Answer:
21+3x
Step-by-step explanation:
Expand this:
3(7+x)
So it becomes:
21+3x
The first number in this item can be also expressed as 2.3 x 10³. Now, dividing the numbers 2.3 and 0.4 will give us an answer of 5.75. There exists a rule which states that when two similar numbers are divided only having different exponents, their exponents should be subtracted. The final answer to this item is therefore,
5.75 x 10¹¹
Answer:

Step-by-step explanation:

19% is 19/100 and there is nothing that can go into these numbers evenly so this is the simplest form
Answer:
54
Step-by-step explanation:
8*7-12/6=56-2=54