Tuesday

October 21, 2014

October 21, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

The amount of paint an electric paint sprayer applies varies directly with time. A sprayer is set to apply 0.5 gallon in 2.5 minutes. Write an equation that gives the amount P of paint as a function of the time T. How much paint is applied if the sprayer is operated for 20 ...
*Tuesday, September 23, 2014 at 5:46pm*

**Math**

Felix wants to get at least one hour of exercise each day Today he has run for 40 minutes. Write an inequality to show how much longer he needs to exercise to reach his goal 40+e≥ 60 e≥ 20
*Tuesday, September 23, 2014 at 5:45pm*

**Math**

Waynes homework is to solve at least 20 questions from his textbook so far he has completed 9. Write an inequality to show how many more he needs to complete 9+q ≥ 20 q ≥ 11
*Tuesday, September 23, 2014 at 5:44pm*

**Math**

A satellite will be released into an orbit of more than 400 miles above the earth. the rocket is carrying it is currently 255 miles above earth write and solve an inequality to show how much higher the rocket must climb before it releases the satellite 255+m>400 m>145
*Tuesday, September 23, 2014 at 5:43pm*

**Math**

sumiko is allowed to watch no more than 10 hours of televisione ach week she has watched 4 hours of television already. write and solve an inequality to show many more hours of television sumiko can watch 10≤4+h
*Tuesday, September 23, 2014 at 5:35pm*

**Math**

If 1/3 is equal to 2/6 how come my teacher says it is equal to 5/8?
*Tuesday, September 23, 2014 at 5:31pm*

**math**

any number that can be expressed as the ratio of 2 integers a/b, where b does not equal 0, is a rational number
*Tuesday, September 23, 2014 at 5:29pm*

**MATH-Help! **

A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth will be 2 millimeters....
*Tuesday, September 23, 2014 at 5:28pm*

**math**

2a÷4=3 .....is this answer correct: 2a=3×4 2a=12 2a÷2=12÷2 a=6
*Tuesday, September 23, 2014 at 5:18pm*

**Math **

Jasmine has 8 pack of candle wax to make scented candles. Each pack contain 14ounces of wax. Jasmine uses 7 ounces of wax to make one candle . How many candles can she make
*Tuesday, September 23, 2014 at 5:10pm*

**math**

A pair of intersecting planes ______ intersect in exactly one point? A- always B- sometimes C- never D- not enough information I think A- always, but I do not know for sure.
*Tuesday, September 23, 2014 at 5:02pm*

**math**

Samy bought 5 1/3 lb of apples to make some apple pie. What is the weight of the apples written as a decimal?
*Tuesday, September 23, 2014 at 4:37pm*

**Math**

Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 15, 42, 53, 7, 9, 12, 14, 28, 47 A. 29.1 B. 16.6 C. 17.8 D. 15.8 is it C
*Tuesday, September 23, 2014 at 4:11pm*

**Math**

Explain how to use hundredths grids to subtract 1.65 - 0.98.
*Tuesday, September 23, 2014 at 3:35pm*

**Math**

Show that the set [(3,-2,4),(1,2,-1), (-6,4,-8) is linearly dependent by writing a non-trivial liner combination of the vectors that equals the zero vector. After some calculations I got t1=2, t2=0 and t3=1, but its my understanding that if a set is dependent, none of the t&#...
*Tuesday, September 23, 2014 at 2:59pm*

**math**

the expression that is equivalent to -2(x - 7).
*Tuesday, September 23, 2014 at 2:57pm*

**Math Algebra**

At a shoe store, a salesman earns a weekly salary of $150. A salesperson is it also paid 2$ each pair of shoes he or she sells during the week.
*Tuesday, September 23, 2014 at 2:52pm*

**Math**

The sine ratio is positive in the first and what other quadrant?
*Tuesday, September 23, 2014 at 2:43pm*

**Math**

In an examination, 1/5 of the candidates failed. It is known that 240 candidates passed. How many candidates took the examination
*Tuesday, September 23, 2014 at 2:37pm*

**Math**

In a test a student scored 51 marks out of 80. Express his mark as a percentage to the nearest whole percent
*Tuesday, September 23, 2014 at 2:24pm*

**Math**

1/5 of the people in a village have been inoculated against measles. If 50 people have been inoculated, what is number of people in the village.
*Tuesday, September 23, 2014 at 2:21pm*

**Math**

Bricks have a mass of 1.57 kg each. How many bricks are there in 5whole number 1/4tonnes ?
*Tuesday, September 23, 2014 at 2:17pm*

**math**

The Sandersons are planning to refinance their home. The outstanding principal on their original loan is $100,000 and was to amortized in 240 equal monthly installments at an interest rate of 11%/year compounded monthly. The new loan they expect to secure is to be amortized ...
*Tuesday, September 23, 2014 at 1:55pm*

**Math**

Two wires are connected to a tower at the same point on the tower. Wire 1 makes an angle of 45° with the ground and wire 2 makes an angle of 60° with the ground. b) Which wire is longer? Explain. (2 marks) c) If the point where the two wires connect to the tower is 35 ...
*Tuesday, September 23, 2014 at 12:58pm*

**math**

The wave heights h in the open sea depend on the speed v of the wind and the length of time t that the wind has been blowing at that speed. Values of the function h = f(v, t) are recorded in feet in the following table. the values that you need on the table are.. 20hr/30 knots...
*Tuesday, September 23, 2014 at 12:58pm*

**Math**

The expression cos 60° is equivalent to sin ?
*Tuesday, September 23, 2014 at 12:58pm*

**math**

-5 an 7/12 divided by 12 equals
*Tuesday, September 23, 2014 at 12:39pm*

**math**

a radio uses one-third the number of watts used by lamp, and a heater that uses 15 times as many watts as a lamp. when all are in use, the total electrical power is 1.1 kilowatts how many does the radio use?
*Tuesday, September 23, 2014 at 12:38pm*

**Math Help**

Choose the word phrase that can be represented by 2 – p. the difference of a number p and 2 the quotient of 2 and a number p 2 more than a number p 2 decreased by a number p 2. Which word phrase could represent the variable expression 1/2a + 4? 4 more than half Chris’...
*Tuesday, September 23, 2014 at 11:17am*

**math**

"Just look at the graph," the player's agent said. "Phil's hits have doubled since last year. We are looking for a large raise and a long contract." Look at the graph. Graph: i.imgur. com/wY0gqtQ.png How can you redraw this graph so it appears that ...
*Tuesday, September 23, 2014 at 8:31am*

**math**

Which number of players can be arranged in the shape of square?
*Tuesday, September 23, 2014 at 7:24am*

**math**

The least common multiple of two numbers is 60 and one of the numbers is 7 less than the other number. What are the numbers? Justify your answer.����
*Tuesday, September 23, 2014 at 1:46am*

**Math**

Solve the given quadratic equation exactly using the quadratic formula. Write the solutions in its simplest form. Using a calculator, determine all irrational solutions to the nearest thousandth. Separate the solutions with a comma and list the smaller one first. For the ...
*Tuesday, September 23, 2014 at 1:19am*

**math**

What are the coordinates of the reflection of (a, b) over the y-axis?
*Tuesday, September 23, 2014 at 1:16am*

**Math**

Solve the given quadratic equation exactly using the quadratic formula. Write the solutions in its simplest form. Using a calculator, determine all irrational solutions to the nearest thousandth. Separate the solutions with a comma and list the smaller one first. For the ...
*Tuesday, September 23, 2014 at 1:01am*

**Math**

27 3 5 2 = 19 I am trying to determine what symbol I need between each number to make the sentence true. +, - X or / I am not clear if I can use the same symbol multiple times in the equation.
*Monday, September 22, 2014 at 11:24pm*

**math**

A metal sphere has a mass of 1 kg. 1 cubic centimeter of this metal has a mass of 4.8 grams. find the radius. how do you work this out?
*Monday, September 22, 2014 at 11:10pm*

**math**

Explain why and when we would need to use LCM and GCD? Share, describe and summarize 4 examples of both.
*Monday, September 22, 2014 at 11:05pm*

**math**

Alba asked why we don't talk about LCM and GCM. How do you answer?
*Monday, September 22, 2014 at 10:56pm*

**math**

what are 3 fractions that have the same product when multiplied explain you answr
*Monday, September 22, 2014 at 10:22pm*

**Math**

How do I calculate this problem? Add the operation signs and parentheses where needed. The number are 6 , 5 , 9 and 2 that equal 77 .
*Monday, September 22, 2014 at 10:21pm*

**Math**

using four different digits, what is the least sum you can get when you add two 2-digit numbers? Write your problem
*Monday, September 22, 2014 at 10:19pm*

**math**

ann takes a taxi at 2.10 per mile and she gives the driver a 5.00 tip she spend a total of 49.10 write an equation to represent total cost in terms of distance
*Monday, September 22, 2014 at 10:17pm*

**math**

Marianne buys 16 bags of potting soil that comes in 5/8 pound bags a.how many pounds of potting soil does she buy? b. if her father calls and says he needs 13 pounds of potting soil, how many additional bags should she buy?
*Monday, September 22, 2014 at 10:16pm*

**math**

use the digits 3,5 and 7 to make two three-digit number with the greates possible sum.
*Monday, September 22, 2014 at 10:10pm*

**Math**

The Hotel Regal has 600 rooms. Currently the hotel is filled . The daily rental is $ 250 per room. For every $ 4 increase in rent the demand for rooms decreases by 4 rooms. Let x = the number of $ 4 increases that can be made. What should x be so as to maximize the revenue of ...
*Monday, September 22, 2014 at 10:00pm*

**math**

he sales goal for your store this week is $22,682. The sales goal for your store this week last year was $20,128. Your store has averaged 1775 transactions per week for the last four weeks. What is the percent change in your sales goal from this week last year to this week ...
*Monday, September 22, 2014 at 9:55pm*

**math**

If the sun is aplroximantely 1.5×10^(11) meters from Earth, what is the approximate distance from Earth to Mars.
*Monday, September 22, 2014 at 9:31pm*

**math**

A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail starts moving?
*Monday, September 22, 2014 at 9:19pm*

**Math**

Sara has some fish, 2 birds, and 5 hamsters. She has 6 fewer hamsters than fish. How many fish does she have?
*Monday, September 22, 2014 at 8:55pm*

**Math**

Maira drives at a constant speed for 3 hours and travels 175 miles. how far would she drive in 4.5 at the same speed?
*Monday, September 22, 2014 at 8:54pm*

**Basic math question**

Evaluate the square root of 9604 using prime factorization
*Monday, September 22, 2014 at 8:38pm*

**math**

Bella had 1/3 of a wall to paint.she painted 1/4 of what was left green and 1/2 yellow.what is the area of the region Bella.has not yet painted?
*Monday, September 22, 2014 at 8:38pm*

**Math**

A stack of 33 CDs is 1.5 inches high. How many CDs would be in a stack that is 3.5 inches high?
*Monday, September 22, 2014 at 8:34pm*

**math**

The Least Common Multiple of two numbers is 60, and one of the numbers is 7 less than the other number. What are the numbers? Justify your answer.
*Monday, September 22, 2014 at 8:09pm*

**Math**

Add the operation signs and parentheses where needed. 6 5 9 2 = 77
*Monday, September 22, 2014 at 7:58pm*

**Math**

A circus performer walks on a tightrope 25 ft above the ground. The tightrope is supported by two beams and two support cables. If the distance between each beam and base of its support cable is 15 ft, what is the length of the support cable?
*Monday, September 22, 2014 at 7:48pm*

**math **

estimate each square root to one decimal place Ex what is the square root of 15
*Monday, September 22, 2014 at 7:47pm*

**Math**

Explain how you can solve 8x8 if you know how to multiply with 4 but not how to multiply with 8.
*Monday, September 22, 2014 at 7:29pm*

**Math**

scott owns a manufacturing company that produces two models of entertainment centers. the athens requires 4 feet of fancy molding and takes 4 hours to manufacture. The barcelona needs 15 feet of molding and 3 hours to manufacture. In a given week, there are 120 hours of labor ...
*Monday, September 22, 2014 at 6:53pm*

**math**

(1,0) (3,4) (5,8) (7,12) what would be the output value when the input value is 12?
*Monday, September 22, 2014 at 6:49pm*

**Math**

Mount Baldy is the highest peak in the White Mountains of eastern Arizona. Its elevation is divisible by 3 and 9.Is the elevation 11,603;11,503;or 11,403 feet? Explain your answer,using the rules of divisibility.__________
*Monday, September 22, 2014 at 5:59pm*

**Math**

Aztec Peak in Arizona is the highest mountain in the Sierra Ancha Mountain Range. If the elevation of Aztec Peak is divisible by 2, is the elevation 7,963 or 7,964 feet? Explain your answer,using the rules of divisibility.______________
*Monday, September 22, 2014 at 5:56pm*

**math**

Daphne gave away 3 more than half her apples. She gave away 17 apples in all. how many apples did she have originally?
*Monday, September 22, 2014 at 5:52pm*

**math**

Add the operation signs and parentheses where needed. 6 5 9 2 = 77
*Monday, September 22, 2014 at 5:51pm*

**Math**

The movie theater donates 12% of its sales to chairty, From Cassie's purchases, the theater will donate at least $2.15 Which inequality below shows the amount of money m that Cassie spent at the refreshment stand A. m greather than or equal to 17.92 B.m less than or equal ...
*Monday, September 22, 2014 at 5:50pm*

**math**

Follow the order of operations and find the missing number: 20+5 x(?+6)-12/2=64
*Monday, September 22, 2014 at 5:49pm*

**math**

find the product of 27*60.then explain how you would use mental math to find the product of 27*600.
*Monday, September 22, 2014 at 5:31pm*

**math**

Meredith picked 4 times as many green peppers as red peppers. If she picked a total of 20 peppers, how many green peppers did she pick?
*Monday, September 22, 2014 at 5:25pm*

**math**

give three numbers whose product is about 9000
*Monday, September 22, 2014 at 5:18pm*

**Math**

Jason is a salesperson in the electronics department store. He is 38% short of his goal for the week. His goal is to earn %450. For each CD player he sells, he earns $57. How many CD players does he need to sell in order to meet his goal?
*Monday, September 22, 2014 at 4:16pm*

**Math**

A traditional Haida hand drum has a diameter of 14 7/8 in. and is 3 in deep. What is the minimum amount of hide used to make the drum if the hide covers only the top and lateral surfaces? PLEASE HELP!! Thank you
*Monday, September 22, 2014 at 3:35pm*

**Math**

Five added to 4 times a number is equal to 9 less than 2 times the number. 9x + 2 = 5x + 4 5x + 4 = 9x - 2 *my answer 4x - 5 = 2x + 9 4x + 5 = 2x - 9
*Monday, September 22, 2014 at 2:40pm*

**Math**

A football is thrown by a quarterback, the footballs height in feet h with respect to time in seconds T can be modeled using your quadratic function. You want to know when the football will be 7.5ft in the air because that's about the right height that your favorite ...
*Monday, September 22, 2014 at 2:07pm*

**Math**

14+2m = 4m - 16 (no multiple choice) I don't understand it 4(x +2) = 14 - 2(3 - 4x) (no multiple choice) Eight subtracted from 4 times a number is equal to 4 less than 6 times the number. (not multiple choice) my answer is 8x - 4 = 4x - 6
*Monday, September 22, 2014 at 1:53pm*

**Math**

Which of the following triangles cannot be solved using the sine law? a) angle a= 28 degrees, angle b= 75 degrees, side a= 24 cm b) side a=4 cm , side b= 11 cm c) angle a=28 degrees, angle c= 34 degrees , side b=5 cm d) angle b= 29 degrees, side b=5 cm, side c=18 cm
*Monday, September 22, 2014 at 12:19pm*

**Math**

Alice, Bob, and Charlie are three siblings with ages a, b, and c respectively. Their combine age is 18 years. Charlie is older than Bob. Alice's age is equal to twice the difference between Bob's and Charlie's ages. Bob's age is equal the average of Alice's...
*Monday, September 22, 2014 at 12:02pm*

**Math**

Find the locus of points that satisfy (a) |z+1| = |z+i| (b) Re z = |z-1| and sketch them in the complex plane.
*Monday, September 22, 2014 at 12:00pm*

**math**

Ruth buys 20 pencils for $20. some cost $4,some $0.25 and some $.50 each. at least one of each. How many of each price?
*Monday, September 22, 2014 at 11:59am*

**math**

Four monkeys ann,bob, carl and don set of to gather bananas after collecting their bananas they tired and fell a sleep Ann woke up first and ate 1/3 bob ate 1/3 carl ate 1/3 and don ate 1/4 He left 12 bananas for his 3 friends how many banana did monkeys gather all?
*Monday, September 22, 2014 at 10:42am*

**math**

A student is attempting to factor a polynomial. Sample mathematical work is shown below. Which statement best applies to the sample mathematical work? Given 3x + 6, the factors of the first term are 3 and x, and the factors of the second term are 1, 2, 3, and 6. Thus, the ...
*Monday, September 22, 2014 at 9:19am*

**Math**

Bobby has some marbles.one-third of them are blue.one-half of them are red and the rest are green.if he has 7 green marbles, how many marbles does have altogether?
*Monday, September 22, 2014 at 7:34am*

**Trigonometry (Math)**

From a point 5m. above the water surface, the angle of elevation of the top of a certain tree is 40°10' while the angle of depression to the foot of the tree is 63°20'. Find the height of the tree and the distance from the point of observation. -Complete ...
*Monday, September 22, 2014 at 7:24am*

**Math**

For y=3 +7 cos 5 (theta - 28 degrees) Find y when theta=321 degrees
*Monday, September 22, 2014 at 7:09am*

**Math**

Show that a triangle with sides 3,4,5 inches long is a right triangle. Find the measure of the larger acute angle
*Monday, September 22, 2014 at 6:50am*

**Math**

Show that a triangle with sides 3,4,5 inches long is a right triangle. Find the measure of the larger acute angle
*Monday, September 22, 2014 at 6:50am*

**math**

Find the pressure exerted by a waterbed with dimensions of 2 m x 2 m which is 30 cm thick. (hint: use density of water)
*Monday, September 22, 2014 at 6:29am*

**math**

an apple and a pear cost 25 pesos,a pear and a banana cost 19 pesos and apple and banana cost 16.how much i spend if i buys 1 apple,1 pear and 1 banana?
*Monday, September 22, 2014 at 6:18am*

**English**

What are you going to do for your home this weekend? 1. I am going to clean the windows this weekend. 2. I am going to clean the floor with a mop. 3. I am going to mop the floor. 4. I am going to vacuum the living room. 5. I am going to clean the living room with a vacuum ...
*Monday, September 22, 2014 at 5:54am*

**math**

Yasmin wants to serve 150ml of juice to each of 15 guests. How many 500ml cartons of juice she buy? How much juice will she be left after serving her guests?
*Monday, September 22, 2014 at 5:45am*

**Math**

What is a1 if a33 is equal to -2p and a74 = 26p? Our topic is arithmetic series and sequence. Thanks.
*Monday, September 22, 2014 at 4:01am*

**Math Help Please**

ABC Company is about 1614 feet tall. How long would it take an object falling freely from the top to reach the ground? Use a = 16t^2 I would appreciate any help. ^_^
*Monday, September 22, 2014 at 12:56am*

**Math**

A rectangular field is to be subdivided in 6 equal fields. There is 1200 feet of fencing available. Find the dimensions of the field that maximizes the total area. (List the longer side first) Width = feet Length = feet What is the maximum area ? Area =
*Monday, September 22, 2014 at 12:50am*

**math**

Benjamin and Bob are marathon runners on a run from landmarks P to Q. Benjamin runs half the way and walks the other half. Bob runs half the time, and walks the other half. The two run at the same speed and walk at the same speed. Who finishes first?
*Monday, September 22, 2014 at 12:43am*

**Math**

A ball is thrown up at the edge of a 550 foot cliff. The ball is thrown up with an initial velocity of 87 feet per second. Its height measured in feet is given in terms of time t, measured in seconds by the equation h = -16 t^2 + 87 t + 550 a. How high will the ball go and how...
*Monday, September 22, 2014 at 12:41am*

**Math**

Find the vertex of the parabola y = f(x)= x^2 + 8 x - 11 x coordinate = y coordinate = Graph this function and estimate the x intercepts to the nearest tenth. Give your answers in order. x intercept one = x intercept two =
*Monday, September 22, 2014 at 12:23am*

**math**

The ratio of boys to girls is 3 to 7. If there are 200 more girls than boys, how many boys are there? Use a tape diagram to solve.
*Monday, September 22, 2014 at 12:18am*

**Math**

3^2=12/(6-3)*8
*Sunday, September 21, 2014 at 11:56pm*

**math**

Nala and her cousin agreed that they would each mow one-half of the lawn. The lawn is a 25' by 45' rectangle. The lawn mower cuts a path two feet wide. Nala starts at one corner and mows a path completely around the outside, and then continues to mow the outermost ...
*Sunday, September 21, 2014 at 11:01pm*

**math**

What is the value of the expression?
*Sunday, September 21, 2014 at 10:56pm*

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