Answer:

Step-by-step explanation:
Use cosine ratio.
3x-15=51
3x=36
X= 12
Thus the number is 12
Answer:-3
Step-by-step explanation:
its just adding and subtracting
Answer:
2.53800027 ^9
Step-by-step explanation:
the product of both numbers is this.
just add both of them together. If im wrong, i will tell you another answer.