Answer:

Step-by-step explanation:
The given statement is "I think of a number, add seven then divide by five".
Let the unknown number be x.
Now, add 7 to the number = x+7
If we divided them by 5,
.
So, the required algebraic notation is
.
Answer:
81
Step-by-step explanation:
27 total of pupils.
girls 1×27=27
boys 2×27=54
total 54+27=81
1 apple + 1 apple = 2 apples
Answer:
3.00x10^8
Step-by-step explanation:
So you want to make sure the number before the x10^ is beween 10 and 0 not including 10 and 0. So 1.00-9.99.
Move the demcil place up in 300,000,000 till your first number is between 1 and 9.99.
Then count how many places you moved it up, in this case 8
Add the amount of times you moved up to the x10^(in this space).
you answer is now 3.00 plus the x10^8
3.00x10^8