Answer:

Step-by-step explanation:
Recall that the quadratic formula gives you the pattern to follow in order to find the solutions to a quadratic equation of the form: 
It tells us that we need to use the parameters
and
in the following formula in order to get the answers for the x-values that solve it:

so, in our case,
,
, and 
then, replacing these values in the formula, we obtain:

Which looks like the third expression you are listing (although it is a little hard to read)
Answer: 2
Step-by-step explanation:
Answer:
R 694.4
Explanation:
simple interest =
→
→ R 134.4
where p refers to principal, r refers to rate, t refers to time.
total money:
invested money + simple interest
R 134.4 + R 560 → R 694.4
Its 6 I think hope this helps
Check the picture below
area of a triangle is 1/2 bh