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.
3.06 rounded to the nearest whole number is 3.
.06 is much closer to 0 than it is to 1, so round down.
3.06 rounded down is 3, so that is your answer.
C is when both are negative
Answer:
180 cm³
Step-by-step explanation:
A glass is 1/3 full. Then 75cm³ of orange juice is poured in. The glass is now 3/4 full. What is the total volume of the glass?
Let
x = total volume of the glass
1/3x + 75 = 3/4x
75 = 3/4x - 1/3x
75 = 9x-4x/12
75 = 5/12x
x = 75 ÷ 5/12
x = 75 × 12/5
= 900/5
= 180 cm³
x = 180 cm³
The surface area would be 3 times 4 which is 12cm3
