Math(Please help)

184,813 results, page 69

Please Proofread my Essay

I've made plenty of changes to my essay. Could you please proofread it? Thanks! Is Beauty Really Skin Deep?

physics-bobpursley/drwls please check

bobpursley/ drwls please help me with my post on Sunday, April 15 at 10:16pm and 10:19pm. Thanks!


Please see the Algebra post on the current question page. Help still needed and appreciated thank you

algebra please help Dr.Bob

please Dr.Bob answer this for me...i have to got bed soon...i really need to know the answer!!


1. Can I say who is calling please? 2. Who's calling please? (telephone conversation) Are both the same? What is the meaning of 'say' in #1? Does it mean 'ask'?

precalc. please help:)

(square root y-3)^2=(1-square root 2y-4)^2. how do i do this???? i am clueless, pleaseeee help!!!! i^-7. how do I do this please describe! thanks for your time and help, I really appreciate it:)

English-help please

Could someone please take a moment to take a look at my previous post on English. Thank you very much:-)

Calculus Please Help

Find k for which the limit below exists, and find the limit. lim x->1 (2x^2 + kx +4)/(x-1) Please show me how to do both procedures. Thanks

geometry A please help

given <A compl to <B <C is compl to <B <A=(3x+y) <B=(x+4y+2) <C=(3y-3) find the measure of all 3 angles show all work please I don't know how to do it thank yu

Earth Science

20. Contrast point source pollution and nonpoint source pollution. Can someone help me please?!?!?! Asap please?!?!?!?!


The mass of a 10p coin is 6.5g find the mass in kilograms of the coins in a £10 bag of 10p. Answer please:?????????


Solve each system 3x+2y= -2 9x- y= -6 I know how to solve for x but i get really lost trying to figure out how to solve for the second variable


if 3M/2N=0.125, what is the value of N in terms of M? This is the workout solution.... 3M=2N(0.125) 3M/0.125=2N 24M=2N 12M=N I still don't understand....Please help..


Need help with these problems please. I do not know how to break them down correctly. Thank you. 4x7+6-10 divided by 5 7-16x3 divided by 8+5 25 divided by 5x5+6-4


Please help me I'm stuck on this one: (5x4)-2=12+ I'll try (5x4) 20-2=12+ answer 18 or (5x4) 20-2=18 12+18=30 Really I don't think either is right

MATH Please help me

Male: 60,63,65,70,66,80,85,73,79,80,83,85,81,76, 77,90,91,88,78,92 Females: 62,69,70,72,78,77,79,83,80,88,90,90,98,100, 66,67,65,63,69, 83 Can you hellp me I need to find: A) P value and the Z value of this data with a Alpha Value of 0.05.


If the Risk Free Rate is 2% and the expected inflation rate is 3%, what is the nominal interest rate? Please show formula.


for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work


for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work


Prove identity Cot⭕sin⭕sec⭕= 1 How would i do this one please help me. Thankyou


Jeremy has 19 coins of 2 different values. The total value of the coins is $1.00. What are the coins? How many of each coin does he have? Explain please


Which of the following homogeneous systems have a nontrivial solution? 5x+ y + 5z =0 −2x + 2y− 4z = 0 4x− 3y + 6z = 0 can someone please explain how you know


Please help me find the slope of a line that is perpindicular to the line to the line containing the points -2, -1 and 2, -3. m = -2 m = 2 m= -1/2 m = -1 I think it is a, but I have no idea


I need help to find out the area of base, how to find it and how to find the total volume for a cone on a cylinder please help


I've done these problems for the past 4hrs and i can't get them right please its my only questions left.1-12 1.x + 3 > 5 2.7 > x + 5 3.x - 8 ≤ -6 4.-4 < -6 + x 5.9x > 18 6.-3x > 6 7.x/4>0.5 8.x/-14>1/7 9.-10 ≥ 5x 10.-16 ≥ -8x 11.-4x < ...


A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the numerical values of ...

someone please help me. - Precalc

Rewrite the expression tan(90°−θ)sinθ as one of the six trigonometric functions of acute angle thetaθ. Please show work + answer. I have a few of them to do. Thanks.


Mascot: Number: Bisons 17 Cougars 4 Huskies 18 Knights 32 Other 3 a. About how many students would vote for the Huskies if the entire student body of 1600 voted? About how many would vote for the Knights? b. Suppose the students surveyed were in the spanish club. Do you think ...

Precalculus(Please check and help)

Find the Equation. Please check the answers and help. Thanks! 1.) Ellipse with center (0,0), foci on x-axis; x intercepts; major axis of length 12, minor acis of length 8. I got : x^2/144 + y^2/64 = 1 2.) A parabola with vertex (0, 0) and focus (5, 0). I got : y^2 = 20x 3.) ...


I really need a math dictionary... I need the following definitions Please: point line intersecting lines parallel lines vertical lines horizontal lines acute angle obtuse angle right angle square rectangle trapezoid rhombus pentagon hexagon octagon triangle circle chord ...


The directions say to use a grapking utility to approximate (to two-decimal-place accuracy) any relative minimum or maximum values of the function: y=x^3 - 6x^2 + 15 Can someone please help me because my graphing calculator is not working!!!

3rd grade math

the greens family they had 8 people plus 2 they r going to disenyland they have $3.40 and each person cost 38 cents will they hav enough money to go to thier destionation please explain

math-rational equations

how do I solve 5/x-3+3/x+3=7x/x^2-9 please explain in detail, I am having trouble once I get to the part where I need to simplify. I have so far the LCD is x^2-9 then the equation changes to (x^2-9) 5/x-3+(x^2-9) 3/x+3=(x^2-9) 7x/x^2-9 or (x+3)*5(x-3)*3=7x after this I'm stuck...


How do find the inverse function for this problem: f(x) = -(x+3)^2, x is greater or less than 3 I know the first thing you do is switch the variables, so it looks like this: x = -(y+3)^2 Then expand: x = -y^2-6y-9 And solve for y: x + 9 = -y^2-6y I get a little confused after ...


1.Say I am dividing 4xcubed + x + 7 by x+15 do i need to add in an x squared or can I divide it how it is? Sorry that is confusing 2. I have a question that says, "on what bounded intervals is the function increasing/decreasing" (on a graph). I'm not sure what it is asking for...


a room has a floor area of 1,025ft^2 and a 10-ft-high ceiling. the houing code requires at least 200ft^3 per person.what is the maximum number of people allowed in the roomm please help me i am confused


Please help, I need to write down the complete solution for the equation x^2 -3x+0 So far I have added 3x to both sides giving x^2 =3x Now I am a little stuck! Any help would be very much appreciated


How do I teach my first grader the parts of a sentence. She gets the subject confused with predicate. She had a test and she was given a 33F. I want her to succeed in school. She scored 100 in her reading and math. Please help me!


How can you make 7 by only using the digits 1, 2, 3, and 4? You can put two numbers together (ie 12 or 34). You can use the operations: addition, subtraction, multiplication, (NO DIVISION!!), exponents, and parentheses any way you want!! Please help!!!! I also need 13, 17, and...


my teacher gave me exam review booklets and there is something i don't understand.. the question is : Find the slope of a line that passes through the points (-9,-3) and (-7,-1). if someone can please explain to me how to solve this it would help majorly ! :)


Please let me know if is it true? If exactly 15 seconds of speech are to be sampled at a rate of 44 100 samples per second and each sample is represented by 16 bits of data, then the resulting file size will be more than 1.4 megabytes.

Can someone help me please? MATH

Identify the sampling technique used to obtain this sample: Each person boarding a plane is asked to flip a coin; those showing “tails” have their luggage searched.


An average song is 5,000 bytes (5B). ow many songs can an 4 gigabyte mp3 player store? I'm not looking for an answer, but please explain how to solve this problem? I'm confused. There are many other problems like this on my homework and I don't know what to do.


ok so i havent done domain and ranges for a while so i need some help this is just a generic question but i want to make sure i know how to do them before starting calc so can someone please explain how i would heres a function f( t) = t+ 3 /(t2 – 5t – 66),


How much must you deposit in an account that pays 6% semi-annual interest, compounded annually, to have a balance of $9000 in 15 years? I'm stuck with this question, please explain the steps for the answer.

College Algebra

Hello, I have been trying to do my math homework for a few hours now and can not figure out how to find the indicated intersection or union in interval notation. Example: (-1,5)n[0,8) Please help me!!

math help please

2. A teacher asks her class of 22 students, “What is your age?” Their responses are shown below. 19, 19, 14, 14, 16, 19, 19, 16, 16, 15, 17, 16, 17, 16, 15, 14, 15, 15, 17, 14, 16, 15 Find the mean, median, and mode for the data. If necessary, round to the nearest tenth. (...

math Ms Sue help??

Calculate the area of the trapezoid, which is not drawn to scale. Is this formula right? A = (5+4) x 11/2 =49.5 Paraell sides are 8 in and 11 in. top is 5 inch bottom is 4 in. Wtih two little boxes on each side. Please help me understand ?

Math Help

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS). Please answer this ASAP! Thank you so much whoever answers! :)


Find all real numbers x such that x^2 -8>0. Write your final answer in interval notation. I really just need a starter step. I remember these questions, but I'm not sure how to start. Please help!

3rd grade math

Where did i find word problems specially for number rounding, I also need the methods and answers, because teacher marked compleatly wrong, for what i taught to kid. Can any body help please

College Math

Brent invested $5607 in an account at 2% compounded weekly. Calculate the total investment after 7 years. Please show me the steps. I tried using this formula but it did not work. A=P(1+r/n)^6x1

Math 157

Help please! Write an expression for the cost c, if a printer charges $1.75 for binding, plus 5 cents for p pages for copies of a community groups annual report Thanks I have a mental block with these problems.

consumer math

The Jones hope to accumulate $12000 for a sunroom over the next 6 yrs. How much would they need to invest right now at 3.9% compounded quarterly to reach goal? Please help

Math - Calculus

The region in the first quadrant bounded by y=6x^2 , 2x+y=8, and the y-axis is rotated about the line x=-1. The volume of the resulting solid is: Please help me set up the integral for this one, I'm not sure how to do it. I've tried ∫[-4/3,1] pi (8-2x-1)^2-(6x^2-1)^2 dx, ...

math help

What is the smallest number i must multiply 315 in order to make it a perfect cube? Please tell me the method you sed and how you got the answer. I've been doing guess and check and it is time consuming.


Can you please help with this one. Find an​ nth-degree polynomial function with real coefficients satisfying the given conditions. n=4 2 i and 4 i are zeros; f(-1)=85 f(x)= ​(Type an expression using x as the variable. Simplify your​ answer.)

Math help please!

Mrs. Miller sells a house for $179,000. If she earns a commission of 6%, how much money does she earn? Write a porportion and show your work. Can someone help Me understand how I would solve this? Thanks!

question please help

I've tried to answer this question, but I don't know if its right. Identify cultural influences on foods eaten in the province of P.E.I. Potatoes raised in PEI show the influence of the Irish who settled in the region. ..thats all I got but I need more info on it. please help...

grade 10 science can anyone help me please

do you any websites that can explain the sesonal varities in cnadaina lakes more better, like when it's like 4 digrees somthing wierd happens, type layers are formed in winter..... i tried looking in the internet but couldn't find it. please help me.

Physics-please help!!!

A 190 g particle is released from rest at point A inside a smooth hemispherical bowl of radius 25.0 cm. Calculate the gravitational potential energy at A also, how do you find kinetic energy if you aren't given velocity? please help me! i would really appreciate it

SOC 101

Social settings of the different forms of social structure described by Durkheim, Tonnies, and Lenski is quite interesting. Please tell me the likes and differences of these sociologists. I cannot understand the extrememly complicated jargon while researching. Please help!

Law and Society

I need help with my commerce assignment concerning law. Please outline some possible options of resolving the following issue- recent shooting in Bondi in Sydney's east on 15th April 2011. (e.g. kinds of courts, etc.) PLEASE HELP!!!

Stress & Strain (Help Please)

A tie bar is made of a material having a tensile strength of 231 MPa and has to carry a load of 255 kN. What id the diameter of the bar if a factor of safety of 7 is applied? ANS = 99.2 mm Cannot figure out how to get the answer. Need help please. Thank you

Ratios and Rates - Last One!

Please help me with the following problem: Convert each rate using dimensional analysis. Round to the nearest tenth, if necessary. 4.5 qt / min = ____ gal / h A. 67.5 B. 33.8 C. 56.3 D. 65 I think the answer is A. Is this correct? Please help me by checking my answer. Any help...

Cultural Anthropology

What are two key differentiators about anthropology compared to psychology and Sociolog. I also need to provide examples, however my textbook is no help, can someone please give me some refrences to read over to answer this question please?

U,S, History (please help)

Who was responsible for writing the amendments that later became the bill of rights?? A) George Washington** B) Patrick Henry C) George Mason B) James Madison I think it's A, but I'm not sure, it would mean the world if someone could please check my answers

Math-Needing Help Quick!

When Beth finishes college, she has a balance or $2876.37 on a credit card with an annual percentage rate (APR) or 17.3%. She decides to not make any additional purchases with her card until she has paid off the balance. Assuming the minimum payment is 2% of the balance, find ...

Chemistry(Please check)

1) The Ka for acetic acid is 1.8e-5. What is the pH of a 3.18M solution of this acid? I did 1.8e-5 = x^2/3.18 x=sqrt 1.8e-5 X 3.18 = 7.56e-3 pH=-log(7.56e-3) = 2.12 The pH is 2.12 2) At 25 degrees celsius, the pH of a 1.75M NaCN solution (the Ka for HCN is 4.0e-10) is ? 4.0e-...


4ft 9in=____in 8yd 1 ft=____in 6yd 2ft=____in please help!!!!!!


Could you please check these thanks. Directions: Find each product -7(y+3) Answer: -7y-21 a(4a-1) Answer: 4a^2 -2x^2(x^2-4x+2) -2x^2+8x^2-4x^2 Answer: 2x^2


Given: f(x)=2+x g(x)=sqrt(x-7) h(x)=2x^2-5 Determine: g(h(x)) This is what I've got so far: f(x)=2+x g(x)=sqrt(x-7) h(x)=2x^2-5 g[h(x)]=sqrt(h(x)-7) And I don't know if that's right or not >_< Please help!


can someone please explain this problem? (-> is an arrow) assume that limit x-> 4 f(x)=0 and limit x-> 4 g(x)=3 1. limit x-> 4 (g(x)+3


the lcm of two numbers is 30 the difference between the 2 numbers is 5 and their sum is 25 what are the 2 numbers please help


Just so I know I am understanding this, can you please let me know if I am doing this right? Simplify: 24u - 6(8 - 4u) + 52 24u -48 + 24u + 52 48u + 4 Thanks!!!!


A basketball team won 28 more games than they lost. They won 35 games, how many games did they play? Please help, Thanks!


Bunches of 6 roses were selling for $8. Anita paid $40 for roses. How many roses did she buy? PLEASE HELP!


Can each set line segments form a triangle? Why or why not? -- AB = 1/2 mile -- BC = 1/3 mile -- AC = 1/4 mile Please help. Thank you


if 0< theta < 90 and tan theta equals pie3/2, find cos theta.i put 2/pie 7 but i was wrong please correct.


Find the appropriate cost function in each case: Fixed cost, $200; 50 items cost $2000 to produce. help me please! ty!!


You have 33 dogs and 4 kennels. Divide the dogs up evenly so the same number of dogs is in each kennel. Help please. Not how to work it out. Thank you.


Melvin estimate 645 + 322 by adding 600 + 300. Is his estimate sum an over or under estimate please? Ty

7th grade math

What feature of a cylinder uses the given units? a. centimeter b. square centimeter c. cubic centimeter Please help! Thank you!


how do i solve for x when x = log(32.5)? here's my work: log x = y 10^y = x then, x = log (32.5) 10^x = 32.5 10^x = 17/2 this is where i get stuck... i don't know how to get rid of the bases... can some one please teach me how? thank you! :)


Solve the proportion using cross products. 20 Miles 15 Miles ________ = __________ 50 Miles h Hours Please Answer!!!!


18 play baseball, 17 play basketball, 30 play neither or both. I'm trying to make a Venn diagram but don't understand how. Please help!

math (please help!)

What is the sum of all the constants k such that |x^2−169|−x−k=0 has three distinct real roots?


Find the intersection of two lines. i have the answer just please tell me how it was made 4x-3y-4=0 , 4x+2y+5=0 -5y/-5 = 9/-5 y= 9/5 4x-3(-9/5)-4=0 5(4x+27/5-4=0) 20x+27-20=0 20x+7=0 20x/20=-7/20 x=-7/20 (-7/20, -9/5

Math 222

Please help me solve this system of equations? Sorry addition/equal key is not working. -2x plus 9y equal 3 -3x-4y equal 22


The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.


The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.


can some one please help me with the following questions as i don't understand them please (a) write down the derivative of each of the functions f(x)=E7x and g(x)=cos(2x) using the product rule differentiate the function k(x)=E7xcos(2x) (b)write down the derivative of each of...

drwls please check

Can you please check my physics posts. Thanks!

Please solve it for me!! Please...Maths

Solve for the value of x: 6log(x^2+1)-x=0


X=1/2at^2 Solve for a Solve for t Can you please show me how to do this please Thank u

Algebra 1 Please Help

simplify (2√5+3√7)^2 step by step. please tell me how to do this

Spanish-Check please! I need help

Please check-I'm having a problem interpreting these questions and I have to answer them for homework. Could you please check my translation I'm not sure what these questions mean and I have to answer them for homework ¿Qué necesitas para comer en cereal?does this ask what I...

Math 8R: Operating w/ Sci.Notation HELP! (2ND QS)

Yellowstone National Park has an estimated 2.5 x 10 (to the 6th power) visitors each year. The Great Smoky Mountains National Park is the most visited of all the National parks, and it has approximately four times the amount of visitors annually that Yellowstone has. How many ...


please please please help me balance these two equations... 1. K2Cr2O7+H2C2O4.2H2O--> K[Cr(H20)2(C2O4)2].2H2O+CO2 2. K2Cr2O7+H2C2O4.2H2O--> K[Cr(H20)2(C2O4)2].3H2O+CO2

Math Check please

Will you please check my work for me. 1)The equation of a parabola is shown. y=1/14X^2. What are the coordinates of the focus? (0,3.5) <---- (0,-4) (0,7) (0,-3.5) 2)The equation x2 + (y + 3)2 = 36 models the boundary on a local map for which Darren can hear his friend Tom ...


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