math..solve for u again

156,930 results, page 80

MATH

i am thinking of a number. if you multiply it by 7, then add 15, and finally subtract 3^2 you get 48. write and solve an equation that describes the number (x) that i am thinking of. how do i find it? what is x?

Math

a store earned $797.30 for the sale of candid apples at $2.28 each. write & solve an equation that represents how many candid apples were sold? Thanks!!

Math

Use elimination to solve each system of equations. x+y-2z=10 8x-9y-z=5 3x+4y+2z=-10 I need to figure out what x,y, and z each equal. I must use the elimination method.

math

1)Can z+6/z+1 be reduced any further? 2)Add and simplify v/v^2+8v+16 + 4/v^2+7v+12 3)For this second binomial do you change the the sign of the second term? Subtract and simplify 1-y/y-2 - 9y-8/2-y 4)Solve 4/5+1/2=1/x 5)8/x=9/x-1/2 Thanks!

Calculus

If anyone can please help me solve this math problem! PLEASE!! Here is the link: img63.imageshack.us/img63/9355/img0002gp.jpg

math

the width of a rectangle is 6 cm less than the length. the perimeter is 72cm. write and solve an equation to find the width and length of a rectangel.

Math

A sequence of numbers is defined by the expression a(subscript n) = 3n + n^2 Which sequence corresponds to this expression? A)4, 9, 12, 20 B)4, 10, 18, 28 C)4, 10, 15, 20 D)5, 10 ,15 20 Question: What am I supposed to do here? How would I solve this?

math(algebra 1)

how do u answer this? please step by step *graph and check to solve the linear system y=-x+3 y=x+1 Thank you very very much!!! :)

Math--Proportions

Solve for x: 2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the part after you FOIL, and then I get stuck

math

a factory produces 6 motorcycles in 9 hours write a proportion and solve it to find how many hours it takes to produce 16 motorcycles. help me please!

math

Okay so i here is the problem......find the unit rate. I don't remember how to solve for the unit rate. Help me please i have a quiz tomorrow.

Math

How do you solve this equation; There are 128 7th graders at Mark's school, if there are 16 more girls than boys, how many 7th grade boys are there?

Math

Write and solve an equation for the situation. Eight and one-half years ago, Steven was 7 years old. How old is he now?

math

solve the equation log lower 6(x+9)-log lower 36 x =1 the 6 and 36 should be dropped down, then (x+9) and the x are higher. Please show work

math

A factory produces bicycles 6 motorcycles in 9 hours. Write a proportion and solve it to find how many hours it takes to produce 16 motorcycles

math

Please help me solve this question. Find the value of the annuity. a=1000 I=0.06,n=25? what is the future value of annuity? (round to the nearest cent.)

math

The equation: T= 2* pi* sqrt(2/3L/9.8) Solve for L. Please show the solution step by step. The square root is giving me trouble in my solution. Thanks for your help.

Math Help!

Write a percent equation that can be used to solve the following problem:820 is 20% of what number? A. n=0.2x 820 B. 820=0.2x n C. 0.2= nx 820 D. none of these Is the answer A?

Math

Tanya is 62 inches tall. She is 17 inches taller than May. Write an equation that can be used to find May's height. Please solve the equation.

Math help Steve?

1) Given that p(-3), p(-1), and p(5)=0, which expression could be p(x)? A)x^3-x^2-17x-15 B)x^3+x^2-17x+15 C)x^3-3x^2-13x+15 D)x^3-9x^2+23x-15 Hi Steve, I got what you said, but how would I solve this equation then?

math plz help ;-;

Solve the following equation: -2(x-3)+4=8x-20 please help me how to do this step by step plz i do understand how to do this, sorry ;-; And thank you for the ones the helped me with the other Q :D

math

the sum of three consecutive numbers is eighteen. Write an expression describing the equation and solve the state of the three numbers

math

the sum of three consecutive numbers is eighteen. Write an expression describing the equation and solve the state of the three numbers

Algrebra, Graphs, Math

How do I sketch my graph of X+Y=3? Please help! I don't understand. Do I need to solve this like the rest of my previous graphs if so, then how? Please Help!

math

Naya has a number riddle for you to solve: The number has two digits, it is less than 40, you say it when you count by fives and the sum of the digits is 25.

Math

Tim said that to solve the equation x-2=9, he would have to subtract 2 from both sides of the equation. Is Tim correct? Explain.

Math-- PLEASE CHECK

234 - 145 3/4 233 4/4 -145 3/4 ___________ 88 1/4 or am I wrong? How do I solve this if I am wrong? Thank you!! you're correct

math ,correction

Solve each of the following equations for x. Problem#3 (5)/(x+6) + (2)/(x^2+7x+6) = (3)/(x+1) My answer is: x = 5 Problem #4 (2)/(5)= (x-2)/(20) My answer is: 10=x whoa. good luck. =0

Math 116 algebra please check

Solve the following system of equations x + 6y =4(1) x = 9-6y (2) What is the solution of the system N There is no solution

Math

Solve. |3w-1| = |3w| or abs(3w-1) - abs(3w) I know you can use a calculator and find the answer easily, but we're supposed to know how to do this without a calculator.

math

A bookcase has 43 books. there are 34 students in the class. Are there enough books for the students? how do you know? use place value to solve

Math

Which linear technique would be best to solve this problem? 3x/4 + 6 = -12 And which quadratic equation would be best for -4x^2=0 Thanks for any suggestions.

Math-LOGS

Express x in terms of a,b and c. log x = 1/2 (log a + log b - log c) Please solve and explain how to do this type of problem, thank you!

math

is each ordered pair a solution of the given system? write yes or no. 1. y=6x+12 2x-y=4 (-4, -12) 2. Y= -3x x=4y+1/2 (-1/2,3/2) 3.x+2y=2 2x+5y=2 (6,-2) 4. Solve the system by graphing. Check your solution. x + y=3 x - y=-1

Math

How do I solve this simultaneous equation 3x-2y=5 (1) 2y-5x=9 (2) I managed to find the value of x and that is -7 but I am having problems to substitute it's value in equation (1)

math/multiplying decimals

I know how to multiply ,but i have to use it in a model. 0.2 x 0.7 the answer is 1.4 show my how to use a model to solve.

Math

How to solve this (2x+5)/(x+1) > (x+1)/(x-1) and graph? I tried this and got (x+3)(x-2) and got -3<x>2 which isn't right the right answer is x<-3 or -1<x<1 or x>2 How would I get this? I asked this before.

math 050

Apples cost $4 for 5lbs. How much will 40 lbs.of apples cost? (Set up a proportion and solve it)

math (surface area)

i know the formula of a rectangles surface area is SA= 2(lw)+(wh)+(lh), but when the dimensions are : 2a for the height, a for the width, and 3a for the length, how do i solve?

Math

Solve two solutions. If there is a solution write it or I there isn't any write no solution. -3ly-3l = 9 (l l is absolute value sign)

Math

Pls help .[1] Solve the eguation 4*=28. [2] change 1/20 to decimal [3] change 60% to a common fraction . Pls i need the solving thank you

Math 8R - Help!!!!!!!!!!!!!!!!!!!

14. Subtract -5 from -14 -14 - (-5) 16. Subtract -6 from 18 18 - (-6) 18. From 14 subtract -2 22. Subtract 17 from 8 I already know how to solve this just have trouble formatting it. How do I do it for number 18 and 22???? Please help

math/calculus

solve the equation loga(x-5)- loga (x+9)=loga(x-7)-loga(x+9) all a's are lower please show work

math check my answers

1. 2(x+3)squared-6x+5=0 Answer= 2xsquared+6x+23=0 2. 3xsquared-6x+5=-2(x+1)-10 Answer= 3xsquared-4x+17=0 How would I solve from this point?

math

solve and check your answer. Please check this for me to see if I have the right answer. __2__ = __3__ 1-x 1+x x= 1/5

college math

system of equations: solve the following system of operations using matrices (row operations) {5x + y + z + w = -5} {x - 2y + 2z -3w = -4}

Math help please

1. The ordered pairs (1, 1), (2, 8), (3, 27), (4, 64), and (5,125) represent a function. What is a rule that represents this function? Y = x Y = 4x Y = x^2 Y = x^3 I don't know how to solve this please help!

Math

If you can buy three raffle tickets for $5, how many tickets can you buy for $55? I need to know to different ways to solve this problem...

Math HELP!! Who can solve??

I'm totally confused on these? Which is D = 2zv solved for v? A. v= 2z / D B. V= d / 2z c. V = D - 2z D. V=D / Z Which is Q = 200P/L solved for P? A. P= QL/200 B. P=200L/Q C. P=200QL D. P=200/QL

Math 2

John solved 1/5 divided by 10 by using a related multiplication expression. Which multiplication expression did she solve? Choices are A. 5 *10 B. 1/5 *10. C. 5* 1/10 d. 1/5 *1/10

math

(please solve step by step) solving equation (6x+2)/4 + (2x²-1)/(2x²+2) = (10x-1)/4x we got roots as

Math

How do you solve the following question? **QRST is a rectangle. If m<QTR = 2x to the power of 2 - 7 and m<SRT = x to the power of 2 + 18, find m<QTR.

Math

solve the proportion using cross products. 20 miles/60 hours=16 miles/h hours? a.20 b.40 c.48 d.64 ??? thanks in advance:) please help!!!

Math (check plz)

y = 2x + 4 2x - y = 6 Solve the system of equations using substitution. A) (2,8) B) (2,-8) C) (10,24) D) no solution <-- 4x + 3y = 6 -4x + 2y = 14 olve the system of equations. A) x = 1/2, y = 3 B) x = 3, y = 1/2 <-- or D? C) x = 4, y = -3/2 D) x = -3/2, y = 4

Math "Need Help Asap"!

7.)Which proportion can be used to solve the following percent problem? What is 50% of 70% A.)X/70 = 50/100 B.)X/50 = 70/100*** C.)50/70 = X/100 D.)70/X = 50/100 B?

maths(urgent)thanks.

a parabola with turning point at (1,-2) and passing through the origin.find the equation of this parabola. how do i do this? can someone please show me how to solve it step by step?thanks! You know that at x = 0 the function is zero. Because the turning point is at x = 1 must ...

SCIENCE

Please don't do that again or you will be banned from this forum.Your question is pretty vague. What observation table are you using? There are thousands of different types of data tables. Is it in Microsoft Excel? Give more details. Try reposting your question with more exact...

calculus again

Suppose lim x->0 {g(x)-g(0)} / x = 1. It follows necesarily that a. g is not defined at x=0 b. the limit of g(x) as x approaches equals 1 c.g is not continuous at x=0 d.g'(0) = 1 The answer is d, can someone please explain how? Thanks. lim x->0 {g(x)-g(0)} / x = 1. You ...

chemistry

having trouble posting but will try again. translate the following verbal description into scientific notation. magnesium ribbon is burned in pure oxygen gas. thanks The reaction forms magnesium oxide (MgO). Se if you can write the balanced reaction.

astronomy

Earths temperature averaged over the year is about 300 Kelvin. At what wavelength does it radiate most strongly? What part of the electromagnetic spectrum does this wavelength lie in? Can you see it? ( you answered my question but it doesnt go under 3000K on the chart. can you...

More Music

Okay, so I'm getting the hang of this. Anyway, the first "Theme" of Mozart's 21st Piano Concerto is plain to me. But where does the second begin? And what is it? Again, I have to write a paper on this, and besides a VERY basic, rudimentary comprehension, I have no technical ...

Physics

Rocket-powered sleds are been used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 424 m/s in 2.35 s and can be brought to a stop again in 2.16 s. Find the acceleration of the sled while accelerating. Answer in units of m/s2

physics

Rocket-powered sleds are been used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 533 m/s in 2.45 s and can be brought to a stop again in 2.37 s. Find the acceleration of the sled while accelerating. Answer in units of m/s2

Science Struggle

Rocket-powered sleds are been used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 533 m/s in 2.45 s and can be brought to a stop again in 2.37 s. Find the acceleration of the sled when braking. Answer in units of m/s^2

vocab

When he had travelled a few yards further he glanced at the card "indifferently". Surprised, he turned it over and looked again with interets. ("The Green Door") Whenever you glance "indifferently" you show that you are not .. a. clumsy b. cautious c. casual d. intrigued ...

Affine ciphers, modular inverse

So using the inverse of 17 modulo 26 I have -3(y-4)(mod 26) first am I correct? (I originally started with -3(y+22)(mod 26)) And im now trying to decipher a simple message. Which I will plug the numbers of the letters into the equation instead of y. Again am I doing this ...

math check again please

I have a slope of -3/4 and the y-intercept at 8 the equation looks like: y= -3/4x + 8 can someone tell me if i'm correct when i'm graphing it. the two points that cross in the x axis and y are (0,8) and (10.5,0) am i correct? correct on the formula. correct on the intercepts. ...

Math: Mean, Median, Mode, Range & Finding the devi

What is deviation? And what is the definition of frequency distribution & how would I solve a problem in 8th grade math with this problem...My child is asking about this problem she has in an 8th grade book. Given the following numbers 2,2,3,6,1,9,4,2,5,7,6,8,6, What is the ...

Physics

At what rate must a cylindrical spaceship rotate if occupants ar to experience simulated gravity of 1/2g? Assume the spaceship's diameter is 32 m, and give your answer as the time needed for one revolution. The centripetal acceleration is R w^2, where R is the radius from the ...

Precalculus

"Sketch the ellipse. Find the coordinates of its vertices and foci. 34. x^2 + 25y^2 - 6x - 100y + 84 = 0 (Hint: Complete the squares in x and y. Begin by writing the equation in this form: (x^2 - 6x + ___) + 25(y^2 - 4y + ___) = -84.)" ==> I used the hint that came with the...

to annonymus can you help me with math

How do i solve inequalitites with three variables. I still can't figure it outplease help. x+y=1 y-z=-3 2x+3y+z=1 the answers are 3,-2,1 how do get there by solving linear equations with three variables. 5x-2y-z=2 -y+2z=11 x+y+z=-3

Math/Calculus

How would I solve the following integral with the substitution rule? Integral of: [(x^3)*(1-x^4)^5]dx Put 1-x^4 = y Then -4x^3 dx = dy Integral is then becomes: Integral of -1/4 y^5 dy ok, thanks a lot! I got it now.

Math

I'm trying to enter this so it shows up to what I need, but I need to know how to solve for the missing Letters: ABCD X 4 ---- DCBA It reads ABCD times 4 and the 4 is under the D.

Math - Inverse Functions

Find the inverses of the following functions. y = 3(x - 1)^2, x >= 1 Work: x = 3(y - 1)^2 x = 3(y - 1)(y - 1) x = 3(y^2 - y - y + 1) x = 3y^2 - 6y + 3 And now what do I do!? Please explain and show me how to solve this inverse function! ... Thank you

math

{y-2}/(a^2-5a+6)=(a+1)/(a-3)-(a+2)/(a-2) How can I solve for y in terms of the other variables??? I tried many times, but I just get y=6,can't express y in terms of variables. Can anyone please correct me or teach me?THANKS A LOT!

Math - Quadratics

Hey, I have some questions. How would I find the domain and range for these equations: y = -5x^2 + 1 y = 3x^2 + 3 x = -x^2 + 5 Also, how would I solve these equations: (2x + 2)^2 = 1 7x = 3x^2 - 1 Thanks for the help!

6th grade math

Explain how you know whether to add a number to or subtract a number from both sides of an equation in order to solve the equation.

Math

Solve by the elimination method. 5r-3s=2 3r 5s =42 r=-40 is this right. 4x+5y=7 5x-4y=5 Decide whteher the pair of line is parallel, perpindular, or n I said is was parallel. Tell me if this right.

Math

use substitution method for solving x+y=4 (x+2)^2+(y-3)^2=5 I got the first part to solve it x +y =4 y=4-x the second part i got to (x+2)^2 + ((4-x)-3)^2=5 x^2 + 2x + 2 ((4-x)-3)^2 = 5 and that is all i could get that i knew was right but i don't know how to get

Math

Use place value to solve. There are 75 children in the concert. there are 8 boxes of song books. there are 10 books in each box.Is there a book for each child in the concert? How do you know?

math

The sales tax on an item costing $236 is $28.20. What is the sales tax rate to nearest tenth? Write ratio equation and solve it!

math 61

write an equation and solve A rectanglar swimming pool has width of 25 feet and an area of 1250 square feet. What is the pool's length?

Math

use the sum and difference identities to find the cosine angle cos pi/9 cos pi/3 - sin pi/9 sin pi/3 I do not know how to solve this because pi/9 is not on the unit circle.

Math

Could someone please help me with this problem? I need to solve -5/2x greater than or equal to -7/4. Here is the answer that I got but I 'm sure that it is not correct. x greater than or equal to 35/8. Thanks.

Math 3

How would I solve? Use each of the digits 3,7,1,5 once to write a number that rounds to the number given. 1. 2,000 2. 3,500 3. 6,000 4. 7,320

Pure math

1.Using your calculator,solve 4 ø in each of de 4lowing equations correct 2 1 decimal place,and with de restriction that 0 degree lessthanequals ø lessthanequals 90 degree

Pure math

1.Using your calculator,solve 4 ø in each of de 4lowing equations correct 2 1 decimal place,and with de restriction that 0 degree lessthanequals ø lessthanequals 90 degree

Math (URGENT)

solve for x, 0 ¡Ü x < 360 tan2x+1=0 My answers: 22.5, 157.5, 202.5, 337.5 Textbook: 67.5, 157.5, 247.5, 337.5 I don't understand. Am I wrong? Thanks for your help.

math

Use factoring by grouping to solve the following equation. 4x3 + 8x2 − 9x − 18 = 0 x = 1 (smallest value) x = 2 x = 3 (largest value)

Math

Lee has 35 dimes and quarters that total $5.00. Solve the system of equations to find how many dimes and how many quarters he has. d+q=35 0.1d+0.25q=5 Please show your work thanks

Math

ln [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

a recipe that will make 3 pie call for 7 cups of flour. write a proportion and solve it to find how many pies can be made with 28 cups of flour

math

Describe the use of the 10X10 grid to solve the following problem.Your telephone bill was $80 after a %25 increase. What was your bill before the increase?

Math

Write and solve an equation for the situation. Eight and one-half years ago, Steven was 7 years old. How old is he now? Explain.

Business Math

Using the simplex method, solve the following linear programming problem: Maximize: P= 5x+2y Subject to: 4x+3y < or equal to 30 2x-3y < or equal to 6 x > or equal to 0, y > or equal to 0.

math

1)find the sum of the odd integers from 25 to 75 2)find the sum of the first 20 terms in the series 10+5+2.5+1.25... . please show the steps to solve the problem^_^

Math please check

Find the equation of the line that contains the point (3, 2) and is parallel to the line 3x − 9y = 0. I know I solve for y and I get y= -3x/-9 but I am not sure where to go from here please help.

Math

"Half the measure of the angle is 25 more than one third the measure of the complement. Find the angle" I don't understand how to set up and solve this at all.

Math

Please help me solve this one. I am looking for 4 digit answers for PLAE and MMSS MAKE+SEAK=PLAE ELKS+ESSK=MMSS

Math

A drug in the bloodstream has a concentration of c(t) =at/t^2 +b A= 3, b=1 Determine how long it takes for the drug to drop below 0.2 solve algaebraically Find algaebraically when c(t) less then 0.5

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