Answer:
Charlie has used his phone in a month for at least 1404 minutes
Step-by-step explanation:
In order to solve this problem, we must first determine what will our variable be and what it will represent.
Let's say our variable is x and it will represent the number of minutes Charlie has used his phone.
After we set our variable up, we can set our equation up. The problem states that Charlie will pay a monthly fee of $18 and additional $0.06 per minute of use. The $18 is what is called a fixed cost and the $0.06 is the variable cost, which will depend on our variable x (the number of minutes spent). Taking this into account we can build an inequality that will represent the amount of money spent in a month, which will look like this:
so now we can solve that inequality for x, we can start by subtracting 18 from both sides, so we get.
Next, we can divide both sides of the inequality by 0.06 so we get:
so that's where the answer came from. Charly has used an amount of at least 1404 minutes
Answer:
23
Step-by-step explanation:
2x+14+x+7=90, 3x+21=90,3x=90-21. 3x=69, x=23
Answer:
A. StartRoot 3 EndRoot.
Step-by-step explanation:
We have to simplify the following expression
Now, we know that 27 = 3 × 3 × 3, hence .
And 12 = 2 × 2 × 3, hence
So, the given expression becomes
= 2 × 3√3 + 2√3 - 3√3 - 2 × 2√3
= 6√3 + 2√3 - 3√3 - 4√3
= √3
Therefore, the solution is A. StartRoot 3 EndRoot. (Answer)
Eighteen hundredths as a decimal is 0.18
<h3><u>Solution:</u></h3>
We have to find eighteen hundredths as a decimal
Eighteen hundredths means 18 over one hundred
We have to write 18 over one hundred as decimal
A decimal is a fraction written in a special form
Let us first write 18 over one hundred in fraction form
Eighteen hundredths = 18 over one hundred
Now divide 18 by 100 to get the decimal form
Thus the eighteen hundredths as a decimal is 0.18
I don’t know what you mean by “story” but 1/3 divided by 5 is 0.06