Answer:
12
Step-by-step explanation:
If the perimeter is 58,
take 17(2) for booth sides.
Which you will get 34.
58-34=24
Now you know that the remainder is the two vertical sides.
24/2=12
BC=12
B
Refer to the picture that given
It would be 3 times the sum of x and seven plus 10. This is because first you would would add 7+x (7x) and multiply it by 3. And then add on 10.
130°
p and the 50° angle form a straight line/straight angle, meaning they are supplementary.
Supplementary angles add to 180°.
p+50=180
p=130
2 2/9 i think
