Father deposit rupees 3500 in a bank at the rate of 7.5% years find the amount received by him at the end 4years

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.