It takes 10 minute to bike to the park
because in each minute it will take 10% percent for biking
Answer: a+a+a+a=4a
mark brainleist
Answer:
(A) 4
Step-by-step explanation: The mean is all the numbers added divided by the amount of numbers. so 2 + 3+ 6 + 5 = 16 then you add the 4 that is 20 then divide 20 by 5 and if the answer is 4 its correct. The answer is 4 so its correct.
1. Let the sides of a triangle be a, b and c.
Assume c is the largest side.
The maximum angle measure in an acute triangle can be 90°. In such a case we would have
![a^{2} + b^{2} = c^{2}](https://tex.z-dn.net/?f=%20a%5E%7B2%7D%20%2B%20b%5E%7B2%7D%20%3D%20c%5E%7B2%7D%20)
Now forget about side c, and open the angle between a and b just a little bit. Now clearly
![a^{2} + b^{2}](https://tex.z-dn.net/?f=a%5E%7B2%7D%20%2B%20b%5E%7B2%7D)
is larger that
![c^{2}](https://tex.z-dn.net/?f=c%5E%7B2%7D)
because the "new c" is larger than the old one.
2. So for 3 numbers to be the lengths of the sides of an acute triangle, the sum of the squares of the 2 smaller numbers must be at most equal to the square of the largest number but not more.
Check:
A. 4^2+5^2=16+25=41<49
B. 5^2+7^2=25+49=74>64
C. 6^2+7^2=36+49=85<100
D. 7^2+9^2=49+81=130<144
3. Correct answer: only B