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belka [17]
2 years ago
13

Of the 50 states, 2/5 of the states starts with M A or N. How can you use equivalent fractions to find out how many states this

is?
Mathematics
2 answers:
Solnce55 [7]2 years ago
8 0
You can find an equivalent fraction.

2/5 = 20/50

That means that here are 20 states that start with M A or N.
Dmitriy789 [7]2 years ago
3 0
There are 50 states, and 2/5 start with M A or N, and 2/5 in percent form is 40%. And, 50*40%, which is the same as 50*0.4, equals 20. So twenty states start with M, A, or N.
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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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Can someone help me with this pls?​
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Step-by-step explanation:

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