Answer:
4
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
you you add three dollars and 25 cents plus $1 + 15 cents which is $4.40 and then times 20 will get you $88
Answer:
C & D
Step-by-step explanation:
x² + 3x - 3 = 0
a = co efficient of x² = 1
b= co efficient of x = 3
c = constant = -3
roots = (-b ±
)/2a
= (-3±
)/2*1
= (-3±
)/2
= (-3±√21)/2
![x = \frac{-3+\sqrt{21}}{2} ; x =\frac{-3-\sqrt{21}}{2}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-3%2B%5Csqrt%7B21%7D%7D%7B2%7D%20%20%20%20%20%3B%20x%20%3D%5Cfrac%7B-3-%5Csqrt%7B21%7D%7D%7B2%7D)
Answer:
![2](https://tex.z-dn.net/?f=2)
Step-by-step explanation:
![|a - b + c| = | - 8 + 5 + 1| = | - 2| = 2](https://tex.z-dn.net/?f=%20%7Ca%20-%20b%20%2B%20c%7C%20%20%3D%20%20%7C%20-%208%20%2B%205%20%2B%201%7C%20%20%3D%20%20%7C%20-%20%202%7C%20%20%3D%202)
12:00-9:30 = 2:30
12:30+8:30 = 8:30
2:30 + 8:30 = 11:00
11 total hours elapsed