Sarah's expression is correct because for every hour you get 9 dollars so 9(1) is 9 dollars for one hour. Then for two Hours it would be 9(2) which equals 18.
Answer:
52
Step-by-step explanation:
48+8/2
48+4
52
A short-cut to accurately evaluate the given expression above is using a scientific calculator where one can include integrals and evaluate using limits. In this case, using a calculator, the answer is equal to 0.2679. One can verify this by integrating truly letting 1-x^2 as u and use its du to be substituted in the numerator
9.73, or 9.73x10^-3, hope this helped!
Let's review:
<span><u>Inverse Operations:</u>
</span>Inverse Operations are operations which undo each other!
I'll give the following Inverse Operations in this form.
Operation -> Inverse Operation
Addition -> Subtraction
Subtraction -> Addition
Multiplication -> Division
Division -> Multiplication
That's all of them we'll need to know to solve this problem!
9x + 3 = 3x + 9
First Step!: Move all of the variables to once side (Numbers with x in them). (Prioritize the lower one so we won't need to work with negative numbers) Subtract 3x on both sides (Subtract, because the number is positive)
9x - 3x + 3 = 3x - 3x + 9
3x - 3x = 0
9x - 3x + 3 = 9
Move the 3 to the right by subtracting it on both sides.
9x - 3x + 3 - 3 = 9 - 3
3 - 3 = 0
9 - 3 = 6
9x - 3x = 6
Subtract like terms. (Just like you would subtract 9 - 3). Note that they are only like terms, because they both have the same variables (x) that are the same power (1).
6x = 6
Divide 6 on both sides to get your answer.
6x/6 = 6/6
The 6's cancel out and we are left with 1 on the left AND right, because 6/6 = 1.
x = 1
Plug x in to check.
9(1) + 3 = 3(1) + 9
9 + 3 = 9 + 3
Those are definitely equal!
I hope that helped. If it did then consider giving me the brainliest answer. Thanks.
