23*+5 6 3-890 + 567- 678-876*8976
Answer:
let n be the number then the sum of this number and 7 is n +7 and 3 times this sum is 3(n +7) 5 times the number less thirteen is 5n − 13
Step-by-step explanation:
The question is asking "how many substances has their mass recorded" to find the answer you would simply count how many substances (the dots above the graph) there are. After counting you will see that there are 13 which is the answer to your question.
Hope this helps! :)
Step 1 : Divide the numerator by the denominator.
Step 2 : Write the quotient in the front as a whole, remainder in the numerator part and divisor as the denominator.
Therefor you'll have 7 1/7 as a mixed number.