Answer:
A. 2 distinct roots.
Step-by-step explanation:
2x^2 + 8x + 3 = 0
Finding the discriminant:
b^2 - 4ac = 8^2 - 4 * 2 * 3
= 64 - 24
= 40
The discriminant is positive but not a perfect square
So there are 2 distinct ,real, irrational roots.
Answer: 20 students participate in school sports.
Step-by-step explanation:
Since, Mrs. Perez has 28 students.
And, According to the question, 5 /7 of those students participate in school sports.
Therefore, the students participate in school sports = 5/7 of the total number of the students
= 
= 20
Thus 20 students participate in school sports.
Answer:
59.4 km
Step-by-step explanation:
First you need to find the circumference of the circle. 20*3.14=62.8. Then, you divide this by two, because there is only half of a circle, to get 31.4.
Then you can just add 16 + 12 + 31.4 to get 59.4.
Answer:
answer in the file
Step-by-step explanation: