Set 3x+1 equal to 55
Your answer would be 18
Answer:
112°
Step-by-step explanation:
50 + 62 = 112
Answer:
0.85 < 3
Step-by-step explanation:
Answer:
Area of the triangle covered by the cars = 910.45 square km
Step-by-step explanation:
Since, all the sides of triangle ABC are given,
And formula for the area of a triangle with all sides given is,
Area = ![\sqrt{s(s-a)(s-b)(s-c)}](https://tex.z-dn.net/?f=%5Csqrt%7Bs%28s-a%29%28s-b%29%28s-c%29%7D)
Here, s = ![\frac{a+b+c}{2}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%2Bb%2Bc%7D%7B2%7D)
And a, b, c are the measures of the sides of the triangle.
If a = 39 km, b = 87 km and c = 58 km
s = ![\frac{39+87+58}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B39%2B87%2B58%7D%7B2%7D)
s = 92
Therefore, (s - a) = 92 - 39
= 53
(s - b) = 92 - 87
= 5
(s - c) = 92 - 58
= 34
Now area of the triangle ABC = ![\sqrt{92(53)(5)(34)}](https://tex.z-dn.net/?f=%5Csqrt%7B92%2853%29%285%29%2834%29%7D)
= ![\sqrt{828920}](https://tex.z-dn.net/?f=%5Csqrt%7B828920%7D)
= 910.45 km²
Area of the triangle covered by the cars = 910.45 square km
Answer:
![r=\frac{41}{14}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B41%7D%7B14%7D)
Step-by-step explanation:
![\frac{3r-2}{5} =\frac{5+2r}{8} \\\\8(3r-2)=5(5+2r)\\24r-16=25+10r\\24r-10r=25+16\\14r=41\\\\r=\frac{41}{14}](https://tex.z-dn.net/?f=%5Cfrac%7B3r-2%7D%7B5%7D%20%3D%5Cfrac%7B5%2B2r%7D%7B8%7D%20%5C%5C%5C%5C8%283r-2%29%3D5%285%2B2r%29%5C%5C24r-16%3D25%2B10r%5C%5C24r-10r%3D25%2B16%5C%5C14r%3D41%5C%5C%5C%5Cr%3D%5Cfrac%7B41%7D%7B14%7D)