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SOVA2 [1]
3 years ago
12

Julio places gray chairs and blue chairs in each row the ratio of gray to blue chairs in each row 7-3 how many gray chairs and b

lue chairs will julio use if he sets up a total of 80 chairs
Mathematics
1 answer:
g100num [7]3 years ago
4 0

Answer:

56 gray chairs

24 blue chairs

Step-by-step explanation:

ratio of gray to blue chairs in each row

Gray : blue = 7 : 3

Gray chairs = 7

Blue chairs = 3

Total ratio = 7 + 3

= 10

how many gray chairs and blue chairs will julio use if he sets up a total of 80 chairs

Number of gray chairs = 7/10 × 80

= 0.07 × 80

= 56 gray chairs

Number of blue chairs = 3/10 × 80

= 0.03 × 80

= 24 blue chairs

56 gray chairs

24 blue chairs

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Step-by-step explanation:

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3 years ago
If you choose each randomly, what is the probability that you choose a peach pie and coffee? Write as a simplified fraction.
emmasim [6.3K]

Answer:

1\4

Step-by-step explanation:

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3 years ago
The mouse weights​ (in grams) of a random sample of 100 mice involved in a nutrition experiment​ are: Interval 41.5----43.5 43.5
LUCKY_DIMON [66]

Answer:

(a) The mean of the weight of the mice is 50.26 grams.

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Step-by-step explanation:

(a)

The mean is given as follows:

\bar X=\frac{\sum f_{i}x_{i}}{\sum f_{i}}

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Thus, the mean of the weight of the mice is 50.26 grams.

(b)

Compute the standard deviation as follows:

s=\frac{1}{\sum f_{i}-1}[\sum f_{i}x_{i}^{2}-\frac{1}{\sum f_{i}}(\sum f_{i}x_{i})^{2}]

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Thus, the standard deviation of the weight of the mice is 14.08 grams.

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4 years ago
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Step-by-step explanation:

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malfutka [58]

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Step-by-step explanation:

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3 years ago
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