Answer:
The value of x = 9
Step-by-step explanation:
Given the angles of the triangle
We know that the sum of angles of a triangle is 180°.
Therefore,
(13x+2)° + (5x-7)° + (3x-4)° = 180°
13x+2 + 5x-7 + 3x-4 = 180°
21x + 2 - 11 = 180°
21x - 9 = 180°
21x = 180° + 9
21x = 189
divide both side sby 21
21x/21 = 189/21
x = 9
Therefore, the value of x = 9
Answer:
The answer is the first one
Step-by-step explanation:
A (milligrams) - 25 milligrams = C milligrams
This is different than the usual questions we get.
We're given a set of some multiples of 36:

We're asked how many of those are perfect squares.
36 is of course already a perfect square, so for the product to be a perfect square the other factor must be as well. So this is equivalent to:
How many perfect squares are there between 2 and 35?
Just listing them, there's 
Answer: 4 squares