Answer:
C. b²< 40
Step-by-step explanation:
2x²+ bx + 5=0 has no real solutions
=> D< 0
b² < 4ac
b²< 4(2)(5)
b²< 40
Answer:
-7+26i
Step-by-step explanation:
Use FOIL
2•4+2(3i)+5i•4+5i(3i)
Simplify by combining like terms for your answer
8+6i+20i-15
-7+26i
Answer:
12 45 785 96
Step-by-step explanation:
Answer:
6 percent
Step-by-step explanation:
1 ) 360/9 = 40 - 40 dollars earned per month
2) 40 x 12 = 480 - earned per year
3) 6000/9 = 666.67 x 12 = 8000 per year
4) 480/8000 = 0.06 / 6 percent
Lets check: 6000 x 1.06 = 6360 which is the amount of interest she gets paid in 9 months