Math(Please help)

184,813 results, page 97

math please help!!

Solve the problem. Anne and Nancy use a metal alloy that is 24.9% copper to make jewelry. How many ounces of a 20% alloy must be mixed with a 27% alloy to form 100 ounces of the desired alloy?

Physics

1 kg block of ice at 0 degrees celsius placed in cooler. How much heat will the ice remove as it melts to water at 0 degree celsius. I know the answer is 80kcal but don't know the math that backs up the answer-please help!

MATH

To get an A in history, a student must score an average of 90 on four papers. Scores on the first three papers were 92, 83, and 88. What is the lowest score that a student can make on the last paper and still get an A? CAN YOU PLEASE SHOW IN DETAIL THANKS

math

How can I factor this: 2a^2 + 19a +42 ? I've been trying to do this for so long but I can't figure it out. Please explain the answer as well. The only way I can come up with is trial and error, and I've been trying so long and nothing fits..?

Math

Hi Trying to work with confusing Taylor series....any assistance would be much appreciated!! How can I use T(x)=5-9((x-2)^2)-3((x-2)^3) to approximate the f(0) ???? I realize that Taylor series f(x)=f(a)+f'(a)(x-a)+f''(a)((x-a)^2)etc... but the above T(x) is centered at x=2, ...

Math Gr. 9

a) Evaluate each power 3^1, 3^2, 3^4, 3^5, 3^6 b) Examine the final digit of each of your answers. What pattern do you notice? c)Use the pattern you found in part b) to determine the final digit in the number 3^3234. Explain. please & thankyou !

Math

There are 20 balls in a bowl. 7 black, 6 blue, 5 green, 4 red, and 3 yellow. Balls must be drawn until 4 different colors are drawn. What is the probability that one is black? Please walk me through if you can...

Math

The sum of the ages of Monica and her mother is 70. Monica is 4 less than 1/2 her mother's age. Find their ages. I've been trying to do this for the past 20 minutes. I think the question is wrong, but try for yourself. Help please!

math 3

the distance between los,angeles,ca and boston .ma is about 3,020 miles. twice a year,Li makes a roundtrip from LA to Boston. how many total miles does Li travel each year for these trips? please solve.

math

fiona invested $1000 at 6% compounded continuously. at the same time, maria invested $1100 at 6% compounded daily. how long will it take for their investments to be equal in value? step by step please!

math

fiona invested $1000 at 6% compounded continuously. at the same time, maria invested $1100 at 6% compounded daily. how long will it take for their investments to be equal in value? step by step please!

Math

What powers of two prime numbers will give a product of 1000...000(this sign --> { below the 1000...000 and below this { telling 2012 zeros ) Please show your solution and how you did it. Thank you so much.

math

Cecily is swinging. The swing goes back and forth twice every five seconds. How many seconds does it take her to go back and forth one hundred times? About how many minutes is that? Please help me.

math

As a a test of a new measurement process, 10 measurements are made on pieces of glass known to have conductivity 1. The average of the 10 measurements is 1.07. Indicate whether 1 and 1.07 is a parameter or statistic and explain why. I know 1.07 is a statistic. Please explain ...

math >.<

for your birthday party, you make a map to your house on a 3-inch-wide by 5-inch-long index card.what will be the perimeter of your map if you use a copier to enlarge it so it is 8 inches long? Please explain!:(

math for the office professional

convert 628 kilometers to miles.round off your answer to two decimal places A.1,010.65 B.1,010.64 C. 390.24 D.390.23 m y answer is c I know d is wrong .can someone please help

math

A metal cube with an edge of one foot is melted into a rectangular solid one-eighth of a foot in height. What is the area of the top of the new solid? a. 1/64 sq.ft b. 1/8 sq.ft c. 1/4 sq.ft d. 4 sq.ft e. 8 sq.ft please answer and explain

math

Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet? please explain to me

Math

Winona needs to average 5.8 points from 14 judges to win the competition. The mean score of 13 judges was 5.9. What is the lowest score she can receive from the fourteenth judge and still win? I have no idea. Please help. Thanks

math

you have apple, mapple, oak, poplar, and spruce trees. about how many different groups can u make with three different trees? please help this is alot of work and i have until 4;45 to get it all done!

math

Ariel wants to choose 5 players for her basketball team. There are 7 players to choose from. How many different teams can Ariel make? A) 21 B) 35 C) 42 D) 56 please help me! And show how you got the answer! I thought you were supposed to go 7*6*5*4*3 but that doesnt equal any ...

math

a rectangular frame has a length of 3 and 1/8 feet and an area of 2 and 3/4 feet. what is the width ,w, in feet, of the frame? 0.67 feet i don't know if i am correct so i want you to show the work with me please because i really don't understand what the question is asking me...

math

Tim needs to fill 3 20L barrels with oil. Oil dispenser flows at 100ml/s . How long to fill up 3 barrels. Please help by showing all steps so I can understand how the answer was determined. Thanks!

math

Could someone help me solve this Absolute Equation? Please? I really can’t figure it out and I would really appreciate any help... Question~~ Evaluate the given expressions when a = 3, b = -3, c = 4, and d = -1 (a/c)|c| + b – d My answer~ (a/c)|c|+b-d (3/4)|4|+(-3)-(-1) (3...

MatH

1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 2.n-8>5 n>-13 n>1 n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number of adults. The bus ...

math

You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much will you save? Calculation Without Distribution (Show all steps.) Please help!!! i know how to do it with distribution, but i am not sure how to do ...

Math- Please Help

Solve Each inequality. 1. m-7<6 m<-1 m>1 m<13 m<-13 2. x+4.5>5.5 x>10 x>1 x>0.1 x<1 (there was a _ underneath all of the <'s in that question) 3. p+12>9 p>21 p>3 p>-21 p>-3 4. Translate the following statement into an inequality...

Math

1. Big Al has a set of non-metric wrenches that have these numbers on the end: 7/16, 1/4, 9/16, 3/8, 5/16, 1/2 Which of these wrenches fits the largest nut? Which fits the smallest nut? I am very confused on how to figure this out. Please help.

Math 2

A fathwr is 5 years more than 4 times his age. In 5 years he will be 3 times his sons age then. How old is the son now? Did this problem.and we didnt underarand it as a group. If you can please help us and explain thia question

Math

Azeem bought 30 dozen eggs. Out of which 30 eggs were rotten. If he bought it for Rs 1800. What should be the selling price of each egg to get a profit of one rupe per egg. Please explain it I can't get it

math

hi i've never posted a question before. help me out? A jacket's original price is $65.00. It is on sale for 40% off. You have to pay 5% sales tax. What is the final price of the jacket? Please help me out, thank you so much!!!!

math

A number cube with the numbers 1 through 6 is rolled. find the given probability P(number < 2) (1 point) 1/6 2/6 *** 4/6 3/6 2. P(number ≥ 3) (1 point) 4/6 1/6 2/6 5/6 I think it's A .. I'm not quiet sure. please help 3. P(complement of 4) (1 point) 1/6 5/6 2/6 *** 4/6

math

What is the value of t in the equation below? (7^-64)x(7^-150)/(7^-7)x(7^2)=7^t Help please i get lost when its a huge problem like this but if it's short i can solve it. (7^-64)x(7^-150)/(7^-7)x(7^2) = 7^(-64-150+7-2) = 7^-209 so, t = -209 answer is= 209 and its wrong i don't...

Math , please help

I have a number of patients this month who need to start a course of treatment. The treatment involves an injection now, followed by 4 more injections at monthly intervals, and then 3 more injections 2 months apart. That's a total of 8 injections in 1 year. Each month, I have ...

math

Line AB is the diameter of circle C. If the endpoints of the diameter are A(3, -4) and B(-2, 5), what are the coordinates of the center of the circle C? I've forgotten how to do this, heh heh... help please?

Math.. check answer please

A restaurant has 11 booths and 12 tables. Write the ratio of booths to tables as a fraction. is the answer 11:12 or 11 to 12 or 11/12?

math please check and help!!!!

what is the vertex and line symmetry for f(x)=1/2(x+8)^2+4 and what is the max/min value of f(x)? Is the answer for the vertex (8,4) is the min value of f(x) (-8,4)

Math please help!

Find the equation of the tangent line to the curve: 2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( 3 , 1 ). The equation of this tangent line can be written in the form y = mx+b

Math HELP

I have my answers at the bottom but please do these questions so I can check my answers. Check my answers as well. Subtract these fractions. !Reduce them! 1. 5/7 - 3/10= 2. 11/18 - 5/12= 3. 1/3 - 1/6= 4. 7/12 - 1/16= 5. 7/8 - 3/10= 6. 7/8 - 1/12= 7. 7/10 - 2/5= 8. 3/4 - 1/2= ...

MATH(please check)

A newspaper has 80 pages. If 20 of the 80 pages are devoted to advertising. What percent of the newspaper consists of advertising? How do u start this?

Math

The quadratic function f(x) = x^2 is transformed to g(x) = -2/3(x+3)^2 + 6 The point (6,36) on the graph of f is transformed to which point on the graph of g? Could someone please show me how to solve this:\

Math

Prove the identity: tanA/secA+1 = secA-1/tanA Can u please explainit to me step by step? I greatly appreciate your help! Thanks:)

math

Rob is 2/3 of his dad height.If his dad is 6'3" tall how tall is Rob? Give the answer in feet and inches. Please help me I do not get this.

Math

How do I work out:if life expectancy of male is 78.9 and female is 83.6. Life expectancy is % lower than female. What is formula please

Math (Trigonometry)

1. If sec x + tan x = 3/2 and 0 ≤ x ≤ pi/2 then the value of sin x is... 2. If 0 ≤ x ≤ pi/2 and tan²x + sec x = 5 then cos x = ... Please help

math

An apple pie 10 cm in diameter costs $1.50. Then, an apple pie 20 cm in diameter should cost a. $3.00 b. $4.00 c. $4.50 d. $6.00 e. $8.00 please answer and explain

math

The number of diagonals, d, in a polygon of n sides is given by the formula d=n^2-3n/2. If a polygon has 90 diagonals, how many sides has it? a. 8 b. 10 c. 12 d. 15 e. 20 please answer and explain

math

What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a rational number. Please help me I don't know what to do.

Math

A circle has the circumference 28.26cm. What is the area of the circle? use PI as 3.14. i am confused in how to even solve with the circumference to get the area. Please help

Math please help

A recipe for 48 biscuits uses 2 2/3 cups of biscuit mix. How many biscuits are made from each cup of biscuit mix?

Math Help Please!!!

Use the function rule to complete the table Table= x= -2, -1, 0, 1, 2 y= (figure out y) Function rule= -10x+y=4

Math

The sales tax is $0.065 per dollar where Ray lives. What percent of a dollar is the sales tax?? Please help!!

Math

Please check my answer.. Find a point E on segment CD such that the ratio of segment CE is 5/8 C is placed on (-9) and point D is placed on 7. A. -8 B.-1~~~ C. 1 D. -3

Math

when z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8. Can you please explain this to me step by step? I'm having difficulty understanding why the answer is 4

MATH

Write an equation in point slope form for the line through the given point with the given slope. (-4,6);m=3/4 y-6=3/4 x+4 y-6=3/4 (x-4) y-6=3/4 (x+4)** y+6=3/4 (x+4) Please help

Language Art (Please Check...again)

1)Resilient people usually a)complain when they have bad luck b) bring good luck to others c)are able to deal with others** 2)when the someone refers to pausing to " enjoy the view of the trees and the flowers below," he really is talking about a) looking down at the view from...

Math!

Please help me! I do not under stand any of this! I know i should do it on my own. but please help me!! 1.(6.0 x 10^5) x (3.0 x 10^4) = (1 point) 18 x 10^20 18 x 10^9 1.8 x 10^20 1.8 x 10^10 2. (5 x 10^–2) ÷ (2 x 10^3) = (1 point) 2.5 x 10^-5 2.5 x 10^-1 25 x 10^1 25 x 100^...

Algebra 2

Completing the square method allows you to solve any quadratic equation. For each of the following determine what number completes the square. I cannot find my notes on completing the square, can someone please help with these two problems? 1. x^2+8x 2. y^2+10y i don't know ha...

english

We have to do an oral commentary and analyze an poem that can be related to structuralism. We read a book called the educated imagination, and that book explains the idea of structuralism. Can somebody please suggest an poem that would be good for this assignment? and also, ...

R.E

Please tell me who are the 5 Prophets? I have a bible (christian i think..) crossword and it has a few questions on it at the bottom and one of them is the 5 Prophets. I can give a list of names, but please can you tell me out of the names who the 5 prophets are? Thanks Amos, ...

ENGLISH!!

What should i write about for the topic: responsibility for watching over your little brother....also explain the various ways you kept him safe...etc. and how you felt responsible for that person. Please give me lots of ideas about what to write for that topic (i have to ...

PHYSICS IS THERE ANYONE WHO WUD HELP PLEASE

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees calculate acceleration ...

Algebra/ please help!!!!

Wage $17hr-- Annually/$28,285.28 Apartment Value 17.34hrs/pay period toward apartment $934/month Annually $11,208.00 Total Annually $39,498.28 Working 40 per week/52 weeks per year I can't figure out the breakdown of how they arrived at these numbers. PLEASE HELP

math

A grocery store has a gallon of milk for $2.30. They also have a 4 litter container of milk for $2.30. Which is the better buy and why? Please somebody help me with this question? So far I did Gallon 1 = x liter 3.79 4 4 = 3.79x cross out divide 3.79 3.79 x=1.055 gallon

math....please help!

rachel allows herself 1 hour to reach a sales appt 50 miles away. after she has driven 30 miles, she realizes that she must increase her speed by 15mph in order to get there on time. what was her speed for the first 30 miles?

math help please

if the product of two whole numbers is zero, then one of the factors is zero. To what axiom does this refer? I am unsure of the answer dealing wth axiom but im thinking it would possibly be the non zero divisor?? I don't know if im right

math (graphing)

I need to graph "y = -2x+5" and "y = 4/5x-3"... I don't think it's possible to help graphing on this site.. so can you please tell me any other sites where it would show how to graph those equations? also, I'm having trouble graphing INEQUALITIES. any help on that?? thanks a ...

10th grade Academic Math

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.

10th grade Academic Math

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.

10th grade Academic Math

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.

math 8th please help

a teaher chooses a student at random from a class of 10 boys and 15 girls. Find the odds favor of and for the odds against each event. 1. choosing a girl 2. choosing a boy i don't understand what the odds of something would be

12th grade math

a block of mass 77kg is placed at the top of a frictionless plane that is inclined 46degrees to the horizontal. The height of the plane is 23 meters. find the speed of the block at the bottom of the plane. Show the steps please, -thanks

MATH *IMPORTANT

HOW MANY SETS (A,B,C) OF THREE DIFFERENT,POSITIVE SINGLE DIGIT INTEGERS HAVE THE PROPERTY THAT A SQUARED + B SQUARED + C SQUARED IS A PERFECT SQUARE? please help me with this one a soon as possible its very important and i don't even know where to start!!

math 2

mera painted equal sections of her bedroom wall to make a pattern. she painted 2/7 of the wall white and1/2 of the wall lavender.write an.equivalent fraction.for each using a common denominator. please help answer. thx

math 2

mera painted equal sections of her bedroom wall to make a pattern. she painted 2/7 of the wall white and1/2 of the wall lavender.write an.equivalent fraction.for each using a common denominator. please help answer. thx

Math

Kim is researching the number of channels available from different cable and satellite companies what would be an appropriate graph to use : A. Line plot B. line graph C.bar graph D.frequency table E. pictograph PLEASE HELP!!!!

$$$$math$$$$'

I want to make 99 by using calculator,but the 9 key , the + key,and the - key are broken. How can I use my to do the task. I need to come up with 5 solutions I came up with this 33x3=99 99x1=99. 11 x3x3=99 I need two more solution and my mom is lost too. Please help

math

Mrs. Sue please help! A true-false test has 12 questions. What is the probability of guessing the correct answers to all of the questions? (1 point) 1 over 4096 1 over 144 one over twenty four 1over14

5th grade Math

Please help, what operation should I use to solve this problem? Jessica bought 10.50 pounds of potatoes. The potatoes are sold in sacks of 20 if the potatoes cost $1.99 per pound. How much money did Jessica spend?

Math--Please help!!

Tim Newman took out a simple interest loan of $1500 at a 10 percent interest for 12 months. After 4 payments, the balance is $1100. He pays off the loan when the next payment is due. What is the interest? Is it $9.17

math

3/4 divided by 2/5 So I think then I turn it into. 3/4 x 5/2 then I'm a bit confused after this. Find the common denominators? (Which would be 8) In my lesson it says for 3 and 2 find their common factor. And it's 1. But that won't change anything. Could someone please explain...

12th grade

Okay I am doing a report on Thurgood Marshall. I am to a part where I am writing a little about his presidential nominations. Please help me on this! What exactly is a second court of appeals judge's job? What about a Supreme Court Justice? I am trying to say maybe a sentence ...

social studies

prepare a defence for the proposition that the Divine Right of Kings is necessary to good government. i don't get it. what does this mean? and i don't even understand the Divine Right of Kings, it was written in old english. please help me. and it also says that rewrite this ...

Algebra-please check

Please check these: 1.When the fraction 2/3 is used as exponent, wht role does the denominator 3 play in evaluating expression? I think it indicates cube root of the base,correct? 2.sqrt of (2^4x/4^-2x) is equilvalent to 2^4x, correct? 3.Simplify (2xy^-2z^4/y^-3/z^3)^2 would ...

Physics (Please, it's a minor error)

A rectangular block has dimensions 1.5cm x 3.2cm x 3.9cm and a mass of 61g. Determine the density in SI units My taking on the question, Mass= 0.061kg Volume= 0.1872m Density=0.061kg/0.1872m=0.3258547kgm^-3 Can someone please tell me where I'm going wrong?

PLEASE HELP W/ COMPUTER SCIENCE?? JUST 1 PROBLEM?

Write a complete Main method that prints Hello, world to the screen. I have tried: MsgBox("Hello, World!") Console.WriteLine("Hello, world") MessageBox.Show("Hello, world") Almost every way that seems correct. Please help me.

Science-QUICKLY PLEASE!!

13. Which invention below would not have been possible without the pioneering research of German-American physicist Albert Einstein, American physicist Robert Oppenheimer, and Italian-American physicist Enrico Fermi? a. computer microchip b. nuclear reactor c. television d. ...

English

Please help write a reaction on this Article, I want to give good presentation. How can I make it interesting? Thank you! So, far I think the Author is Energy literate and motivates readers through his words. Please tell me how I can include "Energy conversion, Energy ...

algebra 1

v(v-3)= v^2+6 Does any one know if this is in the quadratic form or not The v^2 means v second power No it is not. Please read: http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut20_quadform.htm

CALCULUS WXMAXIMA !!PLEASE!

y=log(100493/40000*x-1) y=atan(100493/40000*x+1) y=exp(-100493/40000*x+1) Note you will need 2 integrals to represent the area. Approximate the area of the region bounded by the given curves. I can do it with two but kinda struggling over here please helppp!

chem -please help!!!!!!!!!!!!

An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa of the second ...

6th Grade Probability

The probability of winning a game is 25%. How many times should you expect to win if you play 36 times? A. 3 times B. 7 times C. 9 times (I think it's the answer) D. 11 times Please help me! If I'm wrong can someone please explain to me why and the correct steps and answer. ...

geomety please help

the perimeter of a recatngle is 54 inches. The width is one inch less than the lenght. FInd the length and width. I just don't understand how to find the length and width if i am only givent eh perimeter please show work thank you

Physics

A 492g oscillator has a speed of 99.5 cm/s when its displacement is 3.60 cm and 72.5 cm/s when its displacement is 5.10 cm. What is the oscillator's maximum speed? I'm suck with this problem, can someone please go through it with me step by step, please and thanks

High School

Please provide me some links to websites where I can buy and download US High School text books. I am now in a UK based school in Asia but I will be moving to America next year. So please provide useful links.

algebra

Please help....struggling with word problems and please explain how to get the answer.... Max has a collection of 210 coins consisting of nickels, dimes, and quarters. He has twice as many dimes as nickels, and 10 more quarters than dimes. How many coins of each kind does he ...

English

I have to write an essay on "Why is college important to me" and I have to find two references and each reference must use quoted passage. Where can I find references for this topic because it's asking for my opinion please u need help please tell me what references to use

chemistry

1.2 mol HCl and 3.9 mol NaOH react to this equation, HCl + NaOH=NaCl + H20 If the limited reactant id HCl, calculate the amount of NaCl formed in moles. Please help and explain how to solve this so I may understand it better please and thank you.

Account,communication-skill,Economics,Business Law

Make a speech,Your md is 70year. Please state your question clearly. Please also note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a tutor with this specialty online ...

Math amortization payments

What amortization payment would be required every six months at 14% interest to pay off a loan that is $35,000 with in four years. answer needs to be rounded to the nearest cent. please check my answer thanks :) $5,861.37

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