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My name is Ann [436]
4 years ago
8

Allison practices her violin for at least 12 hours per week. She practices for three fourths of an hour each session. If Allison

has already practiced 3 hours this week, how many more sessions remain for her to meet or exceed her weekly practice goal?
Mathematics
1 answer:
RoseWind [281]4 years ago
4 0
Okay so 3 hours*60 minutes= 180
45 minutes?
so 180/45=4
so in three hours she has had four sessions
and in six it will be 8
in nine it will be 12
and in 12 it'll be 16
sixteen sessions
hope i am right
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Dafna11 [192]

Answer:

assuming you want to get rid of the radical here so, 25/2

Step-by-step explanation:

raise the whole fraction to the second power, and the radical will cancel out, then solve 5^2 which is 25. end up with 25 over 2

8 0
3 years ago
A desk manufacturer claims that the average time it takes to assemble a desk is 90 minutes with a standard deviation of 32 minut
stealth61 [152]

Answer:

The standard deviation of the sample mean is 4 minutes

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

The standard deviation of the population is 32.

Sample of 64.

So

s = \frac{32}{\sqrt{64}} = 4

The standard deviation of the sample mean is 4 minutes

6 0
3 years ago
What are the coordinates of the two points in quadrant 2
ANEK [815]

what do you mean by two points???? You are going to have to provide a picture of the graph. Unless you mean (-,+)

8 0
3 years ago
Which graph represents the solution set of the system of inequalities?<br><br> y&lt;−3x−2<br> y≤x−2
Shtirlitz [24]

Answer:

Go to Desmos.com

Step-by-step explanation:

Desmos.com is an online graphing calculator.

I attached how the graph but for future references you can use Desmos. Its free too!

3 0
4 years ago
200 people whee asked how often they go to the movies and whether they prefer action or drama. If 144 people went to the movies
Alex Ar [27]

Answer:

It would be 72% trust me it is correct because this level of questions seems a little to young for me lol

Step-by-step explanation:

6 0
3 years ago
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