Answer:
36
Step-by-step explanation:
Using the angle addition postulate
angle 1+angle 2+angle 3=180
Angle 2 is 90 degrees,
Angle 1 is 2x degrees
Angle 3 is 3x degrees
Plug this into equation
Plug 18 into 2x
Answer:
The Answer is: The Number is 4
Step-by-step explanation:
Let n = the number.
Eight times a number minus 4 equals 8 plus 5 times the number.
8n - 4 = 8 + 5n
3n = 12
n = 4, the number is 4.
Proof:
8(4) - 4 = 8 + 5(4)
32 - 4 = 8 + 20
28 = 28
Hope this helps! Have an Awesome Day!! :-)
There is no equation. There is just a polynomial shown
Answer:
30
Step-by-step explanation:
180 = 90 + x + 20 + x + 10
90 = 2x + 30
x = 30
Answer:
Step-by-step explanation:
Note*
To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations. To evaluate, substitute 3 for x in the expression, and then simplify.
