What is one fourth the difference of 16 and a number? which expression represents the phrase: 1/4 (16-x) 1/4 (x+16) 1/4 (x-16) 4 (x-16)

Step-by-step explanation:

Let the number be x

difference of 16 and a number =

one fourth the difference of 16 and a number =

The expression represents the phrase is   (16-x)

Step-by-step explanation:

Let the number is 'x'

The difference of 16 and a number is

16-x

The one fourth the difference of 16 and a number is

(16-x)

Hence, the expression which represent the phrase is

(16-x)

step-by-step explanation: i dont

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