650^4×650^5= 650 to the what power​

How many grams must be adde to 970g to make 1 and a half kg

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab