Martina has a circle with a diameter of 6 inches. She doubled the diameter to make a new circle. Now, Martina says that the ratio of the circle’s circumference to its diameter has also doubled. Correct her mistake

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.