Answer:
2 1/2 (2.5)
Step-by-step explanation:
Multiply all the numbers then divide by 1/2
7.8456 x 10^(-4)
this means you move the decimal place to the left 4 places to get the actual value
X+20+16=90
x=54
54+20+16=90
There’s a right angle and it’s marked as 90 degrees.
