Answer:
7/15
Step-by-step explanation:
turn 2/5 to have 15 as the denominator (6/15)
then do 13/15-6/15
answer is 7/15
Answer:
(a+2)(b+2) = 4
Step-by-step explanation:
We are given the following quadratic equation:

Let a a and b be the solution of the given quadratic equation.
Solving the equation:

We have to find the value of (a+2)(b+2).
Putting the values:

Answer:
like, at least 2
Step-by-step explanation:
math hard.
Answer:
<h2>The Possible range for x is : ]8 , 18[</h2>
Step-by-step explanation:
To can draw this triangle if:
4x - (2x - 6) < 42 < 4x + (2x - 6)
solve inequality 1 :
4x - (2x - 6) < 42 ⇔ 2x + 6 < 42 ⇔ 2x < 36 ⇔ x < 18 (1)
Solve inequality 2 :
42 < 4x + (2x - 6) ⇔ 42 < 6x - 6 ⇔ 48 < 6x ⇔ 8 < x (2)
from (1) and (2) we deduce that : 8 < x < 18