The sides of a rectangle are (2x + 2) and (3x 4). Which of the following expressions
could represent the area of the rectangle?
-
5x – 8
b. 6x2 8
6x2 2x - 8
5x2
2x – 8

f

step-by-step explanation:

f

answer: procent 54 wynosi 33,33%

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

step-by-step explanation:

mean or average is 40.6