Answer:
The length side of the triangle is ![\frac{10\sqrt{3}}{3}\ cm](https://tex.z-dn.net/?f=%5Cfrac%7B10%5Csqrt%7B3%7D%7D%7B3%7D%5C%20cm)
Step-by-step explanation:
we know that
The equilateral triangle has three equal sides and three equal internal angles of measure of 60 degrees each.
Let
b------> the length side of the equilateral triangle
Applying Pythagoras theorem
![b^{2}=(b/2)^{2}+5^{2}\\\\ b^{2}-(b/2)^{2}=25\\\\ (3/4)b^{2}=25\\ \\b^{2} =25*4/3\\ \\b=\frac{10}{\sqrt{3}}\ cm\\ \\b=\frac{10\sqrt{3}}{3}\ cm](https://tex.z-dn.net/?f=b%5E%7B2%7D%3D%28b%2F2%29%5E%7B2%7D%2B5%5E%7B2%7D%5C%5C%5C%5C%20b%5E%7B2%7D-%28b%2F2%29%5E%7B2%7D%3D25%5C%5C%5C%5C%20%283%2F4%29b%5E%7B2%7D%3D25%5C%5C%20%5C%5Cb%5E%7B2%7D%20%3D25%2A4%2F3%5C%5C%20%5C%5Cb%3D%5Cfrac%7B10%7D%7B%5Csqrt%7B3%7D%7D%5C%20cm%5C%5C%20%5C%5Cb%3D%5Cfrac%7B10%5Csqrt%7B3%7D%7D%7B3%7D%5C%20cm)
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Given Information
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Adrian can run 3/4 mile in 1 morning.
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Find how long he needs to run 1 mile
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3/4 miles = 1 morning
[ Divide by 3/4 on both side ]
3/4 ÷ 3/4 miles = 1 ÷ 3/4
1 miles = 4/3 morning
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Find how long he needs to take to run 3 miles
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1 miles = 4/3 morning
[ multiply by 3 through ]
3 miles = 4/3 x 3
3 miles = 4 mornings
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Answer : 4 mornings
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Answer:
-8
Step-by-step explanation:
you add 5 to -7 to get -2
7 x -1 is -7
so x = -1
8 x -1 = -8
Answer: 5
Step by step:
(3x+4)/2 = 9.5
3x+4 = 9.5*2
3x+4 = 19
3x = 19 -4
3x = 15
x = 5
The answer is 19.11 hope this helps