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Mariulka [41]
2 years ago
15

Jeanie has $500 to spend on dance lessons. There is a $50 one-time registration fee, and the lessons cost $35 each. How many les

sons can Jeanie take?
Mathematics
2 answers:
Sindrei [870]2 years ago
8 0
Jeanie can take 12 lessons.

500-50=450
450/35=12.86
Aleonysh [2.5K]2 years ago
7 0

Answer: There are approximately 13 lessons that Jeanie take.

Step-by-step explanation:

Since we have given that

Registration fees = $50

Cost of each lesson = $35

Total amount he spend = $500

Let number of lessons be 'x'.

So, our equation becomes,

50+35x=500\\\\35x=500-50\\\\35x=450\\\\x=\dfrac{450}{35}\\\\x=12.85\\\\x\approx 13

Hence, there are approximately 13 lessons that Jeanie take.

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A survey of 132 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take
ddd [48]

Answer:

For 90% CI = (0.428, 0.572)

For 98% CI = (0.399, 0.601)

The confidence interval (and Margin of error) reduces when 90% confidence level is used compared to when 98% confidence level is used.

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

p+/-z√(p(1-p)/n)

Given that;

Proportion p = 66/132 = 0.50

Number of samples n = 132

Confidence level = 90%

z(at 90% confidence) = 1.645

Substituting the values we have;

0.50 +/- 1.645√(0.50(1-0.50)/132)

0.50 +/- 1.645√(0.001893939393)

0.50 +/- 0.071589436011

0.50 +/- 0.072

(0.428, 0.572)

The 90% confidence level estimate of the true population proportion of students who responded "yes" is (0.428, 0.572)

For 90% CI = (0.428, 0.572)

For 98% CI = (0.399, 0.601)

The confidence interval (and Margin of error) reduces when 90% confidence level is used compared to when 98% confidence level is used.

7 0
1 year ago
Deana gave her younger sister $5.48 to buy some candy. Her sister returned $2.84 in change. How much did her sister spend on can
alexandr402 [8]

Answer:

$2.64

Step-by-step explanation:Get rid of the dollar sign and just subtract like normal.

 

                                  5.48

                                - 2.84

                                = 2.64

5 0
2 years ago
Name two ways you might see decimals used outside of school.
slega [8]
In money and weighing things 
7 0
2 years ago
Read 2 more answers
Grace has 1.35 pounds of strawberries, 1.4 pounds of bananas, and some apples. She has more pounds of apples than pounds of stra
satela [25.4K]

Answer:

Grace could have 1.36 pounds, 1.37 pounds, 1.38 pounds or 1.39 pounds of apples.

Step-by-step explanation:

Let a represent pounds of apples.

We have been given that Grace has 1.35 pounds of strawberries. She has more pounds of apples than pounds of strawberries.

This means that a is greater than 1.35. We can represent this information in an inequality as:

a>1.35

We are also told that Grace has 1.4 pounds of bananas. She has fewer pounds of apples than pounds of bananas. This means that a is less than 1.4. We can represent this information in an inequality as:

a

Upon combining both inequalities, we will get:

1.35

Therefore, Grace could have 1.36 pounds, 1.37 pounds, 1.38 pounds or 1.39 pounds of apples.

6 0
2 years ago
Carlos approaches a bank for home loan. He is denied the loan when the verification of his credit history through his credit rep
gizmo_the_mogwai [7]
The equal credit opportunity act i believe. :)
7 0
1 year ago
Read 2 more answers
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