Evaluate the expression for the given value. 0.5w+3x, when w=6, x=5

need more info

Step-by-step explanation:

The questions on this practice exam are taken from exams given in previous ... a. 2(3x − 7)+ 5 = 2⋅3x − 2⋅7 + 5 a. distributive b. 7⋅. 1. 7 x = x b. inverse c. (3x + 2y)+ 4 ... 6. Evaluate the expression 5x − 4a2 + 2y for x = 6 , y = −4 , and a = 3. (2 points) ... Decide whether 20 is a solution to the equation 0.5(x − 4) = 80.

Step-by-step explanation:

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

hi! i think the answer is 1/2 : )