Answer:
x^2 - 49= (x+7) (x -7)
Step-by-step explanation:
To find the area of this figure, there is two choices
1. cut it into 3 rectangles.
2.find the missing rectangle in the middle......
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find the missing area in the middle, 12* 23 = 276
the area of the whole figure 31*69-276=1863m²
The angles must be acute and all the measured angles must be different.
<h3>What is a triangle?</h3>
This a shape with 3 sides and angke
If in ΔNOP, OP = 7, PN = 13, and NO = 19, then the measure of the angles must be different as well;
Hence the statement that must be true about the angles is that the angles must be acute and all the measured angles must be different. The given triangle must also be a scalene triangle
Learn more on triangles here: brainly.com/question/2938476
