Answer:
a) 21,952
b) 3,375
c) 36
Step-by-step explanation:
a) 7 X 7 X 7 X 4 X 4 X 4
= 7cube X 4cube
= 343 X 64
= 21,952
b) 5 X 3 X 5 X 3 X 5 X 3( group it)
5 X 5 X 5 X 3 X 3 X 3
= 5cube X 3cube
= 125 X 27
= 3,375
c) 3 X 3 X 2 X 2
= 3square X 2square
= 9 X 4
= 36
Let the number of History books be x. Then:-
x + x - 59 = 343
2x = 402
x = 201
So there are 201 History books and (201 - 59) = 142 Chemistry books.
$35 is your answer, just do 25(0.40) which gives you 10 so add that to your original 25+10=35
