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

-2 = g - 9 solve equation

there were 625 ears of corn and 247 tomatoes sold at a farm stand.how many more ears of corn were sold than tomatoes?

True or false, Englishmen became so disillusioned with the French Revolution that they eventually rejected all the goals and ideals it presented.

In their 1943 meeting at Casablanca, Allied leaders decided to invade a. Italy. b. France. c. Germany. d. North Africa.

With respect to global connections, association with _______ offers the brightest immediate future for many African countries. A. India B. the United States.

is granite rock a mixture,compound, or element?

Forms of money in the United States consist of paper money, coins, and _____. bartering minting checking account balances

Exit Fill in the blank: The spread of ___________ was responsible for the spread of telegraph lines. A. settlement houses B. military forts C. railroads D. dis

Which term describes a behavior of an organism that allows it to survive in its particular environment? a. evolution b. adaptation c. organism d. ecosystem

Postwar West Germany became a. socialist. c. a constitutional monarchy. b. democratic. d. a limited dictatorship.