Answer:
0.88c and 22/25 c
Step-by-step explanation:
Because 12\%12%12, percent means 121212 per hundred, we can write it in equivalent forms.
\begin{aligned} 12\%&=\dfrac{12}{100}\\\\ &=\dfrac{3}{25}\\\\ &=0.12 \end{aligned}
12%
=
100
12
25
3
=0.12
Previous crime rate = c incidents per 1,000 people
Reduction in crime rate after batman brought the joker to justice = 12%
Hence, new crime rate (per 1,000 people) would be = c - 12%×c
⇒ New crime rate (per 1,000 people) would be = c - 0.12×c
⇒ New crime rate (per 1,000 people) would be = 0.88×c
Hence, now the crime rate is 0.88×c per 1,000 people.
3:2
The ratio of boys to girls will be 12:8
But, this can be simplified, since both numbers are divisible by 4.
12/4 = 3
8/4 = 2
So, the simplified ratio of boys to girls is 3:2
Given:
The two points on the line are and .
The slope of the line joining two points and is given as:
Here,
∴
Equation of line with a point and slope is given as:
Plug in -2 for , 3 for and -7 for . This gives,
Therefore, the equation of the line in vertex form is .