1.1 Study the calculation: 30 - 5x 2 + 12 - 4. The next step determining the answer
will be:
(2)
A. 25 x 2 + 12 - 4
B. 30 - 5 x 14 - 4
C. 25 x 14 - 4
D. 30 - 10 + 3
E. None of the above​

Layla answer 21 of the 25 questions on his history test correctly. what decimal represents the fraction of problem he answer incorrectly.

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]

The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.