There would be 5184 ways in which each subject books can be selected.
<u>Explanation:</u>
Number of geography books = 5
Number of chemistry books = 4
Number of Science books = 7
Different ways of selecting geography books = 5!
= 5 X 4 X 3 X 2 X 1
= 120
Different ways of selecting chemistry books = 4!
= 4 X 3 X 2 X 1
= 24
Different ways of selecting Science books = 7!
= 7 X 6 X 5 X 4 X 3 X 2 X 1
= 5040
Total different possible ways they can select them = 120 + 24 + 5040
= 5184
Answer:
40.9
Step-by-step explanation:
180-139.1
^ means to the power of with nothing after it, it's miss-used. Solving without the ^ symbol it is -2xy with the ^ symbol it's irrational and cannot be solved.
Answer:
3x+10=(2x-17)*2
(I multiplied it by 2, since ”in circle theorems”, she angle sub tended at the center, is 2* the angle sub tended at the circumference)
3x+10=4x-34
-x = -44
x = 44
9514 1404 393
Answer:
5
Step-by-step explanation:
The diagram shows that 4y = 20.
Then y is one of 4 equal parts, so y = (1/4)(20) = 5.
The value of y is 5.
