Monday
March 2, 2015

Homework Help: Math

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Recent Math Questions

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Math
The bottom of a shopping bag measures 8 inches by 10 inches. The bag height of 12 inches. How much paper is needed to make the bad? A.256 in B.296 in C.512 in D.592 in Surface Area Of Prisms and Cylinders
Monday, March 2, 2015 at 1:47pm

Art
During which time period were artists keenly interested in using the golden ratio in their paintings? A.Baroque Period B.Oriental Period C.Futuristic Period D.Renaissance Period When the Greeks built the Parthenon its dimensions nearly matched the golden ratio which is the ...
Monday, March 2, 2015 at 11:48am

Math
What is the value of 15-7 2/5 =?
Monday, March 2, 2015 at 11:38am

Math
Roger bought a sandwich with half of his money and a candy bar with one fifth of his money. How much of his money did he spend?
Monday, March 2, 2015 at 11:17am

math
The line x plus 7y=5 cuts the circle x^2 plus y^2=15 at the points P & Q. Find: a) P & Q. b) the midpoint of PQ. (I don't know why, but the plus sign does not show after I submit d question so dats y I wrote it in words)
Monday, March 2, 2015 at 10:55am

math
Two ship P and Q left a port R at the same time.Q sailed on a bearing of 150 while P sailed on the north side of Q.After a distance of 8km and 10km by P and Q respectively,their dirtance part was 12km.find the bearing of P from R.
Monday, March 2, 2015 at 9:46am

math
find x and y given 120 3x (6y-12)
Monday, March 2, 2015 at 9:05am

To "WOK..."
Please put your School Subject in the School Subject box (Examples: math, science, algebra, geography). When all you put is one letter, most tutors are not inclined to open your post since you are not following instructions.
Monday, March 2, 2015 at 8:59am

Math
Hi! Can someone help me with this? Thanks! Directions: Solve this equation by doing it twice; one time using the substitution method and one time using the graphing method. x – 2y = 0 3x – y^2 = 0
Monday, March 2, 2015 at 8:42am

math
if x= 1¡Ì2 find (x+1/x)3
Monday, March 2, 2015 at 7:43am

general math
A father's age is three times the age of his childs. After five years of age, father's age childs would double the sum, the father's age - please help me for this question here is not given number of child.
Monday, March 2, 2015 at 5:40am

Math
0.6 of students walk to school. Of those 3/4 live within 1 mile of the school there are 640 students at the school. How many students walk to school and live 1 mile or farther from school? Thanks for the Help!
Monday, March 2, 2015 at 5:06am

Math
Phil Anthropist likes to give away money. One day he went to the park with a wad of cash. He gave $100 to a man feeding pigeons. He then gave half of his remaining money to a child eating an ice-cream cone. He then gave $50 to the balloon seller. He then bought a hot dog and ...
Monday, March 2, 2015 at 2:00am

math
If r = 7 m then d = what c = what
Sunday, March 1, 2015 at 11:35pm

Math
Pick any single digit number. Multipy it by 12,345,679. Then multiply the result by 9. What happens? Explain why this works.
Sunday, March 1, 2015 at 11:33pm

Math
When adding the square root of 16 and -8 which type of number is the sum? A. Integer B. Irrational number C. Radical D. Whole number
Sunday, March 1, 2015 at 11:28pm

math
A couple can afford to make a monthly mortgage payment of $850. If the mortgage rate is 2% and the couple intends to secure a 30-year mortgage, how much can they borrow? (Round your answer to the nearest cent.)
Sunday, March 1, 2015 at 11:10pm

Math
Hi! Can someone help me with this? Thanks! Directions: Solve this equation by doing it twice; one time using the substitution method and one time using the graphing method. x + 2y = 1 5x – 4y = -23
Sunday, March 1, 2015 at 10:55pm

math
Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed, is Sally correct? ...
Sunday, March 1, 2015 at 10:09pm

Math
Evelyn rolled two 1-6 cubes 72 times. How many times should she predict she will roll a sum of 5?
Sunday, March 1, 2015 at 10:03pm

math
Solve 6k^2-17k-3=0
Sunday, March 1, 2015 at 9:17pm

Math
x^3-x^2-36x+36=0
Sunday, March 1, 2015 at 9:13pm

Math
A student scores 74 out of 100 on a test,If the maximum score is 100. What score does the student need at least an average of 80?
Sunday, March 1, 2015 at 8:33pm

math
A spring is attached to the ceiling and pulled 12 cm down from equilibrium and released. The amplitude decreases by 17% each second. The spring oscillates 16 times each second. Find an equation for the distance, D the end of the spring is below equilibrium in terms of seconds, t.
Sunday, March 1, 2015 at 8:14pm

math
Two people start from the same point. One walks east at 4 mi/h and the other walks northeast at 3 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to three decimal places.)
Sunday, March 1, 2015 at 8:03pm

math
Option A $5.75 for each visit Option B Yearly membership for $99, plus $.50 for each visit write an inequality that can be used to determine the minimum number of times a person would need to visit the gym in a year in order for option B to be less expensive than option A. $5....
Sunday, March 1, 2015 at 7:50pm

Math
A Kenyan businessman bought goods from Japan worth 2, 950 000 Japanese yen. On arrival in Kenya custom duty of 20% was charged on the value of the goods. If the exchange rates were as follows: 1 US dollar = 118 Japanese Yen 1 US dollar = 76 Kenya shillings Calculate the duty ...
Sunday, March 1, 2015 at 7:38pm

math
The gradient of the tangent to the curve y= ax^3 + bx at the point ( 1, 1) is -5. Calculate the values of a and b
Sunday, March 1, 2015 at 7:27pm

math
Adam wants to compare the fraction 3/12, 1/6, and 1/3 he wants to order them from least to greatest and rewrite them so they all have the same denominator
Sunday, March 1, 2015 at 7:25pm

math
A retailer planned to buy some computers form a wholesaler for a total of Shillings 1,800,000. Before the retailer could buy the computers the price per unit was reduced by shillings 4,000. This reduction in price enabled the retailer to buy five more computers using the same ...
Sunday, March 1, 2015 at 7:21pm

Math
A Major League Baseball team has won 15 of its first 27 games. The team will play 162 games. At its current rate of winning, how many games will the team win?
Sunday, March 1, 2015 at 6:56pm

math
P (5,) and Q (-1, 2) are points on a straight line. Find the equation of the perpendicular bisector of PQ: y = mx+c
Sunday, March 1, 2015 at 6:13pm

math
solve (1+x)^2d^y/dx^2+(1+x)dy/dx+y=4cosh(x+1)
Sunday, March 1, 2015 at 5:34pm

Math
Winona needs to average 5.8 points from 14 judges to win the competition. The mean score of 13 judges was 5.9. What is the lowest score she can receive from the fourteenth judge and still win? I have no idea. Please help. Thanks
Sunday, March 1, 2015 at 5:31pm

math
a traffic sign casts a shadow 6ft long while a mailbox next to it casts a shadow 3ft long. if the traffic sin is 7 ft high how tall is the mailbox
Sunday, March 1, 2015 at 5:00pm

math
Give that x is angle in the first quadrant such that 8sin 2x + 2cosx – 5 = 0 Find: cosx tanx
Sunday, March 1, 2015 at 4:59pm

Math
Joe has to coins in his pocket that total $.55 one corn is not a nickel what are the coins
Sunday, March 1, 2015 at 4:27pm

math
A town N is 340 km due west of town G and town K is west of town N. A helicopter Zebra left G for K at 9.00 a.m. Another helicopter Buffalo left N for K at 11.00 a.m. Helicopter Buffalo traveled at an average speed of 20 km/h faster than Zebra. If both helicopters reached K at...
Sunday, March 1, 2015 at 4:25pm

Algebra 2 Honors
Hi, I'd like some help with one of the questions on my math homework. It has to do with a right triangle. I'm not sure how to set it up or if I should use the pythagorean theorem. This is the question: Vista county is setting aside a large parcel of land to preserve it...
Sunday, March 1, 2015 at 4:25pm

Math
Find the volume of the solid generated by rotating the area bounded by y=x^2 and x=y^2 about the x-axis.
Sunday, March 1, 2015 at 4:17pm

Math
The curves y=sinx and y=cosx intersects twice on the interval (0,2pi). Find the area of the region bounded by the two curves between the points of intersection.
Sunday, March 1, 2015 at 4:16pm

Math
Find the first 5 terms. a sub 1 = 4 and a sub n = 0.5a (sub n - 1) + 1 1.5, 2, 2.5, 3, 3.5
Sunday, March 1, 2015 at 4:14pm

Math
find the area in the first quadrant bounded above by y=sinx, below by the x-axis, and to the right by x=pi/2 is divided into two equal parts by the line x=a. Find a.
Sunday, March 1, 2015 at 4:14pm

Math
Find the first five terms: a sub n = 2^n - 5 -3, -1, 3, 11, 27?
Sunday, March 1, 2015 at 4:11pm

math
the flour power bakery makes 200 cherry cheesecakes at a cost of $2.55 each. if a spoilage rate of 3% is anticipated, at what price should the cakes be sold to achieve a 35% markup based on cost?
Sunday, March 1, 2015 at 3:57pm

math
A cow is tethered by a piece of rope 50 meters long to the side of a rectangular barn. The rope is fastened to a hook (on the barn) that is located 20 meters from the corner along the longest side of the barn which measures 70 meters by 20 meters. Over how much ground (outside...
Sunday, March 1, 2015 at 3:42pm

math
write an equation where the perimeter is 64 and the length is 4 less than twice the width
Sunday, March 1, 2015 at 3:00pm

Math Calculus (ALEVEL)
Find the equation of the tangents to the curve x^2+3x-2y^2=4 at the points where the curve crosses the x- axis
Sunday, March 1, 2015 at 2:44pm

math
solve (1+x)^2d^y/dx^2+(1+x)dy/dx+y=cosh(x+1)
Sunday, March 1, 2015 at 1:52pm

math
if you 99 lines on a piece of paper so that no two lines are parallel to each other and mo three lines pass through the same point,how many times will they intersect?
Sunday, March 1, 2015 at 12:12pm

business math
Workers who manufacture shirts are sometimes paid based on the number of shirts they produce. Compute Lyle's gross pay if she made 380 shirts. The rate per shirt is given by the differential piecework schedule below: Pay Level Items Produced Rate per Item 1 1–187 $7....
Sunday, March 1, 2015 at 11:57am

math
vani scores 90% in 5 subjects and veena score 80% in 4 subjects who scores more?
Sunday, March 1, 2015 at 11:29am

math
The longest side of a triangle is six more units that the shortest side. The third side is twice the length of the shortest side. If the perimeter of the triangle is 25 units, write and solve an equation to find the length of all three sides of the triangle.
Sunday, March 1, 2015 at 11:15am

math
How can I solve the diagonal of a cube with a formula of s square root of 3, if the given is csc x = 2 ? how will i solve for the side of the cube to get its diagonal?
Sunday, March 1, 2015 at 10:57am

Math
Find the volume of the solid generated by rotating the area bounded by y=x^2 and x=y^2 about the x-axis.
Sunday, March 1, 2015 at 10:20am

Math
The curves y=sinx and y=cosx intersects twice on the interval (0,2pi). Find the area of the region bounded by the two curves between the points of intersection.
Sunday, March 1, 2015 at 8:41am

math
a object that is 3.9 feet tall cast a shadow that is a 11.7 feet long. how long in feet would the shadow be in feet if the object is 16.5 feet tall
Sunday, March 1, 2015 at 8:26am

math
If you 99 lines on a piece of paper so that no two lines are parallel to each other and no three lines pass through the same point, how many times will they intersect?. Show all your calculations leading to the answer
Sunday, March 1, 2015 at 7:22am

math
16000000=10r-r^2. Calculate the maximum value of r.
Sunday, March 1, 2015 at 4:33am

math
there are 3 numbers, a,b and c. the sum of a and b is 15.31 , the sum of b and c is 9.54,and the sum of a and c is 5.15. find the sum of a,b and c.
Sunday, March 1, 2015 at 1:51am

Math
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 125 and a variance of 25. The material is considered defective if the breaking strength is less than 113.5 pounds. What is the probability that a single, randomly selected ...
Sunday, March 1, 2015 at 1:01am

Math
To make 4 1/2 gallons of ice cream, it takes 6 3/10 gallons of milk. How many gallons of milk does it take to make one gallon of ice cream?
Saturday, February 28, 2015 at 8:53pm

Math
The sum of the ages of Dorothy and Dona is 41. In five years, Dorothy will be twice as old as Dona. Find their ages 3 years ago.
Saturday, February 28, 2015 at 7:08pm

math
A ship leaves an island (5°N, 45° E) and sails due east for 120 hours to another island. Average speed of the ship is 27 knots. Calculate the distance between the two islands In nautical miles In kilometers
Saturday, February 28, 2015 at 6:32pm

Vectors Math
I was given this info r=1.5 m d=3 m F= 50 N angle= 110 degrees 1. What torque is APPLIED ? T=Fsin T= (1.5)(50)sin(110) T=70 N m 2. At what angle would enough force be applied to achieve maximum toque? T=Fsin T= (1.5)(50)sin(10) T=13.0 N m 3. If someone continues to push with a...
Saturday, February 28, 2015 at 5:31pm

math
If the elevator has an upward acceleration of 2.60m/s^2 and the balance reads 60.0 N, what is the true weight of the fish?
Saturday, February 28, 2015 at 5:03pm

Math
Write a possible explicit rule for the nth term. 1/2, 1/4, 1/6, 1/8, 1/10
Saturday, February 28, 2015 at 4:54pm

Math
Help me set up the matrices for this! I can solve it, but having a difficult time getting the matrix set up. A pharmacist mixes together three types of vitamin tablets. Each Tablet A contains, among other things, 12 mg of niacin and 10 I.U. of vitamin E. The amounts for a ...
Saturday, February 28, 2015 at 4:29pm

Math
Write a possible explicit rule for the nth term. 20, 40, 80, 160, 320 a sub n = 20(2)^n-1?
Saturday, February 28, 2015 at 3:33pm

math
I am solving a problem and have -cos(a)=-1/2. How do I solve for a?
Saturday, February 28, 2015 at 12:14pm

Math
3m/4n * 2n/5m^2
Saturday, February 28, 2015 at 11:41am

Math
A multiple - choice quiz contains 5 questions with 4 choices for each answer. A student passes the quiz if they get at least an 80% on the quiz . If a student guesses on every question , find the probability that she passes the quiz . I have tried c(20,8)(1/4)^8(3/4)^12 c(20,9...
Saturday, February 28, 2015 at 11:11am

math
Divide 12 into two parts such that the sum of their square is 74?
Saturday, February 28, 2015 at 6:21am

math
Find the roots of the quadratic equations x^2 - 1/12x -1/12 = 0 ?
Saturday, February 28, 2015 at 5:11am

math
Write and solve an equation to find the complement of an angle that measures 42 degrees. THX!
Friday, February 27, 2015 at 11:11pm

math
To make 4 1/2 gallons of ice cream, it takes 6 3/10 gallons of milk. How many gallons of milk does it take to make one gallon of ice cream? Do I divide 6 3/10 by 4 1/2
Friday, February 27, 2015 at 10:46pm

math
Each homeroom of a middle school receives 1/12 of a 5/6 acre of land. How many homerooms receive a plot of land?
Friday, February 27, 2015 at 10:38pm

Math
In order to properly design a heating system for a greenhouse, the volume of air in the building needs to be determined. Find the volume of air in the greenhouse below. (3 pts)
Friday, February 27, 2015 at 10:01pm

math vectors
Use a specific example to prove that the cross product is also not associative. That is, use three specific vectors in 3-space to show that Vector a×(Vector b × Vector c) is not equal to (Vector a × Vector b) × Vector c. Can you help me think of an ...
Friday, February 27, 2015 at 7:29pm

Math Vectors
Verify (a + a) × (a+ b) = 0⃗ . What can be said about two vectors whose cross product is the zero vector a x b = i j k 3 -3 1 -12 12 -4 = i ( (-3) · (-4) - 1 · 12 ) - j ( 3 · (-4) - 1 · (-12) ) + k ( 3 · 12 - (-3) · (-12...
Friday, February 27, 2015 at 7:02pm

math
During a severe thunderstorm, Tim saw a flash of lightning and then six seconds later heard a clap of thunder. The speed of sound is 1088 ft/sec. How far is Tim from the lightning? Nearest Thousand Feet.
Friday, February 27, 2015 at 6:06pm

math
A uniform horizontal beam weighing 136 kg is 10.4 m long and is supported by columns at each end. A vertical load of 1275 kg is applied to the beam x metres from the right end. Find x so that the reaction at the left column is 540 kg. Round your answer to 2 decimal places
Friday, February 27, 2015 at 5:55pm

word math
len puts ten marbles in each bag. two tenth are stripped.if len makes ten bags of marbles how many stripped marbles do he need?
Friday, February 27, 2015 at 5:27pm

Math vectors
Verify (a + b) × (a + b) = 0 What numbers can go into the equation as vector A(coordinates) and what numbers can go into the equation as vector B (coordinates) in order for the answer to be 0???
Friday, February 27, 2015 at 5:08pm

math
It is recommended that 3/5 of the calories a person consumes come from carbohydrates. If 1/12 of these calories should be from fiber, what fraction of the number of calories should come from fiber?
Friday, February 27, 2015 at 3:09pm

math
Nathan deposited 7/9 of his allowance into his savings account. He spent the remaining amount, or $2.50. How much did Nathan deposit into his savings account? Should I multiply 7/9 *2 1/2 or 7/9 * 250
Friday, February 27, 2015 at 3:01pm

Math vectors
What can be said about two vectors whose cross product is the zero vector?
Friday, February 27, 2015 at 2:53pm

math
having a spacey moment...can anyone show me how to solve for Er? Er-1/Er+2 = X
Friday, February 27, 2015 at 2:00pm

Math
Davida bought a pair of earrings, each in the shape of an isosceles triangle with equal side lengths of 24 mm and a base length of 16 mm. She used one earring to make another pair of earrings, similar in shape, with the base length equal to 11 mm. What is the length of the ...
Friday, February 27, 2015 at 1:34pm

Math vectors
Verify using an example that a(b+c) is not equal to ab+ac. (This means that addition does not distribute over the dot product.) My solution: is this correct? a(b+c)= ab+ac is ALWAYS true for whatever numbers you substitute let a = 16 b = 3 and c = 5 so LHE = a/(a + b) = 16 / (...
Friday, February 27, 2015 at 12:28pm

Business math
A watch with a list price of $889.00 is sold by a wholesaler at a net cost of $545.75. Find the single trade discount rate being offered. round to the nearest tenth of a percent 889.00*61.4? since trade discount equals list price * trade discount percentage? 54.58 would be the...
Friday, February 27, 2015 at 12:21pm

math
At 8 A.M., Dylan and his neighbor, Mickey, drove in their cars to a city that was 240 mi. away from their neighborhood. When Dylan reached the city, Mickey had 40 mi. to go. He finally completed the trip 48 minutes later. a) How long did it take Mickey to drive to the city? b...
Friday, February 27, 2015 at 12:09pm

math
Suppose you deposit $350 in a bank account that pays 6% annual simple interest. Find the interest earned in 4 months and in 1 year.
Friday, February 27, 2015 at 11:53am

math
Hi, How do I improve my math skills? I can't calculate in my head (I.e 2x43), I would actually have to write it down to solve it. I took pre-calc, calc and didnt have problem understanding. I don't know what is wrong. what should I do?
Friday, February 27, 2015 at 11:46am

math
when asked how many pennies she had a collector said If I arrange them in stacks of five, none are leftover if I arrange them in stacks of six, none are leftover if I arrange them in stacks of seven one is left over. What is the least number of coins she could have
Friday, February 27, 2015 at 10:53am

math
The rental rate on a car is $40.00 per day and 30¢ per mile. How much does Raoul pay for renting this car for 2 days and driving a total of 150 miles?
Friday, February 27, 2015 at 10:24am

math
in number 13,407.036 there are two 3's explain how the values of the 3's are related?
Friday, February 27, 2015 at 7:58am

7th grade math
Can you help with geometry? 1. Sally constructs a triangle with one side 6 inches long and another side 8 inches long. What is the 3rd side? (haven't learned Pythagorean theorem) Ans: 6 + x > 8 x > 2 6 + 8 > x 14 > x 8 + x > 6 x > -2 so, x must be > 2...
Friday, February 27, 2015 at 7:31am

Math
What is the probability of getting a number larger than 10 for the first time on the third roll
Friday, February 27, 2015 at 2:26am

math fractions
Rogelio has 3 one-dollar bills, 5 quarters, 4 dimes, 2 nickels, and 9 pennies. What fraction of the coins are quarters?
Friday, February 27, 2015 at 12:38am

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