please help show work

The valid conclusion from the pie chart is

D. Twenty-two percent of the students read four or more books.

Here, we have , from the given pie chart , we get,

the pie chart's data:

1 book: 18%

2 books: 24%

3 books: 42%

4 books: 12%

5 or more books: 4%

The "4 books" category explicitly states that 12% of the students read 4 books.

However, this does not necessarily mean that only 12% read four or more books.

The "5 or more books" category includes students who read five or more books, and this category accounts for 4% of the total.

Therefore, the conclusion that 22% of the students read four or more books is valid because it's the sum of the "4 books" category (12%) and the "5 or more books" category (4%).

None of the other options are valid conclusions based on the given pie chart:

Option A is not supported by the pie chart data.

Option B is not true; more than half the students (18% + 24% = 42%) have read three or more books.

Option C is not supported by the pie chart data.

So, the correct conclusion is D. Twenty-two percent of the students read four or more books.

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The quotient of  10⁻⁴/10² is 10⁻⁶

Quotient is the result obtained by dividing one quantity by another. It represents the value that is obtained after division.

For example, if you divide 20 by 2, the quotient is 10 because 20 divided by 2 equals 10.

Division law states that:

10ᵃ / 10ᵇ = 10ᵃ⁻ᵇ

In this case have:

10⁻⁴/10² = 10⁻⁴⁻²   (Division law)

10⁻⁴/10² = 10⁻⁶

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Answer:5

Step-by-step explanation:

Answer:

se supone que debes usar el SINE RATIO ya que se trata del lado opuesto y la hipotenusa.

Answer:

9 meters

Step-by-step explanation:

To find the area of a rectangle you do length times width. To find a side length, or the width divide the area by the length. 99/11=9.

The width is 9 meters.

A) The population being sampled in this study is Population Mean

B) A parameter or a statistic of 810 is sample mean weight of the children will be same as the mean weight of the population

What is Sample and Population?

The entire group about whom you want to make conclusions is referred to as a population. The particular group from which you will gather data is known as a sample.

Reason For (A) - An objective estimator of the mean weight m in the population of infants with exceptionally low birth weights is the sample mean. This indicates that the sample mean is the same as the population mean when the sample is a straightforward random sample taken from the population.

Reason For (B) - According to the query, a newborn is considered to have a very low birth weight if its weight is less than 1000 grams. 219 infants with extremely low birth weights had an average weight of 810 grams. Additionally, the sample mean provides a fair estimate of the average weight of the population of infants who were born with exceptionally low birth weights.

Therefore, if various samples of size 219 are drawn from the same population, the mean of the sample mean weight of the children will be the same as the mean weight of the population.

The mean of all sample means will be equal to the population mean weight if the ith sample's mean weight is x.

Therefore, the sample mean is an unbiased estimator of the population mean, which means that when various samples of size 219 are drawn from the same population, the mean of the sample means will be identical to the population mean.

A) The population being sampled in this study is Population Mean

B) A parameter or a statistic of 810 is sample mean weight of the children will be same as the mean weight of the population

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Answer:

223.6

Step-by-step explanation: take 32.5 and multiply it by 6.88

Answer:

it's 4

Step-by-step explanation:

I hope it helps .....

Answer:

4

Step-by-step explanation:

2+2=4

I'll give a real world problem to help you understand. So pretend that you have 2 cookies on your plate and your sibling has 2 cookies on their plate too. If your siblings gives you their 2 cookies and you add them to your plate, how many cookies are on your plate now? There should now be 4 of them!

Does this help?

the product of 12 and 3 decreased by 6​

we have that

the product of 12 and 3 ------> is number 12 multiplied by 3

12*3

decreased by 6​

12*3-6=36-6=30

The correct Option is C. Dominic buys about 18 ounces of romaine lettuce in the 64-ounce container of salad mix.

From the pie chart, we can infer that the percentage of romaine lettuce in the salad mix is 27%.

We can find the number of ounces of romaine lettuce in a 64-ounce container of salad mix by multiplying 64 by 27/100.

This is because we want to find what fraction of the whole salad mix is romaine lettuce, and then multiply it by the total number of ounces in the container.

Using proportions, we can find that:Let x be the number of ounces of romaine lettuce in a 64-ounce container of salad mix.

27/100 = x/64

Solving for x, we get:x = (27/100) * 64 = 18.28

Therefore, there are about 18.28 ounces of romaine lettuce in a 64-ounce container of salad mix.

However, since we are asked to give an approximate answer, we can round this to the nearest whole number, which is 18.

So, Dominic buys about 18 ounces of romaine lettuce in the 64-ounce container of salad mix.

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Answer:

the change in C can be calculated by evaluating the cost function at Q = 356 and Q = 357

change in C = 1,020,000/357 + 7.6*357 - 1,020,000/356 + 7.6*356 ≈ -0.43

Instantaneous rate of change in C is first order derivative C':

C'(Q) = -1,020,000/(Q^2) + 7.6

C'(356) = -1,020,000/(356^2) + 7.6 ≈ - 0.45

Hope my answer helps.

Answer:

True/Prove

PLEASE GIVE BRAINLIEST THANK YOU!!!

The given information tells us that Terry's wins-to-races ratio is 2:3, but we cannot determine the exact number of races he has won without additional information about the total number of races he has participated in.

If the ratio of the number of times Terry has won to the number of races he has swum in is 2:3, we can set up a proportion to determine the number of races he has won.

Let's denote the number of times Terry has won as x, and the total number of races he has swum in as y. According to the given ratio, we have:

x/y = 2/3

To find the value of x, we need to solve for x when y is known. Since y represents the total number of races, we don't have that information in the given problem. Therefore, we cannot determine the exact number of races Terry has won without knowing the total number of races he has participated in.

The ratio tells us the relationship between the number of wins and the total number of races, but without knowing the denominator (total races), we cannot find a specific value for the numerator (number of wins). We can only determine the ratio between the two quantities.

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A=6 × + 10=88555%__/455

Answer:

The correct 90% confidence interval for the difference between women and men in the average number of hours of personal time taken per year is

contained by the interval (0.54 , 5.18)

Step-by-step explanation:

Given that:

for women

sample size  = n₁ = 16

sample mean \((\bar X_1)\) = 24.75

standard deviation s₁ = 2.84

for men

sample size for men = n₂ = 7

sample mean \((\bar X_2)\) = 21.89

standard deviation s₂ = 3.29

degree of freedom = \((n_1 + n_2 )-2\)

= 16 + 7 -2

= 21

The critical value for \(\alpha = 0.1 \ and \ df \ of \ 21 \ is :\)

\(t_{0.005;21}= 1.721\)

The pooled standard deviation can be calculated as follows since the population variances are assumed to be equivalent.

\(s_p = \sqrt{\dfrac{(n_1 -1)s_1^2+(n_2-1)s_2^2}{n_1+n_2-2}}\)

\(s_p = \sqrt{\dfrac{(16 -1)2.84^2+(7-1)3.29^2}{16+7-2}}\)

\(s_p = \sqrt{\dfrac{(15)8.0656+(6)10.8241}{21}}\)

\(s_p = 2.976\)

The standard error is estimated as follow:

\(se = s_p\sqrt{\dfrac{1}{n_1} + \dfrac{1}{n_2}}\)

\(se = 2.976\sqrt{\dfrac{1}{16} + \dfrac{1}{7}}\)

se = 1.348

Finally, the confidence interval \(C.I = ( x_1 -x_2 -t_c \times se \ \ ; \ \ x_1-x_2 +t_c \times se)\)

\(=(24.75 - 21.89 -1.721 \times 1.348 \ \ , \ \ 2475 - 21.89 + 1.721 \times 1.348) \\ \\ \mathbf{ = (0.54 \ \ , \ \ 5.18)}\)

sec(theta) = 1/cos(theta)

I believe that is your option D

Answer:

A. 1.2 > -6.9

Step-by-step explanation:

The reasoning is because positive numbers are ALWAYS greater than negative numbers, and in this question, 1.2 is higher than -6.9. Hope this helped!

Answer:

1.2> - 6.9

Step-by-step explanation:

1.2 is greater than (>) -6.9

Answer:

3 bookcases

Step-by-step explanation:

Answer:

the first one is 4 i think and the last one is 48 percent. im not sure if the dotted line is a underline tho

Step-by-step explanation:

:))

Multiply the numerator and the denominator by 100 to get 48/100

which is the same as 48% .

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

Given,

Fraction = 12/25

To convert into percentage

divide the number by 100 and multiply by 100.

= ((12/25)×100)/100

= 12 × 100/25×100

= 48/100

= 48%

Hence, 48% is the expression of 12/25 as percent gotten by multiplying and dividing with 100.

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Answer:

54

Step-by-step explanation:

I'm assuming the equation looks like this: 15x - 6

15*4 - 6

60 - 6

54

OR if it's just x-6 then the answer is -2

Hope this is what you were asking, have a nice day! :)

The expression "La luna pesca en el charco". which is equivalent to "The moon fishes in the puddle" and is used to express that an event is not likely to happen.

To begin, this expression is not a literal but a figurative expression. Now, the equivalent of this expression in English is "The moon fishes in the puddle". As this is a figurative expression we know that it is impossible for the moon to fish.

Instead, this expression means that something is impossible or not very likely to happen. For example, winning the lottery if you do not buy the lottery.

Note: Here is the question in English:

What is the meaning of the moon fishes in the puddle?

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The addition of the 7 / 4 + 1 / 2 + 5 / 3 + 1 / 3 + 1 / 4 + 1 / 2 is 5.

A fraction represents a portion of a total. This entire may refer to a place or a group of places. The Latin word "fraction," which means "to break," is the source of the English term "fraction."

The distribution of food and supplies as well as the lack of a metal currency were among the mathematical issues that the Egyptians utilized fractions to solve because they were the first civilization to understand fractions.

Given:

7 / 4 + 1 / 2 + 5 / 3 + 1 / 3 + 1 / 4 + 1 / 2

Rearrange the number as shown below,

7 / 4 + 1 / 4 + 1 / 2 + 1 / 2 + 5 / 3 + 1 / 3

Add the like terms as shown below,

(7 + 1) / 4 + (1 + 1) / 2 + (5 + 1) / 3

8 / 4 + 2 / 2 + 6 / 3

Divide the terms as shown below,

2 + 1 + 2

5

Thus, the addition is 5.

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Step-by-step explanation:

I guess, she is checking how FAR she runs each day (and not how fast ...).

how many more miles did she run on Friday ?

we get this by calculating the difference between the 2 values. that is what subtraction is for.

7 2/8 - 3 3/4

as long as we have the numbers as combination of full and fraction numbers, we can subtract the full numbers right away.

7 2/8 - 3 3/4 = 4 2/8 - 3/4

now we convert both numbers to full fractions :

4 2/8 - 3/4 = (32 + 2)/8 - 3/4 = 34/8 - 3/4

and then we bring both fractions to the same denominator, in this case 1/8 :

34/8 - 3/4 = 34/8 - 3/4×2/2 = 34/8 - 6/8 = 28/8

now we can simplify

28/8 = 7/2 = 3 1/2

so, she ran 3 1/2 miles more in Friday than on Tuesday.

FYI

I just wanted to show you the full formal flow of such a calculation.

but we could have gotten the result quicker by recognizing that we can simplify the numbers already at the beginning :

7 2/8 - 3 3/4 = 7 1/4 - 3 3/4 = 4 1/4 - 3/4 = 3 2/4 = 3 1/2

Answer:

a) 20.44% probability that none of the selected adults say that they were too young to get tattoos.

b) 35.90% probability that exactly one of the selected adults says that he or she was too young to get tattoos.

c) 56.34% probability that the number of selected adults saying they were too young is 0 or 1.

d) No

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they say they were too young when they got their tattoos, or they don't say that. Each adult is independent of each other. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)

In which \(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by the following formula.

\(C_{n,x} = \frac{n!}{x!(n-x)!}\)

And p is the probability of X happening.

18% say that they were too young when they got their tattoos.

This means that \(p = 0.18\)

Eight adults who regret getting tattoos are randomly selected

This means that \(n = 8\)

a. Find the probability that none of the selected adults say that they were too young to get tattoos.

This is P(X = 0).

\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)

\(P(X = 0) = C_{8,0}.(0.18)^{0}.(0.82)^{8} = 0.2044\)

20.44% probability that none of the selected adults say that they were too young to get tattoos.

b. Find the probability that exactly one of the selected adults says that he or she was too young to get tattoos.

This is P(X = 1).

\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)

\(P(X = 1) = C_{8,1}.(0.18)^{1}.(0.82)^{7} = 0.3590\)

35.90% probability that exactly one of the selected adults says that he or she was too young to get tattoos.

c. Find the probability that the number of selected adults saying they were too young is 0 or 1.

Either a. or b.

20.44 + 35.90 = 56.34

56.34% probability that the number of selected adults saying they were too young is 0 or 1.

d. It we randomly select 9 adults. Is 1 a significantly low number who day that they were too young to get tattoos?

Now \(n = 9\)

It is significantly low if it is more than 2.5 standard deviations below the mean.

The mean is \(E(X) = np = 9*0.18 = 1.62\)

The standard deviation is \(\sqrt{V(X)} = \sqrt{n*p*(1-p)} = \sqrt{9*0.18*0.82} = 1.15\)

1 > (1.62 - 2.5*1.15)

So the answer is no.

Answer:

r 0.6 kWh to run for 30 minutes.

Answer:

ok so it takes 1200 watts for a hair dryer to run for a full hour, that means it takes 600 watts, or 600 Wh, or 0.6 kWh to run for 30 minutes

Step-by-step explanation:

In the given triangle, the angle between the two sides 5 and 6 is nearest 41°.

The term triangle means the polygon which has three sides and three angles and three vertices,

Here we have given that three  sides of a triangle have lengths 4, 5, and 6.

And here we need to find the angle between the two sides 5 and 6

According to the given values, let us consider a = 4, b = 5 and c = 6

So, the angle between 5 and 6 can be written as ∠b

And it can be calculated as the following is one way to perform the calculation and it may not be the best way.

∠B = arc cos(a² + c² - b²)/2ac

When we apply the values one the formula, then we get

=> 0.72273 rad

The approximate degree is written as

=> 41.41°

When we round off it then we get the resulting value,

=> 41°

Therefore, option (c) is correct.

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The percentage change in the number of burglaries over the two-year period is 35% .

The change in burglaries over the two-year period to have  a 40% increase is 6.7%.

Let's assume that the annual number of burglaries in 2011 is 1000. After the 50% increase in 2012, the number of burglaries would be: 1000(1.50) = 1500.

The number of burglaries after the 10% reduction in 2013 would be: 1500(.90) = 1350

The change in burglaries over the two-year period = (1350 / 100) - 1 = 35%

In order to determine how much burglaries would have to reduce in order to have a 40% change in burglaries, this formula would be used

(x - 1000) / 1000 = 0.40

x - 1000 = 400

x = 1400

The change in burglaries over the two-year period to have  a 40% increase = (1400 / 1500) - 1 = 6.7%

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Answer:

p = 6

Step-by-step explanation:

5 + 2/3 (2p - 6) = 9

5 + 4/3p - 4 = 9

1 + 4/3p = 9

4/3p = 8

p = 6

Answer:

p= 6

Step-by-step explanation:

Solve for p:

(2 (2 p - 6))/3 + 5 = 9

Put each term in (2 (2 p - 6))/3 + 5 over the common denominator 3: (2 (2 p - 6))/3 + 5 = 15/3 + (2 (2 p - 6))/3:

(15/3 + (2 (2 p - 6))/3) = 9

15/3 + (2 (2 p - 6))/3 = (2 (2 p - 6) + 15)/3:

((2 (2 p - 6) + 15)/3) = 9

2 (2 p - 6) = 4 p - 12:

((4 p - 12) + 15)/3 = 9

Grouping like terms, 4 p - 12 + 15 = 4 p + (15 - 12):

(4 p + (15 - 12))/3 = 9

15 - 12 = 3:

(4 p + 3)/3 = 9

Multiply both sides of (4 p + 3)/3 = 9 by 3:

(3 (4 p + 3))/3 = 3×9

(3 (4 p + 3))/3 = 3/3×(4 p + 3) = 4 p + 3:

(4 p + 3) = 3×9

3×9 = 27:

4 p + 3 = 27

Subtract 3 from both sides:

4 p + (3 - 3) = 27 - 3

3 - 3 = 0:

4 p = 27 - 3

27 - 3 = 24:

4 p = 24

Divide both sides of 4 p = 24 by 4:

(4 p)/4 = 24/4

4/4 = 1:

p = 24/4

The gcd of 24 and 4 is 4, so 24/4 = (4×6)/(4×1) = 4/4×6 = 6:

Answer: p = 6