Answer:
C. 
Step-by-step explanation:
I think the equation meant
?
Anyways, to factor these kinds of quadratic, keep into consideration:

ONLY if:

Start off by finding factors of c, which in this case, -18:
±(1, 2, 3, 6, 9, 18)
If one of the numbers is negative then the other number must be positive.
Find which two factors will sum up to b, which in this case, is 3.

The only two factors that work are 6 and -3.
Replace them into the factored form:

Answer:
4. 120
5. 20
6. 55
Step-by-step explanation:
All straight lines have a degree of 180, so the angle measures all have to add up to 180 degrees.
<span>The island that has the population density ranging from less than to up to two hundred fifty people per square mile is Vancouver Island. The island is roughly 12,079 square miles with a total population of 748,937 according to the 2009 census bureau.</span>
Answer:Perimeter=5*2+2*(x-2)
Step-by-step explanation:
Because perimeter =2*length+2*width
1.53*10^10 because the total value would = 17,000(9.0*10^5) which is equals, when multiplied, 15300000000. Which is equivalent to 1.53*10^10 <span />