The sum of angles of a triangle is 180°.
84 +(x +59) +(x +51) = 180
2x +194 = 180 . . . . . . . . . . . . . collect terms
2x = -14 . . . . . . . . . . . . . . . . . . subtract 194
x = -7 . . . . . . . . . . . . . . . . . . . . divide by 2
The value of x is -7.
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The three angles are 84°, 52°, 44°.
Answer:
see explanation
Step-by-step explanation:
Using Pythagoras' identity
The square on the hypotenuse of a right triangle is equal to the sum of the squares on the other 2 sides.
Consider the right triangle on the right and calculate n
n² + 2² = 3²
n² + 4 = 9 ( subtract 4 from both sides )
n² = 5 ( take the square root of both sides )
n =
If the triangle on the left is right then the square of the longest side must equal the sum of the squares on the other 2 sides.
The longest side is n = ⇒ n² = ( )² = 5 and
( )² + ( )² = 2 + 3 = 5
Hence D is a right angle
Answer:
Step-by-step explanation:
Start with the given inequality and solve it for x.
First, add 4 to both sides: 5x > 25
Next, divide both sides by 5: x > 5
The solution (set) is x > 5.
Answer:
B: The discriminant is equal to zero which means it has one real number solution
Step-by-step explanation: