Answer:
Calculating percentages are important as they apply to real life activities. For example, shopping. If you are on a budget and you want to know how much your total is with tax, you can convert the decimal for the tax, turn it into a percent and add it to your total. Another example is eating at a restaurant. A good tip is 15-20% so you can calculate this and add it to your price.
Step-by-step explanation:
4.58 x 10^-5
hope I helped
Answer:
(3x - 24)
(42+11)
Step-by-step explanation:
(3x - 24)
(42+11)
Answer:
4
Step-by-step explanation:
- represent the number he thought of with x
![\frac{7}{2} x + 16 = 30](https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B2%7D%20x%20%2B%2016%20%3D%2030)
- multiply through with the LCM which is 2
![2 \times \frac{7}{2}x + 16 \times 2 = 30 \times 2](https://tex.z-dn.net/?f=2%20%5Ctimes%20%20%5Cfrac%7B7%7D%7B2%7Dx%20%2B%2016%20%5Ctimes%202%20%3D%2030%20%5Ctimes%202%20)
![7x + 32 = 60](https://tex.z-dn.net/?f=7x%20%2B%2032%20%3D%2060%20)
![7x = 60 - 32](https://tex.z-dn.net/?f=7x%20%3D%2060%20-%2032)
![7x = 28](https://tex.z-dn.net/?f=7x%20%3D%2028)
![\frac{7x}{7} = \frac{28}{7}](https://tex.z-dn.net/?f=%20%5Cfrac%7B7x%7D%7B7%7D%20%20%3D%20%20%5Cfrac%7B28%7D%7B7%7D%20)
![x = 4](https://tex.z-dn.net/?f=x%20%3D%204)
Answer:
Option is right
Step-by-step explanation:
Given that bella want to know what the students at her school think of her show. which is the BEST group to survey to find this information
For getting accurate results she must select a random sample without bias
For this option a will not serve since she selects only students she recognizes.
Option B may not be right, as during show on the face they may not give correct opinion
C is right as a random sample is taken
D is wrong as the first 30 students may not be at random.
So option C is right