Answer:
x=+5
Step-by-step explanation:
3(x+2)-2x-7=-(-5x-1)-2(x+6)
We move all terms to the left:
3(x+2)-2x-7-(-(-5x-1)-2(x+6))=0
We add all the numbers together, and all the variables
-2x+3(x+2)-(-(-5x-1)-2(x+6))-7=0
We multiply parentheses
-2x+3x-(-(-5x-1)-2(x+6))+6-7=0
We calculate terms in parentheses: -(-(-5x-1)-2(x+6)), so:
-(-5x-1)-2(x+6)
We multiply parentheses
-(-5x-1)-2x-12
We get rid of parentheses
5x-2x+1-12
We add all the numbers together, and all the variables
3x-11
Back to the equation:
-(3x-11)
We add all the numbers together, and all the variables
x-(3x-11)-1=0
We get rid of parentheses
x-3x+11-1=0
We add all the numbers together, and all the variables
-2x+10=0
We move all terms containing x to the left, all other terms to the right
-2x=-10
x=-10/-2
x=+5
We know that the sum of all the exterior angles will add up to 360°.
We can solve this using an expression:
360/n
n = the number of sides (in the problem, we are given 19 sides)
Solve with the given value:
360/19
18.947368
Round to the nearest tenth:
18.947368 → 18.9
Therefore, the answer is 18.9
Best of Luck!
Answer:
w = 10 cm
Step-by-step explanation:
The area of the triangle is 24 sq. cm.
24 * 5 = 105
120/12 = 10
Answer:
B
Step-by-step explanation:
B