C) A rectangular lawn is twice as long as its breadth and its perimeter is 90 m. (i) Find its length and breadth. (ii) Find its area. (iii) Find the cost of growing grass all over it at Rs 12 per sq. m. plz do this with steps!

Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree