Answer:(9y-7)(9y+7)
Step-by-step explanation:
81y^2-49
=(9y)^2-(7)^2
=(9y-7)(9y+7)
What should be my first step when subtracting integers is to .A.add the opposite.
<h3>What are the
step to follow in order to subtract integers?</h3>
To perform this operation first number must be kept as the minuend, and then then change the operation from subtraction to addition.
Then proceed with the regular addition of integers, hence What should be my first step when subtracting integers is to add the opposite.
Read more on integers here:
brainly.com/question/17695139
#SPJ1
Answer:
B. 5.00
Step-by-step explanation:
:)
Answer:
c) (40+60+25)/200 or 63%
Step-by-step explanation:
n= 200 students
Did Well on the Midterm and Studied for the Midterm = 75
Did Well on the Midterm and Went Partying = 40
Did Poorly on the Midterm and Studied for the Midterm = 25
Did Poorly on the Midterm and Went Partying = 60
The number of students that did poorly on the midterm or went partying the weekend before the midterm is given by the sum of all students who did poorly to all students who went partying minus the number of students who did Poorly on the Midterm and Went Partying:

The probability that a randomly selected student did poorly on the midterm or went partying the weekend before the midterm is given by:
