NO LINKS!! Please help me with this problem. Part 13

7.65 ft apart (to nearest hundredth)

Step-by-step explanation:

The A frame creates an isosceles triangle with equal legs of 10 ft and a vertex of 45°.  To find how far apart the footings should be, we need to find the base of the triangle.

To find the base, use the cosine rule:

where:

So for this triangle:

Substitute these values into the formula and solve for c:

Therefore, the footings should be 7.65 ft apart (to nearest hundredth)

correct answer:

i^31 = -i

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )