siqijcueinf siqijcueinf

11-07-2017
Mathematics

contestada

The perimeter of a rectangle is 40 units. One side of the rectangle is 7 and the other is x+2. What's the value of x?

Respuesta :

koziadam koziadam

11-07-2017

Formula for perimeter of rectangle = 2l + 2w

Substitute

40 = 2(7) + 2(x+2)
40 = 14 + 2x + 4
40 = 18 + 2x
22 = 2x
/2 /2
11 = x

Therefore 11 = x

Proof:

x + 2 = ?
11 + 2 = 13

13 + 13 + 7 + 7 = 40

Answer Link

Otras preguntas

PLZZ HELP! Qs in the picture (Change the words in parenthesis to the correct conjugation and tense) (It could be conditional/future/prepositions/relative pronou

What is the surface area of this cylinder? Use a ~ 3.14 and round your answer to the nearest hundredth. 7 mm 9 mm square millimeters

in baking or any form of cooking. Measurements and calculations are very essential for the success of the finish product

How is carrying capacity related to the Trophic Pyramid?

i.Describe and discuss features of the occupationalenvironmentii.Describe and discuss ways in which these featuresaffect learning processes and/or application o

Find the solution for the system of linear equations by substitution: y = 3x + 4 and y = x + 2. Explain how you found the solution.

how do you factor and solve x^2-6x=-5

The Nile River is 4160 miles long. The Amazon River is 25/26 as long. How long is the Amazon River?

In the story, "My Dog Zipper," what does Kenny do? You may choose more than one answer. 1) Kenny wonders if Zipper has an owner 2) Kenny finds Zipper on his way

Find the mean of 3, 11, 6, 13, 14