**Answer:**

For number 1, -1.125 and -9/8. For number 2, -46.

**Step-by-step explanation:**

If those question marks are supposed to be a radical, then 12 and 13. The square root of 147= 12.12, which puts it between 12 and 13.

**Step-by-step explanation:**

cos 45° = distance to east / total distance=7,2

distance to east = cos 45° * 7,2 = 5,1 km

**Answer:**

405

**Step-by-step explanation:**

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of (1 - confidence level)/2. Use the calculator function of invNorm to find the z-score. The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p. For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

Round up to the next number, giving you 405.

**Answer:**

<h3>i think 30×12(-64)</h3>

do this simplification

your answer will come