The numbers of cookies in a shipment of bags are normally distributed, with a mean of 64 and a standard deviation of 4. What percent of bags of cookies will contain between 64 and 68 cookies?
A. 17%
B. 68%
C. 47.5%
D. 34

step-by-step explanation:

a and d

70.30

step-by-step explanation:

1. perpendicular

2. parallel

3. perpendicular

given expression is

we have radical  

we need to select an option that has same radical

(a)  

this expression has cube root instead of square root . so it is not a like radical.

(b)

y is included inside the radical. so it is not a like radical.

(c)

this expression has cube root instead of square root . so it is not a like radical.

(d)

5 is inside the radical square root. so it is   a like radical.