पिता की आयु पुत्र की आयु का पाँच गुना है। 3 वर्ष पूर्व पिता की आयु पुत्र की आयु का 8 गुना थी। तो पिता की
वर्तमान आयु है-
(a) 42 वर्ष
(c) 40 वर्ष
(b) 48 वर्ष
d) 35 वर्ष

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?

The john nash mall used 17,4000 kilowatt hours in may, with a peak load of 92 kilowatts. the demand charge is $5.95 per kilowatt, and the energy charge is $0.08 per kilowatt hour. the fuel adjustment charge is $0.017 per kilowatt hour. what is the total electricity cost for may?