Sunday
August 2, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math
A baseball has a diameter of 6 cm. How much air is needed to fill the baseball, in cubic centimeters? Round your answer to the nearest centimeter. (Use 3.14 for π.)
Tuesday, May 19, 2015 by Shawn

Math
A spherical water balloon has a diameter of 10 cm. How much water is needed to fill the balloon, in cubic centimeters? Round your answer to the nearest centimeter. (Use 3.14 for π.)
Tuesday, May 19, 2015 by John

Math
An investor invests $3,026 into a savings account. The interest on the account is 3- 1/2%, and the investor invests the money for one and one-half years. What will her simple interest be? –
Tuesday, May 19, 2015 by HIlda

Math Please help!!!
A 154-lb person burns 420 calories per hour riding an exercise bicycle at a rate of 15 mi/h. Write a function rule to represent the total calories burned over time by that person. Can someone please help me???
Tuesday, May 19, 2015 by Sammy

Math/Algebra
Help please. Find the Volume of the cylinder. use 3.14 for pi. Diameter of 34 M height of 27 M
Tuesday, May 19, 2015 by Anonymous

liberal arts math
I have to figure the finance charge per $ 100.00 for a loan of $4500.00 with a finance charge of $1080.00 I don't know what formula to use
Tuesday, May 19, 2015 by Jocelyn

math
-6=a+a+4
Tuesday, May 19, 2015 by marybeth

math
Can you find two positive numbers whose sum and product are both 5? Round off to nearest hundredth, please.
Tuesday, May 19, 2015 by nena

math please help
There are two triangles one large and one small. Write an expression in simplest form for the perimeter of each triangle. Large triangle left side says 4x+2 top says 7x+7 bottom days 5x-4. Small triangle left side says x+3 top says 2x-5 and bottom says X+7. How do I write an ...
Tuesday, May 19, 2015 by stressed out over math

link for all grades free calculator
Of you need help with math you can check out this link and put your question in and it helps a lot and it's free. put in 3w's.mathpapa and then dotcom
Tuesday, May 19, 2015 by Do you need help with math?

math
which is the greater volume: 3 cubic ft or 3 cubic yd?
Tuesday, May 19, 2015 by romeo

math please help
Evaluate the following expressions show all your work. A.11^0 B.11^2/11^2 C. Are the answers to both parts the same? Why or why not? Please help me I'm really stupid in math and I can't figure these out?
Tuesday, May 19, 2015 by hopeless

math help please!!
What do I do with this?? 3^3/3^6 A.1/27 B.1/9 C.9 D.-27 What do I do to solve this?? Thanks
Tuesday, May 19, 2015 by penny

Math
Frank build fence sections using a vertical slats noted to horizontal board how many fence sections can he make with 32 dozen flat how many horizontal boys will he need
Tuesday, May 19, 2015 by Lilly

math
Write the result in scientific notation. Multiply (8•10^3)(7•10^5) A.5.6•10^16 B.5.6•10^9 C.1.5•10^16 D.1.5•10^9 Is the answer A or B?? because 8•7=56 and you put a decimal between the five and six but if I add the exponents I get Eight and ...
Tuesday, May 19, 2015 by hopeless

math help please!!!
In this question how do you know when to add or subtract?? Simplify 100^12/100^8 A.100^12/8 B.100^96 C.100^4 D.100^20 Is the answer C or D?? Thank you
Tuesday, May 19, 2015 by penny

math
how do u sole this equation 2s+3=14s
Monday, May 18, 2015 by gamer65

math
A farmer build a fence to enclose a rectangle pasture. He used 190ft of fence .Find the total area of the pasture if its 50ft long
Monday, May 18, 2015 by gamer65

Math
A ferris wheel has 16 cars spaced equal distances apart. The cars are numbered in order from 1-16. What is the measure of the angle of rotation that will map the position of car 16 onto the position of car 13? A) 22.5 B) 45 C) 67.5 D) 90 I think it's D
Monday, May 18, 2015 by Gaby

math
what is the perimeter of a computer graphic with sides measuring 5 square root , 6 square root 108 , 2 square root 147 and 5 square root 8.
Monday, May 18, 2015 by Annmarie

Math
AN ATHLETIC FIELD HAS THE SHAPE OF A 40 YARD BY 100 YARD RECTANGLE WITH A SEMICIRCLE AT EACH END. A RUNNING TRACK THAT IS 10 YARDS WIDE SURROUNDS THE FIELD. FIND THE AREA OF THE ATHLETIC FIELD WITH THE TRACK INCLUDED.
Monday, May 18, 2015 by Drew

Math
What is “a, b and c” in this hyperbola? (y-2)^2/5-(x-3)^2/6=1
Monday, May 18, 2015 by Kate

Math
One phone company charges $12 per month plus $.05 per minute after the first 500 minutes. A second phone company charges $10 per month plus $.04 per minute after the first 300 minutes. How many minutes would a subscriber have to use so that the cost of the two plans is the ...
Monday, May 18, 2015 by Luke

math
List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.
Monday, May 18, 2015 by Anonymous

math
Shania has a box of coloured beads.2/5 of them are red.1/3 of the remainder is yellow and the rest is blue. What fraction of the beads is blue in percentage
Monday, May 18, 2015 by patrice

math
Estimate the area under the curve f(x) = 16 – x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. Answer to the nearest integer.
Monday, May 18, 2015 by Anonymous

Math
A circular plate has a diameter of 6 inches. A pancake in the center of the plate has a radius of 2 inches. How much of the plate is not covered? Use pi as 3.14.
Monday, May 18, 2015 by Dre

math
The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16. Find S20
Monday, May 18, 2015 by Rose

math
Write the first 5 terms of the sequences defined by the recursive formula t1= 7, tn= 2tn-1 - 3n, n>1
Monday, May 18, 2015 by Resetta

math
An oil painting is worth $400. Its value increases by 7% each year compounded annually. What is the value of the painting after 6 years (using the formula A=P(1 + i)^n
Monday, May 18, 2015 by George

math please help
An oil painting is worth $400. Its value increases by 7% each year(compounded annually) What is the value of the painting after 6 years? How would the graph change of the initial value of the oil painting was more than $400? Less than $400?
Monday, May 18, 2015 by George

math
if a kid ran 3.4 miles in 30 minutes at the gym and he goes everyday for a week at the same distance how many miles will he have run?
Monday, May 18, 2015 by chris

Math
A Voting Poll: Candidate A: 30% Candidate B: 50% Undecided: 20% The Table above summarizes the results of an election poll in which 4000 voters participated. In the actual election, all 4000 of these people voted and those people who chose a candidate in the poll voted for ...
Monday, May 18, 2015 by Lily

Math
A chord subtends an angle of 68° at the centre of a circle of radius 200mm. Find the length of the chord.
Monday, May 18, 2015 by Michelle Kulno

please help math
Simplify the expression. 7t^4*7t^4 A.49t^8 B.14t^4 C.49t^16 D.14t^4 Is the answer A??
Monday, May 18, 2015 by aloha

math please help
An oil painting is worth $400. Its value increases by 7% each year(compounded annually) What is the value of the painting after 6 years? How would the graph change of the initial value of the oil painting was more than $400? Less than $400?
Monday, May 18, 2015 by George

Math
Ari begins painting at 12:00 noon. At 12:30 he estimates that 15.75 gallons of paint are left, and at 2:00 he estimates that 10.5 gallons of paint remain. If the paint is used at a constant rate, how many gallons of paint were there at the start of the job? I feel dumb for not...
Monday, May 18, 2015 by Linda

math please
Add or subtract exponents? I don't know when to add or subtract it's all confusing. 100^12/100^8 A.100^12/100^8 B.100^96 C.100^4 D.100^20 If I added it would be D If I subtract it would be C Please help I don't know which one is right. Thank you
Monday, May 18, 2015 by aloha

Math
√216t + √96t
Monday, May 18, 2015 by M

math
how many square feet to carpet a rectangular floor that measures 24 by 19 feet?
Monday, May 18, 2015 by mike

math
An oil painting is worth $400. Its value increases by 7% each year(compounded annually) What is the value of the painting after 6 years? How would the graph change of the initial value of the oil painting was more than $400? Less than $400?
Monday, May 18, 2015 by henry

math
A contest winner is given a choice of 2 prizes: Prize 1: $1 today, $2 tomorrow, $4 on day 3, and so on, for 30 days. Each day the winner recieves twice as much as the day before Prize 2: $1 today, $3 tomorrow, $9 on day 3, and so on, for 20 days. Each day the winner recieves 3...
Monday, May 18, 2015 by Anonymous

Math
A park has a rectangular playground area that has a length 66 feet and width of 42 feet. The park department has 75 yards of fencing material. Is there enough fencing material to enclose the playground area. Explain
Monday, May 18, 2015 by Anonymous

MATH if work is correct
Determine the number of terms in the geometric ssequence: 1/25, -1/5, 1, -5,...., -78125 i get n=8 is this correct
Monday, May 18, 2015 by MINNIE

Math
a rectangular tank with a square base of side 60 centimeters and a height of 45 centimeters is one third filled with water. water from a tap flows into the tank at 6 liters per minute. how long will it take to fill the tank completely? (1 liter=1,000 cm3
Monday, May 18, 2015 by James

math
An oil painting is worth $400. Its value increases by 7% each year(compounded annually) What is the value of the painting after 6 years? How would the graph change of the initial value of the oil painting was more than $400? Less than $400?
Monday, May 18, 2015 by Yiu

MATH HELP! LAST QUESTION!
Hallie is trying to win the grand prize on a game show. Should she try her luck by spinning a wheel with 6 equal sections labeled 1 to 6 and hope she gets a 5, or should she roll two number cubes and hope she gets the same number on both cubes? Explain.
Monday, May 18, 2015 by Anon101

Math
In how many different orders can you read 4 books
Monday, May 18, 2015 by Steve

math
what are the first four numbers of the sequence represented by the expression n(n-2)-3 a)-5,-2,1,4 b)-4,-3,0,5 c)-3,0,3,6 d)-2,0,2,4 i think its c am i right?
Monday, May 18, 2015 by Superman

math help please
What is the perimeter of a computer graphic with sides measuring? 2√18, 2√32, 2√50, and 3√12 centimeters The perimeter is _______ centimeters.
Monday, May 18, 2015 by Ann

Math Help!!!
How many 3 letter sequences can be formed if the first letter must always be a consonant (not a, e, i, o, u), the second letter must always be a vowel (a,e,i,o,u) and 3rd letter must be different from the first. A. 2100 B. 4056 C. 3250 D. 2625 I chose A... i guessed
Monday, May 18, 2015 by tanisha

Math Help!!!
How many ways are there to choose a potato and two green vegetables from a choice of three potatoes and seven green vegetables? A. 126 B. 63 C. 21 D. 252 i chose A. But im 50% not sure Please help test tomorrow something similar
Monday, May 18, 2015 by tanisha

Math
i can't figure this out if someone could please help me that would be great. x3 " 3y for x = 4, y = -4 is it 0 ? 3*4=12 and 3*-4=-12= 0
Monday, May 18, 2015 by Carol

math Help!!!!
You have 1 red marble, 1 blue marble, 1 yellow marble and 1 white marble. You draw 2 marbled out of the bag without replacing. What is the probability that you may choose 1 red marble?
Monday, May 18, 2015 by tanisha

math...Please help!!!!
This is a standard deviation question. I don't know much about standard deviation. Here it goes... Teachers making 30,000 to $60,000 the union is considering a $1,000 pay raise. A. Will the standard deviation change and the mean and the median stay the same? B. Will the ...
Monday, May 18, 2015 by tanisha

HELP!! MATH!
A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. 1. What is the probability of selecting a purple marble and then a white marble? 2. What is the probability of selecting ...
Monday, May 18, 2015 by Anon101

Math HELP! Ms.Sue
A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. 1. What is the probability of selecting a purple marble and then a white marble? 2. What is the probability of selecting ...
Monday, May 18, 2015 by Anon101

Math
Problem is: 58,000.000 KM being converted to light-years I did 58,000,000 x 365 x 24 x 60 x 60 and came up with 0.0000006131 and converted that to 6 x 10 to the negative 6. My teacher says it should have been 6 x 10 to the negative 5? Could you explain where I went wrong? ...
Monday, May 18, 2015 by Kyle

math
Multiply and write it in scientific notation. (8*10^3)*(7*10^5) A.5.6*10^16 B.5.6*10^9 C.1.5*10^16 D.1.5*10^9 Is the answer A? I really don't know how to do scientific notation😱
Monday, May 18, 2015 by aloha

math
In this question do I add, subtract, or multiply the exponents? 100^12 ------ 100^8 A.100^96 B.100^4 C.100^20 Thank you
Monday, May 18, 2015 by kalie

math help please
f^2*f^3 Do I add the exponents or multiply? Thank you. would it be f^5 or f^6?
Monday, May 18, 2015 by aloha

math
In the expression-5-4x^2+9, what is the coefficient of x? A.-4 B.-5 C.5 D.9 Is the answer B?? Thanks
Monday, May 18, 2015 by kalie

Math Please Check
Please check my answers! Thank you! Simplify the following expressions. Collapse “x” terms, and/or simplify fractions and exponents. 1.) (12/5) / (36/20) = 4/3 2.) x^13*x^3 = x^16 3.) x^4 / (x^2)^3 = 1/x^2 4.) x^-3 / x^2 = x^-5 5.) (x^2-8x+16) / (x-4) = x-4 6.) x^(-1...
Monday, May 18, 2015 by Erin

Math
Remove the xy-term by rotation of axes, reduce the resulting equation to standard form and trace the curve on the new axes: 16x^2-24xy+9y^2-60x-80y+100=0
Monday, May 18, 2015 by Ruby

Math
Remove the xy-term by rotation of axes, reduce the resulting equation to standard form and trace the curve on the new axes: 13x^2-10xy+13y^2=72
Monday, May 18, 2015 by Ally

math
The range in a frequency distribution is 22. If the lowest value is 3, what is the highest value?
Monday, May 18, 2015 by Reannon

Math
x^-1/2(x+3)^1/2+X^1/2(X+3)^-1/2 x^-1/2/(X+3)/2 +X/2(1/2(X+3))
Monday, May 18, 2015 by Deborah

grade (5) math
Design a rectangular dog pen that has the greatest possible area and keep within a budget of $50. Your pen needs at least one gate for your dog. Fencing is $1.00 per foot, fence posts are $2.00 each, and gates(3 feet wide) are $5.00 each. What is the area of a pen? pls help me!!!
Monday, May 18, 2015 by ary

math
Mary wants to build a fence in the yard to keep her dog from running away. She only has 60 feet of fencing. If she wants to create a rectangular space that has a length that is twice as long as the width. How long is each side of the rectangular space?
Sunday, May 17, 2015 by sasha

Math
Voting In a survey of 350 registered voters in belair,123 said that they would vote for the democratic candidate for mayor. if registered voter is selected at random, what is the probability that this person will vote for the democratic candidate.
Sunday, May 17, 2015 by Daine

Math
Could someone show me the formula to convert KM to Light-Years? Thanks for any help you can give me.
Sunday, May 17, 2015 by Kyle

Math
The Oregon Trail was 1930 miles long. Imagine that a car could travel on that exact trail at a consistent rate of 50 mph. How many hours would it take?
Sunday, May 17, 2015 by Amari

Math
Determine whether the infinite geometric series converges. If so, find the sum 1/4+1/16+1/64+1/256....
Sunday, May 17, 2015 by Sharen

math
A restaurant offers a 13% discount on chicken wings on Mondays. If Travis eats $7.95 worth of chicken wings on Friday, how much would those wings cost on Monday?
Sunday, May 17, 2015 by victoria

Math!!! Please help!!!
Find the coefficient of x^7 for (x-3)^11 Use the binomial theorem to expand (2y-3x)^5 Prove that (n over r)= (n over n-r) for all integers where n is greater than or equal to r and r is greater than or equal to zero Prove that (n over n-2) + ( n+1 over n-1)= n^2 for all ...
Sunday, May 17, 2015 by Sally

math
. A jacket costs $94.95. It is on sale for 30% off. Estimate the sale price.
Sunday, May 17, 2015 by Natalie

Math
A cable is 32 feet 10 1/2 inches long is to be cut into 8 1/2 inches lengths. Allow 1/16 inch for each saw cut.
Sunday, May 17, 2015 by Richard

math
. Estimate the sales tax and final cost of a book that costs $12.95 with a sales tax of 6%.
Sunday, May 17, 2015 by Natalie

math
A real estate agent receives a 9% commission for every house sold. Suppose she sold a house for $112,000. Estimate her commission.
Sunday, May 17, 2015 by Natalie

Math
There eight girls competing in an ice=skating competition. In how many ways can they finish in first, second and third place? 366 1,680 2,016 40,320 I think it is 2,016
Sunday, May 17, 2015 by Karla

math
This math is killing me! How do I find the area of a flower bed in square feet if it is triangular in shape and the base is 3 yards and the height is 2 yards? Please help, I am feeling overwhelmed.
Sunday, May 17, 2015 by Island Grandma

Math
There were 36 flower bloomed. How many did not bloom?
Sunday, May 17, 2015 by Eab

Math
An oil company in Houston, Texas is hiring a geologist. The company interviewed 16 candidates. After the interviews, they ranked the top 5 candidates from first to 5th. How many lists can be formed?
Sunday, May 17, 2015 by Maria

math
A contest winner is given a choice of 2 prizes. Prize 1:$1 today, $2 tomorrow, $4 on day 3 and so on, for 30 days. Each day the winner recieves twice as much as the day before. Prize 2: $1 today, $3 tomorrow, $9 on day 3, and so on, for 20 days. Each day the winner recieves 3 ...
Sunday, May 17, 2015 by Yiu

math
Which expression can be used to find the area of a triangle that has a height of 7 units and a base of x units where the height stays the same but the base changes? A. 7x B. 7x/2 C. 7/2 D. x/2 I think x/2, am I correct? Please help.
Sunday, May 17, 2015 by Island Grandma

Math
Express 4.9sin(x)+4.4cos(x)in the form ksin(x+ϕ)
Sunday, May 17, 2015 by Dan

Math
Five cards are dealt from a deck of 24 cards to form a euchre hand. Is this a combination or permutation? 4 actors are chosen To play the Beatles in a film. Is this combination or permutation?
Sunday, May 17, 2015 by Maria

Math
Count the number of ways to award first place to third place to the top three groups in an engineering competition.
Sunday, May 17, 2015 by Maria

math
A contest winner is given a choice of 2 prizes. Prize 1:$1 today, $2 tomorrow, $4 on day 3 and so on, for 30 days. Each day the winner recieves twice as much as the day before. Prize 2: $1 today, $3 tomorrow, $9 on day 3, and so on, for 20 days. Each day the winner recieves 3 ...
Sunday, May 17, 2015 by Rose

Math
Geoff planted dahlias in his garden dahlias have bulbs that divide and reproduce underground in the first year Geoff garden produced 4 bulbs in the second year it produced 8 bulbs and in the third year it produced 16 bulbs if this pattern continues how many bulbs should Geoff ...
Sunday, May 17, 2015 by ciara

Math
Seven students are running for four junior class representative positions in the upcoming student council elections. How many different ways can the students be chosen?
Sunday, May 17, 2015 by Lucy

math for college readiness
Suppose y varies directly with x. Write an equation relating x and y. y = −30 when x = 6
Sunday, May 17, 2015 by jessica

Math (Solving Equations)
Find all solutions (answers should be given in simplified form). Some answers may involve the number i. *I will use lowercase l to represent absolute value lines.* 3 lx-1l + 4 = 19 We've never really worked with absolute value in solving equations before. Do I distribute ...
Sunday, May 17, 2015 by Leah

Math (Solving Equations)
Find all solutions (answers should be given in simplified form). Some answers may involve the number i. (x^2/6) - (2x/3) = 3 + (x/2) I turned (2x/3) into (4x/6) and subtracted it from (x^2/6) to get: x(x-4) / 6 I turned 3 into 6/2 and added it to (x/2) to get: (x+6) / 2 So ...
Sunday, May 17, 2015 by Leah

Math
How many posts will be needed if the fence has 47 sections
Sunday, May 17, 2015 by Serenity

math
If Brian wants to split the 3 3/5 cups of chocolate syrup that he has into separate containers that each hold 3/10 of a cup, how many containers will he need?
Sunday, May 17, 2015 by Anonymous

Math
A shaded circle has a diameter of 12 feet. Within the circle, is another white circle with a radius of 2 feet. What is the area of the shaded circle.
Sunday, May 17, 2015 by Elaine

math
Jaime mixes purple paint. She uses three pints of blue paint for every four pints of red paint. Jaime wants to mix more paint exactly the same color. She has 14 pints of red paint. How much blue paint does she need?
Sunday, May 17, 2015 by eab

Math
If you subtract twelve from twice a number, the result is eight. What is the number?
Sunday, May 17, 2015 by Beth

math
The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16. Find S20
Sunday, May 17, 2015 by Yiu

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