24.15 for the first question. 32.2 x .75 + 24.15
108% for the second question. 81.54 divided by 75.5 = 1.08 made into percentage is 108%
Hope this helps, please mark brainliest if it was correct!!
Answer:
I got a, so sorry if I'm wrong. math isnt my strongest subject. if I am right please mark brainliest
Answer:
![a.\ \ \ A=684\ m^2](https://tex.z-dn.net/?f=a.%5C%20%5C%20%5C%20A%3D684%5C%20m%5E2)
![b.\ \ \ A=130.2 \ km^2](https://tex.z-dn.net/?f=b.%5C%20%5C%20%5C%20A%3D130.2%20%5C%20km%5E2)
Step-by-step explanation:
a. Area is calculated by summing the areas of the prism's individual surfaces.
#First, calculate the areas of the right-angled surfaces:
![Area=2(\frac{1}{2}bh), b=9, h=12\\\\=2\times \frac{1}{2}\times 9\times 12\\\\=108\ m^2](https://tex.z-dn.net/?f=Area%3D2%28%5Cfrac%7B1%7D%7B2%7Dbh%29%2C%20b%3D9%2C%20h%3D12%5C%5C%5C%5C%3D2%5Ctimes%20%5Cfrac%7B1%7D%7B2%7D%5Ctimes%209%5Ctimes%2012%5C%5C%5C%5C%3D108%5C%20m%5E2)
#We then find the areas of the rectangular surfaces:
![A=lw\\\\=15\times 16+9\times 16+16\times 12\\\\=576\ m^2](https://tex.z-dn.net/?f=A%3Dlw%5C%5C%5C%5C%3D15%5Ctimes%2016%2B9%5Ctimes%2016%2B16%5Ctimes%2012%5C%5C%5C%5C%3D576%5C%20m%5E2)
#We sum the areas to find the total surface areas:
![A=\sum{Areas_i}\\\\=108+576\\\\=684\ m^2](https://tex.z-dn.net/?f=A%3D%5Csum%7BAreas_i%7D%5C%5C%5C%5C%3D108%2B576%5C%5C%5C%5C%3D684%5C%20m%5E2)
Hence, the prism's surface area is ![684\ m^2](https://tex.z-dn.net/?f=684%5C%20m%5E2)
b.Area is calculated by summing the areas of the prism's individual surfaces.
#First, calculate the areas of the right-angled surfaces:
![A=2\times \frac{1}{2}bh,\ b=12, h=4.1\\\\=2\times 0.5\times 12\times 4.1\\\\=49.2 \ km^2](https://tex.z-dn.net/?f=A%3D2%5Ctimes%20%5Cfrac%7B1%7D%7B2%7Dbh%2C%5C%20b%3D12%2C%20h%3D4.1%5C%5C%5C%5C%3D2%5Ctimes%200.5%5Ctimes%2012%5Ctimes%204.1%5C%5C%5C%5C%3D49.2%20%5C%20km%5E2)
#We then find the areas of the rectangular surfaces:
![A=lw\\\\=5\times 3+3\times 10+12\times 3\\\\=81\ km^2](https://tex.z-dn.net/?f=A%3Dlw%5C%5C%5C%5C%3D5%5Ctimes%203%2B3%5Ctimes%2010%2B12%5Ctimes%203%5C%5C%5C%5C%3D81%5C%20km%5E2)
#We sum the areas to find the total surface areas:
![A=A_r+A_t\\\\=81+49.2\\\\=130.2 \ km^2](https://tex.z-dn.net/?f=A%3DA_r%2BA_t%5C%5C%5C%5C%3D81%2B49.2%5C%5C%5C%5C%3D130.2%20%5C%20km%5E2)
Hence, the prism's surface area is ![130.2 \ km^2](https://tex.z-dn.net/?f=130.2%20%5C%20km%5E2)
Answer:
By remembering a few simple rules, you will be able to divide any negative fraction problem you come across. Ignore the negative sign at first and multiply one fraction by the reciprocal of the other. The reciprocal is attained by simply flipping the numerator and the denominator.
Y= 32 if x= 8, 2 times 16 is 32