exam Maths Puzzle Numerical Ability

Please help me with this homework question! Find the quotient. Write your answer using exponents. 15 to the 21st power divide by 15 to the 13th power.

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exam Other Question

Can you help me with this problem...solve the following system of linear inequalities by graphing...I did not have button on my computer which shows the line underneath the greater and less than sign in the problem.

x-2y<4
x>1 Can you help me simplify 2+3i/8i
Thank you