It is b i think hope this helps
Answer:
the answer is in the picture
Step-by-step explanation:
Answer:
d. 20
Step-by-step explanation:
The given question implies 5 permutation 2, i.e 
.
But,
= 
So that for , n = 5 and r = 2.
= 
= 
= 
Cancel out 3 and 2 with respect to the numerator and denominator.
= 5 * 4
= 20
Therefore,
= 20
So that the correct option is D.
Answer:
The y axis
Step-by-step explanation:
Perpendicular means for a line to create a 90 degree angle, like it does on the y axis.
Hope this helps!
Answer:
10 13/21
Step-by-step explanation:
Convert mixed numbers into improper fractions
4 9/14 --> 65/14
2 6/7 --> 20/7
8 5/6 --> 53/6
Then calculate
65/14 - 20/7 + 53/6
Before that write it into a common denominator of 42
(195-120+371)/42
That would equal to 446/42
Divide it by 2
That would equal to 223/21
Then 223/21 = 10 13/21
P.S!!!
Don't blindly trust me, check before with others
And also hope it helped
