-7n+2 -(2n-1)= -7n+2-2n++1
-9n+3
d is correct
Indpendent events.
Probability of a child be a boy: 1/2
Probability of a child be a girls: 1/2
Combined probability of the event boy/girl/boy/girl = 1/2*1/2*1/2*1/2=1/16=0.0625
Answer:
D) 15.5
Step-by-step explanation:
median is the middle line inside the 'box'
The polynomial is:
12 x³ - 6 x² + 8 x - 4
Lucas:
( 12 x³ + 8 x ) + ( - 6 x² - 4 ) = 4 x ( 3 x² + 2 ) - 2 ( 3 x² + 2 ) =
= ( 3 x² + 2 ) ( 4 x - 2 ) = 2 ( 3 x² + 2 ) ( 2 x - 1 )
Erick:
( 12 x³ - 6 x² ) + ( 8 x - 4 ) = 6 x² ( 2 x - 1 ) + 4 ( 2 x - 1 ) =
= ( 2 x - 1 ) ( 6 x² + 4 ) = 2 ( 3 x² + 2 ) ( 2 x - 1 )
Answer:
Both students are correct. Each grouping leads to the same result.