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Savatey [412]
3 years ago
12

The rental of the ice is $75, plus $3 per skater. Write an expression for the cost in dollars for n skaters.

Mathematics
1 answer:
eduard3 years ago
6 0

Answer:

f(n)=75+(n*3)

Step-by-step explanation:

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Two ninths of 540 students at east side middle school are in chorus. 3/4 of chorus members are girls. 2/5 of the girls in chorus
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2/9 • 3/4 • 2/5 = 1/15
1/15 of of the students are girl sopranos in chorus.
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How to write 0.99 in word form
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Ninety-nine hundredths.

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How do I solve a quadratic functiona
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3 years ago
A university is interested in promoting graduates of its honors program by establishing that the mean GPA of these graduates exc
den301095 [7]

Step-by-step explanation:

Population Mean (u) = 3.50

Sample (n)= 36

Sample mean (x) = 3.60

Population standard deviation (s)= 0.40

Test statistics:

(Null hypothesis) H0: u= 3.5 (Population mean is equal to 3.5)

(Alternate hypothesis) H1: u> 3.5 (Population mean is greater than 3.5)

Z= \frac{x-u}{\frac{s}{\sqrt{n} } }= \frac{3.60-3.50}{\frac{0.4}{\sqrt{36} } }= \frac{0.10}{0.067}= 1.5

critical value= Z0.05= 1.645 (From Z table)

Since, Z value is less than critical Z value that is Z<1.645

We cannot reject null hypothesis

So, we decide to reject that the mean GPA of graduates exceeds 3.50

3 0
3 years ago
Benjamin’s and David’s ages add up to 36 years. The sum of twice their respective ages also add up to 72 years. Find their ages
nydimaria [60]
Answer:Benjamin’s age = 30 and David’s age = 6

Explanation:

Let x be the age of Benjamin
Let y be the age of David

x + y = 36

And 2x + 2y = 72

If we plug 30 for x and 6 for y we get:

30 + 6 = 36
36 = 36

2(30) + 2(6) = 72
60 + 12 = 72
72 = 72

=

5 0
3 years ago
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