Given:
15 students
average grade: 80 for 14 students
average grade: 81 for 15 students
80 * 14 = 1120
81 * 15 = 1215
1215 - 1120 = 95
Payton's score on the test is 95.
First if b=7 then multiply 5x7=35. then if v=4 multiply 4x8=32. Finally, add 35+32 to get 67
the cost is $67
(-6 - 5i)(1 - 3i)
you foil this like you would any other set of binomials, so you'll multiply negative 6 and 1, then -5i and 1, etc:
-6 - 5i + 9i - 15
5i and 3i simplify to -15 because 5*3 is 15, and i*i = -1
then you just add like terms:
-21 - 5i + 9i
-21 + 4i is your answer.
Answer:
15
Step-by-step explanation:
jk
Answer:
yes
Step-by-step explanation:
The product of the slopes of perpendicular lines = - 1
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = x - 8 ← is in slope intercept form
with slope =
y = - x + 3 ← is in slope- intercept form
with slope = -
Now
× - = - 1
Hence the 2 lines are perpendicular