. (I already figured that part out). My question is what of those numbers is the modal class or in other words what is a modal class as ...
Thursday, November 7, 2013 at 10:25am

Math!
0.375 < 0.4 Is this statement true?
Thursday, November 7, 2013 at 10:21am

math
at what rate of interest per annum,the amount of 10000 will be doubled in 5 years,interest being compounded quarterly
Thursday, November 7, 2013 at 10:18am

math iv
When the directions include the words "0 < Theta < 90" what type of problem does that infer?
Thursday, November 7, 2013 at 9:25am

math
please help to solve tie exponential equation for x: 5^x=8
Thursday, November 7, 2013 at 8:04am

math
find the mean.variance.and standard deviation for the following data 6,12,6,8,10,8,12,8,14,16
Thursday, November 7, 2013 at 3:32am

math
For 4.95 seconds , a particle moves in a straight line according to the position function: s(t) = e^t(5-t)-5 . a. when id the particle at rest ? when is particle moving forward ? b. Find the total distance traveled by the particle in intervals [0,1] seconds and [1,2] seconds...
Thursday, November 7, 2013 at 3:04am

math
For 4.95 seconds , a particle moves in a straight line according to the position function: s(t) = e^t(5-t)-5 . a. when id the particle at rest ? when is particle moving forward ? b. Find the total distance traveled by the particle in intervals [0,1] seconds and [1,2] seconds...
Thursday, November 7, 2013 at 3:04am

Math
3/4x^2 x 2x^2y x 23xy^3
Thursday, November 7, 2013 at 12:37am

English Grammar
Which sentence uses proper grammar? I'm bored by math class. Or I'm bored of math class.
Thursday, November 7, 2013 at 12:12am

Math
True or False: A function's graph may include solutions that do not appear in its table of values.
Wednesday, November 6, 2013 at 11:37pm

Math Ms. Sue please help!!!
Okay I am really stuck on this question Tip: ^ = exponent Example: 6x10^7 7 is exponent Question: Venus is the second planet from the sun. Earth is the third planet from the sun. The distance from Venus to the sun is 6.72x10^7 and the distance from Earth to the sun is 9.3x10^7...
Wednesday, November 6, 2013 at 11:15pm

Math
A sink can be filled by a pipe in 6 minutes but it takes 12 minutes to drain a full sink. If both the pipe and the drain are open, how long will it take to fill the sink?
Wednesday, November 6, 2013 at 10:36pm

Math
Triangle ABC has coordinates A(1,4); B(3, -2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the x-axis.
Wednesday, November 6, 2013 at 10:30pm

MATH
Harriet needs to ship a small vase. The box she will use has a volume of 216 cubic inches. If the side lengths are all the same, what is the length of each side of the box? Hint: V= s^3.
Wednesday, November 6, 2013 at 10:22pm

math
what multiple does 27,8, and 6 all have in common
Wednesday, November 6, 2013 at 10:21pm

Math
The first modern electronic computer, called ENIAC, was introduced in 1946. Personal home computers were not available until 28 years later. In what year were personal home computers introduced.
Wednesday, November 6, 2013 at 10:02pm

math calculus
A person stands on a bridge that is 100 feet above a river. If she drops a pebble how fast is it moving after 2 seconds? How long does it take the pebble to reach the river below? She has another pebble that she tosses up with initial speed of 8 feet per second. It goes up, ...
Wednesday, November 6, 2013 at 9:52pm

math
Juan has measured the location of his bookcase and realized that he could only fit a bookcase with shelves that are 1 3/4 feet wide. what is the maximum number of shelves Juan could build for a new bookcase using 18 ft of lumber.
Wednesday, November 6, 2013 at 9:15pm

Math
Information: Juan plans to build a bookcase t store his paperback books, DVDs, and CDs. he has lumber that he will use for the sides and back of the bookcase. Juan plans for his bookcase to have five shelves including, the top and bottom shelves. Each shelf will be 2 1/2 feet ...
Wednesday, November 6, 2013 at 9:09pm

math
Andrea and her grandmother paid$32 to go to the museum. An adultticket was 3 times the cost of a child’sticket. How much was an adult ticket?
Wednesday, November 6, 2013 at 8:59pm

math
two plus eleven & one plus twelve" what do these 2 have in common
Wednesday, November 6, 2013 at 8:55pm

honor math
2 1/2 divided by 5/6
Wednesday, November 6, 2013 at 8:18pm

math
Sam, Trish, and Shanti are making signs for the spring dance. Sam can make a sign in 3/4 of an hour, Trish can make a sign in 2/3 of an hour, and Shanti can make a sign in 3/5 of an hour. a. How many complete signs can each person make in 4 hours?
Wednesday, November 6, 2013 at 8:15pm

math
A hobby shop has 4 times as manymodel airplanes as model helicopters.The total number of model airplanesand helicopters is 35. How manymodel airplanes does the hobby shophave?
Wednesday, November 6, 2013 at 7:46pm

math
y dont they allow scissors in the school cafeteria?
Wednesday, November 6, 2013 at 7:09pm

Math
Hat are the possible solutions for the following problem? |x + 3| < 5
Wednesday, November 6, 2013 at 7:08pm

math
Three groups of students are sharing leftover pizza (all the same size originally). In which group does each student get the most pizza? Explain your choice. A. Six students equally share 3/4 of a pizza B. Three students equally share 1/3 of a pizza C. Four students equally ...
Wednesday, November 6, 2013 at 7:04pm

Math
How do you factor 12v^2-25v-7?
Wednesday, November 6, 2013 at 7:03pm

Math
Find the points of intersection of the parabolas y=1/2x^2 and y=1-1/2x^2. Show that at each of these points the tangent lines to the two parabolas are similar Answer (+-1,1/2) Please show and explain all steps thank yo
Wednesday, November 6, 2013 at 7:02pm

math-fractions
last season a little league baseball team traveled a total of 133 miles. For their first game they traveled 16 2/3 miles; second game 2 1/6; third game 25 4/9; and their fourth game 32 1/3. How many miles did they travel for their final fifth away game? when I add it, all I ...
Wednesday, November 6, 2013 at 6:49pm

math
Lisa and her father stand next to each other on a sunny day. Lisa is 130 centimeters tall and her father is 200 centimeters tall. Lisa's shadow is 100 centimeters. How long is lisa's father's shadow to the nearest centimeter?
Wednesday, November 6, 2013 at 6:40pm

Math
The cost of renting a car for one day is $32 plus $.08 per mile. How much would it cost to rent a car for one day if the number of miles driven is 250?
Wednesday, November 6, 2013 at 6:19pm

math
beth travels 244 miles everyweek. she says she will travel 2,196 miles if she travels the same number of miles for the next 9 weeks.
Wednesday, November 6, 2013 at 6:06pm

math
A store has 2 times as many hooded sweatshirts as crewneck sweatshirts. The total number of sweatshirts is 36. How many hooded sweatshirts does the store have?
Wednesday, November 6, 2013 at 5:59pm

Jr Applied Math (Algebra II)
A landscaping company placed two orders with a nursery. The first order was for 13 bushes and 4 trees, and totaled $487.00. The second was for 6 bushes and 2 trees, and totaled $232.00. The bills do not list the per-item price. What were the costs of one bush and of one tree?
Wednesday, November 6, 2013 at 5:54pm

math
Hideki is collecting pennies . Each month in may, june, and july he put 200 pennies in a jug . He put 300 pennies in th jug in August and 300 in September. How many pennies did Hideki put in the jug between May and September ?
Wednesday, November 6, 2013 at 5:33pm

math
Laundry- detergent $7.99 T Flower- bouquet $3.99 T, A grocery store receipt shows 5% state tax due on laundry detergent and a flower bouquet. Does it matter whether the tax is calculated on each separate item or the total cost? Explain.
Wednesday, November 6, 2013 at 5:27pm

Math-Trigonometry
Show that if A, B, and C are the angles of an acute triangle, then tan A + tan B + tan C = tan A tan B tan C. I tried drawing perpendiculars and stuff but it doesn't seem to work? For me, the trig identities don't seem to plug in as well. Help is appreciated, thanks.
Wednesday, November 6, 2013 at 5:21pm

math
colored beads are placed in the following order 1 red,1 green;then 2 red,2 green;then 3 red, 3 green; and so on In all,how many of the first 100 beads are red?
Wednesday, November 6, 2013 at 4:48pm

math
What is the vertex of y=[-2x]?
Wednesday, November 6, 2013 at 3:43pm

MATH
Find the y- intercept of the graph of each function. y=3x+3
Wednesday, November 6, 2013 at 3:32pm

math
What's the opposite reciprocal of 1?
Wednesday, November 6, 2013 at 3:14pm

math for the office professional
one of your delivery trucks traveled 1,200 miles on 55 gallons of gas.yow many miles per gallon did the truck get?round off your answer to the nearest hundredth a.21.81 B.45.83C.45.84 D.21.82 my answer is d I know a is wrong
Wednesday, November 6, 2013 at 12:57pm

math for the office professional
convert 628 kilometers to miles.round off your answer to two decimal places A.1,010.65 B.1,010.64 C. 390.24 D.390.23 m y answer is c I know d is wrong .can someone please help
Wednesday, November 6, 2013 at 12:53pm

math
Ramesh has 150 shares of par value 10 each of a company which pays annual dividend of 15% at such a price that he receives 10% on his investment.what is the market value of share
Wednesday, November 6, 2013 at 12:05pm

math
Sum of following series 4.1+5.2+6.3+7.4+....52.49
Wednesday, November 6, 2013 at 12:02pm

Grd 12 Math
Can someone please help me work out how to get to the answer of: tanx + tan (pi-x) + cot (pi/2+x) = tan (2pi-x)
Wednesday, November 6, 2013 at 9:17am

math
The temperature on one day in January for Phoenix, AZ, is 52 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -23 degrees Fahrenheit. What is the difference between these two temperatures?
Wednesday, November 6, 2013 at 9:15am

Math - Trigonometry
Let f(x) be a polynomial such that f(cos theta) = cos(4 theta) for all \theta. Find f(x). (This is essentially the same as finding cos(4 theta) in terms of cos theta; we structure the problem this way so that you can answer as a polynomial. Be sure to write your polynomial ...
Wednesday, November 6, 2013 at 7:22am

Math/Science
Explain how you could determine, give the following 3 pieces of information, (you need all 3 together not each one individually) the radius of the Earth. 1)Jakarta and Port Moresby, the capital of pau New Guinea, are two cities on the equator. 2) A plane leaves from Port ...
Wednesday, November 6, 2013 at 1:31am

math
how do i find the percentage of a number
Wednesday, November 6, 2013 at 1:14am

math
find general solution of y¡±-y¡¯=squre of sinx by variation parameter
Wednesday, November 6, 2013 at 1:09am

math
So I need to solve this differential equation dy/dx = 1/(x+2) so i solved it like this dy = 1/(x+2)dx then i took the integral of both sides y= ⌠1/(x+2)dx ⌡ then performed a u sub u = x+2 du = 1dx y = ⌠du/u ⌡ y = ln abs(u)+c y = ln abs(x+2)+c but the ...
Wednesday, November 6, 2013 at 12:19am

Math
Solve for x -2 + 2x = -x + 2 + x
Tuesday, November 5, 2013 at 11:53pm

Math
An equation of the tangent line to the curve y=f(x)=x(4cosx−6sinx) at the point (3f(3)) is y =? Note: Please follow these instructions carefully: (a) Express f(3) and f(3) in terms of . Simplify those expressions by evaluating the exact values of sin(3) and cos(3). (b) ...
Tuesday, November 5, 2013 at 11:01pm

Math
Given 15 data items: 11, 15, 13, 16, 8, 8, 9, 10, 11, 4, 9, 6, 8, 3, 17 Calculate the: range variance standard deviation first quartile second quartile (median) third quartile My answers are: 1. Range :14 2. Variance: 15.7 3. 3.96 4. 8 5. 9 6. 13 I just want someone to check ...
Tuesday, November 5, 2013 at 10:59pm

Math - Trigonometry
If sin theta +cos theta =1.2, then what is sin^3 theta + cos^3 theta? Hmm...I don't understand how to proceed. I know I must apply a trig Identity, but which one? Thanks in advance
Tuesday, November 5, 2013 at 10:26pm

math
Real world problem were you multiply 120and75
Tuesday, November 5, 2013 at 10:05pm

Math
if you use $63.00 divided by 9 to estimate $62.59 divided by 9 $7.00 greater than or less than the exact answer? Explain
Tuesday, November 5, 2013 at 9:22pm

confused in math
1.20 with a line over 20 convert decimal to fraction, step by step detail because I am lost and confused
Tuesday, November 5, 2013 at 9:01pm

Math
26-17+15
Tuesday, November 5, 2013 at 8:51pm

math
.1515 repeat, I get 303/2000 and divide it to get the .1515 repeat, but in my book, it says the answer is 5/33, how is that
Tuesday, November 5, 2013 at 8:39pm

math
8x + 5y = -144 4x + y = -36
Tuesday, November 5, 2013 at 8:38pm

math
how do you convert a decimal to a fraction? 5.9 that repeats?
Tuesday, November 5, 2013 at 8:24pm

math
The shape of a patio is trapezoidal with a height of 9 ft and bases of 14 ft and 8 ft. What is the cost 24) of outdoor carpeting to cover the patio if the carpeting costs $2.50 per ft2?
Tuesday, November 5, 2013 at 8:02pm

Math
Which number of markers can not be divided equally except by giving to one person? A)4 B)12 C)19 D)39
Tuesday, November 5, 2013 at 7:50pm

Math
What is the prime factorization of 12? A.2^2*3 B.2^3*3 C.3*4^2 D.2*3*4
Tuesday, November 5, 2013 at 7:46pm

math
55n=35n
Tuesday, November 5, 2013 at 7:29pm

math
For the following sequence, which description shows the relationship between a term and n, its position in the sequence? 3,5,7,9,11.... A-Multiply by 2 and then subtract1 B-Multiply n by2 an then add1 C-Multiply n by 1 I believe it is b
Tuesday, November 5, 2013 at 7:14pm

math
the girls high school basketball team played 12 games. they won 6 more games than they lost. find the number of games the basketball team won.
Tuesday, November 5, 2013 at 7:11pm

math
Ben placed a stone in an empty rectangular tank, 50cm long and 40cm wide. He then filled the tank with water flowing from a tap at a rate of 10 liters per minute. it took 3 min to fill the tank to a depth of 18cm to cover the stone completely. Find the volume of the stone. ...
Tuesday, November 5, 2013 at 7:03pm

Math
A motorist traveling 55 mph is being pursued by a highway patrol car traveling 65 mph. If the patrol car is four miles behind the motorist, how long will it take the patrol car to overtake the motorist?
Tuesday, November 5, 2013 at 6:48pm

math
arrays and an expanded algorithm 23 x17 how do I solve this
Tuesday, November 5, 2013 at 6:46pm

Math
How much feet of border material is needed for a 12 feet by 18 feet garden?
Tuesday, November 5, 2013 at 6:11pm

business math
one-ninth of polymer plastics' sales are made in New England. If New England sales amunt to $6000,000, what are the total sales?
Tuesday, November 5, 2013 at 6:10pm

college math
Math homework please help!! 2. Suppose that people’s weights are normally distributed, with mean 175 pounds and a standard deviation of 6 pounds. Round to the nearest hundredth of a percent a. What percent of the population would weigh between 165 and 170 pounds? b. What ...
Tuesday, November 5, 2013 at 5:37pm

math
Suppose that people’s weights are normally distributed, with mean 175 pounds and a standard deviation of 6 pounds. Round to the nearest hundredth of a percent a. What percent of the population would weigh between 165 and 170 pounds? b. What percent of the population would...
Tuesday, November 5, 2013 at 5:31pm

math
A store gave away a $5 gift card to every sixth customer and a $10 gift card to every tenth customer.Which customer would be the first one to receive both a $5 and a $10 gift card?please help
Tuesday, November 5, 2013 at 5:22pm

math
what is 7 and 3over4 divided by 1 and 5over8
Tuesday, November 5, 2013 at 5:17pm

math
The weight of a can made from a machine is normally distributed with a mean of 25 grams and a standard deviation of 0.4 grams. What percentage of the cans from this machine would not meet the minimum required weight of 24 grams? Round to the nearest hundredth of a percent
Tuesday, November 5, 2013 at 4:54pm

Math
X^2+2x+1
Tuesday, November 5, 2013 at 4:43pm

Math
C^2+17c+16
Tuesday, November 5, 2013 at 4:41pm

math
2. Suppose that people’s weights are normally distributed, with mean 175 pounds and a standard deviation of 6 pounds. Round to the nearest hundredth of a percent a. What percent of the population would weigh between 165 and 170 pounds? b. What percent of the population ...
Tuesday, November 5, 2013 at 4:31pm

math
why couldn't the chicken find her egg
Tuesday, November 5, 2013 at 4:14pm

Math
The flag pole is 14 feet high it cast a shadow of 5 feet. Dan is six feet tall what high is his shadow
Tuesday, November 5, 2013 at 3:17pm

math
two computer disks and three notebooks cost $17 however, five computer disks an four notebooks cost $32.find the price of each
Tuesday, November 5, 2013 at 2:54pm

Math Help! Someone please help?:)
1. The sides of a square are increased by a scale of 6. The perimeter of the small square is 10ft. What is the perimeter of the larger sqaure? 2.5 ft, 10 ft, 60 ft, 120 ft 2. A map of Utah has a scale of 1 cm:30 mi. The boarder of Utah and Wyoming measures about 3.7 cm. How ...
Tuesday, November 5, 2013 at 2:26pm

Math Help? Check my answers.
1. r/5 = 9/21 r = 9 r = 2.14 r = 11.66 r = 37.8 2. A recipe calls for 3 cups of flour to make 3 dozen cookies. Use the proportion to calculate how much flour is needed to make 9 dozen cookies. 3cups/3dozen = xcups/9dozen 6 cups 3.5 cups 9 cups 12 cups 3. Chase sold 48 tickets ...
Tuesday, November 5, 2013 at 1:08pm

math
1-sin^2x/cosx = sin^2x/2sinx Please help me figure out this one, can you show all the steps, I am really confused. Your help is very much appreciated. Thanks
Tuesday, November 5, 2013 at 12:43pm

Math
If I I'm trying to find the average weight of a 2nd grade girl which would be the most effective and why? Mean, Median or Mode? If I'm trying to find the average cost of a home in a city which would be the most effective and why? Mean, Median or Mode? If I'm trying...
Tuesday, November 5, 2013 at 12:32pm

math
I put the wrong angle measure on my earlier question. It should have been... How many different triangles, if any, can be drawn with on 20 degree angle, one 45 degree angle, and one 115 degree angle. Thanks....
Tuesday, November 5, 2013 at 12:08pm

Math
Need help on the question below. How many different triangles, if any, can be drawn with on 20 degree angle, one 45 degree angle, and one 155 degree angle. Thanks....
Tuesday, November 5, 2013 at 11:52am

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