If I understand the question correctly, dots are written around the symbol to represent valence electrons, so 7 dots would be in the elements dot diagram. The element is in Group 17 with 4 other elements.
In a quadrilateral the angles should add up to 360 degrees.
360-80-90-103= 87
So 87 degrees
Let's solve for x.
−x+9y=−5
Step 1: Add -9y to both sides.
−x+9y+−9y=−5+−9y
−x=−9y−5
Step 2: Divide both sides by -1.
−x ÷ −1 = −9y−5 ÷ −1
x=9y+5
THE ANSWER FOR THE OTHER EQUATION: (x-5y=1)
Let's solve for x.
x−5y=1
Step 1: Add 5y to both sides.
x−5y+5y=1+5y
x=5y+1
Answer:
x=5y+1
I hope this helped I was a little confused on what your problem meant...so if this is not what you asked for just lmk so I can fix it for you :)
Answer:
Step-by-step explanation:
Step 1: Simplify both sides of the equation
(5x+3x)+(-32+12)=180
8x-20=180
Step 2: Add 20 to both sides.
8x-20+20= 180+20
8x= 200
Step 3: Divide both sides by 8
8x/8= 200/8
x= 25
Answer: 343.5
Step-by-step explanation: multiply 15 * 17 and you get 255 then divide that by 2 and you get 127.5.
Next you multiply 8 by 27 (which is 216)
Now add 127.5 and 216 and you get 343.5