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July 28, 2014

July 28, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**MATH**

Which of the following numbers is irrational? A 5/9 B 3.15 C /5 D 8.341 I THINK IT A
*Thursday, May 29, 2014 at 8:04pm*

**Math please help**

4(x-3)=5(x+1)
*Thursday, May 29, 2014 at 7:55pm*

**business math**

If the Powershooter 1800 is marked up 58.50 what is the cost and the percent markup cost?
*Thursday, May 29, 2014 at 7:41pm*

**math**

Todd's birthday has the same date as the number of letters in the mouth ( for example May 3). If his birthday is written in this form - mouth/day/14- and the sum of the mouth and the date is greater than the year (14), what is the probability that his birthday is before ...
*Thursday, May 29, 2014 at 7:17pm*

**Math**

Jeff is putting a fence around his rectangular yard. It is 50 feet long and 30 feet wide. The fence posts must be 10 feet apart. How many posts does he need? Draw a picture
*Thursday, May 29, 2014 at 7:06pm*

**Math**

A rectangular rug has a base b and a height h, with a perimeter of 30 feet. Both b and h are both whole numbers between 5 and 10 feet. Fill in the blanks to complete this sentence: The area of the rug is at least _______ but not greater than ______.
*Thursday, May 29, 2014 at 6:53pm*

**Math**

Jake bought a car for $15,000. Each year the value goes down by 30% of its value the previous year. Write the expression that gives the value(V) after (t)years.
*Thursday, May 29, 2014 at 5:42pm*

**Math**

What's the perimeter of a regular pentagon which has the side of length 2x+7?
*Thursday, May 29, 2014 at 5:20pm*

**Algebra, math**

a plan can fly 1200 miles with the wind in 3 hours, while it takes the same plan 4 hours to fly the same distance against the wind. Find the speed of the plan in still air, and the speed of the wind.
*Thursday, May 29, 2014 at 5:20pm*

**Math**

Name the coefficients in the polynomial 4x^2+3x-3 a. 4, -3, -3 b. 4, 3 c. 4, 3, 3 d. -4, -3 I choose d Check it pleaase!
*Thursday, May 29, 2014 at 5:12pm*

**MATH PLZ HELP**

i do not know how to do this question. can someone help me with this question? 7. A jar contains 5 green erasers, 2 striped erasers, 4 pink erasers, and 3 white erasers. You select an eraser at random. What is P(not pink)?
*Thursday, May 29, 2014 at 4:53pm*

**Math**

can someone help me find 1 - 2/7 in fraction not decimal?
*Thursday, May 29, 2014 at 4:30pm*

**math**

if i ran 1/4 of a mile 2/5 and 3/7 how far did i run.please write as a fraction
*Thursday, May 29, 2014 at 4:17pm*

**Math**

How to add matrices that involve improper fractions? I have this assignment and one of the questions were: C= [ 7 11] D= [ 1 0 ] [ -15 3] [ 4 -11/12] This is what I have so far C+D= [ 8 11 ] -11 25/12 So the 25/12, do I keep it that way or do I convert it to a decimal?
*Thursday, May 29, 2014 at 3:53pm*

**math**

chapter integer note ten days minimum and maximum temperature and draw bar graph
*Thursday, May 29, 2014 at 1:20pm*

**math**

If the length of football field is 40 yards ;ass than three times the width. the total area 6400 sq, yards what are the dimensions.
*Thursday, May 29, 2014 at 12:40pm*

**math**

. 3 gal = ____ qt. 22. 5 cups = ____ tsp 23. 15 lb = ____ kg 24. 150 ml = ____ Tbsp 25. 3 qt = ____ oz = _____ tsp
*Thursday, May 29, 2014 at 12:06pm*

**math**

An object is thrown or fired straight upwards at an initial speed of v_0 ft⁄s will reach height h feet after t seconds, where h and t are related to the formula h=-16t^2+v_0 t Suppose the object is fired straight upwards with an initial speed of 800ft⁄s, What is ...
*Thursday, May 29, 2014 at 10:17am*

**math**

please help me this question. 1/a+1/b+1/c=2/1 c¡Ùb¡Ùa find a£¿b£¿c's Positive integer solution please help me thanks
*Thursday, May 29, 2014 at 10:08am*

**math**

please help me this question. 1/a+1/b+1/c=2/1 c¡Ùb¡Ùa find a£¿b£¿c's Positive integer solution please help me thanks
*Thursday, May 29, 2014 at 9:59am*

**Math **

If 5+x, 8, and 1+2x are consecutive terms in an arithmetic sequence, find x.
*Thursday, May 29, 2014 at 8:24am*

**Math**

A doctor prescribes 200 mg of medication on the first day of treatment. The dosages is halved on each successive day for one week. To the nearest milligram, what is the total amount of medication administered?
*Thursday, May 29, 2014 at 8:21am*

**Math**

Miss Emily spent 5/9 of her money on 10 stuffed bears and 5 dolls. She could buy 20 stuffed bears with the rest of her money. What was the ratio of the cost of a doll to the cost of the stuffed bear?
*Thursday, May 29, 2014 at 1:24am*

**math**

A dog starts chasing a cat when they are 12 meters apart. For every 7 meters that the dog runs, the cat runs 4 meters. How far does the dog have to run to catch up to the cat?
*Thursday, May 29, 2014 at 1:22am*

**Math 8th grade**

In(x):2,10,___,__,__,-3,__,___,x Out(y:4,28,13,-17,10,_,2.5,148,3x-2 What's the answer !!!! Help!! ASAP!
*Thursday, May 29, 2014 at 12:49am*

**Math**

Find the sum of the arithmetic series -12-9-6-...39.
*Wednesday, May 28, 2014 at 11:55pm*

**math**

The manager of a tea shop mixes two types of teas to make a specialty blend. Alone, the teas sell for $3.99 and $8.99 per ounce. How many ounces of each type of tea should be used to make 32 ounces of a mixture that sells for $5.99 per ounce?
*Wednesday, May 28, 2014 at 11:49pm*

**Math**

An isosceles triangle has an area A, an apex angle 2 theta, and a height of h. Determine an expression for theta in terms of A and h.
*Wednesday, May 28, 2014 at 10:38pm*

**Math**

A tractor-trailer worth $84 000 depreciates 20% the first year and 10% each year thereafter. How much is it worth after 5 years?
*Wednesday, May 28, 2014 at 10:19pm*

**Math**

How many terms of the series 3+6+12+24+...add to 765?
*Wednesday, May 28, 2014 at 10:05pm*

**math**

In a random sample of 75 individuals, it was found that 52 of them prefer coffee to tea. What is the margin of error for the true proportion of all individuals who prefer coffee?
*Wednesday, May 28, 2014 at 9:49pm*

**math**

Solve the following system of equations. 4x+9y=10 x= 5x+18y=19 y=
*Wednesday, May 28, 2014 at 9:35pm*

**Math Algebra**

Please help. I do not know how to do this. Solve: 2/3x + 4/x = 7/x+1
*Wednesday, May 28, 2014 at 9:32pm*

**Math**

A jar contains 5 red marbles and 3 green marbles. A marble is drawn at random and not replaced. A second marble is then drawn from the jar. Find the probability that both marbles are the same color. I figured out that the probability that both marbles are red is 20/56 and the ...
*Wednesday, May 28, 2014 at 9:12pm*

**Math**

Here are 5 questions I cannot figure out 1. Is every parallelogram a square? 2.Is every rhombus a square? 3. Is every square a rhombus? 4. Is every rectangle a parallelogram? 5. Is every rectangle a rhombus? Thank you so much for answering
*Wednesday, May 28, 2014 at 8:57pm*

**Math**

Draw a concave quadrilateral that is not an arrowhead
*Wednesday, May 28, 2014 at 8:52pm*

**Math**

What is the perimeter of a regular pentagon which has sides of length 2x+7?
*Wednesday, May 28, 2014 at 8:04pm*

**Math **

Is there a case when you might prefer algebraically over graphically solving a system? Why or why not? Think about the type of possible solutions and how the method might affect your choice. My answer: A case when I would prefer a algebraically would be trying to figure out ...
*Wednesday, May 28, 2014 at 7:53pm*

**MATH**

Ido not know how to do this. A jar contains 5 green erasers, 2 striped erasers, 4 pink erasers, and 3 white erasers. You select an eraser at random. What is P(not pink)? (1 point)
*Wednesday, May 28, 2014 at 7:41pm*

**math**

Sam uses an equation to calculate the total number of apples contained in any number of shipping crates. which of the following is an equation? A.n=a∗c<<<<<<<;< is it A B.n≥a∗c C.n≤a∗c D.n÷a∗c
*Wednesday, May 28, 2014 at 7:35pm*

**Math**

James takes a ruler and measures the width of the piece of paper. He find that the actual width is 48.8 cm. Find the width of each strip.
*Wednesday, May 28, 2014 at 7:26pm*

**Math**

James has a square piece of paper. He wants to cut it into strips of equal width. He says, This piece of paper is about 48 cm wide. How can he find the width of each strip without measuring? Is this width accurate?
*Wednesday, May 28, 2014 at 7:23pm*

**math**

Sam uses an equation to calculate the total number of apples contained in any number of shipping crates. which of the following is an equation? A.n=a∗c B.n≥a∗c C.n≤a∗c D.n÷a∗c
*Wednesday, May 28, 2014 at 7:21pm*

**Math**

Marcy paid $35 for 10 kg of raisins. She divided raisins equally into two containers. Then she sold raisins in the first container at $4.50 per kg and those in second container at $5.50 per kg. How much money did Marcy earn after selling all the raisins?
*Wednesday, May 28, 2014 at 7:21pm*

**Math Help**

Plastic tub has capacity of 13.5 quarts. It can hold 3 times as much liquid as a pail. Pail can hold twice as much liquid as can. Find capacity of pail and that of the can in quarts.
*Wednesday, May 28, 2014 at 7:18pm*

**3rdgrade math**

How do I explain how to use multiplication to convert yards to feet? I am not very good at this subject.
*Wednesday, May 28, 2014 at 7:10pm*

**Math Help**

A shop owner bought 30 folders and some journal. He paid @82.50 for the folders. Each journal cost 10 times as much as a folder. What was the cost of each journal?
*Wednesday, May 28, 2014 at 7:03pm*

**Math**

Cos180* - Sin90* + Cot45* - Csc30* - Sec240* - Tan315* How do I do this?
*Wednesday, May 28, 2014 at 6:54pm*

**Math**

A student rented a bicycle for a one-time fee of $12.00 and then a charge of $o.85 per day.She paid $28.15 for the use of the bicycle. How many dats did she keep it?
*Wednesday, May 28, 2014 at 6:40pm*

**Math**

5{3a-2b(3a+6b)+6a}
*Wednesday, May 28, 2014 at 6:37pm*

**math **

There are two roads that connect Emily's house and John's house. Emily told john that she drove 3/4 of the total distance from her house to john's house on one day, but she did not tell him which road she took. A. using the long road, the distance between Emily'...
*Wednesday, May 28, 2014 at 6:29pm*

**math**

Charlie must choose a number between and that is a multiple of , , and . Write all the numbers that he could choose. If there is more than one number, separate them with commas
*Wednesday, May 28, 2014 at 5:33pm*

**Math**

These are vectors as well: (a) AB + __ = CA = 0 (b) AB +BC + CD + DA = __ the first was a mistake i wanted these ones. Complete these and please if you can, explain.
*Wednesday, May 28, 2014 at 4:52pm*

**math **

Rona bought a length of rope. She cut off 1 meter of rope. Now she has 3 meters of rope. How much rope did Rona buy?
*Wednesday, May 28, 2014 at 4:50pm*

**Math**

These are vectors: QA + __ =QB Complete the vector equation...
*Wednesday, May 28, 2014 at 4:38pm*

**math**

Len buys 24 centimeters of blue trim and some gold trim. She buys a total of 54 centimeters of trim. How much gold trim does Len buy?
*Wednesday, May 28, 2014 at 4:29pm*

**math**

After flying at an altitude of 9 kilometers, an airplane starts to descend when its ground distance from the landing field is 175 kilometers. To the nearest degree what is the angle of depression for this portion of the flight?
*Wednesday, May 28, 2014 at 4:15pm*

**Math**

A jar contains 120 beads. b. How many red beans are there? The angle degree is 66, how would I find this out? I don't know how to.
*Wednesday, May 28, 2014 at 4:10pm*

**math**

Ray has a board that is 16 feet long. He cuts off 11 feet to make a shelf. What is the length of the board that is left?
*Wednesday, May 28, 2014 at 4:02pm*

**math**

a basic cellular phone plan costs $18 per month for 50 calling minutes. Additional time costs $0.30 per minute. The formula C = 18+0.30 (x-50) gives the monthly cost for this plan for calling minutes, where x > 50. How many calling minutes are possible for a monthly cost of...
*Wednesday, May 28, 2014 at 3:56pm*

**math **

Catherine needs to evaluate the expression below 7+4(-6) What is the value of this expression A. -17<<<<<<< is it A B. -5 C. 15 D. 17
*Wednesday, May 28, 2014 at 3:42pm*

**math **

how do you put these from greatest to least? 3/40 , 4/25 , 1/10 A. 3/40 , 4/25 , 1/10 B. 3/40 , 1/10 , 4/25 C. 4/25 , 1/10 , 3/40 D. 4/25 , 3/40 , 1/10
*Wednesday, May 28, 2014 at 3:30pm*

**math**

Tiffany purchased a $10,000, 13-week Treasury bill that's paying 2.25%. What is the effective rate on this T-bill? A. 2.7% B. 2.26% C. 2.0% I think its b
*Wednesday, May 28, 2014 at 3:29pm*

**math**

malik folded his square piece of art paper exactly 4 times so that the creases formed 16 squares as shown. Which fraction describes how malik folded the paper? A. 1/2 B. 1/3 C. 1/4 D. 1/16<<<<<<<<< is it D.
*Wednesday, May 28, 2014 at 3:20pm*

**math**

Determine the concavity in the graph of f (x) = -4x^3 + 8x^2 + ax + b, where a and b are real numbers. Answer downward on (-∞, ∞) downward on (-∞, 2/3); upward on (2/3, ∞) upward on (-∞, -2/3); downward on (-2/3, ∞) upward on (-∞, 2/3...
*Wednesday, May 28, 2014 at 2:38pm*

**math**

In a zoo, 21% of the animals are reptiles and 11% are birds. There are a total of 1,500 animals in the zoo. Which proportion can be solved for r, the number of reptiles in the zoo?
*Wednesday, May 28, 2014 at 2:26pm*

**math**

Suppose f(x) = x^3 on the interval [1, 4]. Use the Mean Value Theorem to find all values c in the open interval (1, 4) such that f'(c)= (f(4)-f(1))/4-1 c= square root of 7 c= cubed root of 21 c = 7 Mean Value Theorem does not apply
*Wednesday, May 28, 2014 at 2:24pm*

**math**

The simple formula for the nth term of an arithmetic sequence is an = 6n + 14. What is the explicit formula corresponding to the simple formula?
*Wednesday, May 28, 2014 at 2:10pm*

**Math**

At your summer with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following Methods is most likely to be random? a)You survey customers at the local shopping mall b)You survey people chosen ...
*Wednesday, May 28, 2014 at 11:50am*

**math**

Nathan bought 8 wooden posts to build a fence. The length of each post is 6 feet 4 inches. What is the total length in inches of the 8 posts? A. 608 B. 576 C. 166 D. 76
*Wednesday, May 28, 2014 at 11:08am*

**Math (Pre-calc)**

I need to know how to solve this for my review questions. Thanks! The wheel on a racing bike have a radius of 14 in. How fast is the cyclist traveling in mph if the wheels are turning at 280 revolutions per minute. find the exact value of the expression. Sin(2pi/3)+ tan(3pi/4)
*Wednesday, May 28, 2014 at 9:29am*

**Math**

(1/25)-3/2 please solve this q
*Wednesday, May 28, 2014 at 5:38am*

**math**

A 1.6 km road rises 400 m. What is the angle of elevation of the road to the nearest degree?
*Wednesday, May 28, 2014 at 1:15am*

**math**

Tyson handled 150 service calls on his shift yesterday. Of those, 20% resulted in a successful upsell of additional services. If Tyson makes a $6 commission on top of his regular salary for each successful upsell that he makes, how much commission did he make yesterday?
*Wednesday, May 28, 2014 at 12:44am*

**math**

Denise took a total of 80 calls on her shift at work today. Of those 80 calls, 55% were resolved, 15% escalated to a supervisor, and 10% required that a technician be sent out to the customer's house. What is the total number of calls that Denise resolved on her shift today?
*Wednesday, May 28, 2014 at 12:38am*

**math help plzzz!!!!!!!!!**

-8<1-3(x-2)<13
*Wednesday, May 28, 2014 at 12:02am*

**math help plzzz**

Solve the inequality then graph the solution set on real number line. (2/5x)>7 2(x+7)-4>5(x-3)
*Tuesday, May 27, 2014 at 11:56pm*

**math**

length of blanket is 80 inches and width is 60 inches,how long the border has to be to go around the edge of the blanket?
*Tuesday, May 27, 2014 at 11:25pm*

**7th grade math**

Solve the inequality then graph the solution set on real number line. (2/5x)>7 2(x+7)-4>5(x-3)
*Tuesday, May 27, 2014 at 11:23pm*

**math problem**

In DABC, what could the 7 shown in the ratio sin A = 7/9 represent? A) the length of the adjacent side of angle B B) the length of the opposite side of angle A C) the length of the hypotenuse of a right triangle D) the length of the adjacent side of angle A I did this as an ...
*Tuesday, May 27, 2014 at 11:23pm*

**HeLP MATH !!!!**

The annual sales S (in billion of dollars) of oracle corporation from 2004 through 2009 can approximated by linear equation S=2.903t-1.98, 4 < t < 9, where t represent the year,with t=4 corresponding to 2004.use the model estimate the year in which oracles annual sales ...
*Tuesday, May 27, 2014 at 11:07pm*

**math**

A ladder is leaning against the side of a house and forms an angle of 66o with the ground. The foot of the ladder is 11.3 feet from the base of the house. Find the length of the ladder to the nearest foot.
*Tuesday, May 27, 2014 at 11:03pm*

**Math**

How to expand, then evaluate, and simplify this log question: logbase7 (49( 3sqrt x^5)) I put the brackets in myself, I there were originally no brackets nor spaces in the question
*Tuesday, May 27, 2014 at 10:41pm*

**math**

there are 4 boys at the park. some boys join them. now their 16 kids at park. how many boys joined them?
*Tuesday, May 27, 2014 at 10:11pm*

**math**

a man standing on ground level is 1000 feet away from the base of a 350 feet tall building. Find,to the nearest degree,the measure of the angle of elevation to the top of the building from the point on the ground where the man is standing? How do you solve for this measurement...
*Tuesday, May 27, 2014 at 10:10pm*

**6th grade math**

Determine whether each value of x is a solution of the inequality 4x-5<3 a. x=0 b. x=2 c. x=-2 d. x=4 Help please *show the work and answer!!
*Tuesday, May 27, 2014 at 9:35pm*

**math**

How to make a 10 grams ....anything. ...please help me Please tell me how to make
*Tuesday, May 27, 2014 at 9:31pm*

**math**

write an equation of the line containing the given point and parallel to the given line (2,-5);3x-4y=9
*Tuesday, May 27, 2014 at 9:10pm*

**math**

mike is playing cars with his sister when he draws a card from a pack of 35 cars number from 1 to 35. what is the probability of drawing number that is divisible by 5?
*Tuesday, May 27, 2014 at 8:56pm*

**Math**

How to expand, then evaluate, and simplify this log question: logbase7 (49( 3sqrt x^5)) I put the brackets in myself, I there were originally no brackets nor spaces in the question
*Tuesday, May 27, 2014 at 6:42pm*

**math**

what other shapes can form with 24 metres
*Tuesday, May 27, 2014 at 6:27pm*

**math**

How many rectangles can you make with 24 metres
*Tuesday, May 27, 2014 at 6:26pm*

** Math? Check Answers Please!!**

1. x^16/x^3 x^16/3 x^48 x^19 x^13** 2. 4^4 • 4^6 4^2 4^6** 4^10 4^24 3. 4^4 • 4^44 4^176 4^48 4^40** 4^28 4. 3^4/3^4 Write the value of the expression. 3 0 1 4** 5. 3^3/3^6 1/27** 1/9 9 -27
*Tuesday, May 27, 2014 at 5:43pm*

**Math Homework: Check Answers**

1. Suppose you earned 8t - 3 dollars on Monday and 6t + 5 dollars on Tuesday. What were you total earnings? Simplify your answer. A) 2t + 2 B) 2t - 8 C) 14t + 2 D) 14t - 8 Answer: A 2. f^2 • f^4 A) (2f)^8 B) (2f)^6 C) f^8 D) f^6 Answer: D 3. 100^12/100^8 A) 100^12/8 B) ...
*Tuesday, May 27, 2014 at 5:20pm*

**math**

Find the total surface area of the right cylinder. H= 12 and r = 7
*Tuesday, May 27, 2014 at 4:48pm*

**Math**

The surface area of the sphere is 20.25pie square centimeters. What is the diameter of the sphere?
*Tuesday, May 27, 2014 at 4:42pm*

**MATH PLZ**

you accept a new job with a starting salary of $34,800. You are told you will receive an annual raise of least $1,500. What is the maximum number of years you must work before your annual salary will be 45,000? (** SHOW WORK SO I CAN KNOW HOW YOU GOT THE ANSWER....)
*Tuesday, May 27, 2014 at 3:32pm*

**math**

A commonly accepted angle of elevation for safe, accessible wheelchair ramps is 4:5 degrees. The public library's main door is 1:2 m above street level. What will be the run of this ramp?
*Tuesday, May 27, 2014 at 3:07pm*

**math**

The slope of a ramp leading into a grocery store is 1:6. What is the angle of elevation of the ramp?
*Tuesday, May 27, 2014 at 3:04pm*

**math**

A ladder on the west coast trail on Vancouver island BC, has a slope of 16 over a run of 3 m. What is the Verticle distance covered by the ladder?
*Tuesday, May 27, 2014 at 3:01pm*

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