Length times width so that would be 21
Number 4. will be a. because if you do 7*9=63*10=630.
The answer to this question that you have me would be 5|x|-7=7 will equal to x=2
The answer is 145 divided by tan 65 degrees.
Since the equation for tangent is opposite/adjacent, you can just plug the numbers in.
tan(65)=145/x (x being the height that you are trying to find)
tan(65) * x = 145
Then divide tan(65) to isolate the x and you get:
145/tan(65)
Hope this helps!
I don't think that you can. Integers are either positive or negative real numbers without decimals, so there isn't anything to simplify.
