Answer:
B) -9c+28
Step-by-step explanation:
5c-7(2c-4)
5c-14c+28
-9c+28
Answer:
C because
Step-by-step explanation:
Answer: -5-13i
Work Shown:
(1-4i) - (6+9i) = 1-4i-6-9i
(1-4i) - (6+9i) = (1-6) + (-4i-9i)
(1-4i) - (6+9i ) = -5 - 13i
Answer:
150
Step-by-step explanation:
mark brainliest pls
Here's our data:
15 questions total
Total number of points: 100
Spelling questions are worth 5 and represented by x
Vocab questions are worth 10 and represented by y
Therefore:
x+y=15
5x + 10y= 100
So:
x+y=15
x= 15-y
5x +10y =100
5(15 -y) +10y =100
75 -5y +10y =100
75 +5y = 100
5y=25
y=5
x +y=15
x+5=15
x=10
There are 10 spelling questions and 5 vocab questions