This problem is asking how many 's can go into 2 blocks. If you divide one box into 6 parts, each tiny box will be of the whole. Divide the other box into 6 parts as well, and you will get 12 of these parts. Check your answer by multiplying 12 by . The answer is which is also equal to 2.
÷ 5
For this one, think of it as we have one big box divided into thirds. We want to divide each portion by 5. So you should have 5 tiny boxes in each which gives you a total of 15 boxes. But if we look at it as one big box divided into 15 parts, we know that each of those is . Check your answer by multiplying by 5 and you get which is equal to .
Let me know if you have any questions, and good luck!
Since f(x) = x³ + x - 3 is continuous, it follows from the intermediate value theorem that for some c in the interval (1, 2), we have f(c) = 0, since f(1) < 0 < f(2).