All the angles of a triangle add up to 180 degrees.
30+39+<4= 180
69+<4= 180
Subtract 69 on both sides.
<4= 111 degrees
<1 and <4 are supplementary and adjacent. They equal 180 degrees as well.
111+<1= 180
<1= 69 degrees
I hope this helps!
<em>~kaikers</em>
Answer:
can u attach the worksheet
Step-by-step explanation:
Answer:
The answer is D I hope it true
Step-by-step explanation:
Answer: -1+6y+7x
To simplify expressions, you have to be able to combine like terms (eg. 3x and 2x to get 5x). Since there are none in this expression, and you can't combine y and x, this expression can't be simplified.
*If it helps, think of x and y as different types of candy... ;3
For example, you can't combine 12 Skittles (x) and 4 Reese's (y), because they aren't the same. So, you'd write that you have 12 Skittles and 4 Reese's.
Hope this helps,
LaciaMelodii :)
Sofia is correct because if you replace x with 7 you multiply 3 and 7 and get 21 then add 4 and your final answer will be 25
