102 rounds to 100 and 28 rounds to 30 so 100 * 30 = 3000 is the reasonable answer
<span>Similar means their sides have the same ratio but don't have to be the same length. So if two rectangles are similar with a scale factor of 2 then the ratio of their areas would be 4:1.
Hope this helped :)</span>
![7cm = 0.07m](https://tex.z-dn.net/?f=7cm%20%20%3D%200.07m)
![7 \times {10}^{0} cm = 7 \times {10}^{ - 2} m](https://tex.z-dn.net/?f=7%20%5Ctimes%20%7B10%7D%5E%7B0%7D%20cm%20%20%3D%207%20%5Ctimes%20%20%7B10%7D%5E%7B%20-%202%7D%20m)
In scientific notation the numeric value is the same only the power of the x10 multiplier changes
Answer:
See below.
Step-by-step explanation:
To calculate a percentage divide by the part by the whole, You will get a decimal. The decimal becomes a percentage after you multiply by 100. This moves the decimal place two places to the right. So 0.10 becomes 10%.
1. 20 is 50% of 40 since 20/40 = 0.5
2. 8/ 32 = 0.25 so it is 25%
3. 2/40 = 1/20 = 0.05 so it is 5%
4. 100/25 = 4 so it is 400%
5. 3/ 2 = 1.5 so 150%
To find a percentage of a number, multiply the number by the decimal conversion of the percent.
6. 0.15(300) = 45
7. 33/75 = 0.44 so it is 44%
8. 12/18 = 2/3 = 0.66 so it is 66%
9. 0.35(1000) = 350
10. 40 is 20% of what can be solved by remembering that 20* 5 = 100%. So 5*40 = 200. The number is 200.