8y + 12 = 4y - 4
a. y = -4
b. y = -2
c. y = -1
d. y = -5

Which matrix multiplication is possible?

What are the values of each variable in the diagram below?

Can someone plz me understand how to do these. plz, show work.in exercises 1-4, rewrite the expression in rational exponent form.[tex]\sqrt[4]{625} \sqrt[3]{512} (\sqrt[5]{4} )³ (\sqrt[4]{15} )^{7}\\ (\sqrt[3]{27} )^{2}[/tex]