Answer: Step 4
Step-by-step explanation:
The absolute value of 21 is 21, not -21,
Answer:
<u>4</u> <u>20</u>
1-4 1-20
2-2 2-10
4-5
Step-by-step explanation:
Please mark brainliest
4√13
64+144=208
208÷16=13
8²=64
12²=144
4²=16
Let the number of chemistry books be x and the number of calculus books be y
total number of books in each case is:
x+y=24
x=24-y.....i
Weight of each case:
2707.2/20
=135.36
thus
4.2x+6.0y=135.36..ii substituting i in ii
4.2(24-y)+6y=135.36
100.8-4.2y+6y=135.36
hence
1.8y=34.56
y=19.2
hence
x=24-19.2
x=4.8
thus the number of chemistry books was 4.8*20=96 number of calculus was
19.2*20
=384 books
Step-by-step explanation:
refer the above attachment
