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vovikov84 [41]
3 years ago
11

Alicia can type 198 words in 3 minutes. How many words can she type in 1 minute?

Mathematics
2 answers:
arsen [322]3 years ago
8 0
66 words In a minute
ycow [4]3 years ago
5 0
She can type 66 words in 1 minute
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A set of physics exam scores are normally distributed with a mean of 80 points and a standard deviation of 6
Anuta_ua [19.1K]

Answer:

The proportion of exam scores that are lower than Irina's score is 0.9938

Step-by-step explanation:

<u>Data</u>

  • mean: 80 points
  • standard deviation (sd): 6 points
  • value of interest (x): 95 points

z-score is computed as follows:

z = (x - mean)/sd

z = (95 - 80)/6 = 2.5

We want to find:

P(z < 2.5)

From the table attached:

P(z < 2.5) = 0.9938

3 0
3 years ago
The mean of 4 numbers is 21. calculate the sum of the 4 numbers
Ugo [173]

Answer:

84

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count} , then

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sum = 84

8 0
2 years ago
Please answer this correctly
Dovator [93]

Answer:

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6 0
3 years ago
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After 15% discount an item cost $22.27 what was the original price?
musickatia [10]
Orig - .15 * orig = 22.27
.85 * orig = 22.27
Original price = 26.20

6 0
3 years ago
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Find the Value of X and Y. Picture attached in comments.
enyata [817]
I hope this helps you





2x+7=3x-7



x=14


2x+7+12y+1=180



2.14+8+12y=180



12y=180-36



12y=144


y=12
6 0
3 years ago
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