Thursday

October 23, 2014

October 23, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

Please check my answers I think they are right if not please tell me where I went wrong. Thanks The annual net income of general electric for the period 2007-2011 could be approximated by P(t) = 3t^2- 24t +59 billion dollars (2<t<6) where t is time in years. a) compute p...
*Thursday, October 2, 2014 at 11:55pm*

**6TH GRADE MATH**

Tony and Alice are trying to reduce the amount of television they watch. For every hour they watch television, they have to put $2.50 into savings. The table shows how many hours of television Tony and Alice have watched in the past two months. Tony watch 18.2 hours in March. ...
*Thursday, October 2, 2014 at 11:44pm*

**Math**

I don't understand how this statement is true: If AB = BC then B is the midpoint of AC
*Thursday, October 2, 2014 at 11:35pm*

**Math**

I have the following data set of 12 numbers that make up landmarks. 5,,7,7,7,8,9,10,14,15,15,16,16,17,18. How do I display them on a bar graph?
*Thursday, October 2, 2014 at 11:28pm*

**math**

A 70% acid solution is to be mixed with a 40% solution. How many gallons of each solutions are needed?
*Thursday, October 2, 2014 at 11:12pm*

**Math **

According to the U.S. Census Bureau's most recent data on the marital status of the 242 million Americans aged 15 years and older, 124.2 million are currently married and 74.5 million have never been married. If one person from these 242 million persons is selected at ...
*Thursday, October 2, 2014 at 10:20pm*

**Math Question**

Suppose that y varies inversely as x. If y = 63 when x = 3, the constant of variation is 189. True Or False?
*Thursday, October 2, 2014 at 10:05pm*

**Math**

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 10:02pm*

**4th grade math**

explain what do you need to do to extend number pattern?
*Thursday, October 2, 2014 at 9:50pm*

**math**

f(x, y) = 3y cos x, 0 ¡Ü x ¡Ü 2¦Ð what is the saddle point for this?
*Thursday, October 2, 2014 at 9:30pm*

**math**

explain what do you need to do to extend number pattern?
*Thursday, October 2, 2014 at 9:17pm*

**math**

Suppose that a crayon weighs the same as a marker. You have a box of crayons, 4 extra crayons, and 20 markers. Let b be the number of crayons in the box. A scale balances with all the crayons on one side and all the markers on the other. You remove markers from the scale so ...
*Thursday, October 2, 2014 at 9:14pm*

**Math **

(11/8)(-1/3) = my answer is 11/24
*Thursday, October 2, 2014 at 9:05pm*

**Math 3 quick questions**

Factor: A.). 4(3x+1)^2 -5(3x+1) +1 B.) 5(2-3x)^2 -28(2-3x)+15 C.) 2(3a-4)^2 - (3a-4)(a+2)-6(a+2)^2
*Thursday, October 2, 2014 at 9:02pm*

**6th Grade Math**

If you are given a true equation and you add the same number to each side, the resulting equation is also a true equation. If you are given a false equation and you add the same number to each side, will the resulting equation be a true equation or a false equation?
*Thursday, October 2, 2014 at 8:59pm*

**math**

Find eight team members: write the integer represented
*Thursday, October 2, 2014 at 8:59pm*

**Social Studies (SS)**

Sorry I accidentally put math but can you please Describe George Washington's expeditions into French territory.
*Thursday, October 2, 2014 at 8:56pm*

**Math**

Lisa can run a mile in 8 minutes.Which is the most resonable time for her to run a 10-km race?
*Thursday, October 2, 2014 at 8:36pm*

**Math**

When buying gasoline, you notice that 14 gallons of gasoline is approximately the same as 53 liters. Use this information to find a linear model that relates gallons to liters. Then use the model to find the number of liters in 25 gallons. Round your answer to the nearest tenth.
*Thursday, October 2, 2014 at 8:18pm*

**Math**

Lucas says that since 40x70 and 60x50 both have factors with a total of two zeros, they will both have products with a total of two zeros. Is this correct? Explain. 40x70=2800 and 60x50=3000. They both have zeros in the answer. Right
*Thursday, October 2, 2014 at 8:04pm*

**math**

Astronomers sometimes use angle measures divided into degrees, minutes, and seconds. One degree is equal to 60 minutes, and one minute is equal to 60 seconds. Suppose that <J and <K are complementary, and that the measure of <J is 48 degrees, 26 minutes, 8 seconds. ...
*Thursday, October 2, 2014 at 7:59pm*

**Math**

7/9*3 in simplest form. How do you multiply with a whole number?
*Thursday, October 2, 2014 at 7:58pm*

**Math**

Solve each problem. Blank x 10=2 tens
*Thursday, October 2, 2014 at 7:46pm*

**math**

Find the actual and approximate number days: september 8, 2008 to december 25, 2008
*Thursday, October 2, 2014 at 7:46pm*

**math**

Find the actual and approximate number days: december 8, 1972 to june 25,1980
*Thursday, October 2, 2014 at 7:41pm*

**Math**

1/6 * 5/8 in simplest form.
*Thursday, October 2, 2014 at 7:39pm*

**Math**

Find lim h->0 [f(2+h)-f(2)]/h where f(x)=|x-5|-7
*Thursday, October 2, 2014 at 7:00pm*

**math**

Select the expression that represents the statement "27 more than a number
*Thursday, October 2, 2014 at 6:50pm*

**Economics**

State of the good is pure private, pure punlic, or mixed. 1. County zoo 2. UPS Delivery 3. Air conditioning 4. Flood control projects 5. Elementary education 6. Pollution 7. Math tutor I think they are: 1. Mixed 2. Mixed 3. Mixed 4. How is a project a good? 5. Pure private 6. ...
*Thursday, October 2, 2014 at 6:38pm*

**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*

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