# Solve the formula for the variable given.then use the info to find the value of variable. S=πr(h+k) Find h if r=2,k=3,and S=50 I really don't know how to answer this kind of questions :(

212,369 results

1. ### algebra

Solve the formula for the variable given.then use the info to find the value of variable. S=πr(h+k) Find h if r=2,k=3,and S=50 I really don't know how to answer this kind of questions :(
2. ### algebra

Solve the formula for the variable given.Then use the given information to find the value of the variable. A=2πrw Find r if w=4ft And A=120ft square. Please someone help me with this!!!
3. ### algebra

how would i work out the following problems solve each formula in terms of the given variable 1. 5d-2g=9 ;g The formula A=2h(l+w) gives the lateral area a of a rectangular solids with length l, width,w and height h. 2. solve this formula for h 3. solve this formula for l The ...
4. ### Algebra

There are 4 problems that I don't understand how to solve so, please help me. A numerical explanation with words explanation would be nice. Thank you tutors. Rewrite each equation so it is in the form ax + b = c or x + d/e = f, where x is a variable. Then solve the equation. 1...
5. ### Statistics

Given that x is a normally distributed random variable with a mean of 28 and a standard deviation of 7, find the following probability: P(x<28) I understand that the means is 28 and the standard deviation is 7. However what I don't understand is how to get the value of x. ...

1. Explain in detail how to determine the value of the independent variable in a quadratic relation if the value of the dependent variable is known. Please check my answer - You would substitute the value for the dependent variable, then you would solve for the independent ...
7. ### geometry

I really dont get why there are two NQ and 2 CA. can someone explain 1) Find the value of the variable and MN if N is between M and Q. Round to the nearest hundredth if necessary. MQ = 5m + 1, NQ = 4m, NQ = 12 Select one: a. m = 4, MN = 5 b. m = 3, MN = 4 c. m = 2, MN = 9 d. m...
8. ### Adult Development and life Assessment

What do we call the variable that is manipulated by an experimenter when conducting in experiment. 1. Independent VARIABLE 2. Dependent variable 3. Beased variable 4. Extraneous variable My answer: Independent variable
9. ### Adult Development and life Assessment

What do we call the variable that is manipulated by an experimenter when conducting in experiment. 1. Independent VARIABLE 2. Dependent variable 3. Beased variable 4. Extraneous variable My answer: Independent variable
10. ### Bio Statistics - Math

I really need some help and guidance with these! 1.) What kind of variable is P1Wt? 6.) What is the approximate histogram shape of P1Ht? 7.) What is the mean, median, and mode of P1Ht? 9.) What kind of variable is P1Age? 10.) What is the approximate histogram shape of P1Age? ...
11. ### Stats

In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent. I. Rainfall; Crop yield II. Taxi fare; Length of ride ...
12. ### math/algebra

solve each of the following systems by substitution. 16) 5x -2y = -5 y - 5x = 3 20) 8x -4y = 16 y = 2x - 4 28) 4x -12y = 5 -x + 3y = -1 Step one: Solve on of the equations for one of the variables. y=2x-4 Step two:Substitute the expression for the variable found in step one ...
13. ### math solutions

solve the equation abx=cy for each of following the variable x the variable a the variable c solve the equation ay/x the variable y the variable z the variable x solve each of following for variable y 3y=ab ab=cy ayc=bx bx/y=R zy/x=b
14. ### Algebra

Use the formula d=rt to find the value of the missing variable d=42 feet, t=14 seconds then r= ft. second
15. ### Algebra 1

Use the formula d=rt to find the value of the missing variable d= 48 feet, t= 16 seconds r= ? ft/sec
16. ### math

can someone show me how to do these problems? Please? I really don't know how to answer them. I would really appreciate it... Solve the following formula for the variable indicated 9. r = d/t, where r = rate, d = distance, and t = time for d 10. 3x - y = 10 for y
17. ### math

can someone show me how to do these problems? Please? I really don't know how to answer them. I would really appreciate it... Solve the following formula for the variable indicated 9. r = d/t, where r = rate, d = distance, and t = time for d 10. 3x - y = 10 for y
18. ### Math

How would you solve this problem?: x2 + y2 = 25 x2 - y = 5 You have to solve for one variable either by substitution or elimination method and then use the answer to plug it in one of the equations to get the other variable. I've been at this problem for 30 minutes now and ...
19. ### pre-algebra

Rewrite the equation so the variable is alone. Solve to find the value of the variable. 42=-2h Divide both sides by 2. Then change the signs of both sides. That will provide the answer. Possibly in 1 step: Divide by -ve 2
20. ### math

1.solve for the given variable: x + 1/2 = 1 1/2 3/4 1*** 2 3 2. solve for the given variable: 10/13n = -30/39 -20/13 0 100/169 -1*** 3. solve for the given variable: k-3/4 = 10 43 5.5*** 37 52 PLEASE HELP ME WITH MY MATH!!!!
21. ### Calculus; Product Rule

Find the value of dy/dx for the given value of x. a) y = (1 - 2x)(1 + 2x), x = 1/2 y' = 2(1 + 2x) + 2(1 - 2x) y' = 2 + 4x + 2 - 4x y' = 4 How do I find the derivative at x = 1/2 if there is no x variable to substitute the x value with? According to my textbook, the answer is -...
22. ### statistics/psych

Find TWO media examples of two types of correlations (explained below). You will have to do some research to find these. Next: (1) Find one media example (don�t make up your own) of a correlation that could be argued to be spurious (third variable). Explain your media ...
23. ### Statistics (binomial random variable)

Let x be a binomial random variable with n = 10 and p = .4 Find the values. P (x›4) P (x≤4) I could really use some examples to help me get started and understand it. Thanks
24. ### MATH help

Which of the following statements is true? A . The dependent variable is represented on the x-axis. B . The independent variable is also know as the output. C . The dependent variable is represented in the 2nd column of a table. D . The independent variable depends on the ...
25. ### math

each variable represents one number. find the value of each variable. x+4=9 3+y=x
26. ### math

each variable represents one number. find the value of each variable. a+5=11 a-b=2 3xc=12 c divide d=4
27. ### Algebra

If 3 is subtracted from the numerator of a certain fraction, the value becomes 2/3. If 10 is added to the denominator of the original fraction, the value becomes 1/2. Find the original fraction. Solve the problems by using 2 variables HOW DO I START THIS WHAT ARE THE 2 ...

X, is assumed to be a random variable by placing letters of the word “YACHT” in a hat. If these letters are withdrawn then it gets replaced. A value of 1 is given when a vowel is retrieved, and a value of 2 is given when a consonant is retrieved while a value of 3 is given...
29. ### Probability

Let Z be a nonnegative random variable that satisfies E[Z^4]=4. Apply the Markov inequality to the random variable Z^4 to find the tightest possible (given the available information) upper bound on P(Z≥2). P(Z>=2)<= ?E[Z^4]/2 = 2 But this is not the right answer
30. ### algebra

which statement is not true about variable? a a variable is used to represent a qty whose values may change or vary b letters are often used as variable c a variable is a rule showing relationshopms amount quantities d known values can be substitues for variale s ina formula i...
31. ### Pre calc

Find an equation of the line that passes through the given points. (Let x be the independent variable and y be the dependent variable.) (3, 13) and (4, 20)
32. ### Math, statistics

Problem 1: The PDF of exp(X) (6/6 points) Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)= Solution: f_x(ln(y))/y When fX(x) = {1/3,0,if −2<x≤1,otherwise, we ...
33. ### math (algebra)

explain how to evaluate an expression with a variable when you are given a value for the variable
34. ### Geometry

*Find the value of the variable and LM if L is between N and M 9) NL = 5x, LM = 3x, and NL = 15 *Find the value of the variable and ST if S is between R and T 28) RS = 7a, ST = 12a, RS = 28 how do you work these out?
35. ### chemistry

Which of the answer choices is correctly defined as the variable in a controlled experiment that is purposely changed or manipulated? constant controlled variable dependent variable independent variable is it b?
36. ### calculus

Regard y as the independent variable and x as the dependent variable and use implicit differentiation to find dx/dy. y sec(x) = 9x tan(y)
37. ### math

Let X be a normal random variable with μ = 12 and σ = 2. Find the value of the given probability. (Round your answer to four decimal places.) P(7 < X < 9) =
38. ### algebraic expressions

Translate the phrase to the equivalent algebraic expression. If no variable is given, use x as the variable. See Example 1. The square of the quantity 34 less than dont know what answer is
39. ### algebra

use substitution to solve the linear system 3x+2y=-5 4x-3y=16 help plz!!! Solve for y in one formula, and then substitute that value for y in the other formula to solve for x. Once you find x, substitute that value into either formula to get the value for y. -3y = 16 - 4x y...
40. ### algebra

use substitution to solve the linear system 3x-y=15 x+2y=-2 Solve for y in one formula, and then substitute that value for y in the other formula to solve for x. Once you find x, substitute that value into either formula to get the value for y. 2y = -2 - x y = (-2-x)/2 = -1 - ...
41. ### algebra

solve the given formula for the variable a. r=ab/a+b
42. ### math,correction

Find expected value for the random variable. its suppost to be a table 6 X 2 i used the .... to represent separation z.....3......6.....9.....12.......15 p(z)..0.14..0.29..0.36..0.11...0.10 So what i did is i said e(x) = 3 (0.14)+ 6(0.29)+ etc to all the rest. and my result ...
43. ### Stats

6. In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent. I. Rainfall; Crop yield II. Taxi fare; Length of ...

Please check the solution below: X, is assumed to be a random variable by placing letters of the word “YACHT” in a hat. If these letters are withdrawn then it gets replaced. A value of 1 is given when a vowel is retrieved, and a value of 2 is given when a consonant is ...
45. ### Pre-Calc

I do not know which value I am solving for or how to get there these are the instructions and info given. Use the given conditions to find the exact value of the expression. sinx=(-5/13), tanx>0, sin(x-(pi/3)) There is no question and the answer is ((12(sqrt3))-5)/26 from ...
46. ### Stats formula

i have a hard time figuring out which formula's to use when solving problems. which would i use for the following: if X is a normal random variable with mean u=60 and a Std Dev.=2 find: A. p(x<58) B. p(x>63) C. p(57<X<64)
47. ### math

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I got this question wrong. I thought the answer would be y=-4x-6 I followed the following steps: 1...
48. ### Probability

The joint PMF, pX,Y(x,y), of the random variables X and Y is given by the following table: (see: the science of uncertainty) 1. Find the value of the constant c. c = 0.03571428571428571428 2. Find pX(1). pX(1)= 1/2 3. Consider the random variable Z=X2Y3. Find E[Z∣Y=&#...
49. ### Algebra 2

I know that were doing problems were there is a soultion given which is equal to X^? times a constant ... y = k x^? So this is problem I have to decide given a probelm x relationship to y (for example iverse square cube and so forth) this unkown variable is denoted witha (?) ...
50. ### math/statistics

The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation,letting the first variable be the independent (x) variable. Find the best predicated time of the interval after an eruption given that the current ...
51. ### Maths

X, is assumed to be a random variable by placing letters of the word “YACHT” in a hat. If these letters are withdrawn then it gets replaced. A value of 1 is given when a vowel is retrieved, and a value of 2 is given when a consonant is retrieved while a value of 3 is given...
52. ### graphing

I am having tuble with this problem: Graph the line given by the formula y=2x+3. Using the graph, find: The value of y corresponding to the value of x equal to −1; 2; 3; 5 I don't really know how to find the answer can you guys give me the answer and explain how you got ...
53. ### science

what should you ask yourself when looking for an independent variable in an experiment? I would ask whether that variable can be manipulated or not. Here is more info on experimental variables that might be helpful. An independent variable is the potential stimulus or cause, ...

X, is assumed to be a random variable by placing letters of the word “YACHT” in a hat. If these letters are withdrawn then it gets replaced. A value of 1 is given when a vowel is retrieved, and a value of 2 is given when a consonant is retrieved while a value of 3 is given...
55. ### Math PIZZAZZZ

how does a rodeo star get around?? well if you cant give me an answer can you help me. heres the instructions First Simplify the expression below. Then evaluate the expression for the given value or the variable. Find the simplified expression in the answer column and notice ...
56. ### geometry

Find the value of the variable and KL if K is between J and L. Given: JK = 6x, KL = 2x, and JL = 24
57. ### statistics

In a correlation study, we seek to determine; *if the IV cause an outcome in the DV. *Which variable is the cause and which variable is the effect. *The direction of causation. *How well one variable predicts another variable.

X, is assumed to be a random variable by placing letters of the word “YACHT” in a hat. If these letters are withdrawn then it gets replaced. A value of 1 is given when a vowel is retrieved, and a value of 2 is given when a consonant is retrieved while a value of 3 is given...
59. ### Science

There can be several controlled variables. If an experiment is to be useful, only one variable at a time can be manipulated intentionally. All other variables must be controlled throughout all parts of the experiment. If more than one variable is altered, the results of an ...
60. ### dma 040

Substitute the given values into the given formula and solve for the unknown variable. If necessary round to one decimal place. (use approximation 3.14(pie symbol). C+2(pie symbol)r; C=40.8 r=
61. ### algebra 2

find the value of this polynomials for the given values of the variable. -x^2-5x-6, x=-3 and x=-2
62. ### math

in the given equation find the value of variable m 17m-3/2=5m+14
63. ### multiple choice

In the statement, "Men are more violent than women," violence is the: a. dependent variable b.independent variable c. intervening variable d. control variable Can someone pls help.
64. ### Science

I have 8 questions and 1 question in the end that I don't need help with. Identify possible variables in the following situations. What variables can affect the sprouting of a bean seed? I think (I didn't answer yet so I'll just go with what I think oh and these aren't multi ...
65. ### algebra

Solve the formula for the variable given. P = r-c/n solve for c. (business) I have worked this problem so many times I'm getting confused. please help. Thanking you in advance
66. ### Geometry

Find the value of each variable and ST if S is between R and T. Draw a picture and solve each. RS=12, ST=2x, RT=34
67. ### Algebra

1. Determine whether the relation is a function. {(-2, -7), (3, -5), (6, -4), (9, -6), (10, -1)} 2. Determine whether the relation is a function. {(-5, -4), (-2, 9), (-1, -2), (-1, 7)} 3. Determine whether the relation is a function. {(-7, -1), (-7, 2), (-1, 8), (3, 3), (10, -...
68. ### Geometry-EXtended Exponents

Use the given ratio and information in the figure to find the value of the variable(s). XY:YZ:XZ=7:10:14 XY=b-7 These are side lengths YZ=b+20 to a triangle. Side XZ=5c-24 note XZ is the hypotenus
69. ### calculas

consider the following. Function y = cos 3x point (pi/4, -square root of 2/2) (a) Find an equation of the tangent line to the graph of f at the given point. (Let x be the independent variable and y be the dependent variable.)
70. ### algebra

How do I do substitution equations out of the equations in the system, pick the one that has the least amount of funky numbers. then make that equation equal to either x or y(or any other variable dependin on what kind of systems youre doing, usually just x and y in algebra 1...
71. ### maths

solve the formula for the given variable.Assume all variables as non-negative. A = 5s^2 for s
72. ### probability

The PDF of exp(X) Let X be a random variable with PDF f_X. Find the PDF of the random variable Y=e^X for each of the following cases: For general f_X, when y>0, f_Y(y)= f_X(ln y) --------- y When f_X(x) = {1/3,0,if −2<x≤1,otherwise, we have f_Y(y) = {g(y),0,...
73. ### math

N=x-y-z Where x,y,z are variable representation of some digit (0 to 9) Alok is like to maximize N while Bhanu Is like to minimize it towards this end ,Alok chooses a single digit number and bhanu substitute this for a variable of her choice (x,y or z)also chooses the next ...
74. ### Statistics

Height (ft) Interval after (min) 96 68 111 80 76 66 91 72 66 58 108 79 116 84 91 79 The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation, letting the first variable be the independent (x) variable. Find the...
75. ### Calculus HELP plz

Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=4x^1/2,y=5,2y+1x=5 Do you really mean "2y+1x=5" ? It is not customary to use the coefficient 1 in front of a variable. It is unnecessary. ...
76. ### Math

Evaluate the expression for the given value of the variable. Show your work. [-4b-8]+[-1-b^2]+2b^3;b=-2 Solve the equation. Check for extraneous solutions. 9[9-8x]=2x+3. Show your work. I really need help with both of these problems.
77. ### Algebra

Use the square root property to solve for the indicated variable. Assume that the variable represents positive numbers. Express all radicals in simplied form. 2e^2 = 3h, for e
78. ### probability

Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)= - unanswered fX(eyy) fX(ln yy) fX(ln y)y none of the above When fX(x) = {1/3,0,if −2<x≤1,otherwise, we have fY(y...
79. ### Math

X, is assumed to be a random variable by placing letters of the word “YACHT” in a hat. If these letters are withdrawn then it gets replaced. A value of 1 is given when a vowel is retrieved, and a value of 2 is given when a consonant is retrieved while a value of 3 is given...
80. ### Social studies

Select the phrase that correctly completes the sentence. The value of the dependent variable in a function is always __________ the value of the independent variable. A.greater than B.dependent on (MY ANSWER) C.equal to D.less than
81. ### biology

i am in 9th grade biology and i am REALLY confused about the difference between controll variable, responding variable, manipulated variable and controll group. any help would be great. i have a test TOMORROW!!!!
82. ### PLZZ HELP ME WITH THIS MATH MS SUE.

4. For the pair of similar solids, find the value of the variable. cylinders (1 point) 3 cm 18 cm 16 cm** 2 cm 5. For the pair of similar solids, find the value of the variable. pyramids (1 point) 12 mm 48 mm** 20 mm 3 mm ARE THESE CORRECT?
83. ### What study would be the best? Help with Psychology

What is the best kind of study to conduct when wanting to show that Variable X has a direct effect on Variable Y? The answer choices I am given are experiment, survey, observational study, non experimental study. I think the right choice would be an experiment. Please correct ...
84. ### MATH

How can I find the vertex, axis of symmetry? I know to find x and y intercepts i use the quadratic formula. I am given the parabola y=x^2+6x+5 I do not want the answer.. Just please explain to me how to solve for it. what method do I use???
85. ### financial matters

Hello I was searching on variable cost, but i could not find nothing that defines How are variable costs handled? can someone one please explained to me how variable costs are handled? thanks a bunch:)

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I don't know how to find the derivative, i Keep getting it wrong. But I know where to go after that.
87. ### UOP

Use the value d= rt to find the variable D= 100 feet t =25 second
88. ### math

N=9+x+y-z Where x,y,z are variable representation of some digit (0 to 9) Alok is like to maximize N while Bhanu Is like to minimize it towards this end ,Alok chooses a single digit number and bhanu substitute this for a variable of her choice (x,y or z)also chooses the next ...
89. ### probability

Paul is vacationing in Monte Carlo. On any given night, he takes X dollars to the casino and returns with Y dollars. The random variable X has the PDF shown in the figure. Conditional on X=x, the continuous random variable Y is uniformly distributed between zero and 2x. ...
90. ### Algebra

There are two similar triangles XYZ, and ABC. If x = 8, c = 5, and y = b, find z and a. How am I suppose to solve this problem if y = b? Do I find what b is first? Or will the answer be with a variable?
91. ### Math

in a relationship between variable called that changes in response to another variable? function input function independent variable dependent variable (my choice)
92. ### algebra

in a relationship between variables, what is the variable called that changes in response to another variable? a. function b. input function c. independent variable d. dependent variable
93. ### For Hellpp - Algebra 2

I removed your original post because of an inappropriate name. Please -- in the future do not string out your name across the page. _________________________________ Homework Help Forum: Algebra 2 Answer this Question | Responses Posted by ...
94. ### Intro to probability

Two balanced coins are tossed. What are the expected value and the variance of the number of heads observed? ================================== I'm confused on how to start. I don't know how many times im suppose to toss coin, and how to set up my table for the expected value ...
95. ### Math

Use the table below to answer the following question. x: 1, 2, 3, 4 y: 1, 4, 9, 16 Which is NOT true about the above table? A: It shows a linear function. B: The variable x increases by 1 each time. C: The rate of change is not constant. D: The variable y increases by a ...
96. ### Alg 2 HELP!!

1.) Find an exponential function of the form y=ab^x whose graph passes through the points (2,48) and (5,3072) 2.) The variables x and y vary inversely. Use the given values to write an equation relating x and y. Then find y when x=3. x=6, y=-1 3.) The variable z varies jointly...
97. ### Calculus

A three-sided fence is to be built next to a straight section of a river, which forms the fourth side of a rectangular region. The enclosed area is to equal 3200 m2. What is the minimum perimeter that such a fence can have? I developed two equations: 3600=xy & 2x + y = P .... ...
98. ### Accounting

An investor who is a non-resident for US tax purposes who buys stock of a US company is engaging in tax planning that uses the a.entity variable b.time period variable c. jurisdiction variable d. character variable
99. ### Math

What is the difference between an equation and an expression? Include an example of each. Can you solve for a variable in an expression? Explain. Can you solve for a variable in an equation? Explain. Write a mathematical phrase or sentence for your classmates to translate...
100. ### Physics

Find the slope of the line that is tangent to the given function’s graph for the specified value of the independent variable. f(x) = 9x – 8; x=10.