PLEASE HELP 20 points + brainliest

Simplify: -3 1 over 2 - (-12 1 over 4)

Answer:

13

Step-by-step explanation:

AB = 20

DE =12

Since AB and DE bisect each other, therefore:

AC = CB = ½(AB)

AC = CB = ½(20)

AC = CB = 10

Also,

DC = CE = ½(DE)

DC = CE = ½(12)

DC = CE = 6

Since F is the midpoint of DC, therefore:

FC = ½(DC)

FC = ½(6)

FC = 3

Find the value of FC + CB. Plug in the values of FC and CB:

3 + 10 = 13

Answer:

35

Step-by-step explanation:

7 * 5 = 35

Answer:

100 pennies

Step-by-step explanation:

each stack is 10 pennies. brad has 4 stacks which equal 40 and has 6 more stack which qual 60. 40+60=100

The number of pennies he has is 100 pennies.

Given,

Brad has groups of 10 pennies.

Brad counts 40, but he has 6 more stacks to count.

We need to find how many pennies he has.

If each group has 20 items the total number of items for M groups is:

= M x 20

We multiply the total number of groups with the number of items in each group.

We have,

1 group = 10 pennies

Brad counts 40 and 6 more stacks to go.

This means 4 groups have been counted.

= 4 x 10

= 40 pennies

Now 6 more stacks:

= 6 x 10

= 60 pennies

Now,

Total number of pennies:

= 40 + 60

= 100 pennies

Thus the number of pennies he has is 100 pennies.

Learn more about percentage errors in counting pennies here:

https://brainly.com/question/14277927

#SPJ2

Answer:

Step-by-step explanation:

2.31x10⁴

Answer:

3

Step-by-step explanation:

2n

3p

4q

Answer:

The one on top of me is wrong.

Step-by-step explanation:

There are 4 terms in this expression

Answer:

No, because the population mean, μ, is not included within the confidence interval estimate.

Step-by-step explanation:

A (1 - α)% confidence interval for a population parameter can be used make inferences about a statistic test of the parameter.

Decision rule:

If the null value of the population parameter is included in the interval then the null hypothesis will not be rejected. And vice-versa.

In this case, a market researcher wants to determine whether the population mean​ time customers spent on that website is 13 minutes a day or not.

The hypothesis can be defined as follows:

H₀: The population mean​ time customers spent on that website is 13 minutes a day, i.e. μ = 13.

Hₐ: The population mean​ time customers spent on that website is different from 13 minutes a day, i.e. μ ≠ 13.

The 95% confidence interval that the mean​ time customers spent on​ that website per day is, (15, 50).

The 95% confidence interval for the population mean time does no consist of the null value. Thus, the null hypothesis will be rejected.

It can be concluded that the population mean​ time customers spent on that website is not 13 minutes. Since the 95% confidence interval consist of values more than 13 minutes, it can be said that the  mean​ time customers spent on that website is more than 13 minutes.

Thus, the answer is:

No, because the population mean, μ, is not included within the confidence interval estimate.

16=48x-6y

swap the sides of the equation

48x-6y=16

Divide both sides of the equation by 2

24x-3y=8

now we do the same only different way ok

48x-6y=16

Divide both sides of the equation by 2

(48x-6y)÷2=16÷2

Distribute 2 through the parentheses

48x÷2-6y÷2=16÷2

calculate the quotient

48x÷2-6y÷2=8

calculate the quotient

24x-6y÷2=8

calculate the quotient

Answer: 24x-3y=8

PLEASE MARK ME AS BRAINLIEST

Answer:

-21 degrees

Step-by-step explanation:

Answer:

Hello your question has some missing part below is the missing part

The Zagat Restaurant Survey provides food, decor, and service ratings for some of the top restaurants across the United States. For 15 restaurants located in Boston, the average price of a dinner, including one drink and tip, was $48.60. You are leaving for a business trip to Boston and will eat dinner at three of these restaurants. Your company will reimburse you for a maximum of $50 per dinner. Business associates familiar with these restaurants have told you that the meal cost at one-third of these restaurants will exceed $50. Suppose that you randomly select three of these restaurants for dinner.

Answer : 0.2637

Step-by-step explanation:

Average price of dinner including one drink and a tip in Boston = $48.60

Number of restaurants = 15

number of restaurants whose meal cost more than $50 = 1/3 * 15 = 5

Probability that None of the meals will exceed the cost covered by your company

ATTACHED BELOW is the solution

P( none ) = 0.2637

Answer:

23.26

Step-by-step explanation:

I hope is helps and I hope you get right but I tried at least.

Answer:

23.26

Step-by-step explanation:

A simple search on rounding calculator and i took the k-12 test and got it right

Answer: it’s 66 I got it right

Step-by-step explanation:

Answer:

The answer will be 66 !!

Step-by-step explanation:

The answer will be 66 because if you look at the chart you can see how much money is cost to rent a bike for each hour. So for Ari, as he rented a bike it costs 9 dollars per hour. So Ari rented the bike for 4 hours, so multiply 4x9=36. Now for Meg, she rented a scooter for 3 hours, each hour means 10$. Now 3x10=30, Then just add 36+30 you get 66!

Answer: 19/25

Step-by-step explanation: 8/12 / 7/8 is (rounded) 0.76, and 0.76 as a fraction is 19/25.

Answer:

See photo below

I hope this helps!

Answer:

you see the top u take a line and put it right through the 2 top coners and put a line there.

Step-by-step explanation:

are you in statistics because I took it and I'm good at it. pet me see if I can figure it out. give me a minute

Answer: 2.166 repeating

More info

Subtract 706.5 - 549.5

That equals 157.

Divide 157 by 6

You get 2.1666666667, or 2.166 repeating

Answer:

seven hundred twenty-seven and five hundred twenty-six thousandths

Step-by-step explanation:

Hope this helps:)

Answer:

$7.50

Step-by-step explanation:

You can use proportions to find that 8/10 = 6/x

then you can multiply 10 by 6 and divide the result by 8 to get the answer.

You can also divide 10 by 8 to get 1.25 and multiply it by 6, as 10 divided by 8 gives you the unit rate, or the price of each battery. Then you multiply it by 6 to get 7.5, or the cost of 6 batteries.

Hope this helps!

Answer:

Eleven

Step-by-step explanation:

~I hope I helped you! :)~

Answer:

no there are more people than total people

Step-by-step explanation:

10 - 5 + 40 = 45

45 is frater than 30

hence there are more people than total

Answer:

Step-by-step explanation:

answers= 12/5, 5/13, -13/12, 13/5, -12/13

Hope this was right, this is how my professor explained it at my school so tell me if I am wrong :)

Answer: -5/12, 5/13

Step-by-step explanation:

Answer:

The Answer is C y > -[tex]\frac{4x}{5}[/tex] + 5

Step-by-step explanation:

Graph the inequality by finding the boundary line, then shading the appropriate area such as the graph below

Answer:

37.25​, 35.5​, 33.75​, 32, 30.25.

Step-by-step explanation:

Subtract the first term from the second term:

35.5 - 37.25 = -1.75

Subtract the second term from the third term:

35.5 - 33.75 = -1.75

The common difference is -1.75.

To find each subsequent term, add the common difference to the current term.

33.75 + (-1.75) = 32

32 + (-1.75) = 30.25

Answer:

37.25​, 35.5​, 33.75​, 32, 30.25.

Answer:     -36

Step-by-step explanation: distribute -6 through the parentheses 6p-48-6p+12 since two opposites add up tp zero remove them from the expression -48+12

                          ANSWER -36

Answer:

Very confused! at 95% confidence level, the true population mean will be between 134.33 and 145.67.

Step-by-step explanation:

A random sample of 45 home theater systems has a mean price of ​$140.00

Assume the population standard deviation is ​$19.40

population standard deviation is 19.40

sample size is 45.

standard error of the sample mean is 19.40 / sqrt(45) = 2.89198

at 90% confidence level, critical z is plus or minus 1.645.

at 95% confidence level, critical z is plus or minus 1.96.

critical raw score will be sample mean plus or minus critical z-score * standard error of the mean.

your sample mean is 140.

your standard error of the mean is 2.89198

at 90% confidence level, your critical raw score will be 140 plus or minus 1.645 * 2.89198.

that becomes 140 plus or minus 4.76 rounded to the nearest penny.

at 90% confidence level, the true population mean will be between 135.24 and 144.76.

at 95% confidence level, your critical raw score will be 140 plus or minus 1.96 * 2.89198.

that becomes 140 plus or minus 5.67 rounded to the nearest penny.

Using the z-distribution, it is found that:

We are given the standard deviation for the population, and thus, the z-distribution is used.

The information is:

A z-confidence interval is given by:

[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]

We have to find the critical value, which is z with a p-value of [tex]\frac{1 + \alpha}{2}[/tex], in which [tex]\alpha[/tex] is the confidence level.

For the 90% confidence interval, [tex]\alpha = 0.9[/tex], thus, z with a p-value of [tex]\frac{1 + 0.9}{2} = 0.95[/tex], which means that it is z = 1.645.

Then, the 90% confidence interval is:

[tex]\overline{x} - z\frac{\sigma}{\sqrt{n}} = 85.22 - 1.645\frac{13.97}{\sqrt{74}} = 82.55[/tex]

[tex]\overline{x} + z\frac{\sigma}{\sqrt{n}} = 85.22 + 1.645\frac{13.97}{\sqrt{74}} = 87.89[/tex]

The 90% confidence interval for the population mean is (82.55, 87.89). It means that we are 90% sure that the true population mean is between these two values.

For the 95% confidence interval, [tex]\alpha = 0.95[/tex], thus, z with a p-value of [tex]\frac{1 + 0.95}{2} = 0.975[/tex], which means that it is z = 1.96.

Then, the 95% confidence interval is:

[tex]\overline{x} - z\frac{\sigma}{\sqrt{n}} = 85.22 - 1.96\frac{13.97}{\sqrt{74}} = 82.04[/tex]

[tex]\overline{x} + z\frac{\sigma}{\sqrt{n}} = 85.22 + 1.96\frac{13.97}{\sqrt{74}} = 88.40[/tex]

The 95% confidence interval for the population mean is (82.04, 88.40). It means that we are 95% sure that the true population mean is between these two values.

The higher the confidence level, the higher the critical value is, and thus, a higher confidence level leads to a wider interval.

A similar problem is given at https://brainly.com/question/22596713

Answer:

- 93/125

Step-by-step explanation:

Answer:

-93/125 is the answer

Answer:

7657897vhbhjgiyfutvbvgj .jhvbjh76567

Step-by-step explanation:

ilyvlkvlhv8nkbh;k.h

:)

Answer:

[tex]m = \frac{2}{3}[/tex]

Step-by-step explanation:

Use the following equation:

slope [tex](m) = \frac{y^2 - y^1}{x^2 - x^1}[/tex]

Set the variables with the points:

[tex](x_1 , y_1) = (-16 , -6)\\(x_2 , y_2) = (-4 , 2)\\[/tex]

Plug in the corresponding numbers to the corresponding variables in the equation:

[tex]m = \frac{2 - (-6)}{-4 - (-16)}[/tex]

[tex]m = \frac{2 - (-6)}{- 4 - (-16)} = \frac{2 + 6}{16 - 4} = \frac{8}{12}[/tex]

slope [tex]m = \frac{8}{12}[/tex] [tex]= \frac{2}{3}[/tex]  (simplified)

~

Answer:

2/3

Step-by-step explanation:

Answer:

The quotient is 10x + 16

The remainder is [tex]28x^2 + 10x +22[/tex]