200 has the same value as 20 tens beucase 20*10=200
Answer with Step-by-step explanation:
We are given that


We have to find the speed of river's current and the direction of current flowing.

Speed of river's current=
Speed of river's current=
Speed of river's current=
By using the formula

Direction of current flowing,

The angle lies in third quadrant therefore

Answer:

Step-by-step explanation:
First, make them on one side of the formula in the form of
which is 
Next, insert the corresponding number in the quadratic formula,
, and the answer can be calculated.
Answer:
0.325 cm²
Step-by-step explanation:
A =
bh =
*1.3*0.5 = 0.325 cm²