Wednesday

July 30, 2014

July 30, 2014

Number of results: 109,777

**Algebra 2**

Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100 cm and a return swing of 99 cm. a.)On which swing ...
*March 7, 2013 by Amber*

**Math**

I need some help on figureing out how to answer these problems please i have never done this type of math before thank you Find the discount and total to be paid for each of the following: Amount Terms When Paid Discount Total $2.000 3/30 22 days $400 2/10 5 days $290.50 3/10...
*October 21, 2011 by Melissa Roberge*

**Physics**

Two straight and parallel wires of length 1.0 m carry a current - the first carries a currecnt of 9.0 A while the other wire carries a current of 4.0 A. What distance must separate the two straight and parallel copper wires if the force between them is to be 6.0 x 10-6 N? My ...
*December 8, 2010 by Jim*

**math**

I would let #1 = x. Then #2 = x+1 #3 = x+2 #4 = x+3 The problem says we want the sum of the first three. That will be x + (x + 1) + (x + 2) and that should be 60 more than the fourth. The fourth is x + 3; therefore, set them equal and add 60 to the fourth. Solve for x. Post ...
*August 16, 2007 by DrBob222*

**phyics**

If two cars are traveling along a straight road, one behind the other. the first is traveling at a constant velocity of 10 m/s. the second, approaching from the rear, is traveling at 22 m/s. when the second car is 300m behind the first, the driver applies the brakes, ...
*November 6, 2010 by billy*

**algebra**

2a+11=a+5 _____ 3 help 2a+11/3=a+5 is that the question? if it is 2a+11/3=a+5/1, then you cross multiply 3(a+5)=2a+11, distribute the 3, which equals 3a+5=2a+11 so now solve for a , bring them to one side, a=-4
*May 18, 2007 by debbie*

**complex numbers and imaginary units**

2i/1+i your question probably says 'simplify' multiply top and bottom by (1-i)\(1-i) and remember that i^2 =-1 so... 2i/(1+i) * (1-i)\(1-i) = (2i - 2i^2)/(1-i^2) = 2(i-i^2)/(1+1) =i+1
*May 23, 2007 by candace*

**Math**

How much is the total bill if the meal is $9.72 and the sales tax rate is 6%. I need to leave a 15% tip. Do I multiply?
*July 25, 2008 by jules*

**Algebra**

I know when solving inequalities the sign changes when you multiply or divide by a negative number, my question is does this happen in equations as well?
*February 23, 2010 by Michelle*

**statistics**

Suppose you want an 85 percent confidence level. What value would you use to multiply the standard error of the mean by?
*April 14, 2010 by cheez*

**math**

multiply; write in lowest terms 14xy/3x X 9x/8y There is just so much here.Would it be 23x^2 y / 11xy?
*July 4, 2010 by Hannah*

**Math**

What is 12/6 x 3-5? If following order of operations (PEMDAS) you would multiply 6 times 3 and which is 18 and then divide by 12 but this will not give you a whole number?
*November 22, 2010 by Hayden*

**5th Grade Math**

I need help in using the distributive property to rewrite this expression: (7 x 600) + (7 x 400) and then multiply.
*December 6, 2010 by Frankie*

**MATH!!!!!HELP**

2x+3y = 7 4x-3y = -19 6x=12/6 x = -2 this is elimination method. i have few questions, when do we know wen to add or subtract? multiply? how? i dont know nothing.
*January 16, 2011 by Andraline*

**Statistics**

Suppose you know and you want an 85 percent confidence level. What value would you use to multiply the standard error of the mean by?
*October 23, 2011 by Phil*

**algebra**

radicals multiply and simplify by factoring ____ ______ ^3|y^7* ^3|16y^8 unsure how to do root square sign.
*June 8, 2012 by Randy*

**algebra**

X-5/3 =1 Or X - 5 = 1 ______ 3 I'm trying to type and tell you it's x-5 over 3 equals 1 I don't know how to do I think I have to do reverse operation which is multiply
*October 14, 2012 by Marco*

**algebra**

X-5/3 =1 Or X - 5 = 1 ______ 3 I'm trying to type and tell you it's x-5 over 3 equals 1 I don't know how to do I think I have to do reverse operation which is multiply
*October 14, 2012 by Marco*

**math**

To square 75, one can multiply (70)(80) and add 25 to that product. Can someone explain how this would work, without calculating?
*May 3, 2013 by Jenny*

**math**

To square 75, one can multiply (70)(80) and add 25 to that product. Can someone explain how this would work, without calculating?
*May 3, 2013 by Jenny*

**Math 110**

Write 278 as a product of prime numbers. Multiply 28x72 using lattice method.
*March 30, 2014 by Nikki*

**Math**

MULTIPLY. WRITE EACH PRODUCT IN SCIENTIFIC NOTATION. 24.) (3 * 10^6)(2 * 10^12) 26.) (6 * 10^9) (5 * 10^4) Can you please show your work so I can get a better understanding of these problems?
*June 6, 2014 by InDireNeedOfHelp*

**math 5**

The date of the first Friday in November can be represented by thevariable F. Write an expression using F for each of the following dates in November. A. the first Tuesday B.the first Saturday C. the second Friday D.the third Friday
*October 11, 2011 by nelia*

**Calculus; Limits**

The percentage of research articles in a prominent journal written by researchers in the United States can be modeled by A(t) = 26 + (36/1 + 0.8(0.8)^−t'), where t is time in years (t = 0 represents 1983). Numerically estimate lim as t→+infinity A(t). I calculated ...
*March 11, 2012 by James*

**Chemistry**

I Have Two Questions 1)How would you calculate the number of nanometers in 8.1 cm? 2)What is the equivalent of 0.35 lb in grams? You need to learn to do deimensional analysis. It's easy. 0.35 lb to grams We know there are 453.6 g in a lb. We take the given (0.35 lb) and ...
*January 25, 2007 by Bryan*

**statistics**

A new treatment for AIDS is to be tested in a small clinical trial on 15 patients.The proportion p^ who respond to the treatment will be used as an estimate of the proportion p of (potential)responders in the entire population of AIDS patients. If in fact p=.2 and if the ...
*February 15, 2008 by todd*

**Trig**

Dalco manufacturing estimate that its weakly profit, P, in hundreds of dollars,can be approximated by the formula P= -4x+8x+7, where x is the number of units produced per week, in thousands. 1)How many units should the company produce per week to earn maximum profit 2)Find ...
*April 21, 2012 by Alex*

**Calculus**

1. Find the area of the region bounded by the curves and lines y=e^x sin e^x, x=0, y=0, and the curve's first positive intersection with the x-axis. 2. The area under the curve of y=1/x from x=a to x=5 is approximately 0.916 where 1<=a<5. Using your calculator, find a. 3...
*February 27, 2013 by Jessy152*

**Algebra**

Are these answer"s correct? What is the equation for the line that passes through the (-2,2) and has a slope of 5? Answer- Y=5x + 2 Y=5x +12 Y=5x -2 None of these C I believe this is the answer Find the value of x^3+2x^2-3 when x =3. Answer- 42 Solve 5x+3=13 for x. Answer...
*August 6, 2011 by lizzie*

**calc**

The demand curve for the comics is given by the following equation, where q is the number of copies the publisher can sell per week if it sets the price at $p. q=(388-p)**2/50 text( ) \(0<=p<=388\) (a) Find the price elasticity of demand when the price is set at $33 per ...
*November 2, 2011 by lc*

**binomial theorem again**

How do i do this question using the binomial theorem concept? It says, expand (2+x)^5 up to x^2 term, hence, expand (2 + x + x^2)^5 up to the x^2 term. I could do the first part, and the answer would be (32 + 80x + ...) But how should i make use of the answer i got in the ...
*August 4, 2009 by nicholas*

**English**

Could you please check these statements, please? Thank you. 1) the first who trusts/to trust are both possible? 2) "Let's check the answer to those exercises" She proposed checking the answers... She told/ordered us to check.... She suggested checking the answers She ...
*January 6, 2012 by Henry2*

**maths**

The body mass index is used to find the body weight that is appropriate for a persons height. It is calculated using the formula. I = W/H^2 (I = W divided by H squared) Where I is the body mass, W is the persons weight in kg, and H is the persons height in metres. Use the...
*May 10, 2007 by sarah*

**algebra 2 help please/check **

The first 3 terms in a geometric sequence are 1.1, 1.65, and 2.475. Part A: What is the sum of the first 6 terms of the sequence? Show your work. Part B: How does the sum of the seriesy differ from the 6th term? Explain. Part C: If the nth term in this sequence represents the ...
*May 20, 2012 by jenny*

**math**

what is the number feared by the pythagoreans I googled "number feared by the Pythagoreans" and checked the 3rd entry. This is what I found on that web site. Find the number feared by Pythagoreans, since it lies halfway between the only two integers that can be both the ...
*September 13, 2006 by Anonymous*

**Math 116**

could someone please help me with this question. I have no clue where to start... the line: y = 0.15x + 0.79 represents an estimate of the average cost of gasoline for each year. the line: 0.11x - y = -0.85 estimates the price of gasoline in January each year. a) do you expect...
*October 15, 2008 by Carmen*

**life**

what is boredom??? and why do i have it doing homework??? You can find the answer by tyoing my name in google :) The short answer is that you wouldn't need to do homework if you could download everything you need to know directly into your brain. Eventually we'll get to that ...
*January 30, 2007 by sam*

**Math**

Find the requested function and state its domain: f(x)= 4x+3 g(x)=4x-5 Find f/g and its domain. So I did 4x+3/4x-5, so the 4x's cancel out and 3/-5 is left. So my answer is 3/-5. Is this correct Now I just need to find the domain which I am not to sure about.
*October 7, 2010 by Hannah*

**Math**

Find the requested function and state its domain: f(x)= 4x+3 g(x)=4x-5 Find f/g and its domain. So I did 4x+3/4x-5, so the 4x's cancel out and 3/-5 is left. So my answer is 3/-5. Is this correct Now I just need to find the domain which I am not to sure about.
*October 7, 2010 by Hannah*

**math dealing with varibles**

solve this problem S-46=14 is it... a)34 b)31 c)32 d)none of the above do you know how to solve for S? You want all of the variables (in this case S) on one side and the numbers on the other. We have S on the left side; we leave it there. We need to move 46 to the right side. ...
*November 15, 2006 by Tre'Chon Williams*

**MATH**

Hi, Please help me find: V, a, and b. Ty An open box is to be made from a flat piece of material 8 inches long and 2 inches wide by cutting equal squares of length x from the corners and folding up the sides. Write the volume V of the box as a function of x. Leave it as a ...
*January 24, 2014 by MATH PLEASE HELP*

**Calculus (urgent!!)**

A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t is in seconds. A)Find the speed of the particle. Speed = ____________ (include units) B)Find the first positive time when the particle comes to a ...
*April 15, 2011 by Catherine*

**algebra**

If trend for the depreciation of the press continued, what would be its value in the year 2015? Show how you obtained your answer using the linear equation you found in part c). Answer: Show or explain your work here: e) If the trend continued, in how many years would the ...
*February 11, 2012 by jim*

**Math**

A researcher tagged 40 giant turtles in 2008. In 2009 , she returned and captured 50 turtles , 16 of which were tagged. In 2010 , she returned again and captured 30 turtles , 8 of which were tagged. a) Use a proportion to estimate the turtle population for 2009. b) Use a ...
*May 6, 2013 by Diana*

**PreCalculus**

Hi I need some assistance on this problem find the exact value do not use a calculator cot[(-5pi)/12] Here is my attempt RT = square root pi = 3.14... cot[(-5pi)/12]={tan[(-5pi)/12]}^-1={tan[(2pi)/12-(8pi)/12]}^-1={tan[pi/6-(2pi)/3]}^-1={(tan[pi/6]-tan[(2pi)/3])/(1+tan[pi/6]...
*January 29, 2010 by Kate*

**math**

Pg 220 # 59 Is this answer given correct for the following question?If it is not correct what is the appropriate answer Question: A quantity and its two-thirds and its half and its one-seventh together make 33. Find the quantity Answer: 14+ + 1/56 + 1/97 + 1/194 + 1/388 + 1/...
*April 24, 2008 by Krista*

**Algebra 2**

consider the interior angles of the triangle with vertices p=(=4.39,-0,948) q=(3.03,8.31) r=(4.21,6.54) find the angle of the vertex of p answer in units of degrees find the angle of vertex q answer in units of degrees
*October 18, 2012 by Emily*

**6th grade math**

Find the value fir each expression. Show your work. (13.28 - 7.8) divided by 4. I have the answer in the back of my book and when I try to work the problem out I keep getting the wrong answer. The answer is supposed to be 1.345 I can get the 1.34 but I get a remainder if 2. ...
*January 23, 2012 by Mad(:*

**Amestoy EL**

algebra how to work this problem 3.21 x n = 32.1 and estimate product 3.6 x 9
*October 23, 2007 by Ke'andre*

**5th grade**

why must a scientist estimate a measurement?
*September 2, 2008 by Jiovanni*

**Math**

Estimate the amount in each of the folloing problems. What is 48.3% of 1,500?
*September 3, 2008 by Brenda*

**3rd grade**

what is the best estimate of 89+12 a 90 b. 100 c. 80 d. none of these
*October 3, 2010 by tia*

**math**

how can you use rounding to estimate 331+193
*October 7, 2010 by hannah*

**math**

what numbers would you use to estimate the sum of 47 and 21?
*March 29, 2011 by Alison*

**calculus**

Estimate for x = 2, 4, 6, using the given values of f'(x) and the fact that f(0)=50 .
*January 28, 2011 by patel*

**Math**

Estimate to the nearest integer. Square root of -55
*April 28, 2011 by Dylan*

**Math**

Estimate to the nearest integer. Square root of 40.
*April 28, 2011 by Adam*

**5TH grade math**

estimate each sum or differnce. 7.4 + 3.1+ 9.8 How do I do this?
*August 25, 2011 by Alyssa*

**Calculus**

Suppose g (x) is increasing and concave up everywhere and g (A) = 9, g '(A) = 17, h = 0.01 estimate g(A-h)
*September 18, 2011 by Mandi*

**st. edwards**

use rounding to estimate 8,267-2,761=
*September 21, 2011 by Lisa*

**Math**

Use compatible numbers to estimate. 329 + 64 =
*September 22, 2011 by maria*

**math **

Use compatible numbers to estimate each difference.
*October 13, 2011 by gerry*

**Calculus**

If f(x) = x ln(1+x) estimate the value of ln (2.1) given that ln2 = 0.6931.
*November 20, 2011 by Helga*

**math**

How can I figure out the the estimate the diffrence between 53 and 37?
*January 19, 2012 by mary*

**Math **

Estimate the number of pints In 445 ounces?
*April 16, 2012 by Marie *

**math**

what would you estimate 0.526 to in the tenth place
*April 17, 2012 by shion*

**math**

how would you estimate 0.526 in the tenths place
*April 17, 2012 by shion*

**math**

Which formula should you use to estimate 78x33?
*May 1, 2012 by Fani*

**Math**

How can you use rounding to estimate 331 + 193?
*November 13, 2012 by Mikey*

**math**

use any method to estimate 667-651
*November 21, 2012 by Anna*

**math**

Estimate a 15% tip on a taxi ride that costs $23.25.
*November 29, 2012 by alex*

**math**

Estimate the product of 2/3 and 31. Describe your method. Please help me.
*January 14, 2013 by Anonymous*

**math**

does any one know how to estimate products? 6/10 x 5 3/4= I have no clue how to do this
*February 12, 2013 by Jared*

**MATH**

WHICH BENCHMARK FRACTION COULD YOU USE TO ESTIMATE THE PRODUCE OF 36 X 11/16?
*March 24, 2013 by ALEXIS*

**Calculus**

Estimate 6 0 6−x^2 dx using 3 left rectangles.
*April 18, 2013 by Brian*

**Calculus**

Estimate 6 0 6−x^2 dx using 3 right rectangles
*April 18, 2013 by Brian*

**Math**

How could the fact 36/6=6 help you estimate the quotient of 364,573/64?
*October 3, 2013 by Goochie*

**Math**

Use a power of ten to estimate the product 52.6 x 9
*October 15, 2013 by Cole*

**Math**

Estimate. 224% of 320 Please explain! :(
*October 23, 2013 by Anonymous *

**Math**

Estimate using compatible numbers 61114
*November 11, 2013 by Sandy*

**Math**

Estimate using compatible numbers 24x8
*November 11, 2013 by Sandy*

**math**

Estimate a 15% tip on a taxi ride that cost 23.25.
*December 10, 2013 by Sam*

**math**

Marissa plans to cut a wire that is 5 feet 3 inches long. How long should each of the cut pieces be if she wants 7 equal pieces of wire? Find the twenty-second term of an arithmetic sequence if the first term is 4 and the common difference is 10. Find the twenty-second term of...
*April 19, 2010 by joe*

**math**

transform the ff. into the form f(x) = a(x - h)2 + k: f(x)=x2-6x+4 f(x)=x2+4x+2 f(x)=3x2-5x+1 tnx a bunch!!!1 I'll do the third one for you, the first two are really easy f(x)=3x^2-5x+1 =3(x^2 - 5/3 x ) + 1 factored out the 3 from first 2 terms =3(x^2 - 5/3 x + 25/36 - 25/36...
*July 29, 2007 by olive*

**algebra 2 **

The first 3 terms in a geometric sequence are 1.1, 1.65, and 2.475. Part A: What is the sum of the first 6 terms of the sequence? Show your work. Part B: How does the sum of the seriesy differ from the 6th term? Explain. Part C: If the nth term in this sequence represents the ...
*May 19, 2012 by jenny*

**Algebra II**

The first 3 terms in a geometric sequence are 1.1, 1.65, and 2.475. Part A: What is the sum of the first 6 terms of the sequence? Show your work. Part B: How does the sum of the series differ from the 6th term? Explain. Part C: If the nth term in this sequence represents the ...
*May 27, 2012 by Danny*

**Networking**

A firm is assigned the network part 128.171. It selects a 10-bit subnet part. a)Draw the bits for the four octets of the IP address of the first host on the first subnet. b)Convert this answer into dotted decimal notation. c)Draw the bits for the second host on the third ...
*April 18, 2012 by Jennifer*

**English**

Can you correct the following rephrase from a grammatical and lexical point of you? The poem is narrated by the mirror and has a balanced structure with two verses mirroring each other. This emphasizes the idea of the first stanza, which describes the mirror, reflecting the ...
*January 21, 2010 by Franco*

**math**

Three hundred twelve viewers were asked if they were satisfied with TV coverage of a recent disaster. Gender Female Male Satisfied 90 53 Not Satisfied 124 45 (a) Find P(satisfied). (Give your answer correct to two decimal places.) (b) Find P(satisfied | female). (Give your ...
*May 28, 2013 by DeeDee*

**english**

The annual rainfall in Californias north valley averages twenty-three inches. So the rainfall next year will be twenty-three inches. a) true beyond a reasonable doubt b) probably true c) possibly true or possibly false The answer is (C) possibly true or possibly false- no one...
*April 14, 2008 by Chris*

**Pre-calculus**

Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x </= 3, y</=0, 1/2x+y</=5 Answer: -0.5
*August 25, 2008 by Lucy*

**pre-calculcus**

Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x </= 3, y</=0, 1/2x+y</=5 Answer: -0.5
*August 27, 2008 by lucy*

**Tyler**

Find the solution {in the interval of [0,2pi)} of: tan2x - 2cosx = 0 ( I know the answer is pi/6, but I guessed and checked. Please show the steps I need to go through in order to get the answer )
*November 29, 2008 by Trigonometry*

**Math / Algebra**

I would like to know if I got my answer right. I am supposed to find the LCM of 11(t-5)and 55(t-5). I thought that the answer was 11t-55 but I am a little bit lost can you please help me. Thanks
*March 27, 2010 by Learner*

**Geometry**

Find the area of a trapezoid ABCD with verticles A(2,2) B(4,6) C(4,-3) and D(2,-1). Should I use a graph and go from there? I'm just not sure of how to set this up. The book answer is 12units. I am not coming up with the answer
*April 10, 2011 by mary*

**algebra2 please check my answer thanks**

find the vertical asymptotes of the following rational function(remember VA is X) x+6/(x^2+11x+30 ) my answer is x+6/(x+6)(x+5) cancel alike term i get 1/(x+5 )and V.A:x=-5 is that right thanks
*October 13, 2013 by lisa*

**algebra2 please check my answer thanks**

find the vertical asymptotes of the following rational function(remember VA is X) y=x+6/(x^2+11x+30 ) my answer is x+6/(x+6)(x+5) cancel alike term i get 1/(x+5 )and V.A:x=-5 is that right thanks
*October 13, 2013 by lisa*

**new tech**

Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (Subtracts) to form an unstable intermediate. I know this has been answered but can not find....was able to get the first part of questions but was stuck on this one,,,, have ...
*May 24, 2011 by sarah*

**Algebra 1**

One long-distance telephone company offers a plan such that the first 20 minutes costs $.99 and each additional minute costs $.09. Solve an inequality to find the maximum amount of full minutes you can talk for $5.00. At first I got: 5 is greater than or equal to .99+(1.8-.09m...
*October 14, 2013 by Julia*

**calculus**

In 1970, the total enrollment in public universities and colleges in a country was 5.1 million students. By 2004, enrollment had risen to 14.3 million students. Assume enrollment can be modeled by exponential growth. (a) Estimate the total enrollments in 1980, 1990, and 2000...
*May 16, 2013 by jeff*

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