Guide :

# How do you find n? 3/5+2n/3=7/15

I can't figure out how to solve this...

## Research, Knowledge and Information :

### How do you solve -3( 2n - 5) = n + 5( 3+ 7n )? | Socratic

n=0 >-3(2n-5) = n+ 5(3+7n) -6n + 15 = n + 15 + 35n 15 - 15 = 36n + 6n 42n = 0 Therefore, ... How do you solve #4t-5=14#? How do you solve the equation #9=1+m/7#? ...

### Find the sum and choose the correct answer. 2n 3 + 4n 2 - 7 ...

Find the sum and choose the correct answer. - 957774. 1. Log in Join now ... Find the sum and choose the correct answer. 2n 3 + 4n 2 - 7 and -n 3 - 8n - 2-n3 + 4n2 ...

### How do you factor 14n^3 - 21n^2 - 8n + 12? | Socratic

Factor by grouping to find: 14n^3-21n^2-8n+12 =(7n^2-4)(2n-3) =(sqrt(7)n-2)(sqrt(7)n+2)(2n-3) ... How do you factor #14n^3 - 21n^2 - 8n ... 15 views around the ...

### Determine the value of n in the equation (n – 4) – 3 = 3 ...

Determine the value of n in the equation (n – 4) ... 15:00-04:00 (N-4) ... This would leave you with n-7= -2n.

### Factorial Function - Math is Fun

15: 1,307,674,368,000: 16: ... But I can tell you the factorial of half (½) ... (5/2)! = (5/2) × (3/2)! Can you figure out what (7/2)! is?

3(5-2n)+9n=? Find answers now! No. 1 Questions & Answers Place. ... So, the answer is: 3n+15 The steps (again without the explanation): 3(5-2n)+9n =15-6n+9n =3n+15

### Sequences and Series - Math Is Fun

Sequences. You can read a gentle introduction to Sequences in ... {3, 5, 7, 9, ...} is: 2n+1. And so we get: {3, 5 ... And we could find more rules that match {3, 5 ...

### find he series shown ∑n=3∞(2n+5) these r the c... - OpenStudy

find he series shown ∑n=3∞(2n+5) these r the choices: 7 + 9 + 11 + 13 + 15 11 + 13 + 15 + 17 + 19 11 + 13 + 15 + 17 + ... 7 + 9 + 11...

## Suggested Questions And Answer :

### 55% of graduates find a job in field, probability that 1 of 7 random graduate find a job

wot yu need tu du is: chans 1 student will NOT find a job=45% chans 7 students will NOT find a job=(0.45)^7 =0.0037366945 or 0.0037 thus chans 1 av 7 students will find job=1-0.0037 =0.996263 or 99.6%

### how do you get an equation of a tangent line to a parabola given the point of tangency

You need to find the derivative dy/dx of the curve and substitute x and y, if necessary, to find the slope at a particular given point. The slope is the tangent at the point. The standard linear equation y=ax+b can then be constructed, because the tangent will be a. To find b, the y intercept, substitute the coords of the given point into x and y and you'll be able to find b. That gives you the line. For example, let y=px^2+qx+r be the equation of a parabola, where p, q and r are constants, then dy/dx=2px+q. Let's say you're given the point on the curve where x=A, then dy/dx=2pA+q. This is a number because p, q and A are all known values (you'll be told what they are). This is your slope for the tangent, so a=2pA+q, and y=(2pA+q)x+b is the equation of the tangent line. To find b we first find out what y is on the curve when x=A. We know y=pA^2+qA+r. To make it easier to read, call this y coord B. So we substitute (A,B) in our linear equation to find b=B-A(2pA+q). It's much easier when you have actual numbers rather than symbols. In the same way you can find the equation of the perpendicular because its slope is related to the slope of the tangent. It's -1/(2pA+q), the negative reciprocal of the tangent. I hope this helps your understanding.

### Twenty percent of a certain number is 16. find the number. And show your work.

Twenty percent of a certain number is 16. find the number. And show your work. 1. Twenty percent of a certain number is 16. Find the number. 2.The length of a rectangle is 5 meters more than twice the width. The perimeter of the rectangle is 46 meters. Find the length and width of the rectangle. 3. One angle of a triangle is 47 degrees of the other two angles, one of them is 3 degress less than three times the other angle. Find the measures of the two angles. Please show all work. 1. 0.2x = 16    5 * 0.2x = 16 * 5    x = 80 2. L = 2W + 5    P = 2L + 2W    46 = 2(2W + 5) + 2W    46 = 4W + 10 + 2W    46 = 6W + 10    36 = 6W    6 = W    L = 2W + 5    L = 2(6) + 5    L = 12 + 5    L = 17    P = 2L + 2W    P = 2(17) + 2(6)    P = 34 + 12    P = 46 3. a = 47    b + c = 180 - 47 = 133    b = 3c - 3    (3c - 3) + c = 133    4c - 3 = 133    4c = 136    c = 34    b = 3c - 3    b = 3(34) - 3    b = 102 - 3    b = 99    a + b + c = 180    47 + 99 + 34 = 180

You need to see through the problem and apply whatever is necessary to reduce the number of variables till eventually there's only one to find. Remember a simple fact: if you have two variables you always need two independent equations to find them; for three variables, three equations; four variables, four equations. You use the multiplication property if it helps you to eliminate a variable between two equations. Take some examples: x+y=10, x-y=3; simply adding these two equations will eliminate y and help you find x. 2x=13 so x=6.5 and y=3.5; 2x+y=10, x-2y=10; we could double one equation or the other so as to match the coefficients of one or other of the variables; but since it's easier to add two equations rather than to subtract them, where we have a minus in one equation and a plus in the other, we would prefer to use the multiplier for the relevant variable. So we double the first equation and add to the second: 4x+2y=20 PLUS x-2y=10: 5x=30, making x=6 and y=-2. The last pair of equations could have been written: 2x+y=x-2y=10, but it's still two equations. There is no one way to solve equations, and you can save yourself a lot of stress by not assuming you have to remember a rigid technique or formula as “The Way to do it”. You'll find mathematics is more fun when you intelligently try different methods and use your natural creativity to guide you. And here's another interesting thing. Those questions about finding a missing number in a series can be tackled in many cases as solving simultaneous equations. You only need n equations to find n variables, and a series can be seen as a set of terms generated by a function y=f(x) for different values of x (the position in the series), giving different values of y (the terms in the series). f(x) is a polynomial of the type ax^n+bx^(n-1)+cx^(n-2)+... If there are four given terms n=3 and the variables are a, b, c and d; if there are 3 given terms, n=2 and the variables are a, b and c. There is always a solution, we just have to work through and find it!

### help! Find all x-intercepts and y-intercepts, if no intercepts exist say so

Problem: help! Find all x-intercepts and y-intercepts, if no intercepts exist say so f(x)=5x-8     f(x)=3x ,  f(x)=5 i dont get how to solve these and find the intercepts.... In place of f(x), substitute y. To find the y-intercept, set x to zero. To find the x-intercept, set y to zero. f(x) = 5x - 8 y = 5x - 8 y = 5(0) - 8 y = -8, the y-intercept y = 5x - 8 0 = 5x - 8 5x = 8 x = 8/5, the x-intercept f(x) = 3x y = 3x y = 3(0) y = 0, the y-intercept y = 3x 0 = 3x 3x = 0 x = 0/3 = 0, the x-intercept f(x) = 5 y = 5, the y-intercept There is no x term, so there is no x-intercept This represents a horizontal line five units above the x-axis.

### Find the equation? find the equation of a line through the point (-1,9) an perpendicular to 2x-4y =7

Find the equation? find the equation of a line through the point (-1,9) an perpendicular to 2x-4y =7 how do you find the equation of a line? We need the given equation in slope/intercept form. 2x - 4y = 7 -4y = -2x + 7 y = (-2/-4)x + 7/-2 y = 1/2 x - 3/5 A line perpendicular to this line has a slope that is the negative reciprocal of this line's slope. The negative reciprocal of 1/2 is -2/1, that is, -2. The new equation is y = -2x + b.  We need to calculate the y-intercept, b, for this new line. y = -2x + b b = y + 2x Plug in the x and y values of the given point. b = y + 2x b = 9 + 2(-1) b = 9 - 2 b = 7 Now, we can give the complete equation: y = -2x + 7

### how do you find the equation of a line given a point and what it is perpendicular too?

how do you find the equation of a line given a point and what it is perpendicular too? i have a point and an equation in slope intercept form and i have to find the equation thats perpendicular to the eqution given . How do i do that? The equation of a line that is perpendicular to the given line has a slope that is the negative inverse of the given slope. E.G., if the given equation were y = 1/2 x + 7, the new equation would be y = -2x + b, understanding that b is the y-intercept of the new equation. Now, take the x and y values of the point you have been given and plug them into the new equation to find the value of b. If the point were (7, -10), you would have -10 = -2(7) + b. Solve that and you would find that b = 4. So, in this case, the equation would be y = -2x + 4. Follow the same steps, using the values from your equation and point. You will end up with the correct equation for your problem.