Answer:
The value of x is 9
Step-by-step explanation:
from the diagram it shows that it is a right-angled triangle.
so, the sum of angles in a right angled triangle is 90 degrees.
i.e 7x + 3x =90
10x=90
divide both sides by 10
x= 9
to check if your answer is correct, from 7x + 3x =90
we have,
7(9) + 3(9)= 90
63 + 27 =90
90=90
