Answer:
Step-by-step explanation:
1. find out how many times 21 can go into 52 (answer- 2 times)
2. find the remainder (answer- 10)
3. put the remainder over 21 (10/21)
4. make it a mixed number (2 10/21)
Answer:
Total charge= -25
Step-by-step explanation:
Given :
Charges of some ions
Aluminium +3
Phosphate -3
Chloride -1
Silver +1
To find total charge on 8 phosphate,7 chloride and 2 Aluminium atoms
Aluminium +3 × 2 =+6
Phosphate -3 × 8 = -24
Chloride -1 × 7 = -7
total charge=
+6-24-7 =+6 -31
= -25
Answer:
3199
Step-by-step explanation:
3387 – 45 – 46 – 48 – 49 = 3199
Answer:
5,6
Step-by-step explanation:
Answer:
pen = 12
book = 24
Step-by-step explanation:
x = cost of pen
2x + x = 36
3x = 36
x = 12
pen = 12
book = 24
