Answer:
Step-by-step explanation:
Given number
It is not in scientific notation because:
- <em>The proper format for scientific notation is a×10ᵇ where </em><em>a</em><em> is a number or decimal number such that </em><em>the absolute value of a is greater than or equal to one and less than ten or, 1 ≤ |a| < 10</em>
As we see 17.4 > 10 which is against the rule above
Answer:
Billy has $27.51
Step-by-step explanation:
First let's set up an equation to solve this problem.
Assign a variable to Billy's amount. Let's make it x.
Then we just interpret the problem and solve:
2x - 1.30 = 53.72
+1.30 +1.30
----------------------------
2x = 55.02
(Divide by 2 on both sides)
----------------------------
x = $27.51
2x = Billy's amount doubled
2x - 1.30 = Taking away 1.30 from double Billy's amount
53.72 = Sara's amount
7/4 means you have to do 7 divided 4. You would get 1.75 then you have to do 1.75 times -4. You get -7. -7 is the answer.
I thought it was eight bro;;-;
