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Rudiy27
3 years ago
10

Please help :):):):):):):):......

Mathematics
2 answers:
3241004551 [841]3 years ago
8 0
The perimeter will be 42 units
Gelneren [198K]3 years ago
3 0
13+13=26
9+9=18
18+26=44

Hope this helps :)
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1. x = 25 inches
2. Triangle c
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Enrollment in French class at a high school is 0.72 of enrollment in Spanish class. What is enrollment in French class compared
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The perimeter of a triangle is 170 feet and the sides are in the ratio of 25:14:12. Find the area of the triangle.
Viktor [21]
Let
x,y, and z the long sides of the triangle 

we know that

x+y+z=170 ft------> equation 1
x/y=25/14----> y=14x/25------> equation 2
y/z=14/12-----> equation 3
x/z=25/12----> z=12x/25------> equation 4

substitute equation 2 and equation 4 in equation 1
x+[14x/25]+[12x/25]=170------> multiply by 25 both sides
25x+14x+12x=4250
51x=4250
x=4250/51
x=250/3
y=14x/25------> y=(250/3)*(14/25)----> y=140/3
z=12y/14-----> (140/3)*12/14----> z=40

Using Heron's formula,
Area of the triangle = √s (s-a) (s-b) (s-c)
where s is the semiperimeter
s=170/2-----> s=85 ft
Area=√85*[85-250/3]*[85-140/3]*[85-40]
Area=9.22*[1.67]*[38.33]*[45]------> Area=26558.21 ft²

the answer is
26558.21 ft²
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Answer:

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Step-by-step explanation:

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3 years ago
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