If I’m not mistaken it’s $22.74 I apologize if I’m wrong.
the answer is -8, the 9 is negative and -9+1= -8
1: none
2: infinite
3: one
4: none
5: one
31500 meters.
Step-by-step explanation:
3.5 km times 9 = 31.5 km
25.5 km = 31500 meters
<em>Let me know if you have any issues or need help!</em>
2x^2+20x=-38 divide both sides by 2
x^2+10x=-19, halve the linear coefficient, square it, than add that value to both sides of the equation, in this case add (10/2)^2=25...
x^2+10x+25=6 now the left side is a perfect square
(x+5)^2=6 take the square root of both sides
x+5=±√6 subtract 5 from both sides
x=-5±√6 (so answer c.)
