Step-by-step explanation:
Given that,
A quadratic equation,
2x(x + 1.5) = -1
We need to solve the quadratic equation. Firstly we need to simplify the above equation to form it as
.
So,

Here, a = 2, b = 3 and c = 1
The roots of the given equation can be given by :

Putting all the values we get :

So, the roots of the given equation is -1/2 and -1.
B x H divided by 2 i think
Answer:
the 4
Step-by-step explanation:
Answer: what’s the answer
Step-by-step explanation:
Ni : Zn: Cu = 7:2:9 =7x : 2x : 9x
7x+2x+9x = 3.8
18x=3.8
x=3.8/18=1.9/9≈0.21
Ni: 7x=7*0.21=1.47 ≈1.5 kg
Zn: 2x=2*0.21=0.42≈0.4 kg
Cu: 9x=9*0.21=1.89 ≈1.9 kg
Check 1.5+0.4+1.9 =3.8 True