math..solve for u again

156,818 results, page 83

math

The equation of a line is X+Y=1 and the equation of the function is y= 2/x +k. Solve for k and find the points on the tangent line

math

Solve the trigonometric equation 3sinθ=1.2 for 0≤θ≤4π

Math

Write a word problem using 9 and 10 as factors. Write an equation to solve the problem

math

(For this, i know the equation for constant of variation is y=kx, but i just forgot how to solve it)For the eqaution -4y=8x, what is the constant of variation? A. -4 B. -2 C. 1 D. 2

MATH HELP

Solve the following system of equations: x − 2y = 6 2x − 4y = 10 Infinitely many solutions No solutions (0, 0) (6, 10) is it A

Math

Solve the system using substitution. 6x + y = 12 4x + 6y = −8 A. (2 1/2,3) B. (−2 1/2,−3) C. (2 1/2,−3) D. no solution I GOT B!

Math (Help) thx!

Solve the system using elimination. 2x − 5y = −5 x + y = 8 A. (−2, 10) B. (5, 3) C. (11, −3) D. no solution

math

solve 2cos^2x-5cosx+2=0 for principal values of x I don't understand this question...what are principal values?

math help pls pls

How do you solve the formula for the perimeter of a rectangle with width W and L length for the length p=2w+2L

math

Solve for: 1+cosx/sinx + sinx/1+cosx = 1 My teacher said no solution, but I don't know how he got that.

Country Reports

Sorry, I have another question about Iceland's government. :) It wants to know What is (are) thename of the house(s) of government in your country? -and- What are the names for representative to the national government? (senator, assembly member, ect.) Once again, I can't use ...

Language Arts (unfortunately, once again)

I hate to ask a similar question twice, but I am unable to describe the relationship between slain : snail :: flair : frail. I know the first three of five letters are switched, so would my relationship phrase be "switched" or "is switched to?"

Physics

An electron is accelerated from rest through a potential difference that has a magnitude of 2.70 × 107 V. The mass of the electron is 9.11 × 10-31 kg, and the negative charge of the electron has a magnitude of 1.60 × 10-19 C. (a) What is the relativistic kinetic energy (in ...

maths

write the equation in slope-intercept form. then graph the equation. 1. 6x-4y=3 2. 2y+5x=10 can you please help me with at least one of them? thanks! also, where it says 'then graph the equation', I know we can't graph here, so you can ignore that. but if you know any other ...

Physics again sorry

A solenoid of 200 loops of wire that cover a length of 0.1 m. The solenoid carries a current of 4.0 A. What is the strength of the magnetic field inside the solenoid? In this instance do I assume that this time r is 200 x 0.1? Or is it still just 0.1 and I ignore the 200?

Science

[I choose b.] Where are some of the unique ecosystems of the U.S? a.in Pacific Northwest and California b.in the Flordia Everglades and Hawaii c.both (a) and (b) d.none of the above The U.S. has many unique ecosystems. Please think through the question again and post a ...

English

How do you know if your sentence is a run on example... 1 I went home and ate and ate. 2. Before lunch I played volleyball; after lunch, I played again. 3. I thought about what he'd said soon I realized he was right. 4. You and I and the whole team will go. I picked #2

physic

HI!can anyone help me please, just on part b.Thank you so much. A spherical steel ball bearing has a diameter of 2.540 cm at 23°C. (a) What is the diameter when its temperature is raised to 94°C? ___ cm (b) What temperature change is required to increase its volume by 0.9%? ...

Physics

two identical brass balls mounted on wooden posts initially have different amounts of charge, one plus 3 uC and the other plus 15 uC. The balls are allowed to touch and then separate again. What is the final charge on each ball?

maths pls help

1. Solve the following simultaneous equations: log2 xy = 7 log2 (x^2/y) = 5 2. If log y x =a and log z x=b where x is not equal to 1, express the following in terms of a and b: logy (yz) Solve the following simultaneous equations: y = 2 log3 x y+1 = log3 9x Thanks! I tried to ...

Algebra

I'm not sure how to solve these problems. Simplify (3xsquare - 2x)divided by 15x - 10 Subtract (2y/x-y) - 5x/4y Solve (27/x) = (8 - 5/x) Simplify (7m^7n^4/8m) divided by (9m^2n^9/5n^2) 1) 3x^2 - 2x/ 15x - 10 factorize both the numerator and denominator x(3x-2)/ 5(3x-2) = x/5 (...

DrBOB222 pertaining to the MATH question

i got p to be 11 but i do not know how to solve the equation 6x^3 - 11x^2 - 14x + 24=0 Now, you know one root is x=2, so that is a factor. Divide x-2 into the polynomial. That will give you a binomial, which will give the other two factors.

math

how do I solve this problem 2x/2=(6-3y)/2? 2x/2=(6-3y)/2? I solved it for you in my initial answer. The 2 in the numerator cancels with the 2 in the denominator on th left side and x = (6-3y)/2 which is the solution of the initial equation you had for x in terms of y. You CAN ...

math , help

can someone show me how to solve this: directions: pivot once as indicated in each simplex tableau. Read the solution from the result. the number that is highlighted is row 2 column 3 which is the 5 the matrix is a 4 X 8 under column one it reads as: x1/x2/x3/s1/s2/s3/z 4/2/3/...

math

an investment of $10,000.00 in the Emerging Country Debt fund in 2001 was worth 24,780 in 2006 money mag used the formual r=(s/p)^1/n -1 to find the 5 year average annual return. What is the return. How do I solve this

Math

Use the given information to solve the triangle. If two solutions exists, find both. A=110 degrees a=125 b=100 a is greater than b so I think that there is only one triangle. I am not sure where to go from here.

Math

Use the given information to solve the triangle. If two solutions exists, find both. A=110 degrees a=125 b=100 a is greater than b so I think that there is only one triangle. I am not sure where to go from here.

Math

Use the given information to solve the triangle. If two solutions exists, find both. A=110 degrees a=125 b=100 a is greater than b so I think that there is only one triangle. I am not sure where to go from here.

Math Correction

Explain how you can tell(without graphing) that the function has no x intercept and no asymptotes. What is the end behaviour? r(x)= x^6+10 / x^4+8x^2+15 How would I solve this? I know it has something to do with factoring but im not sure what else to do. this is what i have so...

Math

How would you work, and solve this problem? Christa is a waitress and collects her tips at the table. At the end of the shift she has 68 bills, all ones and fives. If the total value of her tips is 172, how many of each bill does she have?

math

Write then solve the inequality. 1. nine more than half the number n is no more than -8. Find n. 2. Judith drove h hours at a rate of 55 mi/hr. She did not reach her goal of driving 385 miles for a day. How long did she drive?

math

solve the polynomial inequality and graph the solution set on a real number line. set in interval notation. x^3+2x^2-4x-8>0 I have been staring at this problem for the last 15 minutes because I just don't understand it, somebody please help me?

Math

A student states that for any positive integer n the sum of n successive integers is always divisible by n. Which of the following can be used to disprove the student's statements? A) 1+2=3 B) 1+2+3=2x3 C) 1+2+3+4+5=3x5 D) p+(p+1)+(p+2)=3(p+1) E)(p+1)+(p+2)+(p+3)+(p+4)+(p+5)=5...

math

Gabe went to the amusement park with $40 to spend. His ticket cost $26.50. Write and solve an inequality to show how much he might spend on souvenirs and snack. Please tell me how you got this answer to this question.

Math/Algebra

A painter earns $15 per hour. what is the minimum number of hours he must work to earn at least $200 write an inequality to represent this situation and solve show your work Im not sure =-=

Math (Mrs. Sue, please help?)

A system of equations is given below: y = 3x + 4 2x + 3y = 10 Which of the following steps could be used to solve by substitution? (4 points) 3x + 4 = 2x + 3y 2x + 3(3x + 4) = 10 2(3x + 4) + 3y = 10 3(y = 3x + 4) (I don't understand this at all and I've read through the module...

Math

I don't get this on if someone can explain it to me Estimate 121% of 600 1.21 times 600 would be the exact figure ok I get 726 I forgot to put the choices here they are.. A) 75 B) 750 C) 72 D) 720 and what i got is not in those choices so what am I doing wrong you were ...

math

Consider the graph of f(x) as shown. Graph of f of x. The curve approaches infinity as x approaches negative infinity, then passes through the point (-3.45, 0), turns at about (-3.05, -2.03), passes through (-2.51, 0), then turns again at (-1.39, 4.62), passes through and ...

math

A bag contains red, blue, and orange marbles. If the probability of randomly selecting a red marble is 0.4 and the probability of selecting a red or blue marble is 0.9 what is the probability of selecting a red or orange marble? In my opinion, the easiest way to solve these ...

Math - More Precision and Significant Digits

Please help me with the following problems: 3. Choose the more precise measurement. 6 cm or 2.5 cm I think it is 2.5 cm. Is this correct? 7. Choose the less precise measurement and explain why it is less precise. 2.8 mm or 3.79 mm I think the answer is 3.79 mm. Is this correct...

Algebra 2(check pt 4)

1)Cramer's Rule is used to solve the system of equations:3m-5n=12,4m+7n=-5 Which determinant represents the numerator for n? answer=[12 -5] [-5 7] 2)Cramer's Rule is used to solve the system of equations:3x-y+2z=17,4x+2y-3z=10,and 2x+5y-9z=-6 Which determinant represents the ...

science

Identify the test (independent) variable, the outcome (dependent) variable, at least 3 controlled variables, and the error Joe made in the following experiment: Joe Student rolled a toy car down a ramp and measured how far it traveled along the floor. He recorded the distance ...

Algebra

Person A can paint the neighbor's house 2 times as fast as Person B. The year A and B worked together, it took them 5 days. How long would it take each to paint the house? So, i know how to setup the problem, but i'm not sure what steps I need to take to solve. This is what I ...

chemistry

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 3.4-L bulb, then filled it with the gas at 1.40atm and 25.0 ∘C and weighed it again. The difference in mass was 5.5g . Identify the gas.

chemistry

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 2.8-L bulb, then filled it with the gas at 1.20atm and 22.0 ∘C and weighed it again. The difference in mass was 3.9g . Identify the gas.

Chemistry

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 2.7-L bulb, then filled it with the gas at 1.30atm and 30.0 ∘C and weighed it again. The difference in mass was 3.9g . Identify the gas.

physics

thanks again to anyone who can possibly help!!!!! i wish i had a book or notes or something about this kind of stuff :( The linear expansion coefficient of glass is 9 x 10^-6 (`C)^-1. An automobile windshield has dimensions of 59 cm by 390 cm. What minimum spacing around the ...

chemestry

Based upon the previous two questions, consider the magnesium nitride addition reaction again. This time, suppose you start with 10.0 g of each reactant. What is the maximum number of MOLES of Mg3N2 that could be produced in this case? Remember that the reactant that runs out ...

Hamlet

What are some motifs in Act IV? All that spark-notes talks about is incest, hearing, and misogyny. None of those are in Act IV, at least not when I read through it AGAIN. Please I just need someone to tell me one main motif and I will look for it myself in the Act!

Dynamics

A ball weighing .2 Lbs. is dropped out the window of a pickup truck (approx. 5 ft?) moving horizontally at 45mph. If e (coefficient of restitution) between the ball and the ground is equal to .6, find the height of the ball's first bounce and the horizontal distance it will ...

Math

Mrs. Sue please help me! 7. A bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. You choose a marble, replace it, and choose again. What is P(red, then blue)? (1 point) seventy-seven over one hundred sixty-four nineteen over ...

math - pls check!!!

Write an equation in point-slope form for the line that passes through one of the following pairs of points (you may choose the pair you want to work with). Then, use the same set of points to write the equation in standard form and again in slope-intercept form. (5, 1) and (-...

math-old

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly, how many shoes must I pick before for sure that there is one matching pair in red or blue? Ms Sue answered 4. Request for explanation please. math - Ms. Sue, Tuesday, January 29, 2013 at 10:...

Math

Use each of the numbers 7, 8, 9, 10, and 11 once and only once to fill in the circles so that the sum of the numbers in the three horizontal circles equals the sum of the numbers in the three vertical circles. Of the three possible solutions, which numbers can be used in the ...

Statistics

Let X1;X2;X3;...;X6 be a random sample from a distribution with the following probability desity function: Fx(x) = (1+4x)/3 for 0<x<1 = 0 for x=<0; x>=1. (a) Determine the joint p.d.f of Y1 and Y6 where Y1<Y2<...Y6 are the order statistics. (b) Let R= Y6-Y1 ...

Pre-calculus

The angle of elevation from the end of the shadow to the top of the building is 63 degrees and the distance of 220 feet. 1) Find the height of the building to the nearest foot 2) find the length of the shadow to the nearest foot If 0 degrees </= 360 degrees, solve the ...

physics

A catapult gives a rock a vertical velocity of 122m/s. a. Determine the time the rock is in the air. b. Determine the maximum height the rock would reach. c. As the rock leaves the catapult the rock also has a horizontal velocity of 34m/s. solve for the rocks range. d. Solve ...

some algebra help (radicals)

I hope I am writing this down right.. I am trying to do some practice questions to learn 10^5 (sqrt)2y - 4^5 (sqrt)2y I am trying to figure out how to solve this They gave us some answers to choose from, but I am clueless on how to solve this 6y ^5 (sqrt)2 6y ^5 (sqrt)2y - 6y...

algebra

How do you enlarge a pentagon and it's interior segments by a scale factor of 2. Then, enlarge it again by a scale factor of 4?

algebra

How do you enlarge the pentagon and its interior segments by a scale factor of 2. Then, enlarge it again by a scale factor of 4?

U.S. History

I cannot find the answer to this question, or even any part of it: In the Monroe Doctrine, What countries was Monroe specifically addressing? What might the threat be from each of the four? My guess is that Britain is one because they could colonize America again. Maybe France...

Algebra

1. Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3. 2. In the sequence 2, 6, 10, … , what term has a value of 106? 3. Solve for the 101st term of the sequence: 6-p, 4+p, 2+3p, 5p, … .

half-life

If 250mg of a radioactive element decays to 200mg in 48 hours, find the half-life of the element. ln(No/N) = kt No=250 mg N = 200 mg t = 48 hours. Solve for k, then put k into the following equation and solve for t1/2. k = 0.693/t1/2

math

antonio watches 2/3 of the movie at home and then decides to finish watching it later. if he already has watched 2 hours of the movie, how long is it? 2/3*time = 2hrs solve for time.

math

Rose’s garden is in the shape of a trapezoid. If the height of the trapezoid is 16 m, one base is 20 m, and the area is 224 m2, find the length of the other base. How do I set up this problem so I can solve it? Thank you!

math 116

Translate. Let x represent the unknown number. Two more than four times a number is the same as six. The way I would solve this would be: 6=2+4x 6-2=2+4x-2 4=4x 4/4=4x/4 1=x is this right?

math 117

I made an error on the one before this because I did not enter the equations. Solve the system of equations by graphing Then classify the system as consistent or inconsistent __dependent or independent 8x-4y=-16 4y-8x=16

math

i don't understand what to do.if someone can tell me what to do i can try to get the answer. solve each system by graphing.identify systems with no solutions and systems with infinitely many solutions, using set notation

Math/Algebra

Solve the following system of equations. x+7y=8 (1) x=2-7y (2) What is the solution of the system? Type the ordered pair state that there is no solution. I don't understand what they are asking me to do. Should I use #2 in equation #1 or something else?

5th grade math

I am studying making conjectures about L-shaped numbers. The assignment says to list the first 25 L-shaped numbers. I am not understanding how to solve the problem.

math

my daughter is working on calculating how many triangles point up in equilateral triangle. This is her bonus question: solve this problem for an equilateral triangle with sides measuring n units each. I'm lost, help.

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

Im a little confused can someone please help? Solve: -7x-24=-26 1/3 This is what i did, not sure if I did it right. -7x-24=-26 and 1/3, -24 from both sides -7x= 2 and 1/3, then divide by -7 and got x= -2 and 1/3 over -7 I have no idea how to right that so I know it has to be ...

Math

One angle of a triangle measures 120 degrees. The other two angles are congruent. Write and solve an equation to find the measure of the congruent angles.

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

Use a graph to find a number delta such that if abs(x-pi/4) < delta then abs(tanx-1) < 0.2. I understand that the epsilon is 0.2. But what step do I take next? How do I solve the problem?

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

Harper is two times older than her brother Bill. Let (b) represent Bill's age. Which expression could be used to solve Harpers age? a. 2b b. b divided by 2 c. 2+B C. B-2 mY ANSWER IS B. IS THAT CORRECT?

math

solve the following exponential equation:show your work. e^x-e^-x/2=7 1. write exact answer. 2.write answer approximated to 3 decimal places. whaaaat? smh I don't get it at all.

math

How would you solve for these word problems in one variable inequality form? 1.One half of a number, increased by 9 is less than 33. 2.Six less than or equal to the sum of 4 and -2x.

math

solve 6x^3-13x^2+x+2=0 using a graphing calculator. then use your answer to write the given function in factored form. (do not use the factor theorem to factor this.) (6 marks)

math

solve 6x^3-13x^2+x+2=0 using a graphing calculator. then use your answer to write the given function in factored form. (do not use the factor theorem to factor this.) (6 marks)

math

Are the two solutions to x (2x+1) = 1 found by setting x = 1 and 2x + 1 = 1? Explain your reasoning. What are the solutions to this equation? Show how you arrived at your answer. Create an equation for your classmates to solve that requires factoring.

7th grade math

how do I solve for this: If 5/6 is divided by a certain fraction, a/b, the product is 1/4. What is the fraction a/b? Ans: (5/6)/(a/b) = 1/4 = do i need to divide both sides by 1/4 to get (5/6)/(1/4) = (5/6)x(4/1) = 20/6 = need to somehow get a/b by itself not sure what to do...

Math Check

Hi! Can someone check my answers? Thanks! Directions: Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x-5y=2 2x+5y=13 2.) 3x+11y=4 -2x-5y=9 My answers: 1.) (3,7/5) 2.) (-17,5)

math practice help

add or subtract (2x^2+6x+1)+(-7x^2+2x-3) 5x^2-4x-2 -5x^2+8x-2 5x^2-8x+2 -9x^2-8x+2 (3x^2-7x-4)-(6x^2-6x+1) -3x^2-x-5 -3x^2-13x+5 9x^2-x+5 3x^2-13x-5 These are just practice problems. could someone help me figure out how to solve them and explain how they got the answer? @Steve...

algebra/ math

Solve the problem. Leave the answer in exponential notation. The expression 2^6 x64^t approximates the number of bacteria after t hours. After 1/2 hr, how many bacteria are those? is it 2^6..

Math

Determine which system below will produce infinitely many solutions. A.-6x+3y=18 4x-3y=6 B.2x+4y=24 6x+12y=36 C.3x-y=14 -9x+3y=-42 D.5x+2y=13 -x+4y=-6 Solve the system of equations. x + 3y = −1 2x + 2y = 6 A.(-4,1) B.(2,-1) C.(4,-1) D.(5,-2) I think the answers are B for...

math

Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. I have no idea?

Math

Solve the proportion: Jose purchased a new pair of jeans from the clearance rack for $41.25. The original price marked was $75. What was the total discount that Jose received in the jeans?

Math

The average 3rd grafe student can read 60 words in 5 min. What is the average rate per minute? Write an expression to represent the problem. And solve the problem:

Math

2 similar quadrilaterals are shown below. Line ML equals 12cm. The ratio of the lengths of the corresponding sides MN and ST is 2:3, respectively. What is the measure of RS? I am confused on how to solve for line RS with the ratio and with 12.

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

The average 3rd grade student can read 60 words I 5 minutes. What is the average reading per rate? Write an expressionto represent the problem. Solve the problem

Math

1. All real numbers that are less than -3 or greater than or equal to 5 A. x<-3 or x≥5*** B. x<5 or x≥-3 C. x≤-3 or x>5 D. x≤-3 or x≤5 2. The time a cake must bake is between 25 minutes and 60 minutes, inclusive. A. 25<x<30 B. 25...

Math--algebra 2

Hello! I'm trying to solve these two questions-- |x-4|<3 and |5x-2|>5 and I'm not exactly sure how to answer For question 1 I got this- 1<x<7 and for question 2 I got this- x>(7)/(5) or x<-(3)/(5) I'd love some clarification! Thank you so so much!

math

Q: Corbin is playing a board game that requires rolling two number cubes to move a game piece. He needs to roll a sum of six on his next term and then a sum of ten to land on to the next two bonus spaces. what is the probability that Corbin will roll a sum of six and then a ...

Math

Mrs. Chans math class contributed 2 dollars and $1 coins to an earthquake relief fund. the number of $1 coins contributed was 8 less than 5 times the number of $2 coins contributed. if class raised total of 160 bucks, how many coins of each type was collected? it says i have ...

history

How did the Beatles change music and affect today's music? I have found some information on this, but I am doing a presentation and feel like I am repeating the same thing about peace and their song lyrics over and over again. Any more in-depth info would be appreciated. Thank...

U.S. Politics

Hi, I'm back again. You might see me post some questions from time to time over my summer holidays, but it's not about homework. I am willing to learn a few things over the break. Anyways, what is an electoral vote that is needed for a U.S. presidental candidate? I'm a bit ...

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