The base of a rectangle is 7 more than its height. if the area of the rectangle is
44 square centimeters, what is its perimeter?

Step-by-step explanation:

Let the height of the rectangle = x cm

The base of rectangle = x + 7

Area = 44 Sq.cm

base * height = 44

(x+7)* x = 44

x² + 7x = 44

x² + 7x - 44 = 0

x² - 4x + 11x - 44 = 0

x(x-4) + 11(x-4) = 0

(x-4)(x+11) = 0

x-4 = 0 or x+11 = 0

x = 4   0r x = -11

x =4 ( measurement cannot be in negative value)

Height = 4 cm

Base = 4 + 7 = 11cm

Perimeter = 2 * (base + height)

                 = 2*( 11+4) = 2*15

                 = 30 cm

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

nlgqer

step-by-step