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snow_lady [41]
3 years ago
14

The 12 department chairs at Cedar H.S. represent the teaching staff. The principal assigns each chair a number and uses a random

number generator to select 2 chairs to participate in a retreat at the state capital. Complete the sentence. The scenario is or is not a simple random sample because every group of size 2 in the population has or does not have an equal chance of being selected.
Mathematics
1 answer:
Snezhnost [94]3 years ago
8 0

Answer:

is

has

Step-by-step explanation:

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Gilda walks to the train station. If she walks at the rate of 3 mph, she misses her train by 7 minutes. However, if she walks at
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We'll represent the distance as d and the time as t. 
d= 3(t+7)            because Gilda is 7 minutes late when travelling 3 mph
d= 4(t-5)             because Gilda is 5 minutes early at 4 mph

d= 3t + 21
d= 4t -20
3t +21 =4t -20
41=t
d= 3(41) +21= 144
The distance is 144 miles. 
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A movie theater has a seating capacity of 333. The theater charges $5.00 for children, $7.00 for students,
pantera1 [17]

Answer:

182 children, 91 adults, 60 students

Step-by-step explanation:

The quantity of adults is x, then the quantity of children are 2x,  the quantity of students is 333-x-2x=333-3x. The charge from all adults is 12x, students gave 7*(333-3x), children gave 5*2x=10x, the sum of all money is 2422

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