The answer is 10% I think
Answer:
Approximately 66.4 Meters
Step-by-step explanation:
So we have a rectangle with a width of 18.8 meters and a diagonal with 23.7 meters. To find the perimeter, we need to find the length first. Since a rectangle has four right angles, we can use the Pythagorean Theorem, where the diagonal is the hypotenuse.
![a^2+b^2=c^2](https://tex.z-dn.net/?f=a%5E2%2Bb%5E2%3Dc%5E2)
Plug in 18.8 for either <em>a </em>or <em>b. </em>Plug in the diagonal 23.7 for <em>c. </em>
<em />![(18.8)^2+b^2=23.7^2\\b^2=23.7^2-18.8^2\\b=\sqrt{23.7^2-18.8^2} \\b\approx14.4 \text{ meters}](https://tex.z-dn.net/?f=%2818.8%29%5E2%2Bb%5E2%3D23.7%5E2%5C%5Cb%5E2%3D23.7%5E2-18.8%5E2%5C%5Cb%3D%5Csqrt%7B23.7%5E2-18.8%5E2%7D%20%5C%5Cb%5Capprox14.4%20%5Ctext%7B%20meters%7D)
Therefore, the length is 14.4 meters. Now, find the perimeter:
![P=2l+2w\\P=2(14.4)+2(18.8)\\P=66.4\text{ meters}](https://tex.z-dn.net/?f=P%3D2l%2B2w%5C%5CP%3D2%2814.4%29%2B2%2818.8%29%5C%5CP%3D66.4%5Ctext%7B%20meters%7D)
The cube made up of 8 cubes would have a greater amount of volume. We can infer this without doing any math because a row is neither tall or deep to allow for great volume while a cube made up of other cubes is deep allowing for a bigger volume than the row.
Answer:
x=3
Step-by-step explanation:
![13+2x=19\\2x=19-13\\2x=6\\x=\frac{6}{2}=3](https://tex.z-dn.net/?f=13%2B2x%3D19%5C%5C2x%3D19-13%5C%5C2x%3D6%5C%5Cx%3D%5Cfrac%7B6%7D%7B2%7D%3D3)
We are to form the combination of 6 objects taken 2 at a time. This can be expressed as 6C2
![6C2= \frac{6!}{2!*4!} \\ \\ = \frac{6*5}{2} \\ \\ =15](https://tex.z-dn.net/?f=6C2%3D%20%5Cfrac%7B6%21%7D%7B2%21%2A4%21%7D%20%5C%5C%20%20%5C%5C%20%0A%3D%20%5Cfrac%7B6%2A5%7D%7B2%7D%20%5C%5C%20%20%5C%5C%20%0A%3D15%20%20)
This means, there can be 15 different combinations of 2 members that can sit in the front row.
So, the answer to this question is option A