For this case we have the following equation:
12x2-5x-2 = 0
Using the resolver we have:
x = (- b +/- root (b ^ 2 - 4 * a * c)) / (2 * a)
Substituting values we have:
x = (- (- 5) +/- root ((- 5) ^ 2 - 4 * 12 * (- 2))) / (2 * 12)
Rewriting:
x = (5 +/- root (25 +96))) / (2 * 12)
x = (5 +/- root (121))) / (2 * 12)
x = (5 +/- 11) / (2 * 12)
Answer:
One root is positive and another is negative.
If you can buy [email protected] you must have at least 8(61)=488 cents
We get 488/75 = 6.50666... So at 75 cents a pop, you can buy 6 and have some change left over.
Answer: 6
Answer: i believe the answer is 4
Step-by-step explanation:
she can have
green red yellow purple
green yellow purple orange
green red purple orange
green red yellow orange
i couldn't see anymore combos but i could be wrong
4 batches: 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 = 4 4/4 = 5
6 batches: 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 = 6 6/4 = 7 1/2
7 batches: 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 = 7 7/4 = 8 3/4
8 batches: 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 + 1 1/4 = 8 8/4 = 10
The answer is C because 8 batches needs 10 cups of flour, and 7 batches is closest to 9 cups than 6 batches.
You can also look at it like this:
1 1/4c ≤ 9 (c is # of cups)
Or you could have multiplied 4, 6, 7, 8 to 1 1/4 or 1.25
