Question

3a+4b+7c and4a-6b-7c​

Answer 1

Answer:

-3

Step-by-step explanation:

3+4=7ab

7+7 =14c

14-4=10a

10-6=4a

4-7=-3c

Answer 2

Answer:

the answer of your speed question is..

first we will convert time minute to second =2x60

so it will be 120 secs

so speed =

$\frac{distace}{time}$

so

$\frac{3000}{120}$

= 25

speed is 25m/s