Answer:
x = - 3
Step-by-step explanation:
To find the zeros set f(x) = 0, that is
(x + 3)(x - 7)(x + 5) = 0
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 7 = 0 ⇒ x = 7
x + 5 = 0 ⇒ x = - 5
Answer:
40 cm
Step-by-step explanation:
Using the conversion
1 litre = 1000 cm³, then
40 litres = 40 × 1000 = 40000 cm³
The volume ( V) of a cuboid is
V = lbh ( divide both sides by bh )
l = 
= 
= 
= 40 cm
No whole numbers do as if you look at the factors pairs of 45 none of them add to 17:
1, 45 = 46
3, 15 = 18
5, 9 = 14
The two numbers that add to 17 but multiply to 45 are can be calculated using the quadratic formula and are actually 13.72 and 3.28
Answer:
Step-by-step explanation:
=> 3(5k + 2) + 5 = 3k - 1
=> 15k + 6 + 5 = 3k - 1
=> 15k + 11 - 3k + 1
=> 12k + 12
<u>Hence, correct answer is 12k + 12.</u>
