Answer:
6
Step-by-step explanation:
1. get rid of parentheses: 12x -6 = 10x +6
2. group like terns together: 12x-10x = 6+6
3. simplify: 2x = 12
4. divide both sides by 2: x=6
Answer:
D
Step-by-step explanation:
Firstly,you must divide (6,2) to (x¹y¹).After that,you must divide (10,3) to (x²y²).Then you must substract (y²-y¹,x²-x¹).It will be like this (3-2,10-6).So the correct answer is 1,4 (D).Hope you will understand!
Answer:
a = -1, b = -2.5
Step-by-step explanation:
Rule for the dilation of a vector 
by a scale factor of k is,
(x, y) → (kx, ky)
BY using this rule for a vector 
by a scale factor of 2.5
→ 
Followed by the rotation by 90° Or 
radians,
Rule for rotation of a vector by 90° is,
(x, y) → (-y, x)
By this rule vector will become,
→ 
If we represent this vector by 
,
Then a = -1 and b = -2.5 will be the answer.
Use "PEMDAS" (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction) to know what to do first.
(15 + 6)^{2} - (8 - 5)^{2} Solve the insides of the parentheses
21^{2} - 3^{2} Solve the exponents (21 x 21) and (3 x 3)
441 - 9 Subtract
432
