Answer:
b)
Step-by-step explanation:
Answer:
No real roots
Step-by-step explanation:
Given
7x² + 5x + 1 = 0 ← in standard form
with a = 7, b = 5, c = 1
To determine the nature of the roots use the discriminant
Δ = b² - 4ac
• If b² - 4ac > 0 then roots are real and distinct
• If b² - 4ac = 0 then roots are real and equal
• If b² - 4ac < 0 then the roots are not real
Here
b² - 4ac = 5² - (4 × 7 × 1) = 25 - 28 = - 3
Thus the 2 roots are not real
12(2a-b) would be your answer :)
Answer:
Sprinter #1
Step-by-step explanation:
Sprinter #1 is running at 96/12 feet per second: 8 feet per second
Sprinter #2 is running at 475/60 feet per second: approximately 7.9 feet per second
Sprinter #1 covers more distance per second.
Answer:
47% of American adult population
Step-by-step explanation:
The reason why polls are carried out is to obtain information that can represent the opinions, status or habits of the population. The polls do not include the total population, then include a small number of participants, but the results are extrapolated to the general population. There are always small margins of error resulting from polls, that is why the confidence levels are usually +/- 3 or 4%.
