Answer: yes
Step-by-step explanation: you can write a furmula by looking at the numbers
explanation:
In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we assign people or things to groups and apply some treatment to one of the groups, while the other group does not receive the treatment
1 )
![volume = 20 \times 5 \times 8](https://tex.z-dn.net/?f=volume%20%3D%2020%20%5Ctimes%205%20%5Ctimes%208)
![volume = 800 \: \: {m}^{3}](https://tex.z-dn.net/?f=volume%20%3D%20800%20%5C%3A%20%20%5C%3A%20%20%7Bm%7D%5E%7B3%7D%20)
![surface \: \: area \: = 4 \times 20 \times 8](https://tex.z-dn.net/?f=surface%20%5C%3A%20%20%5C%3A%20area%20%5C%3A%20%20%3D%204%20%5Ctimes%2020%20%5Ctimes%208)
![surface \: area \: \: = 640 \: \: {m}^{2}](https://tex.z-dn.net/?f=surface%20%5C%3A%20area%20%5C%3A%20%20%5C%3A%20%20%3D%20640%20%5C%3A%20%20%5C%3A%20%20%7Bm%7D%5E%7B2%7D%20)
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2 )
![v = 15 \times 3 \times 4](https://tex.z-dn.net/?f=v%20%3D%2015%20%5Ctimes%203%20%5Ctimes%204)
![v = 180 \: \: {m}^{3}](https://tex.z-dn.net/?f=v%20%3D%20180%20%5C%3A%20%20%5C%3A%20%20%7Bm%7D%5E%7B3%7D%20)
![s \: a \: = 4 \times 15 \times 4](https://tex.z-dn.net/?f=s%20%5C%3A%20a%20%5C%3A%20%20%3D%204%20%5Ctimes%2015%20%5Ctimes%204)
![s \: a \: = 240 \: \: {m}^{2}](https://tex.z-dn.net/?f=s%20%5C%3A%20a%20%5C%3A%20%20%3D%20240%20%5C%3A%20%20%5C%3A%20%20%7Bm%7D%5E%7B2%7D%20)
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3 )
![v = ( \frac{1}{2} \times 4 \times 5) \times 10 \\](https://tex.z-dn.net/?f=v%20%3D%20%28%20%5Cfrac%7B1%7D%7B2%7D%20%20%5Ctimes%204%20%5Ctimes%205%29%20%5Ctimes%2010%20%5C%5C%20)
![v = 100 \: \: {m}^{3}](https://tex.z-dn.net/?f=v%20%3D%20100%20%5C%3A%20%20%5C%3A%20%20%7Bm%7D%5E%7B3%7D%20)
![s \: \: a = (10 \times 5) + (10 \times 4) + (10 \times \sqrt{41} ) \\](https://tex.z-dn.net/?f=s%20%5C%3A%20%20%5C%3A%20a%20%3D%20%2810%20%5Ctimes%205%29%20%2B%20%2810%20%5Ctimes%204%29%20%2B%20%2810%20%5Ctimes%20%20%5Csqrt%7B41%7D%20%29%20%5C%5C%20)
![s \: a \: \: = 50 + 40 + 10 \sqrt{41}](https://tex.z-dn.net/?f=s%20%5C%3A%20a%20%5C%3A%20%20%5C%3A%20%20%3D%2050%20%2B%2040%20%2B%2010%20%5Csqrt%7B41%7D%20)
![s \: a \: \: = 90 + 10 \sqrt{41}](https://tex.z-dn.net/?f=s%20%5C%3A%20a%20%5C%3A%20%20%5C%3A%20%20%3D%2090%20%2B%2010%20%5Csqrt%7B41%7D%20)
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4 )
![v = ( \frac{1}{2} \times 3 \times 4) \times 7 \\](https://tex.z-dn.net/?f=v%20%3D%20%28%20%5Cfrac%7B1%7D%7B2%7D%20%20%5Ctimes%203%20%5Ctimes%204%29%20%5Ctimes%207%20%5C%5C%20)
![v = 42 \: \: \: {m}^{3}](https://tex.z-dn.net/?f=v%20%3D%2042%20%5C%3A%20%20%5C%3A%20%20%20%5C%3A%20%7Bm%7D%5E%7B3%7D%20)
![s \: a \: \: = (3 \times 7) + (4 \times 7) + (5 \times 7)](https://tex.z-dn.net/?f=s%20%5C%3A%20%20a%20%5C%3A%20%20%5C%3A%20%20%3D%20%283%20%5Ctimes%207%29%20%2B%20%284%20%5Ctimes%207%29%20%2B%20%285%20%5Ctimes%207%29)
![s \: a \: \: = 21 + 28 + 35](https://tex.z-dn.net/?f=s%20%5C%3A%20a%20%5C%3A%20%20%5C%3A%20%20%3D%2021%20%2B%2028%20%2B%2035)
![s \: a \: \: = 84 \: \: \: {m}^{2}](https://tex.z-dn.net/?f=s%20%5C%3A%20a%20%5C%3A%20%20%5C%3A%20%20%3D%2084%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%7Bm%7D%5E%7B2%7D%20)
Answer:
Estimates: $65
Actually: $73
65 / 73
= 0.9 (round to nearest tenth)
I hope this helps, I may be wrong. Somebody can correct me if I am wrong. :)
Answer: 11 - 15 = -4
Step-by-step explanation: And depends on what number it is.