5<em>x</em>² - 7<em>x</em> + 2 = 0
5(<em>x</em>² - 7/5 <em>x</em>) + 2 = 0
5(<em>x</em>² - 7/5 <em>x</em> + 49/100 - 49/100) + 2 = 0
5(<em>x</em>² - 2 • 7/10 <em>x</em> + (7/10)²) - 49/20 + 2 = 0
5(<em>x</em> - 7/10)² - 9/20 = 0
5(<em>x</em> - 7/10)² = 9/20
(<em>x</em> - 7/10)² = 9/100
<em>x</em> - 7/10 = ± √(9/100)
<em>x</em> - 7/10 = ± 3/10
<em>x</em> = 7/10 ± 3/10
<em>x</em> = 10/10 = 1 or <em>x</em> = 4/10 = 2/5
The slope of a line perpendicular to the line -3x + 6y = -15 is 2
1.a) 5
b)8
2.a) 30, 60, 90
b) 56, 112, 168
Answer:
See the python code in the description below
Step-by-step explanation:
A Python program that calculates how many seconds in a week
Step one:
One Minute = 60 Seconds
One Hour = 60 Minutes
One Day = 24 Hours
One Week = 7 Days
Step two:
#Initialize the number of seconds in a week
number_of_weeks= int(input("enter the number of weeks here: "))
number_of_seconds_in_a_week=60*60*24*7*number_of_weeks
print("the number of seconds in", number_of_weeks, "week(s)", "is", number_of_seconds_in_a_week )