You can use the measure of 112 on the similar shape to find b, as they are same side exterior angles. From there, you can find both a and c, because a/b and b/c are supplementary angles.
a = 68 degrees
c = 68 degrees
Answer:
You need 58.44/10=5.844 g NaCI
I don’t speak Spanish sorry
<u>The error is that they had placed the numbers in the wrong placeholder.</u> Remember that the Distance formula is
.
<em><u>Correct Work:</u></em>

A, B and C are collinear and B is in the middle.
so we have AB + BC =AC
6x +x-5= 23
7x -5=23
adding 5 to both sides
7x=23+5
7x =28
dividing both sides by 7
we get x=28/7 =4
So answer is x=4