Suppose you are walking home after school. The distance from your home to school is 5 km. on foot, you can get home in 1/2 mins.
1 answer:
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Answer:
Step-by-step explanation:
Solving for x means you have to factor. First factor out the GCF of 2 to get:
and now we'll factor using the regular old method of ac and then factoring by grouping. In our polynomial, a = 3, b = 1, c = -6. Therefore, a times c is 3 * -6 which is -18. We need some combinations of the factors of 18 that will add to give us 1, the b term in the middle. The factors of 18 are:
1, 18
2, 9
3, 6 and that's it. Hm...it seems that won't work, so let's throw this into the quadratic formula, going back to the original and a = 6, b = 2 and c = -12:
and
and
and
and
which finally simplifies to
No wonder that didn't factor using the traditional method of factoring! We could have found that out by finding first the value of the discriminant, but oh well!
Answer:
.
Step-by-step explanation:
is the equation for a circle with center (h,k) and radius r.
You are given center (6,2) and radius 4.
So we will replace h with 6 and k with 2 and r with 4.
This gives us:
Simplify:
.