He wants to believe that he can change his circumstances by being in the right place at the right time.
Answer:
900 million.
Step-by-step explanation:
It's estimated that there are 900 million dogs in the world, as of 2018.
To find a percentage of a number, you divide by that number.
So to find what percent of 150 162 is, you divide 162 by 150
162 ÷ 150 = 1.08
Now, to find the percentage, we take the decimal and move the point two places to the right.
1.08 = 108%
162 is 108% of 150.
Answer:
![\{x=\frac{19-\sqrt{409} }{2}\ , \ x=\frac{19+\sqrt{409} }{2}\}](https://tex.z-dn.net/?f=%5C%7Bx%3D%5Cfrac%7B19-%5Csqrt%7B409%7D%20%7D%7B2%7D%5C%20%2C%20%5C%20%20x%3D%5Cfrac%7B19%2B%5Csqrt%7B409%7D%20%7D%7B2%7D%5C%7D)
Step-by-step explanation:
x² = 19x + 12
⇔ x² - 19x - 12 = 0
Calculating the discriminant :
b² - 4ac = (-19)² - 4×1×(-12) = 409
The discriminant is positive ,then the equation has two solutions.
![x=\frac{19-\sqrt{409} }{2} \ \ or\ \ x=\frac{19+\sqrt{409} }{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B19-%5Csqrt%7B409%7D%20%7D%7B2%7D%20%5C%20%5C%20or%5C%20%5C%20x%3D%5Cfrac%7B19%2B%5Csqrt%7B409%7D%20%7D%7B2%7D)