${x}^{2} + 5 = 7 \\ {x}^{2} = 7 - 5 \\ {x}^{2} = 2 \\ \\( {x}^{2} + 5)k = 21 \\ (2 + 5)k = 21 \\ (7)k = 21 \\ 7k = 21 \\ \frac{7k}{7} = \frac{21}{7} \\ k = 3$

8 0

3 years ago

WHO WANTS BRAINLIEST THEN ANSWER THIS QUESTION

elena-14-01-66 [18.8K]

Answer:

Step-by-step explanation:

cyril was completing a uniform velocity at first and then had a slight decrease in its speed..and then again..increased its velocity all through the journey...

gertie had a uniform speed till 17 cm/s and the had a decrease in its velocity ... and finally got back to its initial velocity...

harold was increasing its velocity from rest and then took rest after 15 metres and then again moved with an increasing velocity after 40 seconds

7 0

3 years ago