Answer:
[tex]a=2;b=5;c=-20[/tex]
Step-by-step explanation:
Given:
Number tree is given.
Given hint: To get a number in the square multiply the numbers in the two circles connected to it.
[tex]a*(-4)=-8\\a=-\frac{8}{-4} \\a=2[/tex]
[tex]a*b=10\\2*b=10\\b=\frac{10}{2} \\b=5[/tex]
[tex]b*(-4)=c\\5*(-4)=c\\c=-20[/tex]
Therefore, final answers are:
[tex]a=2;b=5;c=-20[/tex]