Algebra1

posted by .

P=2l+2w
Solve for l.
Please show me how you got your answer so I will understand how to do these problems. Thank you.

• Algebra1 -

P=2l+2w

Perimeter = 2 * length + 2 * width

This is how you find the perimeter (distance around) a rectangle.

Suppose you want to put a border around a room. If the room is 15 feet long and 12 feet wide, then you'd figure the perimeter this way:

P = 2l + 2w
P = (2 * 15) + (2 * 12)
P = 30 + 24
P = 54

So -- you'd need 54 feet of the border for the room.

• Algebra1 -

thanks!

• Algebra1 -

You're welcome.

• Algebra1 -

How many gallons of paint is needed to paint a wall whose dimensions are 11 feet by 19 feet with a 8 foot ceiling?

Similar Questions

1. Pre Algebra

Please help me with some problems. Thank you! Solve the equation by square root property. 3. 2x^2 = 26 I don't understand how to solve this problem. Solve the equation using the quadratic formula. 7. 7x^2=-8x -2 This is what I got …
2. Algebra problems

I have some problems that I would like checked please. Find and simplify the difference quotient f(x+h)-f(x)/h, h can not equal 0 for the given functions. 1. f(x)=x^2+3x+9- I got 2x+h+3 Evaluate the piecewise function at the given …
3. algebra

show how to solve these problems: 1. 6x - y = -4 2x + 2y = 15 answer:x = 1/2 y = 7 2. x +y = 1 x = -1/3 2x - y = -2 y = 4/3 3. x - y = 3 x = 5/2 6x + 4y = 13 y = - 1/2 I just need to know how to solve these problems. Please show me …
4. 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 …
5. introductory algebra

I had these problems on my test and for some reason got them wrong. Here are the problems: Solve: x-y=9 x+y=1 The test states that the answer is (5,-4) I've checked ,y work and used substitution to solve this and still get x=4, y=-5. …
6. math

how do you solve these problems? 1.2x/3 + 1/3 - x/8= 2/3 2. 3n + 9/10 + n/5= -2 3/10 3. 3k/4 - 28 - 2k/3 = 37 thank you can you please show me step by step how you got the answer?
7. Dividing Decimals

I need Help with solving these problems. If you could show me the steps I think I will be able to get it. 1) 0.87/0.2 = 4.35 2)4.4/0.3 = 14.66 3)5.0/5.5 = 0.90 I got the answer by Calculator but when I do it myself I don't see how …
8. Algebra1

I have to solve for "x": bx/c=2-cx/b please show your work! Thank you!