Answer:
thanks
Step-by-step explanation:
I have been patient trying to get a job
Answer:
What is the Question?
Step-by-step explanation:
If the discriminant of a quadratic equation is equal to -8, there are two complex roots.
<h3>Discriminant of a quadratic equation</h3>
The discriminant is used to determine the nature of quadratic equations.
The formula for calculating discriminant is given as:
D = b^2 - 4ac
If the discriminant is negative, it means that the nature of the solution will be a complex number.
Hence if the discriminant of a quadratic equation is equal to -8, there are two complex roots.
Learn more on discriminant here: brainly.com/question/2507588
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Answer:
Plane speed x mph
wind speed 20 mph
against wind x - 20 mph
with wind x + 20 mph
Distance against wind 140
Distance with wind 160
Time = same equate the time against with time with current
t=d/r
140 /(x- 20 )= 160 /(x+ 20 )
140 *(x+ 20 )= 160 *(x- 20 )
140 x + 2800 = 160 x -3200
140 x -160 x = -3200 + -2800
-20 x = -6000
/ -20
x= 300 mph
Answer: There is a difference between rote counting and rational counting. Rote counting involves the memorization of numbers. Rational counting tells children "how many there are." For children to count rationally, they need to demonstrate one-to-one correspondence.
