exam Maths Puzzle Numerical Ability

Identify the solutions to the system of equations:
x2 + y2 = 25
16x2 + 25y2 = 400

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exam Other Question

Loan principal = $32669.95
APR = 9.0%
Payments = $671.71
Financed for 5 years with equal installments.

What is the total interest to be paid.

Don
WHAT IS A THREE DIMENSIONAL OBJECT WHICH HAS ONE BASE WITH SIDES OF THE SAME LENGTH?