Which of these numbers is in the solution set of 7x = 56? A. 9 B. 6 C. 7 D. 8

Answer:

-515

Step-by-step explanation:

In this example the first value is −15 and every value afterwards is 20 less.

After substituting these values to above formula, we obtain:

All we have to do is add 25 twenties or 25 x 20 = 500 and -15 - 500 = -515

The required 28 th term of the given arithmetic sequence is given as -555.

Arithmetic progression is the series of numbers that have common differences between adjacent values that are equal.

Geometric progression is a sequence of series whose ratio with adjacent values remains the same.

Here,
Given sequence,
-15,-35,-55,-75,...

From the above sequence,
The first term, a = -15
Common difference d = -35 +15 = -20

nth term is given as,
nth = a + (n - 1)d
nth = -15 -20 (n - 1)

Now put n = 28
28th = -15 -20(28 - 1)
       = -15 - 540
       = -555

Thus, the required 28 th term of the given arithmetic sequence is given as -555.

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To evaluate 5log5 63, use the property of logarithms that states loga b = logc b / logc a. Using a calculator, we find that 5log5 63 ≈ 2.57.

To evaluate 5log5 63, we use the property of logarithms which states that loga b = logc b / logc a. In this case, a = 5 and b = 63. So, 5log5 63 = log10 63 / log10 5. Using a calculator, we find that log10 63 ≈ 1.798 and log10 5 ≈ 0.699. Therefore, 5log5 63 ≈ 1.798 / 0.699 ≈ 2.57. So the correct answer is not listed among the options provided.

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Answer:

1 Pair of Jeans cost $35

1 Shirt costs $21

Step-by-step explanation:

$231 - $133= $98

$133 - $98 = $35 --- Pair of Jeans

$35 × 2 = $70

$133 - $70 = $63

$63/3 = $21 --- Shirt

The cost of each pair of jeans and each shirt can be found by setting up and solving simultaneous equations. The cost of each pair of jeans is $27, and the cost of each shirt is $25.

This problem can be solved using the method of simultaneous equations. We'll first form two equations based on the given information. Let's assume the cost of a pair of jeans is 'x' dollars and the cost of a shirt is 'y' dollars.

Let's simplify the second equation by dividing it by 3, which makes it x + 2y = 77. Subtract this from the first equation to eliminate 'x'. You're left with y = 25. Substitute y = 25 into the simplified second equation to get x = 27. So each pair of jeans costs $27 and each shirt costs $25.

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Step-by-step explanation:

The price of computer  = 850

The price of computer after 2 years = 306

By compound depreciation,

 [tex]Pn = P (1 - \frac{R}{100} ) ^ T[/tex]   ... (i)

where Pn = 306

P = 850

R = rate of interest to be calculated

T = 2( number of years)

substituting the values in equation (1), we get

[tex]306 = 850 (1 - \frac{R}{100} ) ^ 2[/tex]

0.6 = 1 - [tex]\frac{R}{100}[/tex]

R = 40%

The worth after 5 years =

[tex]Pn = 850 (1 - \frac{40}{100} ) ^ 5[/tex]

Pn = 850 (0.077)

= $66.096 = $ 66

The computer be worth after 5 years = $ 66 (option B)

After 5 years, the computer will be worth is $66 (B).

To solve this problem, we'll use the formula for exponential decay, where the rate of decrease is proportional to the value of the computer at that time.

The formula for exponential decay is:

[tex]\[ V(t) = V_0 \times e^{-kt} \][/tex]

Where:

- [tex]\( V(t) \)[/tex] is the value of the computer at time [tex]\( t \)[/tex],

- [tex]\( V_0 \)[/tex] is the initial value of the computer,

- [tex]\( k \)[/tex] is the decay constant, and

- [tex]\( t \)[/tex] is the time in years.

Given:

- [tex]\( V_0 = $850 \)[/tex]

- [tex]\( V(2) = $306 \)[/tex]

We need to find the value of [tex]\( k \)[/tex] using the given information.

[tex]\[ 306 = 850 \times e^{-2k} \][/tex]

Divide both sides by 850:

[tex]\[ \frac{306}{850} = e^{-2k} \][/tex]

Taking the natural logarithm of both sides:

[tex]\[ \ln\left(\frac{306}{850}\right) = -2k \][/tex]

Solve for [tex]\( k \)[/tex]:

[tex]\[ k = -\frac{\ln\left(\frac{306}{850}\right)}{2} \][/tex]

Now that we have [tex]\( k \)[/tex], we can find [tex]\( V(5) \)[/tex]:

[tex]\[ V(5) = 850 \times e^{-5k} \][/tex]

Substitute the value of [tex]\( k \)[/tex] and compute:

[tex]\[ V(5) = 850 \times e^{-5 \times \left(-\frac{\ln\left(\frac{306}{850}\right)}{2}\right)} \][/tex]

[tex]\[ V(5) = 850 \times e^{\frac{5\ln\left(\frac{306}{850}\right)}{2}} \][/tex]

[tex]\[ V(5) = 850 \times \left(\frac{306}{850}\right)^{\frac{5}{2}} \][/tex]

V(5) = 66.61

Therefore, after 5 years, the computer will be worth is  $66.

Answer:

This interval (0.175, 0.225) represents the range of values that the true proportion of U.S. adults that can answer the question of 'which gas makes up the most of the atmosphere?' correctly, can take on, with a confidence level of 95%.

Step-by-step explanation:

Confidence Interval is an interval obtaimed from sample data, for the population proportion. It is an interval of range of values where the true population proportion can be found with a certain level of confidence.

Mathematically,

Confidence Interval = (Sample proportion) ± (Margin of error)

Margin of Error is the width of the confidence interval about the mean (sample proportion).

It is given mathematically as,

Margin of Error = (Critical value) × (standard Error of the sample proportion)

Critical value is obtained from the z-tables or the t-tables depending on which information is available. For distributions where information on the population standard deviation is known or it isn't know but the sample size is large enough for the sample standard deviation can approximate the population standard deviation, the z-tables is used and for those distributions whose population standard deviation information is not known, and sample size isn't large enough, the critical value is read off the t-tables.

The critical value depends on the confidence level for both the z-tables and the t-tables critical value.

The interval obtained now represents the region of values where the true population proportion can exist within, at a certain level.of confidence.

Hope this Helps!!!

Answer:

I would help you, but I can't see the photo. I tried to download it because it says download it but it did nothing, sorry.

Step-by-step explanation:

Answer:

18,11

Step-by-step explanation:

seven is reduce in all terms

Answer:

18, 11

Step-by-step explanation:

just took a test

Answer:

-21/4 + 3s/4

Step-by-step explanation:

Answer:

− 21/ 4 + 3 s/ 4

Step-by-step explanation:

Answer:

Measure of ∠K=180-∠U

Or

Measure of ∠K=1/2m(arc DUC)

Step-by-step explanation:

Given:

DUCK quadrilateral inscribed in circle with center O

To Find:

Measure angle K

Solution:

Here the Quadrilateral in inscribed in a circle with center O named as DUCK

So angle K and  U are opposite to each other

We know that the angle of Quadrilateral inscribed in a circle are supplemenatry angles

Hence

∠U+∠K=180

Or The ∠K=1/2*m∠arc(DUC).

Hence depending on the given value for arc measure or angle of quadrilateral we calculate the angle K

Answer:

angle K = 95 degrees

Step-by-step explanation:

180 - U = K

180 - 85 = K

That's TRUE but I predict by the time your grandchildren are in school we'll have stop teaching that geometric things are sets of points.  That's a bad way to think about things.

Its True a circle is the set of all points in a plane that are equidistant from a fixed point called the center of the circle.

Given that,
A circle is the set of all points in a plane that are equidistant from a fixed point called the center of the circle. Whether it's true or false is to be justified in a statement.

The circle is the locus of a point whose distance from a fixed point is constant i.e center (h, k). The equation of the circle is given by

(x - h)² + (y - k)² = r²

where h, k is the coordinate of the center of the circle on the coordinate plane and r is the radius of the circle.

Here, the distance of the point on the circumference of the circle has a fixed distance from the center.

Thus, it's true a circle is the set of all points in a plane that are equidistant from a fixed point called the center of the circle.

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Answer:

[tex]170(1.3)^{t}[/tex]

Step-by-step explanation:

For this formula it would be exponential growth. The formula for exponential growth is: [tex]y = a(1+r)^{t}[/tex]

a is the initial value

r is the growth rate

t is the number of time intervals that have passed in the given situation

In this problem, you would substitute the r for the given percent (0.3) and substitute the a for 170 as the initial value. The equation would then be:

[tex]170(1.3)^{t}[/tex]

i hope this explanation is helpful

Answer:

I am going to have to go with A. 46,155

Step-by-step explanation:

please mark brainliest :)

Answer: 16,000,000

Step-by-step explanation:

Answer:

16,000,000 beans total.

Step-by-step explanation:

Start with what you're given. Each bag has 20,000 beans, right?

There are, for some unknown, ungodly reason, 800 bags. Okay, great. It's a lot of bags of beans and I don't understand why there needs to be so much, but this is math. Most "related to real-world" problems in math don't make logical sense.

So we've established how many bags there are, and how many beans each bag has. You'll need to multiply those two together to get how many beans there are total. However, 20,000 times 800 is a very ridiculously large number and takes a lot of time. So, how do we make it easier to understand?

We focus on the most important parts.

800 and 20,000 are large numbers, but simple as well. The only digits are 8 and 2, followed by zeroes. Just multiply 8 times 2, and you get 16. Now add the number of zeroes from 800, and the number of zeroes from 20,000, and you'll end up with 6 zeroes.

So your answer should be 16 followed by 6 zeroes, or 16,000,000.

That's a lot of beans.

Answer: 90% decrease

Step-by-step explanation: First determine whether the number is increasing or decreasing. Since it changes from 2,000 to 200, it's going down so it's decreasing.

Now to find the percent decrease, we divide the

amount of change by the original number.

The amount of change is the difference between the two numbers

which in this case is 2,000 - 200 and the original number is 2,000.

[tex]So[/tex] [tex]we[/tex] [tex]have[/tex] [tex]\frac{2,000 - 200}{2,000}[/tex].

2,000 - 200 is 1,800.

So we're left with 1,800/2,000 and dividing

2,000 into 1,800 gives us 0.9.

Remember however that our problem is

asking for a percent, not a decimal.

So we need to write 0.9 as a percent and we can do

that by multiplying it by 100 and adding the percent sign.

So 0.9 becomes 90%.

So when a number changes from 2,000 to 200,

it has decreased by 90%.

Answer:

Both the mean and median are greater for Plot A than for Plot B.

Step-by-step explanation:

Plot A data set is : 4,4,5,5,6,6,7,7,10

mean(Plot A) = 5.7

median(Plot A) = 5.5

Plot B data set is : 4,4,5,5,5,6,6,6,7

mean(Plot B) = 5.1

median(Plot B) = 5

Both the mean and median are greater for plot A than for plot B.

Answer:

A. Both the mean and median are greater for Plot A than for Plot B.

Correct statement, question and plots:

Plot A shows the number of hours ten girls watched television over a one-week period. Plot B shows the number of hours ten boys watched television over the same period of time.  

Television Viewing Hours for a One-Week Period  

Which statement correctly compares the measures of center in the two sets of data?

A. Both the mean and median are greater for Plot A than for Plot B.

B. Both the mean and median are greater for Plot B than for Plot A.

C. Plot A has a greater median than Plot B, but Plot B has a greater mean.

D. Plot B has a greater median than Plot A, but Plot A has a greater mean.

Plots are available below

Source:

Previous question that can be found at brainly

Step-by-step explanation:

As we can see, the number of hours in plot A goes from 3 to 10 with a gap in 8 and 9, while in plot B, goes from 3 to 7, with no gaps.

Let's calculate the mean and media for both plots:

Plot A:

Mean = (3 + 2 * 4 + 2 * 5 + 2 * 6 + 2 * 7 + 10)/10

Mean = 57/10 = 5.7

Median = 5 + 6/2 = 11/2 = 5.5

Plot B:

Mean = (3 + 2 * 4 + 3 * 5 + 3 * 6 + 7)/10

Mean = 51/10 = 5.1

Median = 5 + 5/2 = 10/2 = 5

Mean comparison: 5.7 > 5.1

Median comparison: 5.5 > 5

In consequence, the correct answer is A. Both the mean and median are greater for Plot A than for Plot B.

there’s no question?

Answer:

B. 26568

Step-by-step explanation:

As per table, white golf balls sold at an increasing rate of:

Expected white golf ball to be sold in the year 4:

Expected yellow golf ball to be sold:

Expected total golf balls to be sold in the year 4:

Expected total boxes of golf balls:

Correct answer choice:

Answer:

the answer is 9.9997 ft

Step-by-step explanation:

the equation to find the radius is

r = √(3v / πh)

Answer:

14(1.56) + 18h = 32(1.515)

21.84 + 18h = 48.48

18h = 26.64

h = 1.48 meters

The mean height of the girls in the class is 1.48 meters.

To calculate the mean height of the girls in the class, we will use the information provided about the mean heights of the boys and the entire class. Since we know the mean height of the 14 boys is 1.56 meters, we can find the total height of all boys by multiplying 1.56 by 14, which equals 21.84 meters. For the entire class of 32 students, the mean height is 1.515 meters. Multiplying 1.515 by 32 gives us the total height for the entire class, which is 48.48 meters. To find the total height of the girls, we subtract the total height of the boys from the total height of the class: 48.48 meters - 21.84 meters = 26.64 meters. Since there are 32 students in total and 14 boys, there must be 18 girls. To find the mean height of the girls, divide the total height of the girls by the number of girls: 26.64 meters / 18 girls = 1.48 meters.

Answer:

It falls to the left and falls to the right. You can use Geogebra. There you just type the formula and it makes graph from which you can see the directions

Answer:

B and D

Step-by-step explanation:

they are irrational numbers and fall between the two numbers...

The mean number of minutes his dormmates spent on social media is: 15.5 minutes.

Mean of a data set is the average of the data values in that data set.

Given the data, 13, 0, 14, 36, 18, 12

Mean number of minutes = (13 + 0 + 14 + 36 + 18 + 12)/6

Mean number of minutes = 93/6

Mean number of minutes = 15.5

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Answer:

Probability of getting the correct answer in a "true of false" statement options is 0.5

Step-by-step explanation:

Kindly refer to the attached image for explanations

Answer:

yeah he is right

Step-by-step explanation:

Answer:

A= X,B

B= L,G

C= M,W

The total number of combinations is 12

Answer:

look at pic

Step-by-step explanation:

Answer:

D.  3500(0.10)^t

Step-by-step explanation:

because that's how you get percentage

Answer:

Selling price = $28

Step-by-step explanation:

Cost price = $20

Selling price = ?

Percent markup = 40%.

Percentage markup is the difference between a products selling price and cost as a percentage to the cost.

% mark up = (selling price - cost price) / (cost price) * 100

[(Selling price - 20) / 20 ] * 100 = 40

40 / 100 = (selling price - 20) / 20

0.4 * 20 = selling price - 20

8 = selling price - 20

Selling price = $(8 + 20)

Selling price = $28.

The selling price was $28

Answer: The selling price is $28

Step-by-step explanation: If the CD set was bought at the cost of $20 and sold at a selling price of $20 plus 40% (or 0.4), then we should start by calculating the value of 40% of the cost price, which would then be added to the cost price to arrive at the selling price.

The calculation is as follows;

Mark up = 20 x 0.4

Mark up = 8

Selling price = Cost price + Mark up

Selling price = 20 + 8

Selling price = 28

Therefore the selling price is $28

Answer:

B. a = 15, b = 7, c = 5, d = 10, e = 12  

Step-by-step explanation:

The values that complete the table are a = 15, b = 7, c = 5, d = 10, and e = 12. Therefore, option B is correct.

Given that there are 32 campers in total, and 22 of them can swim, and 20 of them play softball. We also know that 5 campers do not play softball or swim.

We are asked to complete the table, which consists of rows and columns, with the third row and third column showing the totals.

Let's start with the third row. According to the table, the total number of campers who can swim and play softball is a + b. And since we know that 20 campers play softball, we can write:

a + b = 20

Moving on to the third column, the total number of campers who can swim is a + c. We also know that 22 campers can swim, so we can write:

a + c = 22

Now we have two equations and two unknowns, namely a and c. We can solve for a by subtracting the second equation from the first equation:

(a + b) - (a + c) = 20 - 22

Simplifying this expression, we get:

b - c = -2

We also know that 5 campers do not play softball or swim. So the total number of campers who do not play softball is:

32 - 20 = 12

And since 5 campers do not play softball or swim, the remaining 7 campers do not play softball but can swim. Therefore, we can write:

c + d = 7

Substituting the value of d from equation (1), we get:

c + 10 = 7

Solving for c, we get:

c = 5

Now that we know the value of c, we can solve for a using equation (2):

a + c = 22

Substituting the value of c, we get:

a + 5 = 22

Solving for a, we get:

a = 15

Using the value of a, we can solve for b using equation (3):

a + b = 20

Substituting the value of a, we get:

15 + b = 20

Solving for b, we get:

b = 5

Finally, we can solve for e using equation (4):

20 + e = 32

Solving for e, we get:

e = 12

Therefore, the values that complete the table are a = 15, b = 7, c = 5, d = 10, and e = 12.

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Answer:

20 Cookies

Step-by-step explanation:

If Juan has 8 cookies and 8 cookies = 40%, multiply by 2. 16 = 80%. Now we only need 20% more and that will identify how much there are. To do this is just simply divide 8 by 2. 4 is our answer. It's half of 8 meaning half of 40%. So add 16 and 4, you get 20.

P.S

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Faker/Tosrel

The answer is either D or B but it's most likely D sorry if u get this wrong