Answer:
4x - 2
Step-by-step explanation:
The perimeter of a shape is when you add up all the sides.
-So, you can write it as: 2x - 5 + 5 - x + 3x - 2.
-Group the terms together to get: 2x + 3x - x - 5 + 5 - 2
-Combine like terms to get: 4x - 2
Hope this helps! :)
Answer:

Step-by-step explanation:
we have
----> equation A
---> equation B
substitute equation B in equation A

----> equation C
we have

substitute in the equation C
solve for W

You have to find how many times 40 (the denominator) goes into 120 (attempts). That's 3, so you take the numerator (17) and multiply it by that same number. And 17 times 3 is 51.
Answer:
x = - 4, x = - 3
Step-by-step explanation:
To find the zeros equate f(x) to zero, that is
x² + 7x + 12 = 0
To factorise the quadratic
Consider the factors of the constant term (+ 12) which sum to give the coefficient of the x- term (+ 7)
The factors are + 4 and + 3, since
4 × 3 = 12 and 4 + 3 = 7, hence
(x + 4)(x + 3) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 4 = 0 ⇒ x = - 4
x + 3 = 0 ⇒ x = - 3