$x_1=x_2 \Rightarrow \Delta=0\\
\Delta=12^2-4\cdot(3k-2)\cdot3(k+1)\\
\Delta=144-(36k-24)(k+1)\\
\Delta=144-36k^2-36k+24k+24\\
\Delta=-36k^2-12k+168\\
-36k^2-12k+168=0\\
-3k^2-k+14=0\\
-3k^2+6k-7k+14=0\\
-3k(k-2)-7(k-2)=0\\
-(3k+7)(k-2)=0\\
k=-\frac{7}{3} \vee k=2$

5 0

3 years ago

What is comparative<br> stem and leaf plot

Rom4ik [11]

A stemplot is similar to a histogram — it is a tool to help you visualise the shape of a distribution. They have been a common tool for displaying data since the 1970s. With a regular stemplot, there is one “stem” to the left and one “leaf<span>” to the right.</span>

8 0

3 years ago

Garrett starts his homework at 5:20 he spends 20 minutes or rear and 15 minutes on math at whst time does garrett finish his hom

Whitepunk [10]

The answer is D because 5:20 + 20 + 15 is 5:55

7 0

3 years ago