Friday

December 19, 2014

December 19, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

A cube has a volume of 50 653 cubic metres. What is the surface area of the cube?
*Friday, November 28, 2014 at 6:03pm*

**math **

write the following square root in the form a root b . where a and b are integers and b has the least value possiable. 3 root 7?
*Friday, November 28, 2014 at 5:46pm*

**MATH**

A company will need 65,000 in 6 years to add an addition. to meet this goal the company deposits money in an account today that pays 5% annual intrest compoundded quarterly. Find the amount that should be invested to total 65,000 in 6 years. the company should invest? plz help...
*Friday, November 28, 2014 at 4:39pm*

**MATH**

write the following square root in the aVb , where a and b are integers and b has the least value possible. V63?
*Friday, November 28, 2014 at 2:50pm*

**math**

a company will need $30.000 in 7 years for a new addition. To meat this goal the company deposits money in an account today that pays 7% annual interest compounded quarterly. find the amount that should be invested to total $30.000 in 7 years?
*Friday, November 28, 2014 at 2:29pm*

**Math**

How would I expand this two quadratic equations and find a & x for both of them? Here are my equations: y=a(x+1.5)^2+0 y=a(x+2)^2+1.5
*Friday, November 28, 2014 at 1:10pm*

**Plz help with 8th grade math**

Jack’s brother Joey is learning about shadows in school. Joey measures Jack’s shadow and finds that it is 4 feet long. Joey looks over at a 56-foothigh building next to the 2 of them and wonders how long the shadow of the building is. Assuming Jack is 5 feet tall, ...
*Friday, November 28, 2014 at 12:56pm*

**Math**

A 25 foot ladder is leaning against a house at a 63 degree angle. How far up does it reach off the ground?
*Friday, November 28, 2014 at 11:34am*

**math**

The 3rd term of a geometric progression is nine times the 1st term.if the 2nd term is one twenty fourth the 5th term.find the 4th term.(there is a mistake in the 2nd to the last statement.help locate the mistake{final answer 4th term =48).i solved to this extent.ar^2=9 r=3.
*Friday, November 28, 2014 at 11:19am*

**math**

the 3rd term of a geometric progression is nine times the 1st term.if the 2nd term is one-twenty fourth the 5th term.find the 4th term.(my solution so far).ar^2=9a r=sqr of 9 r=3.help me find the 1st term
*Friday, November 28, 2014 at 10:57am*

**math**

Use mathematical induction to show that 3n + 7n − 2 is divisible by 8 for all n 1. [Hint: 7n + 1 is divisible by 2.]
*Friday, November 28, 2014 at 10:32am*

**Math**

The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two light sources, one four times as strong as the other, are placed 11 ft apart, how far away ...
*Friday, November 28, 2014 at 4:05am*

**math**

A test had 200 questions .Each correct answer carried 2 marks.Each wrong answer carried -1/2 marks and unanswered question fetched no marks .Ajay attempted all the question in the test and he scored 360 marks.What would his marks be, if for each correct answer he got 1/2 marks...
*Friday, November 28, 2014 at 3:19am*

**MATH 100**

The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two light sources, one 10 times as strong as the other, are placed 9 ft apart, how many feet from...
*Thursday, November 27, 2014 at 10:12pm*

**Math**

The two equal sides of an isosceles triangle are each 24 centimeters. If each of the two equal angles measures 60, find the length of the base and the altitude. (leave your answer in radical form).
*Thursday, November 27, 2014 at 7:30pm*

**math**

i am a 3digit number that is less than 500. My ones digit is twice the hundreds digit. The sum of the three digits is 14. What number am I?
*Thursday, November 27, 2014 at 6:14pm*

**Math**

write the partial fraction decomposition step by step (-5x^2-8x-3)/(x^3+x^2+x)
*Thursday, November 27, 2014 at 5:31pm*

**math**

The 3rd term of a geometric progression is nine times the first term.if the second term is one-twenty fourth the 5th term.find the 4th term. solution ar^2=9a r=sqr of 9 r=3.pls help me on how to get the first term(a)
*Thursday, November 27, 2014 at 2:17pm*

**Math**

The sides of the equilateral are given in cm. 3x 2,2y-x,y 3. Find x and y and the perimeter of the triangle
*Thursday, November 27, 2014 at 2:17pm*

**math**

Water lillies double in area every 24 hour. In spring there is one water lily on a lake. In sixty days, the lake is completely covered with lillies. how many days did it take to cover half the lake
*Thursday, November 27, 2014 at 12:39pm*

**8th grade math question..**

Lashonda found a recipe that makes 2 1/2 dozen cupcakes and requires 1/4 cup of vegetable oil. If she makes 90 cupcakes for a family reunion picnic, how much vegetable oil will she need?
*Thursday, November 27, 2014 at 12:34pm*

**math**

The third term of a geometric progressiom is nine times the first term.if the second term is one-twenty fourth the fifth term.find the fourth term.ar^2=9a. r=sqr of 9 r=3.pls teach me how to get the first term and i can get the 4th term myself
*Thursday, November 27, 2014 at 11:37am*

**Math**

if the lenght and breath of a rectangle are in the ratio 3:2,then what is the breath if the lenght is 1.5m
*Thursday, November 27, 2014 at 11:33am*

**math**

Five three digit numbers including N were to be added. While adding, the reverse of N was added by mistake instead of N. Hence the summ increased by 11 times the summ of the digits of N.Eight times the difference of N's units and hundreds digit is 6 more than twice its ...
*Thursday, November 27, 2014 at 11:08am*

**Math**

In triangle ABC, the measure of C is twice the measure of A, and the measure of B is 6 times the measure of A. Find the measure of each angle
*Thursday, November 27, 2014 at 8:44am*

**math**

A mass on the end of a spring which is hanging vertically is raised up and let go. It then oscillates between 2m and 1.5m above the floor and completes 32 cycles in one minute. The height, h metres, of the mass above the floor after t seconds can be modelled by the function h...
*Thursday, November 27, 2014 at 8:39am*

**math**

If both numerator and denominator of a fraction are increased by one, the fraction formed is 2/3. if both numerator and denominator are decreased by two, the fraction formed is 3/5. what is the fraction formed, if both numerator and denominator are increased by four? Please ...
*Thursday, November 27, 2014 at 7:56am*

**math**

find twonumbers such that the sum of twice the first and thric the second is 92 and four times the exceeds seven times the second by 2
*Thursday, November 27, 2014 at 4:49am*

**math**

a lady has only 20 paisa coins and 25 paisa coins in her purse if she has 50 coins in totalling rupees 11.50 how many coins of each kind does she have
*Thursday, November 27, 2014 at 3:54am*

**math**

What is 1/2%, I say 1/2% = 0.5%, but my mom says its 50%, am I correct.
*Wednesday, November 26, 2014 at 9:04pm*

**Math**

A Sony 55" television set is selling for $1,499.99 with a savings of $1,500.00. Calculate the percent markdown after rebate for the product
*Wednesday, November 26, 2014 at 7:44pm*

**Math**

Carousel Toys has rompers, wooden rocking horses for toddlers, on a 30% markdown sale for $72.09. What was the original price before markdown? Round to nearest cent
*Wednesday, November 26, 2014 at 6:56pm*

**math**

9 of the 30 children in a class had brown eyes what fraction of the children have brown eyes
*Wednesday, November 26, 2014 at 5:58pm*

**Bus. Math**

The Soft Step Floor Co. Purchases carpeting for $5.12 per square yard and marks it up 55% based on the selling price. What is the selling price per square yard? Round to the nearest cent
*Wednesday, November 26, 2014 at 5:53pm*

**math**

Show how to make one addend the next ten number. complete the new addition sentence. 6) 18+3=___ ___+___=___ 7) 27+24=___ ___+___=___
*Wednesday, November 26, 2014 at 5:27pm*

**Math**

What is the first step in solving the equation 3/4 divided by 2/3
*Wednesday, November 26, 2014 at 5:09pm*

**Math**

Laura has $80 saved for a new laptop. This is 20% of the total amount she needs for the laptop. How much does the new laptop cost?
*Wednesday, November 26, 2014 at 4:24pm*

**Math**

Peter has money in two savings accounts. One rate is 9% and the other is 11%. If he has $400 more in the 11% account and the total interest is $117, how much is invested in each savings account?
*Wednesday, November 26, 2014 at 3:48pm*

**math**

Scenario 1) You and your friend enjoy riding your bicycles. Today is a beautiful sunny day, so the two of you are taking a long ride out in the country side. Leaving your home in Sunshine, you ride 6 miles due west to the town of Happyville, where you turn south and ride 8 ...
*Wednesday, November 26, 2014 at 2:47pm*

**Math--1 question**

Find the mean, median, mode, and range of the data: 32, 34, 30, 35, 33, 31, 54. If necessary, round to the nearest tenth. Show your work.
*Wednesday, November 26, 2014 at 2:32pm*

**Math**

A ball is thrown straight up from a bridge over a river and falls into the water. The height, h, in meters, of the ball above the water t seconds after being thrown is approximately modeled by the relation h=-5t^2+10t+35. Can you please help me ! Show your work. a) What is the...
*Wednesday, November 26, 2014 at 12:42pm*

**math!!**

5^6 * 5^3
*Wednesday, November 26, 2014 at 11:54am*

**math**

conver the numeral to a numeral in base 10 1101 basetwo can some one plz help .
*Wednesday, November 26, 2014 at 11:44am*

**math**

8,18,28,38,48 what is the next term? i came up with 10 am i correct? is this consider arithmetic or geometric?
*Wednesday, November 26, 2014 at 11:41am*

**math**

the yearbook club is having a bake sale to raise money for the senior class. LArge cupcakes are sold for 1.25 and small cupcakes are .75. If 105 cupcakes were sold for a total amount of 109.75, how many large cupcakes did the yearbook club sell?
*Wednesday, November 26, 2014 at 11:31am*

**Stats Math 3**

Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1) Describe the sampling distribution of p^ (choose the ...
*Wednesday, November 26, 2014 at 7:11am*

**Stats Math 2**

Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on a ballot in a large town (voting population over 100,000). An exit poll of 300 voters finds that 144 ...
*Wednesday, November 26, 2014 at 7:07am*

**STATS Math**

Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1) describe the sampling ditriribution of p^ (choose the ...
*Wednesday, November 26, 2014 at 7:03am*

**Math**

Three equivalent ratios for 5/6
*Wednesday, November 26, 2014 at 6:57am*

**math**

of 10 girls in a class, 3 speak French.If two girls are chosen at random, what is the probability that both speak french
*Wednesday, November 26, 2014 at 3:55am*

**Math**

A bag contains 10 white balls and 6 yellow balls. We need to add 112 balls to the bag and keep the ratio the same. How many of each do we need to add. - What's the correct formula to use?
*Tuesday, November 25, 2014 at 10:13pm*

**Math Help!**

Out of 75 students, 15 are on the student council. What percent are on the student council? A.20% B.80% C.40% D.60% Is the answer D?
*Tuesday, November 25, 2014 at 9:58pm*

**Math Help!**

On a 40-question test, Peggy answers 34 questions correctly. What percent of the questions does she answer correctly? A. 85% B. 0.75 C. 1.17% D. 8.5% Is the answer A?
*Tuesday, November 25, 2014 at 9:53pm*

**Math Help!**

Write a percent equation that can be used to solve the following problem: 25 is what percent of 350? A. n= 25 x 350 B. 350 =p x 25 C. 0.25= p x 350 D. none of these Is the answer D?
*Tuesday, November 25, 2014 at 9:48pm*

**Math Help!**

Write a percent equation that can be used to solve the following problem:820 is 20% of what number? A. n=0.2x 820 B. 820=0.2x n C. 0.2= nx 820 D. none of these Is the answer A?
*Tuesday, November 25, 2014 at 9:45pm*

**Math Help!**

Identify the part,whole,and percent in the following statement: Find 15% of 750 A. part=750,whole=n,percent=15 B. part=15, whole=750,percent=p C. Part=n,whole=750,percent=15 D.none of these Is the answer C?
*Tuesday, November 25, 2014 at 9:39pm*

**Math**

A trees shadow is 32 feet long how tall is the tree?
*Tuesday, November 25, 2014 at 8:29pm*

**Math**

Currently you have $80 and your sister has $145. You decide to save $6 of your allowen e each week, while your sister spends her whole allowance plus $7 a week. How long will it be before you have as much money as your sister?
*Tuesday, November 25, 2014 at 8:08pm*

**Math**

What fraction equals 1/2
*Tuesday, November 25, 2014 at 7:32pm*

**math**

create a situation to describe the rule y=8x+20
*Tuesday, November 25, 2014 at 7:11pm*

**6th grade Math**

Rafael asked 85 students what kind of pet they liked the most. Exactly 35% of the students said they liked dogs best. What was the total number of students who said they liked dogs best? Please show work!!
*Tuesday, November 25, 2014 at 7:07pm*

**Math **

Louis paid $42 for a dozen magazines with her annual and subscription to her favorite sport magazine. What is the unit cost for each magazine?(How many magazines did she subscribe to) Please show work.
*Tuesday, November 25, 2014 at 6:15pm*

**math show work please**

1/(X+3)+4/(x+5)= 2/(x^2+8x+15) a. the solution set is b. the solution set is all real numbers c. the solution set is empty
*Tuesday, November 25, 2014 at 5:58pm*

**Math**

7b - 2 = 1b + 10
*Tuesday, November 25, 2014 at 5:57pm*

**math show work please**

1-11/x+30/x^2=0 A.the solution set is ? B.The solution set is the set of real numbers or C. the solution set is an empty set
*Tuesday, November 25, 2014 at 5:56pm*

**math**

sqrt(x) * 7sqrt(x)
*Tuesday, November 25, 2014 at 5:39pm*

**math**

a hollow shaft has a cross sectional area of 8.68 cm square if its inside diameter is 0.75 cm, calculate its outside diameter.
*Tuesday, November 25, 2014 at 4:36pm*

**math**

how i make triangular prism,the dimensions are 6 unit base and 6 unit height,but the entire prism has height of 15 unit
*Tuesday, November 25, 2014 at 4:21pm*

**Math **

Solve using the annihilator method Y"-8y'+20y=5xe^(4x) sin (2x)
*Tuesday, November 25, 2014 at 3:54pm*

**math**

multiply -2(p-q)
*Tuesday, November 25, 2014 at 3:25pm*

**math**

find the prime factorization of 35^3 *55*9^11
*Tuesday, November 25, 2014 at 3:13pm*

**MATH**

Rick has a box of coins .The box currently contains 51 coins, consisting of pennies, dimes and quarters. The numbers of pennies is equal to the numbers of dimes and the total value is $5.73. How many of each denominations of coins does he have? the number of pennies which is ...
*Tuesday, November 25, 2014 at 3:12pm*

**Math**

A square cage is built with 20 ft of wire fencing. How long is each side?
*Tuesday, November 25, 2014 at 3:10pm*

**1 Math question**

Estimate $6.56 + $13.02 using front-end estimation. about $19.60 about $18.60 about $20.10 *** about $17.10
*Tuesday, November 25, 2014 at 2:37pm*

**Math! Need The Help!**

Which is the best buy? A. $12.40 for 6 boxes of tissues B. $10.58 for 5 boxes of tissues C. $14.11 for 9 boxes of tissues D. $15.47 for 8 boxes of tissues
*Tuesday, November 25, 2014 at 2:37pm*

**Math Help! ASAP!**

2. Write a ratio for the situation in three ways comparing the first quantity to the second quantity. In union City, about one in every three homes has two cars A. 5 to 2, 5:2, 5/2 B. 1 to 3, 1:3, 1/3 C. 5 to 3, 5:3, 5/3 D. 3 to 2, 3:2, 3/2 I picked D. I dont know if its ...
*Tuesday, November 25, 2014 at 2:19pm*

**I need help in 6th math**

Elizabeth has 1 7/10 as many plants as Rosalie has in her garden. If Elizabeth has 51 plants, how many plants does Rosalie have in her garden? Would it be 56?
*Tuesday, November 25, 2014 at 2:18pm*

**Math**

Log2base10=0.301 and log3base10= 0.477. Evaluate log45base10
*Tuesday, November 25, 2014 at 2:02pm*

**Math**

Early pay: Pay $60 before memorial day: swim any number of days Write an equation in slope-intercept form so that x is the number of days and y is the cost.
*Tuesday, November 25, 2014 at 1:34pm*

**math **

multiply and simplify 5^6 * 5^3
*Tuesday, November 25, 2014 at 1:30pm*

**math!!**

a high school has a student reduction and lost 1/10 of its students. If 198 of its students were left after the reduction. How many students were there to start with.
*Tuesday, November 25, 2014 at 1:25pm*

**math **

find a value for x so that 28/12 = -7/x x=?
*Tuesday, November 25, 2014 at 1:22pm*

**Math... Stuck... A little help?**

x cube plus kx plus 9=0 I took it as: x^3+kx+9=0 I answered: If so......... x^3+kx+9=0 Subtract 9 from both sides (Somenoe correct me if I'm wrong, please) which looks like: x^3+kx+9-9=0-9 Now the best part.... finding variables x^3+kx=9 x^3+(k•x)=9 Hmmm... x^3= (x&#...
*Tuesday, November 25, 2014 at 1:15pm*

**math**

the number of professors in a collage is P and the number of students is S and there are 15 times as many students as professors. write the answer as an algerbra equation.
*Tuesday, November 25, 2014 at 1:08pm*

**Math. (Check Answers) STUCK**

HI, I'm stuck on two questions(: Round the number to the thousandths place. 97093.113469 Is it 97093.113 < -- ? 97093.112 97093.114 97000 Without multiplying, determine the sign of the product. (19)(-2)(37)(-0.8)(112) Postive Negative <-- ? The product is zero
*Tuesday, November 25, 2014 at 12:30pm*

**math**

x cube plus kx plus 9=0 give me answer
*Tuesday, November 25, 2014 at 12:23pm*

**Math**

1. What value for x makes the sentence true? 7x = 1 0 6 3 2
*Tuesday, November 25, 2014 at 11:42am*

**easy math **

-5.4 ÷ 0.9 = -6.0 < --- ? this one or -0.6 0.6 6.0
*Tuesday, November 25, 2014 at 11:26am*

**math**

a 154 lb person burns 420calories per hour riding an exercise bicycle at a rate of 15 mi/hr write a function rule to represent the total calories burned over time by that person.
*Tuesday, November 25, 2014 at 10:10am*

**math**

John bought a total of 30 white and brown pens for a total of $32. The cost of each white pen is 70 cents more than the cost of each Brown pen. Which would be the possible value of the cost of each Brown pen( in cents)? Please help me in forming a equation.
*Tuesday, November 25, 2014 at 6:26am*

**math**

Simplify completely quantity 6 x squared minus 54 plus 84 over quantity 8 x squared minus 40 x plus 48 divided by quantity x squared plus x minus 56 over quantity 2 x squared plus 12 x minus 32
*Tuesday, November 25, 2014 at 6:19am*

**math**

The cost of printing the first fifteen hundred copies of a book is $1500. It costs y dollars to print each subsequent copy. The cost of printing the first 7500 copies of the book is $7080. Find Y. Please explain how to solve it.
*Tuesday, November 25, 2014 at 5:38am*

**business math **

Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April 15. She sent the payment November 8. The IRS sent her a penalty charge of 8.80% simple interest on the unpaid taxes of $3,600. Calculate the penalty. (Remember that the government ...
*Tuesday, November 25, 2014 at 1:03am*

**integrated math**

A 150 yard pipe is cut to provide drainage for two fiekds. If the length of one piece us 3 yards less than twice the length of the second piece, what are the lengths of the two pieces?
*Tuesday, November 25, 2014 at 12:26am*

**math **

Determine the value of k for which the direction vectors of the lines x-1/k = y-2/2 = z+1/k-1 and x+3/-2 = z/1, y=-1 are perpendicular.
*Monday, November 24, 2014 at 10:33pm*

**Math with business apps**

How much should be invested at 6% compounded monthly so that the investment will be worth $20,000 in six years?
*Monday, November 24, 2014 at 9:43pm*

**Math with business apps**

You invest $5000 at 3% compounded monthly for 15 years. How much interest will you earn?
*Monday, November 24, 2014 at 9:42pm*

**Math with business apps**

Tom invested $7,000 at 6.5% interest compounded monthly. How much will be in this account after 18 months?
*Monday, November 24, 2014 at 9:40pm*

**Math 3371**

In a certain year, 26% of all teenagers in the United States had checking accounts. Your bank, TeenChex Inc., is interested in targeting teenagers who do not already have a checking account. (a) If TeenChex selects a random sample of 3,000 teenagers, what number of teenagers ...
*Monday, November 24, 2014 at 9:36pm*

**MATH!!**

Joe and Susan invested $1500 at Bank of America in 2000, at 4% compounded quarterly. In the year 2005 they moved to another city and took the total money from their investment added $500 and invested in at Bank Bravo, at 5% compounded quarterly. a) What is the value of this ...
*Monday, November 24, 2014 at 9:07pm*

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