Solution:
Note that :

and If the square of the length of the longest side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle. In this case, this statement is not true. We can conclude that it is not a right triangle.
Solution:
It is given that length of a rectangle is 3 more days than than twice its width. The perimeter of the rectangle is 42 centimeters.
So,
- Perimeter of Rectangle = 42 cm
Let Required Breadth of Rectangle be x
- Then, Length of Rectangle = 2x + 3
Now, We have ;
Perimeter of Rectangle = 2(l+b)
Perimeter of Rectangle = 2(2x+3+x)
42 = 2(3x+3)
42 = 6x + 6
42 - 6= 6x
36= 6x
x = 6 cm
- So, Length of Rectangle = 2x + 3
Length of Rectangle = 2(6) + 10
Length of Rectangle = 22 cm
Answer:
a ≈ 21.8
Step-by-step explanation:
We require the third angle in the triangle
Subtract the sum of the 2 angles from 180
third angle = 180° - (75 + 31.8)° = 180° - 106.8° = 73.2°
Using the Sine rule, that is
=
( cross- multiply )
a × sin75° = 22 × sin73.2° ( divide both sides by sin75° )
a =
≈ 21.8 ( to the nearest tenth )
Answer:
A. 1÷(X+1) (x-2)
some steps are directly
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Answer:
yes
Step-by-step explanation: