Answer:

Step-by-step explanation:
The standard form of a complex number:


Answer:160 miles
Explanation:
You can work out this type of question by using the 'unitary' method, which means finding out how much for ONE.
If you set out the steps with short sentences it will be clearer.
On 15 gallons, a car can travel 400 miles÷15↓
On 1 gallon, a car can travel 400÷15=262
miles
Once you know the distance travelled on 1 gallon of fuel, you can work out the distance travelled for any number of gallons.
On 6 gallons the car can travel
6
×
26
2
3
miles.
(6 times further than on 1 gallon)
6
×
80
3
=
160
miles
The answer to this question is sqrt(2)/2. Invoke the unit circle to derive this expression, or use special triangles and reference triangles.
Length of the segment is 1.5 cm (since the picture is small)
The scale is 1.5 : 1 or 1.5/1