Okay, so
a=2b+11
<span>a+b = 2(a-b) </span>
<span>now solve </span>
<span>a+b = 2a-2b </span>
<span>3b = a, put that into the 1st equation: </span>
<span>3b = 2b+11 </span>
<span>b=11 </span>
<span>a = 2(11) +11 = 33 </span>
<span>check in the 2nd equation: </span>
<span>33+11 = 2(33-11) </span>
<span>44 = 2(22) </span>
<span>44 = 44</span>
Answer:
x = 8
Step-by-step explanation:
The sum of the exterior angles of a polygon = 360°
Sum the exterior angles and equate to 360
62 + 66 + 77 + 59 + 12x = 360, that is
264 + 12x = 360 ( subtract 264 from both sides )
12x = 96 ( divide both sides by 12 )
x = 8
Answer:
Step-by-step explanation:
Bo, 4.23 is not bigger than 4.3
Answer:
If x is an integer, then for values of x ≤ 0 would -x be positive.
General Formulas and Concepts:
<u>Math</u>
Step-by-step explanation:
We know that integers comprise of the number line from -∞ to ∞. We can have numbers like -3, -2, -1, 0, 1, 2 ,3.
If we say that x is an integer, and that -x must be positive, then that means the integer x must be negative, because a negative times a negative is a positive.
∴ x can only be negative integers, thus giving us x ≤ 0.
