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andre [41]
2 years ago
11

How to do a equation with 60 less than j. Would label it as 60--j or j--60 ??

Mathematics
2 answers:
slavikrds [6]2 years ago
3 0
J -60
-----------------------------------

Basile [38]2 years ago
3 0
J - 60 because the less means that you switch the numbers
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Suppose we want a 90% confidence interval for the average amount spent on entertainment (movies, concerts, dates, etc.) by fresh
katovenus [111]

Answer:

609

Step-by-step explanation:

Standard deviation = \sigma = $30

Margin of error = E = $2

Confidence level = 90%

Since the distribution is said to be normal, we will use z scores to solve this problem.

The z score for 90% confidence level = z = 1.645

Sample size= n = ?

The formula to calculate the margin of error is:

E=z\frac{\sigma}{\sqrt{n}}\\\\\sqrt{n}=z\frac{\sigma}{E}\\\\n=(\frac{z\sigma}{E} )^{2}

Using the values in above equation, we get:

n=(\frac{1.645 \times 30}{2} )^{2}\\\\ n = 608.9

This means, the minimum number of observations required is 609

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3 years ago
Blake rolls a number cube twelve times. He wants to show how many times the number cube lands on each number.
Svetllana [295]

Answer:

circle graph

Step-by-step explanation:

4 0
2 years ago
Can somebody help me with this?
N76 [4]
Rise is 35, run is 1
35 is the answer

8 0
2 years ago
Which equation best describes the pattern in the table below?
cupoosta [38]

Answer:

A

Step-by-step explanation:

The pattern in the table adds 1.50 for ever 15 minutes. That means per minute it adds \frac{1.5}{15} =0.10 or 10 cents. This means you multiply each minute by 0.10 to find the cost. This is the equation c = 0.10m.

7 0
3 years ago
As a motivational speaker, Bree speaks at school assemblies, charging a school
Oksi-84 [34.3K]

Answer:

<em>Bree spoke at 55 assemblies in this district.</em>

Step-by-step explanation:

Bree speaks at school assemblies charging a school district a total cost C modeled by the equation:

C(a) = 50a+1,500

Being a the number of assemblies attending the meeting.

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We can find the number of assemblies by solving the equation:

50a+1,500=4,250

Subtracting 1,500:

50a=4,250-1,500=2,750

Dividing by 50;

a = 2,750 / 50=55

Bree spoke at 55 assemblies in this district.

4 0
3 years ago
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