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3 years ago

Someone please helppp me ! Extra points and brainlest

Mathematics

2 answers:

mariarad [96]3 years ago

8 0

Answer:

1 notebook cost $2.27

Step-by-step explanation:

Multiply the unit cost of the pencils by how many pencils you have : ( 1.29*3 = 3.87)

Subtract this from the total cost ( 10.68 - 3.87 = 6.81)

Divide this by 3 since there are 3 notebooks

6.81 / 3 = $2.27

VARVARA [1.3K]3 years ago

4 0

Answer:

2.27

Step-by-step explanation:

have a good day

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150 tis the answer 150 yall

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3 years ago

Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women w

VikaD [51]

Since the p - value is less than significance level . So, we will accept the null hypothesis.

(a) State the appropriate null and alternative hypotheses to assess whether women are taller today.

Definition of null hypothesis : The null hypothesis attempts to show that no variation exists between variables or that a single variable is no different than its mean. it is denoted

Alternative Hypothesis : In statistical hypothesis testing, the alternative hypothesis is a position that states something is happening, a new theory is true instead of an old one (null hypothesis).

We are given that The mean height of women 20 years of age or older was 63.7 inches.

So, null hypothesis : H₀ : μ = 63.7

Alternative Hypothesis : H₁ : μ > 63.7

b)The P-value for this test is 0.06.

The p-value represents the probability of getting a sample mean height of 20 years old women is 64.1 inches.

c) Write a conclusion for this hypothesis test assuming an alpha equals 0.10 level of significance.

p- value = 0.06

Since the p - value is less .

So, we will accept the null hypothesis

So,

Hence The mean height is 63.7 inches

To learn more about hypothesis testing from the given link

brainly.com/question/12976831

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2 years ago

one machine can make 138,800 small paperclips in one day. Another machine can make 84,250 large paper clips in one day. How many

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There are 54,550 more small paper clips, simply just minus 138,800 - 84,250 and that = 54,550, hope i helped!! :))

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3 years ago

Read 2 more answers

Maureen tracks the range of outdoor temperatures over three days. She records the following information.

Shkiper50 [21]

<h2>Hello!</h2>

The answer is:

The correct option is the third option;

$-23\leq t\leq 50$

To find which of the options expresses the intersection of the three days as an inequality in terms of temperature "t" we need to find an inequality which starts at the lowest temperature (greater or equal) and finish at the highest temperature (less or equal).

So, we have that the lowest temperature is -23°F and the highest temperature is 50°F, there are two options for that range, but we need to consider that the temperature will range from -23° to 50°, so, the correct option is the third option;

$-23\leq t\leq 50$

We can see that the inequality express that the temperature will range from -23°F being greater or equal than that, to 50°F being less or equal than that.

Have a nice day!

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4 years ago

2(6x + 9 - 3x) - 5x + 21 how many solutions are there

sergey [27]

Answer:

Only one solution.

Step-by-step explanation:

1) Collect like terms.

$2((6x-3x)+9)-5x+21$