Answer:
4th one its negative,linear association
Step-by-step explanation:
Number 1: (-1+2i)+(6-9i)

Number 2: (3-3i)-(4+7i)

Number 3: (-5+2i)+(-2+8i)

Answer:
<h2><em><u>
h = 13</u></em></h2>
Step-by-step explanation:
Solve for h.
h - 6 = 7
h = 7 + 6
h = 13
------------------
check
13 - 6 = 7
7 = 7
the answer is good
Answer:
(a)Number of students
(b)5 Students
(c)8 Students
Step-by-step explanation:
From the supplied information

(a)The bars represents the number of students who practiced for that particular duration.
(b)Students who spend 3 or more hours practicing
From the above table,
Number of students who spend 3 or more hours practicing=4+1
=5 Students
According to the histogram, 5 students spend 3 or more hours practicing.
(c)Students who spend fewer than 2 hours practicing
From the above table,
Number of students who spend fewer than 2 hours practicing=3+5
=8 Students
According to the histogram, 8 students spend fewer than 2 hours practicing.