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Roman55 [17]
2 years ago
13

Many stores run "secret sales": Shoppers receive cards that determine how large a discount they get, but the percentage is revea

led by scratching off that black stuff only after the purchase has been totaled at the cash register. The store is required to reveal (in the fine print) the distribution of discounts available. Determine whether the following probability assignment is legitimate?
10% off 20% off 30% off 50% off
a. 0.2 0.2 0.2 0.2
b. 0.5 0.3 0.2 0.1
c. 0.8 0.1 0.05 0.05
d. 0.75 0.25 0.25 -0.25
e. 1 0 0 0
Mathematics
1 answer:
Taya2010 [7]2 years ago
7 0

Answer:

b

Step-by-step explanation:

it makes the most senses the lower the discount the higher the chance

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PLZZ IN NEED HELP!
boyakko [2]

Answer:

18\pi\ cm^2

Step-by-step explanation:

step 1

Find the area of complete circle

The area of the circle is given by the formula

A=\pi r^{2}

we have

r=9\ cm

substitute

A=\pi (9)^{2}

A=81\pi\ cm^2

step 2

Find the area of the shaded region

we know that

The area of complete circle subtends a central angle of 360 degrees

so

using proportion

Find out the area of the shaded region if the central angle is equal to 80 degrees

\frac{81\pi}{360^o}=\frac{x}{80^o}\\\\x=81\pi(80)/360\\\\x= 18\pi\ cm^2

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2 years ago
Han made some hot chocolate by mixing 4 cups of milk with 6 tablespoons of cocoa. How many tablespoons of cocoa per cup of milk
jek_recluse [69]

Answer:

.8

Step-by-step explanation:

8 0
2 years ago
Help!
Leona [35]

Step-by-step explanation:

first minute = 24 wildebeest

by 20 min = (20 × 3) + 24 = 84 wildebeest

3 0
2 years ago
Every week a technician in a lab needs to test the scales in the lab to make sure that they are accurate. She uses a standard ma
melisa1 [442]

Precision is a measure of how close a value is to the ideal value. In this case, we calculate the difference to know what is the closest to 4 g:

4.05 – 4 = 0.05

3.98 – 4 = -0.02

4.021 – 4 = 0.021

 

We can see that the value of 3.98g has the lowest difference and is therefore the closest to 4g. Hence the most precise is:

<span>3.98 g</span>

3 0
2 years ago
The plot of land illustrated in the accompanying diagram has a perimeter of 34 yards. Find the length, in yards, of each side of
noname [10]

Answer:

Length of x+3= 6.75

Length of 4x=15

Length of 3x-1=10,25

Step-by-step explanation:

  • First make an equation and find x x+3+3x+1+4x=34
  • Then solve for x, answer will be 3,75
  • 3,75 represents x
3 0
1 year ago
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