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October 24, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

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math
eva wants to make two pieces of pottery.she needs 3/5 pound of clay for one piece and 7/10 pound of clay for the other piece.she has three bags of clay that weigh 4/5 pound each.how many bags of clay will eva need to make both pieces of pottery?how man pounds of clay will she ...
Thursday, October 2, 2014 at 6:08pm

Math
between were erika is standing to the vertical distance from the kite is 75 meters. how high is the kite in meters a.)125 b.)100 c.)25 d.)15 My answer is c am i correct ?
Thursday, October 2, 2014 at 5:56pm

Math
If you divide a certain number by 17, the quotient is 47 and the remainder is 2. What is the number? What is the sum if all the numbers less than 496 that divides evenly into 496? The ratio of girls to boys in a class is 3:2m. If there are 35 students in the class, how many ...
Thursday, October 2, 2014 at 5:54pm

Math
hi, I need to know what interval mean I couldn't find it
Thursday, October 2, 2014 at 5:39pm

Math--4 practice questions?
1. t + 27 = 21 t = –6 t = 47 t = 6 t = –47 2. 24 = m – 32 m = –8 m = 56 m = 768 m = –56 3. Tamara has eaten 1,400 calories for breakfast and lunch. She has 800 more calories, c, that she can eat for dinner. Write and solve an equation to find Tamara&#...
Thursday, October 2, 2014 at 5:35pm

Math
Find the equation of the tangent line to the graph of y=3cot^4x at x=pi/4 3cot^4(pi/4)=3(1)=3
Thursday, October 2, 2014 at 5:34pm

Math
15. If a 10-pound sack of potatoes costs $6.55, how much would 1 pound cost? Round your answer to the nearest cent. A. $1.65 B. $6.55 C. $.65 D. $.66 C?
Thursday, October 2, 2014 at 5:17pm

Math (Implicit Differention)
use implicit differentiation to find the slope of the tangent line to the curve of x^2/3+y^2/3=4 at the point (-1,3sqrt3)
Thursday, October 2, 2014 at 5:05pm

Math - Please Check My Answer - Probably Last One!
Please help me with the following: The volume of a cylinder is found using the formula V=πr^2h,where r is the radius of the base and h is the height. The volume of a rectangular prism of the same width (2r) and height h, as the cylinder, is found by multiplying the area ...
Thursday, October 2, 2014 at 4:57pm

Math
the scale drawing of a billboard is 21ft wide and 10.5ft high, what is its scale?
Thursday, October 2, 2014 at 4:53pm

Math - Please Check My Answer
Please help me with the following: Which of the following statements most accurately describes the difference between 3x^0 and (3x)^0, if a difference exists? A. There is no mathematical difference between 3x^0 and (3x)^0. The two are equivalent expressions. B. In the ...
Thursday, October 2, 2014 at 4:36pm

Math Help!!
3. Which one of the following pairs of numbers contains like fractions? A. 6/7 and 60/70 B. 1/2 and 3/2 C. 4/8 and 12/16 D. 5/4 and 4/5 17. Which of the following pairs of numbers contain like fractions? A. 5/6 and 10/12 B. 6/7 and 15/7 C. 3/2 and 2/3 D. 31/2 and 43/4 Ms.Sue ...
Thursday, October 2, 2014 at 3:04pm

Math
Solve the equation. 6 = 2(x + 8) - 5x A. 2/3 B. 3 1/3 C. - 2/3 D. -3 1/3 I don't know :/
Thursday, October 2, 2014 at 2:58pm

math
Solve the equation. -6p - 21 = 3p - 12 A. 1 B. 3 C. –3 D. –1 im sure its D but I wanna make sure am I right?
Thursday, October 2, 2014 at 2:53pm

Math Help!!
Someone please help.
Thursday, October 2, 2014 at 2:44pm

Math Help!!
13. Simone has 5 employees in her flower shop. Each employee works 6 4/15 hours per day. How many hours, in total, do the 5 employees work per day? A. 30 B. 28 C. 31 1/3 D. 30 2/3 6 4/15 * 5 = 31 1/3
Thursday, October 2, 2014 at 2:25pm

Math
10. Yolanda spends 8 2/3 hours per month playing soccer. Approximately how many hours does she play soccer in a year? A. 416 B. 104 C. 197 D. 28 I think it is B because there are 12 months in a year.So I took 8 2/3 and multiplied it by 12 and got 104 for my answer.
Thursday, October 2, 2014 at 1:48pm

Math
Write the given sentence as an equation. Tim’s age in 7 years will be three times what it was 19 years ago. A. 3(t + 7) = t – 19 B. t + 19 = 3(t – 7) C. t + 7 = 3(t – 19) D. 3(t + 19) = t – 7 need help
Thursday, October 2, 2014 at 1:42pm

Math
Four times the sum of a number and 15 is at least 120. Let x represent the number. Find all possible values for x. A. x ¡Ý 26 B. x ¡Ý ¨C15 C. x ¡Ý 15 D. x ¡Ý ¨C26 I tried it and cant find it.
Thursday, October 2, 2014 at 1:22pm

Math
Solve the equation. x/5 + 9 = 4 A. 65 B. –25 C. 5 D. 20 I think its B
Thursday, October 2, 2014 at 1:15pm

Math
Solve the equation. - 1/3m – 7 = 5 A. –4 B. –15 C. –36 D. 6 lost here, any help :)
Thursday, October 2, 2014 at 12:49pm

Math
The depth d in feet of the water in a bay at is given by d(t) = 3/2 sin (5πt/31) + 23 where t is time. Graph the depth of the water as a function of time. What is the maximum depth of the water to the nearest tenth of a foot?
Thursday, October 2, 2014 at 12:44pm

Math
2. Jane is making a suit which requires 2 5/8 yards for the jacket and 1 3/4 yards for the skirt. What is the total amount of material she needs? A. 4 3/8 yards B. 3 2/3 yards C. 4 yards D. 3 1/2 yards A?
Thursday, October 2, 2014 at 12:43pm

Math
You drop a rock off a bridge. The rock’s height, h (in feet above the water), after t seconds is modeled by h = -16t2 + 541. What is the height of the rock after 2 seconds? A. –64 feet B. 605 feet C. 509 feet D. 477 feet I have no clue... please help
Thursday, October 2, 2014 at 12:41pm

math
Solve the equation. x - 9 = -6x + 5 A. 14 B. 7 C. 2 D. 21 please help :(
Thursday, October 2, 2014 at 12:30pm

Math
How do you divide FFE/AC? (Note: These are hexidecimals)
Thursday, October 2, 2014 at 11:53am

Algebra ll
X^2 - 25/2 AND 37/K^2-K-30 I really need help with these two problems.? •Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. •Find the domain for each of your two rational expressions. •Write the domain of ...
Thursday, October 2, 2014 at 11:25am

Math
Mr Kim mix cement and sand to make a mixture.He uses 2 pails of cement for every 5 pails of sand. (A) Find the ratio of the number of pails of cement to the number of pails of sand. (B) If he uses 24 pails of cement,how many pails of sand does he use? (C) If he uses 35 pails ...
Thursday, October 2, 2014 at 10:06am

Math
if jerry bought 6 shoes for 85 dollars, how much would fred have to pay for 17 pairs at the same rate?
Thursday, October 2, 2014 at 9:55am

math n2
AB is a vertical cliff. C is a point 380m from the cliff. the angle of elevation to the top of the cliff is 58 degrees. calculate the height of the cliff
Thursday, October 2, 2014 at 9:39am

math
I am a decimal with a value in the thousands place.In my tenths place,you will find a digit one less than the digit in my Hundreds place and three less than my other digit.My last digit is 3.What decimal am I?
Thursday, October 2, 2014 at 7:08am

math
joyce and her father are 48 and 20 years younger than her grandfather.if the product of ages of joyce and her father is 480,find the equation which represents their age
Thursday, October 2, 2014 at 4:31am

Math
A quart is one fourth of a gallon. Dan drank half a quart of milk. What fraction of a gallon did Dan drink?
Thursday, October 2, 2014 at 4:01am

math
divide 15 into thirds and subtract from 14 divide in half
Thursday, October 2, 2014 at 3:21am

Math
How to simplify ((x-8) - (x-3))/(8 - x)?
Thursday, October 2, 2014 at 1:27am

math
If a recipe calls for 2 2\4 of something but I only have 1\4 measuring cups. How many 1\4 cups do I need to use?
Thursday, October 2, 2014 at 12:12am

Math
Janice thinks that 20 hundredths is equivalent to 2 thousandths because 20 hundreds is equal to 2 thousands. Use words and a place value chart to correct Janice’s error.
Thursday, October 2, 2014 at 12:04am

Math
1/(a-1) + 1/b = c solve for a
Wednesday, October 1, 2014 at 11:47pm

Math - Mixed Numbers
Jared used 1 2/5 bags of soil for his garden. He is digging another garden that will need 1/5 as much soil as the original. How much will he use total? Is the answer 1 17/25 ?
Wednesday, October 1, 2014 at 10:59pm

Math
A rectangular pool measuring 6 feet by 12 feet is surrounded by a walkway. The width of the walkway is the same on all four sides of the pool. If the total area of the walkway and pool is 520 square feet, what is the number of feet in the width of the walkway?
Wednesday, October 1, 2014 at 10:43pm

Math 1
write an equation that represents the following situation. Let x= the number of adults. Your equatin should start with "1220=" and use x as the only variable.. The number of students attending the fall play was 150 more than the number of adults attending. A total of...
Wednesday, October 1, 2014 at 10:06pm

Math help!
Find the first five terms of the sequence whose nth term is given. a: (-2)^n + 2^n b: n^2(-1)^n c: |10 - n^2|
Wednesday, October 1, 2014 at 9:57pm

Math
fun center rental popcorn machines for $20 per hour. In addition to the hourly charge, there is a rental fee of $32. Is the number of hours you rent the popcorn machine proportional to the total cost?
Wednesday, October 1, 2014 at 9:55pm

Math
The length of a rectangular board is 10 cm longer than its width. The width of the board is 26 cm. the board is cut into 9 equal pieces. What is the area of each piece? What are the possible dimensions of each piece?
Wednesday, October 1, 2014 at 9:45pm

Math
One hundred sixty acres is a square with a side length of one-half a mile. How many hectares are in one square mile?
Wednesday, October 1, 2014 at 9:39pm

math
Fern rounded to the nearest ten to estimate 548-132. She subtracted 540-130 and got 410. Is Fern's estimate correct? Explain.
Wednesday, October 1, 2014 at 9:26pm

math
tom and max has 72 football card
Wednesday, October 1, 2014 at 9:14pm

Math
Two-fifths of the instruments in the marching bands are brass. One-eighth of the brass instruments are tubas. what fraction of the band is tubas? if there are 240 band instruments total, how many are tubas?
Wednesday, October 1, 2014 at 9:00pm

Math
Each letter in this addition problem stands for a different digit, but every letter stands for the same digit everywhere it appears. For example, all of the C's stand for the same digit. Reconstruct the problem to find the value of SCENE. CUTS +CUTS ------ SCENE
Wednesday, October 1, 2014 at 8:56pm

math
A game room has a flooring that is 120 feet by 75 feet. A scale drawing of the floor on grid paper uses a scale of 1 unit:5 feet. What are the dimensions of the scale drawing?
Wednesday, October 1, 2014 at 8:56pm

Math
Hi, I have two questions here I need help with, thank you in advance. 1. Peggy scored 68 on her first three tests of the term. What would she have to score on the fourth test to have an average of 70 on the fourth test? 2. If you were to place the digits 1,2,4,8,9, one per box...
Wednesday, October 1, 2014 at 8:41pm

Math
Hal Fritz purchased a $5,000 bond at 95. The annual interest is 6%. What was the cost of the bond? What was the annual interest? What is the yield (to nearest tenth of a percent)?
Wednesday, October 1, 2014 at 8:36pm

Math
find limit of h->0 [f(8+h)-f(8)]/(h) where f(x)=sqrt(x)-8
Wednesday, October 1, 2014 at 8:23pm

math
2x^2+5x-1=0
Wednesday, October 1, 2014 at 8:22pm

Math
On what day in the year 1943 was the earth 300 000 minutes old? (give the month and day)
Wednesday, October 1, 2014 at 8:13pm

math
having trouble with these 2 problems & the process. -50 3/4 +(-6.05)+ 100= and 23 7/8 - 15 3/40 +(-3 4/5)= help please!!!!
Wednesday, October 1, 2014 at 8:11pm

Math
A car rental company charges $100 for the first 50 miles and $10 for every additional 10 miles. If Gregg traveled 150 miles, how much would he pay?
Wednesday, October 1, 2014 at 8:07pm

Math
If 8 jump ropes and 4 dolls cost $64, and 4 jump ropes and 8 dolls cost $92, how much will 12 jump ropes and 12 dolls cost?
Wednesday, October 1, 2014 at 8:07pm

math
if total ticket sales were $1625 adult tickets were $7.00 and student tickets were $3.00 and twice as many students bought tickets than adults, how many students and adult tickets were sold?
Wednesday, October 1, 2014 at 8:06pm

Math
A rectangular floor measures 546cm by 714cm. You have a lot of square tiles, each measuring 42cm by 42cm. How many of these tiles will you need to tile the floor?
Wednesday, October 1, 2014 at 8:01pm

math
A car rental company charges $100 for the first 50 miles and $10 for every additional 10 miles. If Gregg traveled 150 miles, how much would he pay? I know the answer intuitively is $200, but how do I set up this equation
Wednesday, October 1, 2014 at 8:00pm

Math help!
Identify the property of integers being illustrated in each of the following: a:(-2)(3) (the "E" letter) element of I b: (-4)0=0 c: -2(3+4)=-2(3) + (-2)4 d: (-2)3=3(-2)
Wednesday, October 1, 2014 at 7:58pm

Math (for Damon)
Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes and Steven lifted 15 boxes. The boxes that Nathan lifted each weighed 12 lb more than the boxes Steven lifted. Which expression represents the total number of pounds Nathan lifted? Let s represent the weight of...
Wednesday, October 1, 2014 at 7:35pm

Math
How do you solve (5,-1) -(2,-6) ________ (?,?)
Wednesday, October 1, 2014 at 7:30pm

Math plz.
Simplify the following expression. z – 2z + 4z + 6
Wednesday, October 1, 2014 at 7:21pm

Math question? :c
Use the Distributive Property to multiply. Show all steps. 7(c + 4)
Wednesday, October 1, 2014 at 7:21pm

math
Pam bought a new bedroom suit for $2588.she made a down payment of $188 and paid the remaining amount in 24 equal monthly payments.How much did she pay for each monthly payment? 188-24=164 is that how to do it? PLEASE REPLY BACK AND HELP ME!!!!!!!!!!!!!!!!!!!!!!!
Wednesday, October 1, 2014 at 7:21pm

math
the length of a table is 6 feet. On a scale drawing, the length is 2 inches. Write three possible scales for the drawing.
Wednesday, October 1, 2014 at 7:17pm

math
Im the same person from my other questions! Two stores sell the same computer for the same original price. Store A advertises that the computer is on sale for 25% off the original price. Store B advertises that it is reducing the computer’s price by $180. When Brittany ...
Wednesday, October 1, 2014 at 7:14pm

1 math question
8. Use the Distributive Property to simplify. Show all steps. 8(6 – 2)
Wednesday, October 1, 2014 at 7:14pm

Math help!
Identify the property of integers being illustrated in each of the following: a:(-2)(3) ¸ I b: (-4)0=0 c: -2(3+4)=-2(3) + (-2)4 d: (-2)3=3(-2)
Wednesday, October 1, 2014 at 7:11pm

Finite Math
Malika Agwani starts her career at the age of 25 and makes equal monthly deposits for 35 years into an annuity that earns 6.25% compounded monthly. She plans on retiring the age of 60 and would like to withdraw $3000 monthly for 25 years, bringing the account balance to $0. ...
Wednesday, October 1, 2014 at 7:05pm

math
If x is an integer and x is not equal to zero, which of the following are always positive and which are always negative? a: -x to the power of 4 b: (-x) power of 4 c: x to the power of 4 d: x e: -x
Wednesday, October 1, 2014 at 7:03pm

Finite Math
Laurie and Craig have purchased a new home. They paid $25,000 down and have a 15-year mortgage for which they pay $980 per month. If the interest is 8.25% compounded monthly, what did the house that Laurie and Craig purchased originally cost?
Wednesday, October 1, 2014 at 6:57pm

Math
Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays. I did 63 plus 9 equals 72 divided by 4...
Wednesday, October 1, 2014 at 6:43pm

Math
List these numbers from least to greatest 7/3, 3/4, 2/3, 0.5, 1.3
Wednesday, October 1, 2014 at 6:23pm

Math
(Checking my answers!) Marco and Drew stacked boxes on a shelf. Marco lifted 9 boxes and Drew lifted 14 boxes. The boxes that Drew lifted each weighed 8 lb less than the boxes Marco lifted. m − 8 14(m − 8) ** 9(m + 8) 112m Two stores sell the same refrigerator for ...
Wednesday, October 1, 2014 at 6:20pm

Math
Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays? Could somebody PLEASE HELP ME! It'...
Wednesday, October 1, 2014 at 6:18pm

Math help!
The number of students taking sophomore mathematics at Union College has been decreasing at the rate of 20 per year for many years. Assuming this trend continues, write a multiplication problem that describes the change in the number of sophomores taking mathematics at Union ...
Wednesday, October 1, 2014 at 6:18pm

Chemistry/Math
convert 0.01403 grams to ppm please show all step
Wednesday, October 1, 2014 at 6:07pm

Math-G7 Help please
Write a system of equations to match each of these problems. Then solve the equations using the method... Substitution, or linear combinations. _____________________________________ 1. Dan is 4 years older than his brother Gabriel. Together their ages equal 22. How old is ...
Wednesday, October 1, 2014 at 5:57pm

Math
Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays?
Wednesday, October 1, 2014 at 5:52pm

Math
Hot dog buns come in packages of eight Mrs. Wilson has a total of 40 hot dog buns draw a picture to find out how many packages of hot dog buns Mrs. Wilson has
Wednesday, October 1, 2014 at 5:45pm

math
a car traveling in a straight line has a initial velocity of 12.0 m/s.zoe steps on the gas and accelerates at at rate of 2 m/s2.The care ends up with a final velocity of 20.0 m/s.how long did it take zoe to reach this speed
Wednesday, October 1, 2014 at 5:41pm

Algerbra math
(7x^2+3x+9)+(2x^2+5x-2)
Wednesday, October 1, 2014 at 5:01pm

Math
Aiden drew a square that has an area greater then Dalton's rectangle. what could the sides of austin's square be?
Wednesday, October 1, 2014 at 5:01pm

math
Let y= -3x-2. Find the value of y (in parts (a)-(d)) for each of the following values of x: a: -1 b: 100 c: -2 d: -a in terms of a e: For which values of x will y be -11?
Wednesday, October 1, 2014 at 5:01pm

math
hello im having problems with my math 1 Wells College in Aurora,New York was previously an all -girls college.In 2005,the college began to allow boys to enroll. By 2012, the ratio of boys to girls was 3 to 7. if there were 200 more girls then boys in 2012, how many boys were ...
Wednesday, October 1, 2014 at 4:38pm

MATH
A water plant can process 25 million gallons of water a day. How many gallons of water does it produce per hour? Round to the nearest hundredth.
Wednesday, October 1, 2014 at 4:33pm

Math. idk?
6. Name the like terms in the following expression. 5m + 4 + 3m + 6p 7. Write an equation for the following: Twelve times h equals one hundred twenty minus thirty-six.State whether the equation is true, false, or an open sentence. Explain. 8. Use the Distributive Property to ...
Wednesday, October 1, 2014 at 4:33pm

Math- Multi-step word problems
A plane traveling from Phoenix to Washington, D.C with a tailwind of 20 miles per hour takes 3 hours. The return trip in the same wind, which is now a headwind, takes the same plane 3 hours and 12 minutes. What is the average speed of the plane in calm conditions? 600 miles/...
Wednesday, October 1, 2014 at 3:30pm

Math- Multi-step word problems
A canoe in still water travels at a rate of 10 miles per hour. The current today is traveling at a rate of 3 miles per hour. If it took an extra hour to travel upstream, how far was the trip one way? about 14 miles about 15 miles about 16 miles about 17 miles
Wednesday, October 1, 2014 at 3:29pm

Math- Multi-step word problems
A plane traveling from Chicago to Boston with a tailwind of 10 miles per hour takes 4 hours. The return trip in the same wind, which is now a headwind, takes the same plane 4 hours and 9 minutes. According to this problem, about how far is it from Chicago to Boston? 1800 miles...
Wednesday, October 1, 2014 at 3:28pm

Math--1 question
Write an equation for the problem below. Is the given value a solution? A farmer sees 56 of his cows out of the barn. He knows that he has 83 cows all together. Let c represent the number of cows still in the barn. Could c = 33? (1 point) 56 + 83 = c; no 56 + c = 83; no 83 + ...
Wednesday, October 1, 2014 at 3:12pm

Math
Write an integer to represent the final temperature. The day started out at 6am as 32 degrees rose 24 degrees by noon and dropped 14 degrees at 6pm.
Wednesday, October 1, 2014 at 3:02pm

math
how we can knew the minimum value of the point on a curve?
Wednesday, October 1, 2014 at 2:45pm

math
An oil tank has a capacity of 45 gallons.At the beginning of October it is 80% full.At the end of October it is 1/3 full.How many gallons of oil were used in October? a. 21 b. 25 c. 41 d. 27 e. 30 my answer is (e)30, 45 x 1/3 =15 ,so 2/3 = 30
Wednesday, October 1, 2014 at 2:30pm

Math Multiplication
What are the factor pairs of 642? Please dont ask what I dont understand because I cant find the answer
Wednesday, October 1, 2014 at 2:26pm

math
The diameter of a circle is increased by 50%.The area is increased by a. 50% b. 100% c. 125% d. 200% e. 250% please answer and explain
Wednesday, October 1, 2014 at 2:26pm

math
If the outer diameter of a cylindrical oil tank is 54.28 inches and the inner diameter is 48.7 inches,the thickness of the wall of the tank,in inches, is
Wednesday, October 1, 2014 at 2:23pm

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