Answer:
j-4 is how you show 4 less than a number j
It will be 89 because it increases by 4 each time
Cross multiply...
Thus,
x(x+4)=(x+12)(x+8)
expand...
x^2+4x=x^2+8x+12x+96
Simply both sides of the equation.
x^2+4x=x^2+20x+96
simply further by adding ask like terms...
-16x=96
Solve for x by making x the subject.
therefore
x=-6.
1st one is 0
2nd one is -3
3rd one is -2
4th one is 5
Combine like terms, isolate the variable, and make the slope of the variable 1 to find all the answers.
Answer:
option 4. 17
Step-by-step explanation:
<u>sum of angles = exterior angle x n</u>
360° = 21.2° n
n = 360 / 21.2
n = 17
