Answer:the z score is - 1
Step-by-step explanation:
Assuming a normal distribution for the delivery time of sandwiches by Sammy's Sandwich Shop. We would apply the formula for normal distribution which is expressed as
z = (x - u)/s
Where
x = delivery times
u = mean delivery time
s = standard deviation
From the information given,
u = 25 minutes
s = 2 minutes
We want to determine the z-score for the number of sandwiches delivered in less than 23 minutes. It becomes
z = (23 - 25)/2 = - 1
C=pi(d)
So d=7ft
Then pi(7ft)=21.98
23÷5=4 with a remainder of $3. each avocada was 4$.
Answer:
20 people
Step-by-step explanation:
Take the amout of bowls (25) and divide by the ratio (5)
25/5=5
Multiply 5 *4 = 20
25 bowls to 20 people = 25/20 = 5/4
ANSWER
The solution is 
EXPLANATION
We want to solve the simultaneous equations
and
.
We substitute equation (2) in to equation (1), to obtain
This has now become a linear equation in a single variable 
.
We solve for x by grouping like terms.
We divide through by negative 3 to get;
.
Hence, the solution is
