Answer:
combine -3-1

if you want to solve for x then you would move the -14 to the left buy adding 14 to both sides.

your equation there will be

then you will divide -2 on both sides

finally x will equal

Answer:The answer can be calculated by doing the following
Steps;
Step-by-step explanation:
Answer:
2 hr and 58 min
Step-by-step explanation:
This problem is represented in the Figure below. So, we can find the components of each vector as follows:


Therefore:

So:

Finally, the magnitude is:

For x^2-49
this is a diffarence of two perfect squares. I suggest that this is memorised.
a^2-b^2=(a-b)(a+b)
so x^2-7^2=(x-7)(x+7)
so to solve x^2+x-56 you want to find out what two numbers add to 1 and multiply to make -56
since -56 is negative we know that the two number are difarent signs so that eliminatess answers B and D.
if we try answer C -8+7=-1 so the answer is not C because we want +1 not -1
then we see that 8+(-7)=1 so the answer is A