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natita [175]
3 years ago
6

A culinary club earns $1360 from a dinner service. They sold 45 adult meals and 80 student meals. An adult meal costs twice as m

uch as a student meal. What is the cost of an adult meal?
Mathematics
1 answer:
CaHeK987 [17]3 years ago
5 0

Answer:

$16

Step-by-step explanation:

90m+80m=1360

170m=1360

m=8

8 x 2= 16

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What is the probability of you picking a weekend day from the days of the week?
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3/7

Step-by-step explanation:

its 3/7 because there are 3 weekend days and there are 7 days in total in one week, so out of the week there is 3 weekend days.

i hope this helps :)

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alexandera worked 5 hours one day 4.5 hours another and 2.5 another. Find the mean average deviation.
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3 years ago
A small group of students are aged 12, 14, 12, 15, 14, 13, 12, 12. What is their mean age?
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Answer:

12

Step-by-step explanation:

12 is the most number in the equation

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3 years ago
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Which term best describes the statement given below? <br>if a = b and b = c then a= c
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3 years ago
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Consider the continuous random variable x, which has a uniform distribution over the interval from 110 to 150. The probability t
Virty [35]

Answer:

The probability that x will take on a value between 120 and 125 is 0.14145

Step-by-step explanation:

For uniform distribution between a & b

Mean, xbar = (a + b)/2

Standard deviation, σ = √((b-a)²/12)

For 110 and 150,

Mean, xbar = (150 + 110)/2 = 130

Standard deviation, σ = √((150-110)²/12 = 11.55

To find the probability that x will take on a value between 120 and 125

We need to standardize 120 & 125

z = (x - xbar)/σ = (120 - 130)/11.55 = - 0.87

z = (x - xbar)/σ = (125 - 130)/11.55 = - 0.43

P(120 < x < 125) = P(-0.87 < x < -0.43)

We'll use data from the normal probability table for these probabilities

P(120 < x < 125) = P(-0.87 < x < -0.43) = P(z ≤ -0.43) - P(z ≤ -0.86) = 0.33360 - 0.19215 = 0.14145

Hope this Helps!!!

3 0
3 years ago
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