four friends equally shared the cost of supplies for a picnic. the supplies cost $12.40. how much did each pay?
2 answers:
Answer:
$3.10
Step-by-step explanation:
We are given that
Total number of friends=4
Supplies cost=$12.40
We have to find the how much each friend pay.
The supplies cost is equally shared among four friends.
To find the amount paid by each friend we will divided the total supplies cost by 4.
Each friend pays the supplies cost=
Each friend pays the supplies cost=$3.10
When four fiends equally shared the cost of supplies then each friend pays the supplies cost $3.10.
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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!