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kolbaska11 [484]
3 years ago
12

And buys a pencil for $0.45 draw and label coins. Ann could use to make $0.45

Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
8 0

Answer:

You could use 9 nickels

You could use 45 pennies

You could use 1 quarter and 2 dimes

You could use 4 dimes and 1 nickel

You could use 2 dimes and 5 nickels

You could use a lot more combination that equal 45...

jekas [21]3 years ago
4 0

Answer:

You could use one quarter and two dimes... that will equal $0.45

(I'm not sure what you are asking for)

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dion flips a coin 20 times and records if it comes up heads. if getting heads is a success, what is the probability of a success
kolbaska11 [484]

Answer:

\frac{1}{2}

Step-by-step explanation:

The probability of success (getting heads) on one roll DOESNT affect other rolls, so we need to find probability of getting a head in a roll.

Probability is defined as the number of favorable outcomes divided by the total number of outcomes.

<em>Here, favorable outcome is getting a head. So, on one roll, getting a head is 1. Also, the total number of outcomes is either a head or a tail. So total number of outcomes is 2.</em>

Thus,

P(Heads) = 1/2

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3 years ago
The Hamden board of education wants to know how the community feels about building a new media center for the middle school. The
Alex Ar [27]

Answer:

According to the statement above, The Hamden board of education called every tenth person on the registration list. So let's analyze each case:

The sample is not randomly chosen (FALSE)

Given that the statement doesn't tell us anything about the way they choose the sample, it is reasonable to conclude that this is a randomly chosen. They called every tenth person on the registration list until the number of people was 40.

The sample should be larger to give more reliable information (TRUE)

You did not have to use mathematics to determine that you would need more information to get a conclusion. You must increase the sample, that is, the sample must be larger to give a reliable information.

The sample size is too large to make inferences (False)

This is explained in the previous item. If the sample should be lager is because the size is not too large.

The sample size is too small to represent the population (TRUE

This is true because 40 voters represent barely 0.5% of the entire list. This list has 7300 voters, so getting the conclusion from this sample doesn't provide with a strong conclusion.

The sample size is too small and will show larger variation. (FALSE)

Although the sample size is too small, the sample size not necessarily will show variation. In fact, it is possible that it does not show any variation and most of the people feel well about building a new media center for the middle school but it doesn't mean that the whole community does.

The sample is invalid because it randomly chooses voters. (FALSE)

It is false because in probability studies the sample is chosen randomly, so you get conclusions about the whole population always taking samples that represent the population as a whole.

The sample size is too small and can lead to false inferences (TRUE)

You can get false conclusions given that the sample size is too small. It's important to note that the sample size supports the conclusion of the study, so the sample must increase to have a reliable study.

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3 years ago
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Sonbull [250]

Answer:

Is it bad that I'm a senior and have no idea how to do this?

Step-by-step explanation:

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3 years ago
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Please help!!!! And show work please!
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C. Table T
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Find the area of triangle ABC with the given parts. Round to the nearest whole number.
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\sin{26.4^o}= \frac{h}{12.3} &#10;\\&#10;\\h=12.3\times \sin{26.4^o}=5.47&#10;\\&#10;\\A= \frac{7.7\times5.47}{2}= 21.06

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