Mean 60 - 2(0.9) = 58.2
58.2 is 2 standard deviations from the mean.
Answer:
Each person will pay $ 7.20
Step-by-step explanation:
First we find the total bill
Pizza $18.60
Salad $2.50
<u>Soda $2.25</u>
Total $ 23.35
Sales Tax would be= 8 1/4% of $ 23.35 =$ 1.926= $ 1.93
Tip = 15% of $ 23.35= $ 3.5025
Total Bill paid= $ 23.35 + $ 1.93+ $3.50= $ 28.7825 or $ 28.78
Now dividing the bill among 4 persons = $ 28.78/4= $ 7.196 or $ 7.20
Paying the bill equally is better and convenient than paying alone as each person gets an equal share of pizza, salad and the soda.
D
the answer is D. dilation cannot be used to prove this
Answer:
20:4
Step-by-step explanation:
got it for u
Answer:
see below
Step-by-step explanation:
The formula for the sum of an infinite geometric series with first term a1 and common ratio r (where |r| < 1) is ...
sum = a1/(1 -r)
Applying this to the given series, we get ...
a. sum = 5/(1 -3/4) = 5/(1/4) = 20
b. sum = d/(1 -1/t) = d/((t-1)/t) = dt/(t-1)
_____
The derivation of the above formula is in most texts on sequences and series. In general, you write an expression for the difference of the sum (S) and the product r·S. You find all terms of the series cancel except the first and last, and the last goes to zero in the limit, because r^∞ → 0 for |r| < 1. Hence you get ...
S -rS = a1
S = a1/(1 -r)
