Answer:
It creates a positive integer.
Step-by-step explanation:
Integers are whole number which could be negative or positive. Examples are; 2, 3, -1, -7 -5 etc.
Whenever an integer is squared, a positive integer is created. For example, let us consider integers; 3, 4, -3 and -4.
= 3 × 3 = 9
= -3 × -3 = 9
Also,
= 4 × 4 = 16
= -4 × -4 = 16
Therefore, the square of an integer creates a positive integer.
Answer:
x = - 1 ± 2i
Step-by-step explanation:
we can use the discriminant b² - 4ac to determine the nature of the roots
• If b² - 4ac > , roots are real and distinct
• If b² - 4ac = 0, roots are real and equal
• If b² - ac < 0, roots are not real
for x² + 2x + 5 = 0
with a = 1, b = 2 and c = 5, then
b² - 4ac = 2² - (4 × 1 × 5 ) = 4 - 20 = - 16
since b² - 4ac < 0 there are 2 complex roots
using the quadratic formula to calculate the roots
x = ( - 2 ± ) / 2
= (- 2 ± 4i ) / 2 = - 1 ± 2i
Answer:
1) 506.85 minutes
2) 17.33 minutes
3) 23.25 hours
Step-by-step explanation:
1) 16 minutes and 21 seconds
16 minutes and 21 seconds=16.35 minutes
Multiply by 31
2) 537 minutes 20 seconds
537 minutes 20 seconds=537.33 minutes
Divide by 31
3) 999 hours 45 minutes
999 hours 45 minutes=999.75 hours