4. If the determinant delta of a quadratic equation is positive, the equation has two real roots. If the determinant is negative, it has two imaginary roots. In this case, delta=b^2-4ac=(-1)^2-4*1*4=-15. Therefore, this equation has two imaginary roots.
Answer:
23√2
Step-by-step explanation:
1. Simplify √8 to 2√2
19√2 +2* 2√2
2. Simplify 2*2√2 to 4√2
19√2 + 4√2
3. Simplify
23√2
divide distance by speed
equation: time = distance / speed
120/8.5 = 14.117 seconds
8- 1/3 quarts
4- 2/3 quarts
Profit = Income - cost
Profit = 10s - (28 + 3s) = 10s - 28 -3s = 7s - 28.
Profit = 0
0 = 7s - 28
7s = 28
7s = 28/7
s = 4. This is the breakeven point.
Carlota must sell more than 4 shirts to make a profit
