Branches of Math
Recent Math Questions
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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 1187 $7....
Sunday, March 1, 2015 at 11:57am
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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