Answer:
its d
Step-by-step explanation:
the number 30 is not listed in the problem there that is info that is not there
Let x = Amount invested at 2%
y = Amount invested at 9%
x + y = 34000 ×(-0.02)→ -0.02x - 0.02y = -680
0.02x + 0.09y = 2570 → 0.02x + 0.09y = 2570
add the equations 0.07y = 1890
divide by 0.07 both sides y = 27000
x = 34000 - 27000 = 7000
ANSWER:
Invested at 2%: $7000
Invested at 9%: $27000
Well , we now the password would be :
3 _ _ _
and if there is no 0 and 9, the combination must be between 1 to 8
So the possibility of password would be :
8 x 8 x 8 = 512 possibilities
The answer is option B.
Hope this helps
First, take 2.2 and subtract it from 8.5. You get 6.3. Split that by three parts, and it's 2.1. Now add that to the 2.2. You get 4.3
So, the answer: 4.3
God bless!
Kinda confused of the question
