401.752
multiply 386.3 by 4% (.04) then add the total to 386.3
Answer:
<u>Number of students:</u>
<u>Total of marks:</u>
- 5*6 + 4*7 + 7*8 + 10*9 + 4*10 = 244
<u>Mean mark:</u>
The length of the third side of the tringle must lie in between 7 and 7 i.e length of the third side will always be greater than 7 and smaller than 17 according to the properties of a triangle.
According to the given question.
We have a right angled triangle with the two side lengths 5 unit and 12 unit.
From the properties of a triangle we know that " the sum of the length of the two sides of a triangle is greater than the length of the third side". Or " the difference between the two sides of a triangle is less than the length of the third side".
Let the third side of the triangle be x units.
So, by the properties of a triangle we can say that
12 - 5 < x
⇒ 7 < x
And 12 + 5 > x
⇒ 17 > x
Therefore, the length of the third side of the tringle must lie in between 7 and 7 i.e length of the third side will always be greater than 7 and smaller than 17.
Find out more information about properties of a triangle here:
brainly.com/question/27711437
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3
7/2 or 3 1/2
9
12
You multiply the number on the top with whatever you are multiplying it with then divide by the number on the bottom
