I do not know how to show the working out but its 4+6+6
If you know the measurements of 2 sides not the height , you can apply Pythagorean theorem to find the height. Square root of the sum of the squared sides
Answer:
x=40°
Step-by-step explanation:
(x-5)+(x+15)=90°
2x+10=90
2x=80
x=40°
Answer:
A
Step-by-step explanation:
3 + 19 = 22
4 + 19 = 23
5 + 19 = 24
6 + 19 = 25
All sums are less than 28
