# Math(Please help)

181,141 results, page 80

### TRIGONOMETRY

Can someone please show me step by step how to calculate the modulus and the argument for these complex numbers? I have a trig final next week and I am trying to finish this study guide so I am prepared. Thank you so much! If you can, please show my how you get the answer so I...

### writing please someone help!!!

which traits are strongest in your persuasive essay: ideas, organization, voice, word choice, sentence, fluency, or conversation? provide textual evidence from your essay to support your answer. Please can someone help I'm having trouble figuring this one out!!!!

### Please Help ASAP!! Algebra

A number cube is rolled with these results: 64 ones, 67 twos, 73 threes, 59 fours, 72 fives, and 71 sixes. What is the experimental probability of rolling an even number? Write your answer as a percent, to the nearest tenth of a percent... A. 51.9% B. 48.5% C. 53.6% D. 46.8% ...

### please check my answer

please check my answer thanks :) four chairs at $22.00 each 1 table for $212 and umbrella for $85 What is the total of this bill if the sales tax is 6% $22 x 4 ----- 88 212 + 85 -------- 385 x 0.6 % -------------

### please check my answer

please check my answer thanks :) four chairs at $22.00 each 1 table for $212 and umbrella for $85 What is the total of this bill if the sales tax is 6% $22 x 4 ----- 88 212 + 85 -------- 385 x 0.6 % -------------

### Reading HELP PLEASE!!!!!!!!!!!

Can someone send me like a book report form? Like the way to write a book report? I neeed help please! Oh and thanks Miss Sue for the help!

### social studies

I need to know some resources that are in the countries of the south. Please LIST the resources. DON'T give me any sites. I need help, I tried to find some, but I couldn.t Please help me. THANKS!:):):):):):):):):):):):)

### chem--please help me!!

when a 25.0 mL sample of an unknown acid was titrated with a 0.100 M NaOH solution. Determine Ka for the unknown acid. Volume NaOH = 12.5 mL; pH=3.80 please help me explain in details!!!

### Science (Please help!!)

creating a prototype and troubleshooting are steps in the development of a: a new scientific theory b: a new experiment c: a new scientific law d: a new technology ******* Please help =)

### Statistics

The rate of chlamydia infection was reported as 2.78% in a recent year. Under certain conditions, a preliminary screening test for the chlamydia bacterium is correct 96% of the time. One person is randomly selected from the population. find the true positive. Can someone ...

### unscrambling word

Can you help me unscramble these words please! radmordey conshorier trinabac mecal minglem bobing lukarak its in spanish- srecmoro, and tsmnoamo- help please england antelope is the answer tyler! lafrpty=flytrap lafrpty=flytrap please help me to unscramble this saying! dare to...

### math

What was the percentage increase in motor vehicle production in countries outside the United States from 1950 – 1997? 1950- 10,577 1997- 53,463 I'm trying to figure out the percentages of population increases between different countries at different years. Having problems. I...

### Math - Metric conversion

There are a 100 centimeters in a meter and 1000 meters in 1 kilometer. How many centimeters are in 2 kilometers? Please give step by step details in answer, Thanka

### math

What would be the compounded interest on $8,000 invested for onr year AT 6%, compounded quarterly? Round your answer to the nearest dollar. Please explian how you got your answer thanks

### Math

Please help with this question. Determine an algebraic model for Alvins data and use it to make a reasonable prediction for the population in 2036. I am having trouble with the algebraic model. thanks

### Math

The sides of a triangle form an arithmetic sequence with a common difference of 2. The ratio of the measure of the largest angle to that of the smallest angle is 2:1. Find the area of the triangle. PLEASE HELP!

### math

i just forgot how to find the equation in slope-intercept form for a line. Can anyone please give me some hints to do it with "the line through (3,-2) with slope m=4/5" as an example? Thanks a lot!

### Math (Calculus?)

[x^5(-3)(x^2+1)^-4(2x)]-(x^2+1)^-3(5)x^4] / (x^5)^2 Can someone show my how to simplify this, step by step? So far I got that the denominator should be x^10 because of the exponents, and (x^2+1)^-4 could be simplified as [(x+1)(x-1)]/4, likewise with (x^2+1)^-3, except the ...

### math

i'm studying for a test on rational expressions and i just wanted to know the answers to some of the problems i am not too sure about... 1... 4y-2/8y-2.. i got 1/2 which restriction of 1/2 2...(x-3/3x-5)/3-x/6x-10.. i got 4 with restrictions of 3 and 5/3 3...3a+6/2a^2+7a+6..1/...

### math/urgent

PLEASE tell me how you are supposed to come to the answer to this. and what is the answer: a number x is y more than a number y times x i'm a little confused, and i have to teach this to a student. thanks a lot

### math

2,750um to Mm CF=10^12 2,750um=2,750*10^-12 What does CF stand for. small to big you divide, so why don't I divide by 5 lots of 1000. Can you please give me some examples of conversions like this one. Thanks

### Math

How many 4-character license plates are possible with 2 letters from the alphabet followed by 2 digits, if repetitions are allowed? If repetitions are not allowed? could someone please help me with the formula, I don't understand it yet

### math

the question asks to integrate cos(t)/ (5sin(t)+8)^2 the answer i got was xcos(t)/(5sin(t)+8)^2 this is not right i believe there is something wrong with the x in front of the cos.... please heplp

### math could you please help i don't understand

in a competition 5 figure skaters will skate in a randomely assigned order. why can't you evaluate the product 5*5*5*5*5 to find the number of possible orders in which the skaters can skate

### math

Peform each indicated operation by using LCD and simplify the result. Can you please show me the steps on how you got the answer because I don't understand how to these problems. Thank you. y+2 over y^2+2y+4 + 1 over y-2 z-3 over z^2+z-6 + 2z+1 over z-2

### Math HELP!

I posted a few questions and then went back and posted how I thought they were supposed to be answered. Could someone please locate my earlier questions and tell me if I am on the right track?

### Necessary Math HELp

2x + y = -5 3x +5y = 3 How come I have to multiply by 5 to make the y variables cancel, like what does that mean? I don't get how ur supposed to multiply like where and how? Im really stuck right now, please help:(

### Math/Trig

The average temperature, in °F, for Atlanta, GA is modeled by the sinusoidal function y = 18.25 sin(pi/6 t - 2.09) + 61.15 where t is the time in months and January is t = 1. What is the average temperature for the month of February? How do I do this problem ? Please Help

### Math(Please check)

Find the slope of the graph at y=sqrt 2x^2 +1 at the point (2,3). First I plugged 2 into the equation and got 3. Then the derivative of the equation is 4x and then I multiplied that by 3 and got 12. Is this correct?

### math

1. find the values of s for which each function is continous: f(x) = [ x if x less than or equal to 1] [2x-1 if x greater than 1] 2. determine all values of x at which the function is discontinuous: f(x) = (x^2-2x)/(x^2-3x+2) Could someone please tell me how to do these ...

### math

Please help me? y=log(x+1) a. Write the equation as an exponential equation and solve for x. b. Switch the variables in your answer to part a (Change x to y and vice versa). Write the new expression.

### math

would you please check these for me thank you. +6+-5--4= 5 also Sara only has dimes and nichels in her coin jar,they are ina ratio of 3 to 5.If she has 120 coins in the jar,how many are dimes? 45 correct??

### Math

Find all complex zeros for the following polynomial function. Please show all of your work. f(x) = x^4 - 91x^2 - 900 Hi, I need help... I'm not understanding this complex zero..

### Business Math

Please confirm if I did this correctly: What is the Principal? Principal $21250 X 10% 2,125 What is the total amount paid by the consumer? 2,125 x 3.5 years 7,437.5 +21,250.0 28,687.50

### Math - Graphing a function

Graph the function below. Determine the domain, range, and horizontal asymptote. Please show all of your work. Submit your graph to the Dropbox. f(x) = (3/2)^(4-x)

### Math

Please help me. Is there a short cut way to arrive at this answer? Observe the pattern of letters ACCCEEEEEGGGGGGG... This pattern continues to repeat beginning with the letter A. What will be the 170th letter? Thank you

### Math(Can someone please answer!!)

n [1.70E-2] = ln(0.144) - (k s-1)(3609 s) Solve for k. I have a TI30 calculator. Am I suppose to press just the ln button or do I have to press 2nd and then ln??

### Math need help

y= sqrt(81-x^2) What length and width should the rectangle have so that its area is a maximum? (smaller value) (larger value) I have no clue how to do this, so if someone could please help! thank you

### Math

hi! I need help with this question please help! The question is: Each tire of a bicycle has a diameter of 26 inches. if you start pedaling and the tires make 10 complete rotations, how far has the bicycle traveled? Thanks! :]

### Statistical Math

Starting with the data values 70 and 100, add three data values to the sample so that the mean is 90, the median is 91, and the mode is 91. Please show all of your work.

### math

can u please help me a printig shop charges a 75-cent minimum for the first 8 photocopies of a flyer. additional copies cost 6 cents each. represent the cost of c copies if c is greater than 8. thank u

### math

A material has a half-life of 12 hours. If initially there are 4 grams of the material, how much is present after 8 hours? I know the answer is 8/3, but how would you solve this using calculus? please help.

### math

please help. what is the probability that when you pick two cards, you will select at least one king out of two in a deck of six standard cards? (assuming there are no jokers)

### Math

An equilateral triangle ABC has AB=20√3. P is a point placed in triangle ABC and D,E and F are the foot of the perpendiculars from P to AB, BC and AC, respectively. If PD=9 and PE=10, what is the value of the length of PF? Please work the complete solution.

### Math

An equilateral triangle ABC has AB=20√3. P is a point placed in triangle ABC and D,E and F are the foot of the perpendiculars from P to AB, BC and AC, respectively. If PD=9 and PE=10, what is the value of the length of PF? Please work the complete solution.

### math

Koley makes $4.00 per week for washing dishes. She pays her sister Amy $0.75 each time Amy does the dishes for her. Is that fair? Please explain how I get the answer because I don't understand it/

### math

How do I set up the quadratic equation for this problem? 4.0= (2x)^2 / (1.0-x)(1.0-x) I know how to use the formula, but I have a hard time setting those equation to zero. Please explain step by step. Thank you

### math

Can somebody please help me with this. thank you 89___89 the second 89 has a solid line on top of the number. Is this equal or greater than or equal to 89 without the line No one has answered this question yet.

### math

Find the area of the shaded region. View the graph and image at: postimg.o rg/image/dg4kt89v1/ Please help me explain this one. I know the ans to this one but can not work out.

### ordering numbers( math) please help

if you take five tests and come out with your grades. order these numbers from least to greatest 76% 8/10 90% 17/20 83% then find the average of the five quizzes

### Math

A pizza parlor has 3 diffrebt crusts and 3 diffrent cheeses and 7 diffrent toppings . How many combinations are on a pizza with 3 topings 1 crust and 1 cheese ? Help please I got 42 and then was told I was wrong

### Math! Please check!

Name the intersection of planes ADE and BEA. A- plane BED B- plane ABC C- line BD D- line AE My choice is D. (Sorry that I could not post an image)

### math

A bottle of cordial contains 5litres ,of which 10% I'd pure fruit juice.hoe many liters of water must be added to dilute to 4% fruit juice.can anybody explain please,thanks

### math please help!!!!!

Factor f(x) into linear factors given that k is a zero of f(x). f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored form, f(x) =____ (factor completely. simplify your answer)

### math problem (please help)

What are the dimensions of a rectangular tract of land if its perimeter is 70 kilometers and its area is 300 square kilometers? km (smaller value) akm (larger value)

### Math

Louis paid $42 for a dozen magazines with her annual and subscription to her favorite sport magazine. What is the unit cost for each magazine?(How many magazines did she subscribe to) Please show work.

### math please help

In the diagram below, we have DE = 2EC and AB = DC = 20. Find the length of FG. I have no idea how to do this. I did a problem almost exactly the same and approached it the same way, it did not work.

### Math

Which is NOT true about the Table? x: 1 | 2 | 3 | 4 | y: 1 | 4 | 9 | 16 | A. it shows a linear function B. x increases by 1 each time C. the rate of change is not constant D. y increases by a different value each time D please check

### Math

Given that <1 and <2 are supplementary angles and that m<1=115 , explain how to find the measure of the complement of <2. Instead of giving just the answer can you explain in words of how you got the answer please!

### math

Storm sewers are hollow cylinders with outside radius of 0.9 m and inside radius of 0.7m. If a section of storm sewer is 2.5m long, what volume of concrete is needed to make it? Please help..

### Math

The length of one side of the school building is 100 feet. if you use a scale factor of 1:250, what is the length of your scale drawing? Please help me and explain how you get your answer!

### HElp MaTh PleasE!

A multiple choice test has 5 questions each with 5 possible answers. Find the probability of answering all the questions correctly. A. 1/3,125 B. 1/25 C. 1/625 D. 1/125 How do you do this problem?

### MATH HELP PLEASE Explain

Onondaga Electronics operates on a net-profit rate of 20% on its printer cables. If the markup is $8.95 and the overhead is $4.31, find the net profit and the selling price

### Math

Bill's baseball bag weighs 4 pounds . If he takes out 2 pairs of cleats that weigh 6 ounces each . How much will his bag weigh? Please show the work

### Math

Find the probability of the following event: tossing a coin tails up or rolling a number less than 4 on a number cube. I got 1/2 + 3/6 and got 1. The answer is 3/4. I don't understand what to do. Please help.

### 6th grade math

You roll a number cube 20 times. The number 4 is rolled 8 times. What is the experimental probability of rolling a 4? A. 40% B. 25% C. 20% D. 17% How do I work this problem out? Please explain. Thank you.

### Math

State the theorem or postulate that is related to the measures of the angles in each pair. Then find the angle measures. m∠3=(23x+11)°,m∠4=(14x+21)° Can you teach me this problem?? Please...

### Math help ASAP!

Sydney has $972 to spend on tickets. If each ticket costs $27, how many tickets can she purchase? If there will be any money left over after the purchase, include it as a remainder. A.37 B.36 C.38 D.35 Please help! :<

### Math

Please lead me in the right direction. I am so confused and I have been working on this one problem for an hour. I have the answer, but I want to know how to get to it. The answer is (1,1,0) Solve the system by elimination. -2x+2y+3z=0; -2x-y+z=-3; 2x+3y+3z=5

### Math

Dollars Earned = y Dollars Saved = x Equation : y=4x+100 My problem : For each increase of $200 in earnings, what is the increase in savings? PLEASE ANSWER FAST I HAVE 10MINS

### Math

A rectangle's length and width is a ratio of 17:2. The area is 136 square yards. What is the length and width. I have no idea on how to even attempt to work this problem. Please help!

### Math - Coordinate Geometry

The vertices of a quadrilateral are A(-2,3), B(5,4), C(4, -3) and D(-3, -4). Prove that ABCD is a rhombus. Find the area of ABCD. Formula to find length: d = √(x2 - x1)^2 + (y2-y1)^2 Please show working out, thanks.

### math

Create two different situations: one in which you use combinations and one in which you use permutations please help me with this question or give me some sites too look at, I don't understand.

### Math

I need help please. Laurie left home and ran to the lake at 10 mi/h. she ran back home at 8 mi/h. If the entire trip took 27 minutes, how far did she run in all?

### Math

A dog walker charges $10 to come to your house and then $2 per mile walked. She charged you $16. Which equation could you use to determine how far she walked your dog. Can you please help? Im thinking its 16+10=2m

### Math Trigonometry

Hi guys, I was wondering if you guys can help me with this question. I'm not sure how to do this question. As I keep on getting something that's out of the unit circle. Please help! 17sec2(θ)-13tan(θ)sec(θ)-15=0

### Social Studies

What are some of the coolest facts about Washington D. C.? Please answer my question soon! its not in washington! Please see the answer I posted to your first question. Although it is our capitol, it is not one of the states

### algebra, help please!!!

what is a function and how do u tell the difference between one and something else? in my hw, there's these 3 graphs, all have a column for inputs and outputs and we have to point out which one or two represents a function...please help me! thank u so much!

### science

Please check my work 3M solution of NaOH (1 liter worth) molecular weight: 39.99 3 x 39.99= 119.97 grams dilute to 1000mL 3 M solution of HCl (1 L) c1v1=c2v2 (12M)(?)= (3M)(1000mL) ?= 250 mL please check thank you

### writing

i have an essay exam tomorrow, please can someone help me get some ideas about symbolic violence and how it effects men. I need it as soon as possible; because i have no idea about anything. Please someone help me!!!

### English

I have an essay exam tomorrow, please can someone help me get some ideas about symbolic violence and how it effects men. I need it as soon as possible; because i have no idea about anything. Please someone help me!!!

### help ms.sue

whats one opinion about leukemia.i all ready wrote a fact but i baerly know anything about it so i can not write a opinion please.this is just home work ? please help me ms.sue from, priscilla perez

### Literature- Frankenstein

Consider the protagonist in "Frankenstein". Explain how Victor Frankenstein character changes over the course of the novel, Frankenstein. Please include examples of these changes in the response. I have to write no fewer than three paragraphs, so please help. Thanks!

### physics please help

What is the resistance of 125 m of aluminum wire that has a diameter of 0.8118 mm? The resistivity of aluminum is 2.824 x 10^-8 (omega) m. I need help with the set up. we've been using R = V/I, but haven't had anything with resistivity. I don't know where to place this, ...

### Social studies

I really need help on this, please! I've been reading my book for an hour and found no answer. Ok so here it is: Sumer lacked resources such as ... I have to list three resources that Sumer lacked. Please help. Thanks !

### ALG@ NEED HELP PLEASE

Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. I am totally lost still I read and read and the concept is lost in my head. Can someone please help me? I know there is more than one way to Factor this.

### mat/116

Will someone please help me slove this problem? Use the elimination method to solve the system of equations. 5u+2v=-18 3u+v=-5 I have tried to solve this problem several times and have not gotten the correct answer please help. Thank you.

### Calculous

g(x) = x^4-8x^3-16x^2+128x the graph goes through the x through (-4,0) , (0,0) (4,0), (8,0) horizontal axis has a scale of 2,4,6,8,10 (each tick increases by 2) Y-axis value that is the highest is (-4,30) and (8,30) Assume g(x) = k(x-p)(x-q)(x-r)(x-s) p<q<r<s I need ...

### Trig please

The height h in inches of pistons 1 and 2 in an automobile engine can be modeled by h1 = 3.75sin(733t) + 7.5 and h2 = 3.75sin[733(t+ 4π/3)] + 7.5 where t is measured in seconds. How often are these two pistons at the same height? Show work please.

### Math! Please Check My Awnser!

Hello! I need some help with math! I have tried to do this but I am unsure about my answers. My I will identify my answers with a "<--". Also, if I have missed one, please tell me the right answer! Also, Thanks for your help in advance! Have a nice day! 1. Which of the ...

### math

i am in the 6th and learning but stuck on this big one. NANCY IS GOING ON A TRIP THAT COST 4800.00 PLUS 216. FOR TAX SHE IS DEPOSITING 1200. SHE WILL PAY IT OFF IN 24MONTHS WHAT ARE HER PAYMENTS? i KNOW THE ANSWER BUT DO NOT KNOW HOW TO WRITE IT AS AN EQUATION, pLEASE SHOW ME.

### Survey of Math 140

on march 8, you sign a $4000 note with simple interest 10% for 240 days. You make partial payments of $1300 on May 26 and $2300 on july 31. How much will you owe on the date of maturity (November 3)? Please show work!!!

### math

the distance of fencing reqired for 75 acres but fist changing it to meters squared i think that it is 304 969 m sq but i still don't know how much fence wire i need foe the circunferance please ckeck my work and give me the correct answer

### Math 222

I am having difficulties trying to do rational expressions. I have to use the words Domain, Excluded Value, Set, Factor, and Real Numbers to show how I got the answer. Can someone please help me solve this one? g^2-6g-55 ___________ g

### math help please

19. Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with Mr. Green. Use ...

### math

Oregon is about 400 miles from west to east, and 300 miles from north to south. If a map of Oregon is 15 inches tall (from north to south), about how wide is the map? PLEASE HELP AND EXPLAIN IT Set up a proportion: 15/300 (the ratio of inches to miles, north to south) and x/...

### business

Out of the types of businesses (sole proprietorship, partnership, and corporation), which has the easiest time obtaining money to expand their business. Why? Please note that we don't do students' homework for them. Once you have come up with a response to these questions, ...

### Maths-Vectors Help!

Please help confirm if I got this problem correctly; 1)2jx(3i-4k) sol>> 2x3jxi - 2x4jxk = 6jxi - 8jxk = 6k - 8i 2) (i-2j)xk Solutn>> ixk - 2jxk = -j - 2i 3) (2i-4k)x(ix2j) solutn>>2ixi Please do help with this ONE yes, correct. On the third, break recheck if ...

### AP Calculus - High School

The Temperature T of food put in a freezer is T = (700) / t^2+4t+10 where t is the time in hours. Find the rate of change of T with respect to t at each of the following times. a. t=1 b. t=3 c. t=5 d. t=10 ** i'll be able to do the others on my own if you please explain step ...