Answer:
A
Step-by-step explanation:
Equation
2x + 3x + 8 + 7x - 2 = 90
Solution
Combine like terms on the left
12x + 6 = 90 Subtract 6 on both sides
12x = 90 - 6
12x = 84 Divide by 12
x = 84/12
x = 7
Sorry if you get this wrong but I feel like it’s Not Similar.
Answer:
11
Step-by-step explanation:
Put 3 where x is and do the arithmetic.
g(x) = 3x +2
g(3) = 3·3 +2 = 9 +2
g(3) = 11
The pythagroean theorem says a² + b² = c² and we're given a and c in this case
12² + b² = 13²
144 + b² = 169; subtract 144 from both sides
b² = 25; square root both sides
b = 5 so the length of side AB is C) 5