Answer:$2
Step-by-step explanation:
5 notebooks cost $4 each
5*$4=$20
Jada pays the cashier $40 and gets $8 back
So in order to figure out how much was paid you take
$40-$8=$32
Then to figure out how much each pen cost I take
$32-$20=$12
So there was 6 pens that were bought and to get the total per each pen
$12/6=$2 each per pen
Answer:
Pls help me in this question
Step-by-step explanation:
Pls help me in this question
Answer:
1=66
2=114
3=66
4=144
Step-by-step explanation:
angle 4 is equal to angle 2 since they are vertical angles and to get angles 1 and 3 you have to do 180-114 since it is supplementary angles
Y + 12 = 7 =
y = -12 + 7 =
y = - 5
Answer:
a) 13440
b) 4200
Step-by-step explanation:
a) The six people are different people. The possible combinations of couples from which the people are chosen is 10C6
For each choice of different couples either male or female, we have 2^6 possible outcomes.
So we have
(10C6) * 2^6
= (10! / (10-6)!6!) * 2^6
= (10! / 4!6!) * 2^6
= 210 * 2^6
= 13440
b) if the group has to have three men and three women, we choose the six different couples in 10C6 ways. From these six, there are 6C3 possibilities to choose from which couple to pick Female. From the rest we choose male.
We then have
(10C6)(6C3)
= (10!/ (10-6)!6!) * (6!/(6-3)!3!)
= (10!/4!6!) * (6!/3!3!)
= 210 * 20
= 4200