Find the value of the discriminant. then describe the number and type of roots for the equation. -x^2-12x+4=0

2 real and distinct roots

Step-by-step explanation:

using the discriminant Δ = b² - 4ac

• If b² - 4ac > 0, then 2 real , distinct roots

• If b² - 4ac = 0, then 2 real and equal roots

• If b² - 4ac < 0, then 2 complex roots

for - x² - 12x + 4 = 0

with a = - 1, b = - 12, c = 4, then

b² - 4ac = (- 12)² - (4 × - 1 × 4) = 144 + 16 = 160

since b² - 4ac > 0 then there are 2 real and distinct roots

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.

d

step-by-step explanation: