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omeli [17]
2 years ago
8

All 6 members of the Valastro family have decided to

Mathematics
1 answer:
atroni [7]2 years ago
7 0

Answer:

5

Step-by-step explanation:

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Find the z score that has 70.54% of the distribution area to its right
Alik [6]

The z score that has 70.54% of the distribution area is 9.92

<h3>What is a z-score?</h3>

The z-score is a numerical measurement used in statistics to refer to how much a given value differs from the standard deviation.

For the random variable x, the z-score is;

z = (x - 11)/2

therefore, 70.54% of the area under the curve lies to the right of x,

then the area to the left of x is;

100 - 70.54 = 29.46%

From the standard table, a z-score of -0.54 will yield an area of 29.46% to the left of x.

Therefore, we get;

(x - 11)/2 = -0.54

x - 11 = -0.54(2)

x = 9.92

The z score  is 9.92

Learn more about z score here;

brainly.com/question/4167122

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7 0
11 months ago
Calculate the annual return percentage
xenn [34]
The annual return percentages will be evaluated using the formula:
A=P(1+r/100)^n
where:
A=amount
P=principle
r=rate
n=time

a] A=$500, P=$400, n=1 years
500=400(1+r)^1
solving for r we shall obtain:
1.25=1+r
hence
r=1.25-1
r==0.25
annual rate of investment is 25%

b] A=2500+100=$2600, P=$ 2000, n=1 year
hence
2600=2000(1+r)^1
2600/2000=1+r
1.3=1+r
r=1.3-1
r=0.3 
annual rate of investment is 30%
5 0
3 years ago
in one study of smokers who tried to quit smoking with nicotine patch therapy 39 were smoking one year​
andrey2020 [161]

Answer:

Step-by-step explanation:

8 0
3 years ago
You have a part-time job. You work for 3 h on friday and 6 h on Saturday. You also receive an allowance of $20 per week. You ear
expeople1 [14]
8 dollars per hour because 92-20=72. That the allowance you earn per week. After that you divide 72/9 because you work 9 hours to get to 72 dollars.
6 0
3 years ago
Diego can type 140 words in 4 minutes.
alexandr1967 [171]

Answer:

12

Step-by-step explanation:

140/4=35 35 x 12=420

8 0
3 years ago
Read 2 more answers
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