300 messages would have to be sent or received in order for the plan to cost same each month.
Step-by-step explanation:
Given,
Cost per month = $30
Per text sent or received charges = $0.10
Let,
x be the number of texts sent or received.
A(x) = 0.10x+30
A comparable plan costs = $60 per month
Text messages are unlimited.
B(x) = 60
For the two plans to cost equal;
A(x) = B(x)
![0.10x+30=60\\0.10x=60-30\\0.10x=30](https://tex.z-dn.net/?f=0.10x%2B30%3D60%5C%5C0.10x%3D60-30%5C%5C0.10x%3D30)
Dividing both sides by 0.10
![\frac{0.10x}{0.10}=\frac{30}{0.10}\\x=300](https://tex.z-dn.net/?f=%5Cfrac%7B0.10x%7D%7B0.10%7D%3D%5Cfrac%7B30%7D%7B0.10%7D%5C%5Cx%3D300)
300 messages would have to be sent or received in order for the plan to cost same each month.
Keywords: function, addition
Learn more about functions at:
#LearnwithBrainly
Answer:
17>n is the correct answer
Rectangles<span> and squares are </span>alike<span> in that both have </span>two<span> pairs of parallel sides and four right angles.</span>
We can use ratios and the cross-multiply-divide to find this.
The ratio 21:5 is avaliable via the question. We then need to compare that to the ratio x:100, the 100 being the percent and the x being the number of airplane parts.
21/5 = x/100
We can then solve for x to find the number of airplane parts. First we multiply by 100 on both sides to get 2100/5 = x. Therefore x = 420 and there are 420 airplane parts.
Answer:
u can use a calculator
Step-by-step explanation:
use BODMAS rule