Answer:
40x-24
3b(6c-3a+c)
Step-by-step explanation:
For the first one use distributive property and multiply each term by 8.
For the second one find a common factor which is 3b and divide all terms by that number.
Answer:
x=1+√13 or x=1−√13
Step-by-step explanation:
Step 1: Subtract 39 from both sides.
5x2−10x−21−39=39−39
5x2−10x−60=0
For this equation: a=5, b=-10, c=-60
5x2+−10x+−60=0
Step 2: Use quadratic formula with a=5, b=-10, c=-60.
x=
−b±√b2−4ac
2a
x=
−(−10)±√(−10)2−4(5)(−60)
2(5)
x=
10±√1300
10
x=1+√13 or x=1−√13
<h3>
Answer:</h3>
Number of students who chose history as favorite subject = 25
Number of students who chose music as favorite subject = 60
<h3>
Step-by-step explanation:</h3>
Let the total number of students be 's'.
Number of students who chose history as favorite subject =
of (Total number of students) =
= 
Number of students who chose history as favorite subject = 
Number of students who chose music as favorite subjects =
of (Total number of students) =
= 
Number of students who chose music as favorite subjects = 
Number of students who chose neither history nor music as favorite subject = 65
Total number of students = (Number of students who chose history as favorite subject) + (Number of students who chose music as favorite subject) + (Number of students who chose neither history nor music as favorite subject)











Number of students who chose history as favorite subject = 
Number of students who chose history as favorite subject = 25
Number of students who chose music as favorite subject = 
Number of students who chose music as favorite subject = 60
Slop intercept form, others don’t exist for this equation.
Answer:
the answer is B, x=7
Step-by-step explanation:
heron's area formula:

