Answer:
d is equal to or greater than 9
Step-by-step explanation:
Subract thirteen from both sides of the equation.
angles in a triangle add up to 180
so x = 180 - ( 70 + 90 ) = 20
this is because the two other angles in the both of the identical triangles are 70 and 90
Answer:
B =

Step-by-step explanation:
In this type of questions the answers are required in the

form.
First of all, the equations in question must be arranged properly

Then you divide.

Answer

Answer:
should be 15.
Step-by-step explanation: