Use the rules of equations and inverse operations to solve the equation. In your final answer, include all of your work. 4 - x² = -16 I REALLY NEED HELP WITH THIS ITS FOR A QUIZ

x = ±2√5

Step-by-step explanation:

4 - x² = -16

we add subtract 4 from both sides. So,

4 - 4 - x² = -16 - 4

- x² = -20

we divide both sides by -1. So,

- x²/-1 = -20/-1

x² = 20

we take square root of both sides. So,

√x² = ±√20

x = ±√5 × √4

x = ±2√5

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: