You just need to list the factors of all 3 numbers, and see what numbers they have in common!
15: 1,3,5,15
18: 1,2,3,6,9,18
12: 1,2,3,4,6,12
so in all you can say that the common factors of 15,18,12 is: 1 and 3
x is the base and 4 is the exponent
The required distance covered is 90 units
<h3>Distance formula</h3>
The formula for calculating the distance between two points is expressed as shown:
The required coordinates missing are (0, 42.78) and (90.42.78). Substiute the coordinate into the formula:


Hence the required distance covered is 90 units
Learn more on distance formula here: brainly.com/question/1872885
X should equal 8 because if you add the three numbers they give you. You will get 20 and the whole thing is 28
30 I’m pretty sure if not lmk