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slega [8]
3 years ago
9

The measure of three angles of a triangle are (2×), (3×) and (×+60) what is the value of x ?

Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0
Since the sum of the angles of a triangle = 180°

Then  (2x)º + (x + 60)º + (3x)º  = 180°
                               (6x)° + 60° = 180°
                                         (6x)° = 180° - 60°
                                             x   =  120° ÷ 6
                                        ∴   x   =  20
                          
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Riko wants to find the distance between the points (−2, −3) and (2, −5). His work is shown. StartAbsoluteValue negative 3 EndAbs
swat32

Answer:

<em>Riko is wrong because she uses the wrong formula.</em>

Step-by-step explanation:

Given the coordinate points (-2, -3) and (2, -5)

We are to find the distance between the two points

Using the formula:

D = √(x2-x1)²+(y2-y1)²

From the coordinates x1 = -2, y1 = -3, x2 = 2 and y2 = -5

Substitute

D = √(2-(-2))²+(-5-(-3))²

D= √(4)²+(-2)²

D = √16 + 4

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D = √4*√5

D = 2√5

<em>This shows that Riko is wrong because she uses the wrong formula.</em>

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