Answer:
.3
Step-by-step explanation:
0.4/10 is 0.04 this is 10 percent
.02 is 5 percent
so 0.04 times 7 is 0.28 this is 70 percent
so you then need to add 5 percent
this gets you .3
this is the way you learn in early middle school this method can be harder when it comes to more difficult numbers
Answer: C
Step-by-step explanation:
So, the original fraction is equal to
Answer:
Curved surface area of sphere = 2πr × 2r=4πr^2;
The new diameter is 120/100 from the old diameter;
2R = (120/100)x(2r);
So, R = 1.2 x r;
Curved surface area of new sphere = 4πR^2 = 4π(1.2xr)^2= 4πr^2x1.44= curved surface of old sphere x (144%);
Finnaly, the increase is 44%.
Step-by-step explanation:
The sum of the digits of a two-digit number is 13. if the digits are reversed, the new number is 9 more than the original number. find the original number
Answer:
Step-by-step explanation: