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ira [324]
3 years ago
12

Brianna is playing a video game and loses 3.5 lives. Later she gains 6 more lives. What is the overall change in Brianna's total

lives?
Mathematics
2 answers:
irina1246 [14]3 years ago
7 0

Answer:

2.5

Step-by-step explanation:

fredd [130]3 years ago
5 0
It depends how much she begins with but if she doesn’t begin with any then it’d be 2.5
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Answer: the answer is 12

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With a standard deviation of 6 minutes, we will test the hypothesis that σ = 6 against the alternative that σ < 6 if a random sample of the test times of 20 high school seniors has a standard deviation s = 4.51. use a 0.05 level of significance. <span /><span><span>
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The area of a square is 72.25 in2.<br><br> What is length of the side and the perimeter?
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Length of Side: 8.5
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Lianne has some dimes and nickels with a total value of $4.60. The number of dimes she has is 4 more than 3 times the number of
Annette [7]

If Lianne has some dimes and nickels with a total value of $4.60. The number of dimes she has is 4 more than 3 times the number of nickels then 0.15 Nickels does Lianne has.

<h3>What is Equation?</h3>

Two or more expressions with an Equal sign is called as Equation.

Given,

Lianne has some dimes and nickels with a total value of $4.60.

The number of dimes she has is 4 more than 3 times the number of nickels.

We need to find number of nickels

From the given information

N+D=4.60

D=3N+4

N+3N+4=4.60

4N=4.60-4

4N=0.6

Divide both sides by 4

N=0.15

Hence, 0.15 Nickels does Lianne has.

To learn more on Equation:

brainly.com/question/10413253

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6 0
11 months ago
Calculate the difference in the proportion of males and the proportion of females that smoke. Give your answer to 2 decimal plac
Xelga [282]

The difference in the proportion of males and the proportion of females that smoke is 0.08

<h3>Missing information </h3>

In a sample of 61 males, 15 smoke, while in a sample of 48 females, 8 smoke.

<h3>How to determine the proportion difference?</h3>

The given parameters are:

                             Male           Female

Sample                  61                  48

Smokers               15                   8

The proportion is calculated using:

p = Smoker/Sample

So, we have:

Male = 15/61 = 0.25

Female = 8/48 = 0.17

The difference is then calculated as:

Difference = 0.25 - 0.17

Evaluate

Difference = 0.08

Hence, the difference in the proportion of males and the proportion of females that smoke is 0.08

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