Solve the equation using the quadratic formula. Please help !

decimal

x = 5.284 or 0.284

fraction

x = (21.136) / 4 or (1.136) / 4

Step-by-step explanation:

2x² - 10x - 3 = 0

x = [-b ± √b² - 4(a)(c)] / 2(a)

x = {-(-10) ± √[(-10)² - 4(2)(-3)]} / 2(2)

x = [10 ± √(100  + 24)] / 4

x = (10 ± √124) / 4

x = (10 ± 11.136) / 4

x = (21.136) / 4 or (1.136) / 4

x = 5.284 or 0.284

idk

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.