(2-7i)(-1+4i)
2x-1=-2
2x4i= 8i
-7ix-1=7i
-7ix4i=-28i^2
so the answer is
-2+8i+7i+28i^2
=28i^2+15i-2
:)
Answer:
scale factor: 1/3
Step-by-step explanation:
if you count the unit on the side of triangle ABC it 6 units going up and down and 3 units going left to right. Triangle A'B'C' ends up 2 units up and down and 1 unit left to right so you basically divide by 3, but since its going from bigger to smaller its 1/3
Answer:
weight of pears sold = 4.08 kg
Step-by-step explanation:
total weight of apples and pears = 6.8 kg
2/5 of this weight = apples
this means that if the total weight (6.8 kg) were divided into 5 parts, apples take 2 out of the 5 parts:
∴ weight of apples = 2/5 of total weight
weight of apples 2/5 × 6.8 = 2.72 kg
Therefore apples weigh a total of 2.72 kg
Therefore, since weight of apples + weight of pears = 6.8 kg
2.72 + weight of pears = 6.8
weight of pears = 6.8 - 2.72 = 4.08 kg
Answer: dividing by 10000
Step-by-step explanation: because 10000 has 4 zeros