Answer:
<em>x = 7.5 cm </em>
Step-by-step explanation:
ΔBCA ~ ΔECD ⇒ the corresponding sides are proportional.
= 
AC = 4 + 6 = 10 cm
= 
⇔ 10x = 6(x + 5) ⇒ <em>x = 7.5 cm</em>
Answer:
5/8+7/8=12/8 reduces to 1 1/2
2/3-1/2=1/6
Step-by-step explanation:
Answer:
(x - 4)(x + 3)
Step-by-step explanation:
Given
x² - x - 12
Consider the factors of the constant term (- 12) which sum to give the coefficient of the x- term (- 1)
The factors are - 4 and + 3, since
- 4 × + 3 = - 12 and - 4 + 3 = - 1, then
x² - x - 12 = (x - 4)(x + 3) ← in factored form
