What is 80 divided by 7640

Step-by-step explanation:

If he read 10 % , then he has 90 % to go...and this 90% is 54 pages

x = number of pages in book

90% * x  = 54

.90x = 54

x = 54/.90 = 60 pages in book

Answer:

It’s 20

Step-by-step explanation:

The margin of error for an 80% confidence interval found to be (200, 240) is: 20.

Confidence interval lies between the lower bound and upper bound and it is symmetric. The mean of the upper and lower bounds is the margin of error.

Given an 80% confidence interval with the bound (200, 240):

Margin of error = (240 - 200)/2

Margin of error = 20

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Since, Alice ate 5 cookies and 2 carrots for a total of 590 calories; bob ate 3 cookies and 4 carrots for a total of 410 calories. Therefore, In a cookie there are 110 calories.

A calorie is a unit of energy that food and drink provide. we can usually find out how many calories are listed in foods, and wearables like the best fitness trackers let you monitor how many calories you're burning in different activities. Certain foods, such as processed foods, tend to be high in calories. Other foods, such as fresh fruits and vegetables, tend to be low in calories. there is not. Calories are needed to give you enough energy to move, keep warm, grow, work, think, and play. Our circulation and digestion also need to work well with the energy we get from calories.

Let x = calories in cookies.

     y = calories in carrots.

Now, according to the question:

     5x + 2y = 590                   --------------------------------------- (1)

     3x + 4y = 410                    -------------------------------------- (2)

Multiplying equation(1) by 3 and equation(2) by 5:

         15x + 6y = 1770                       ---------------------------(3)

         15x + 20y = 2050                   ---------------------------(4)

Solving we get:

    y = 280/14

or, y = 20 units.

Putting the value of y = 20 in equation (2)

    3x + 4y = 410

⇒  3x + 4 × 20 = 410

⇒ 3x = 410 - 80

⇒ x = 330/3

⇒ x = 110 Units

Therefore, the calories of cookies is 110 units .

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The probability that a randomly selected day will have a group trades total within 85,000 of the mean is 0.1328.

What is the probability about?

In the question given, the Mean (u) is said to be = 3421439

Therefore since Standard deviation = 508638.08

Note that:

z = x-u/sd

So:

P(u - 85000 <= x <= u + 85000)

u = 3421439

We insert the formula into the equation and it will be

= P(3421439 - 85000, 3421439 + 85000)

= P(3336439,  3506439)

= (3336439 - 3421439) / 508638.08, 3506439-3421439) / 508638.08)

= prob(-0.1671 and 0.1671 (So check the column under the z table)

So:

= 0.5664 - 0.4336

= 0.1328

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Answer:

The correct values for points A, B, C, and D on a number line going from negative 2 to positive 2 in increments of 1 are:

A = negative 2

B = negative 3/4

C = negative 1/4

D = 1/4

This can be determined by noting that each mark on the number line represents a distance of 1/4, and by counting the number of marks to the right or left of the given points. For example, point B is 1 mark to the right of negative 2, which means it is located at negative 2 + 1/4 = negative 3/4. Similarly, point C is 1 mark to the left of negative 1, which means it is located at negative 1 - 1/4 = negative 1/4. The other points can be determined in the same way.

Step-by-step explanation:

Answer:

It is A the 1st one

Step-by-step explanation:

A = negative 2, B = negative 1 and three-fourths, C = negative 1 and one-fourth, D = negative one-fourth

Answer:

Use colon method

Step-by-step explanation:

So it is more easy

The sides of the quadrilateral arranged from longest to shortest are CD, AB, DA, and BC.

We have,

To arrange the length of the sides of the quadrilateral from longest to shortest, we need to calculate the length of each side of the quadrilateral using the distance formula:

Distance Formula:

If (x1, y1) and (x2, y2) are two points in a plane, then the distance between them is given by:

d = √((x2 - x1)² + (y2 - y1)²)

Using the distance formula, we can calculate the length of each side of the quadrilateral as follows:

AB = √((4 - (-5))² + (5 - 5)²) = 9

BC = √((2 - 4)² + (0 - 5)²) = √(29)

CD = √((-5 - 2)² + (-2 - 0)²) = √(74)

DA = √((-5 - (-5))² + (5 - (-2))²) = 7

Therefore,

The sides of the quadrilateral arranged from longest to shortest are CD, AB, DA, and BC.

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Step-by-step explanation:

To determine the missing values in the Venn diagram, we can use the information from the problem to set up a system of equations. Let's assign variables to each section of the diagram:

X = number of students who play tennis only

Y = number of students who play soccer only

Z = number of students who play volleyball only

W = number of students who play tennis and soccer only

y = number of students who play tennis and volleyball only

Using the information from the problem, we can set up the following equations:

X + W + 3 = 21 (21 students play tennis)

Y + W + 4 = 16 (16 students play soccer)

Z + y + 5 = 19 (19 students play volleyball)

W + 3 = 3 (3 students play soccer and tennis)

y + 5 = 5 (5 students play volleyball and tennis)

Solving for one variable in terms of the others, we can substitute into the other equations:

X = 21 - W - 3

Y = 16 - W - 4

Z = 19 - y - 5

Substituting into the equation for W, we find:

W + 3 = 3

W = 0

Substituting W = 0 into the equations for X and Y:

X = 21 - 0 - 3 = 18

Y = 16 - 0 - 4 = 12

Finally, we can substitute X, Y, and W into the equation for Z to find:

Z = 19 - y - 5

Z = 19 - 5 - 5 = 9

So the missing values in the Venn diagram are:

Soccer: 12 students

Volleyball: 9 students

Tennis: 18 students

Soccer & Tennis: 0 students

Volleyball & Tennis: 5 students

Volleyball & Soccer: 4 students

Note that the number of students who play none of the three sports is not explicitly stated in the problem, but it can be calculated as:

13 = total number of students - (X + Y + Z + W + y)

13 = total number of students - (18 + 12 + 9 + 0 + 5)

13 = total number of students - 44

So there are 57 total middle school students

If his average rate was 22 mph faster on the trip home, then Michael lives 132 miles away from the mountains.

Let's assume that the distance from Michael's home to the mountains is "d" miles. We can now use the formula for average rate to set up two equations, one for the trip to the mountains and one for the trip back home.

For the trip to the mountains, we have:

d = Average Rate (on the way to the mountains) x 6 hours

For the trip back home, we have:

d = Average Rate (on the way back home) x 4 hours

We are also given that Michael's average rate on the trip back home was 22 mph faster than his average rate on the trip to the mountains. We can represent this as:

Average Rate (on the way back home) = Average Rate (on the way to the mountains) + 22 mph

First, we can rearrange the equation for the trip to the mountains to solve for the average rate on the way to the mountains:

Average Rate (on the way to the mountains) = d / 6 hours

Substituting this into the equation for the trip back home, we get:

d = (d / 6) x 4 + (d / 6 + 22) x 4

Simplifying this equation, we get:

d = (2d / 3) + (d / 3 + 11) x 4

d = (2d / 3) + (4d / 3 + 44)

Multiplying through by 3, we get:

3d = 2d + 4d + 132

Simplifying this equation, we get:

d = 132 miles

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Answer:

300 students

Step-by-step explanation:

Hope this answer helps you :)

Have a great day

Mark brainliest

30 students brought papers.

Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction, such as one-half, eight-fifths, or three-quarters, indicates how many components of a particular size there are when stated in ordinary English.

Given

3/4 th of 40 brought papers

students brought paper = 3/4 *40 = 3*10 = 30

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Answer:phone A

Step-by-step explanation:

phone A is the cheapest

The correct option is option A , such that inequality is x - 3y < 5.

What are the inequalities ?

Inequalities are the expressions in which both sides are not equal and the equal sign in between is replaced by less than , greater than, etc.

We know that the slope intercept form of equation is given by y = mx + c , where m is the slope and c is the y - intercept.

In the graph , the upward sloping line has x and y intercepts of 5 and -3.

So its equation in slope intercept form is given by ,

- 3y = - x + 5

And the inequality with that boundary line is given by ,

- 3y < - x + 5

or

x - 3y < 5

Therefore , the inequality represented by graph is x - 3y < 5 or option A is correct.

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Answer:

40,60,80

Step-by-step explanation:

2x+3x×4x=180

9x=180

x=20

2x=40

3x=60

4x=80

2 hours will pass before they meet.

"Information available from the question"

In the question:

Aaron starts riding a bike at a rate of 3 mi/h on a road toward a store 20 mi away.

Zhang leaves the store when Aaron starts riding his bike, and he rides his bike toward Aaron along the same road at 2 mi/h.

Now, According to the question:

Total distance = 20mi

Aaron starts riding a bike at a rate of  = 3mi/h

Zhang rides his bike toward Aaron along the same road at  = 2mi/h

Let y be the number of hours for them to meet.

The expression is given as

3y + 2y = 20

solving for y, we have

5y = 20

y = 20/5

y = 4hrs

Therefore, 2 hours will pass before they meet.

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The correct answer is option A which is y = 25x + 100.

Given the following:

To join a local square dancing group, Jan has to pay a $100 sign-up fee plus $25 per month

We need to write an equation for the cost (y) based on the number of months.

To solve the above problem, the answer is;a. y = 25x + 100

Explanation; Let's break down the problem

The $100 sign-up fee is a fixed cost that is added only once to the monthly fee which is $25. Thus the equation for the cost (y) based on the number of months can be expressed as; y = 25x + 100 where:y is the cost for the number of monthsx is the number of months

Therefore the correct answer is option A which is;y = 25x + 100.

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To join a local square dancing group,

Jan has to pay a $100 sign-up fee plus $25 per month.

The equation for the cost (y) based on the number of months is

y = 25x + 100,

where x is the number of months.

Option A is the correct equation for the cost based on the number of months.

Writing the equation:

y = 25x + 100

Where:

y = Cost based on the number of months

x = Number of months

Therefore, when Jan has been part of the local square dancing group for 1 month, the total cost will be:

$25 * 1 + $100 = $125

And if Jan has been a part of the group for 4 months, then the total cost would be:

$25 * 4 + $100 = $200

Therefore, option A is the correct answer.

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The interval [3,5] is split into ten equal subintervals: 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 . The area under the curve is approximately 269.2 square units when the interval from x = 3 to x = 5 is divided into ten subintervals (Ax = 0.2).

Given that, y = 4x²Interval from x = 3 to x = 5 is divided into n = 5 subintervals (Ax = 0.4) and n = 10 subintervals (Ax = 0.2).Now, let's find the height of each rectangle: Subinterval width (Ax) = (b - a) / n(a) Ax = 0.4, n = 5 subintervals

Thus, Ax = (5 - 3) / 5 = 0.4

Therefore, the interval [3,5] is split into five equal subintervals: 3.0 3.4 3.8 4.2 4.6 5.0.

The height of each rectangle will be y_i = 4(x_i)² where x_i = 3.0, 3.4, 3.8, 4.2, 4.6.

The height of the first rectangle y_1 will be:y_1 = 4(3.0)² = 36and so on. The area of each rectangle will be (height) x (width) and hence the area of all the rectangles will be the sum of the areas of all the rectangles.

Area of first rectangle A_1 = y_1Ax = 36x0.4 = 14.4Similarly, the area of all the rectangles will be, A_2 = y_2Ax + y_3Ax + y_4Ax + y_5AxA = A_1 + A_2 = 14.4 + 26.24 = 40.64.

Therefore, the area under the curve is approximately 40.64 square units when the interval from x = 3 to x = 5 is divided into five subintervals (Ax = 0.4).(b) Ax = 0.2, n = 10 subintervals

Thus, Ax = (5 - 3) / 10 = 0.2

Therefore, the interval [3,5] is split into ten equal subintervals: 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0

The height of each rectangle will be y_i = 4(x_i)² where x_i = 3.0, 3.2, 3.4, 3.6, 3.8, 4.0, 4.2, 4.4, 4.6, 4.8

The height of the first rectangle y_1 will be:y_1 = 4(3.0)² = 36and so on. The area of each rectangle will be (height) x (width) and hence the area of all the rectangles will be the sum of the areas of all the rectangles.

Area of first rectangle A_1 = y_1Ax = 36x0.2 = 7.2Similarly, the area of all the rectangles will be, A_2 = y_2Ax + y_3Ax + y_4Ax + y_5Ax + y_6Ax + y_7Ax + y_8Ax + y_9Ax + y_10AxA = A_1 + A_2 = 7.2 + 9.76 + 13.44 + 17.92 + 22.24 + 27.2 + 33.16 + 39.36 + 45.76 + 52.64 = 269.2

Therefore, the area under the curve is approximately 269.2 square units when the interval from x = 3 to x = 5 is divided into ten subintervals (Ax = 0.2).

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Answer:

1850 cents

Step-by-step explanation:

1000 pennies = 1000 cents (Multiply by 1)

100 nickels = 500 cents (Multiply by 5)

10 dimes = 100 cents (Multiply by 10)

10 quarters = 250 cents (Multiply by 25)

Total:

1000 + 500 + 100 + 250 = 1850 cents

The following probability which  is true: P(1.5 - .02 < X < 1.5 + .02) = 0.68 for the distribution of log-cell counts of red blood cells for women.

Given that the distribution of log-cell counts of red blood cells for women age 25-30 is approximately normally distributed with µ = 1.5 cells/microliter and σ = 0.1 cells/microliter.

In this, the probability of the Z score for a range is asked.

The value of Z is given by:

Z = (X - µ)/σZ

= (1.5 - 1.5)/0.1

= 0

In the Z table, the value of 0 is 0.5.

So, the following probability will be found:

P(1.5 - .02 < X < 1.5 + .02) = P(-0.2 < Z < 0.2)

We know that 0.2 value is in between 0 and 0.25 in the Z table.

P(1.5 - .02 < X < 1.5 + .02) = P(-0.2 < Z < 0.2)

= P(Z < 0.2) - P(Z < -0.2)

= 0.5793 - 0.4207

= 0.1586

≈ 0.16

Therefore, the option which is true is: P(1.5 - .02 < X < 1.5 + .02) = .68.

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Answer: Final elevation of butterfly = 4m

Final elevation for diver = -11m

Final elevation for whale= 2m

Final elevation for fish = -20m

Step-by-step explanation:

Final elevation= Initial poistion + Change.

A butterfly starts at 20 m and changes -16 m.

Final elevation = 20m +(-16m)

= 20-16 m   [(-)(+)=(-)]

= 4m

A diver starts at 5 m and changes -16 m.

Final elevation = 5m + (-16) m

= 5m- 16 m  [(-)(+)=(-)]

= -11 m

A whale starts at -9 m and changes 11 m.

Final elevation = (-9m)+11m

= 11m- 9m   [-a+b=b-a]

= 2m

A fish starts at -9 meters and changes -11 meters

Final elevation = -9+(-11) m

= (-9-11) m     [(-)(+)=(-)]

=-(9+11)  m   [-a-b=-(a+b)]

=-20m

Hence, Final elevation of butterfly = 4m

Final elevation for diver = -11m

Final elevation for whale= 2m

Final elevation for fish = -20m

The correct model to support the claim that more than 70% of students at De Anza College will transfer is the One sample Z test of proportion.

To determine whether more than 70% of students at De Anza College will transfer, we need to compare the proportion of students who transfer in a sample to the claimed proportion of 70%. Since we have a sample size of 450 students, the One sample Z test of proportion is appropriate.

The One sample Z test of proportion is used to compare a sample proportion to a known or hypothesized proportion. In this case, the known or hypothesized proportion is 70%, and we want to test if the proportion in the sample is significantly greater than 70%. The test involves calculating the test statistic, which follows a standard normal distribution under the null hypothesis.

By conducting the One sample Z test of proportion on the sample of 450 students, we can calculate the test statistic and determine whether the proportion of students who transfer is significantly different from 70%. If the test statistic falls in the critical region, we can reject the null hypothesis and support the claim that more than 70% of students at De Anza College will transfer.

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Answer:

mean: 28.73

median: 30

Mode: 42

Range: 36

Step-by-step explanation:

Took the test on edge2020

Answer:

Students from Grover Middle School are recycling aluminum cans. The table shows the total number of cans brought in each school day for a period of six weeks. They collected a total of 862 cans. Use the drop-down menus to define the terms.

Mean:  

✔ 28.73

Median:  

✔ 30

Mode:  

✔ 42

Range:  

✔ 36

Step-by-step explanation:

Correct answers

Step-by-step explanation:

It is given that,

Volume of the cylindrical can 1 is 2 litres and that of cylindrical can 2 is 6.75 litres. The diameter of the smaller can is 16 cm. We need to find the diameter of the larger can.

The formula of the volume of a cylinder is given by :

\(V=\pi r^2h\)

So,

\(\dfrac{V_1}{V_2}=\dfrac{r_1^2}{r_2^2}\)

Diameter, d = 2r

\(\dfrac{V_1}{V_2}=\dfrac{(d_1/2)^2}{(d_2/2)^2}\\\\\dfrac{V_1}{V_2}=(\dfrac{d_1^2}{d_2^2})\)

V₁ = 2 L, V₂ = 6.75 L, d₁ = 16 cm, d₂ = ?

\(\dfrac{2}{6.75}=(\dfrac{16^2}{d_2^2})\\\\d_2=29.39\ cm\)

So, the diameter of the larger can is 29.39 cm.

In this situation, interval measurement is being employed as the measurement level.

As the height of each student can be measured on a continuous scale with equal intervals between the values. It's important to note that the teacher may have rounded the measurements to the nearest unit, which would make it a discrete measurement.

Interval measurement is a level of measurement in which the values are measured on a continuous scale and have equal intervals between them, but there is no true zero point. This means that the difference between any two values on the scale is meaningful and consistent, but it is not possible to say that one value is "zero" or has no quantity of the measured attribute.

For example, measuring temperature in degrees Celsius or Fahrenheit is an example of interval measurement. In this case, the difference between 10 and 20 degrees is the same as the difference between 20 and 30 degrees, but there is no true zero temperature - a temperature of 0 degrees does not mean the absence of heat.

Another example of interval measurement is measuring time in minutes or hours. The difference between 10 minutes and 20 minutes is the same as the difference between 20 minutes and 30 minutes, but there is no "zero" point in time - even if nothing is happening, time continues to pass.

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a. Probability of a standard normal variable being between 0 and 0.60 is 0.2257.

b. Probability of a standard normal variable being between -1.65 and 0 is 0.4505.

c. Probability of a standard normal variable being greater than 0.30 is 0.3821.

d. Probability of a standard normal variable being greater than or equal to -0.35 is 0.6368.

e. Probability of a standard normal variable being less than 2.03 is 0.9798.

f. Probability of a standard normal variable being less than or equal to -0.80 is 0.2119.

Probability is the study of the chances of occurrence of a result, which are obtained by the ratio between favorable cases and possible cases.

a. P(0 ≤ z ≤ 0.60) = 0.2257

Using a standard normal table or calculator, we can find that the probability of a standard normal variable being between 0 and 0.60 is 0.2257.

b. P(-1.65 ≤ z ≤ 0) = 0.4505

Using a standard normal table or calculator, we can find that the probability of a standard normal variable being between -1.65 and 0 is 0.4505.

c. P(z > 0.30) = 0.3821

Using a standard normal table or calculator, we can find that the probability of a standard normal variable being greater than 0.30 is 0.3821.

d. P(z ≥ -0.35) = 0.6368

Using a standard normal table or calculator, we can find that the probability of a standard normal variable being greater than or equal to -0.35 is 0.6368.

e. P(z < 2.03) = 0.9798

Using a standard normal table or calculator, we can find that the probability of a standard normal variable being less than 2.03 is 0.9798.

f. P(z ≤ -0.80) = 0.2119

Using a standard normal table or calculator, we can find that the probability of a standard normal variable being less than or equal to -0.80 is 0.2119.

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Answer:

The answer is 15!

Step-by-step explanation:

225 divided by 15 is 15! Hope this helps! :)

Answer: 8.40 dollars worth of intrest

Step-by-step explanation:

1. The measure of <A = 36

2. The measure of <B = 63

3. The measure of <C = 71

4. The measure of <D = 99

1. The angles are in relation of alternate Interior angle.

So, x + 24 = 3x

2x = 24

x= 12

So, the measure of <A = 3x = 36

2. The angles are in relation of Corresponding angle

10x - 27 = 7x

3x = 27

x =9

So, the measure of <B = 90 - 27 = 63

3. The angles are in relation of Corresponding angle

5x + 1= 6x - 13

-x = -14

x =14

So, the measure of <C = 70 + 1 = 71

4. The angles are in relation of Alternate Exterior angle

6x + 3 = 4x + 39

2x = 36

x= 15

So, the measure of <D = 60 + 39 = 99

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The total surface area is 121.8yd^2 and the lateral surface area is 79.8yd^2.

121.8 - 79.8 = 42

To identify outliers in a dataset, we can use the interquartile range (IQR) and the concept of fences. The formula used to calculate the fences is as follows:

Lower Fence = Q1 - 1.5 * IQR

Upper Fence = Q3 + 1.5 * IQR

Where Q1 is the lower quartile, Q3 is the upper quartile, and IQR is the interquartile range (Q3 - Q1).

In this case, the lower quartile (Q1) is 14.4 and the upper quartile (Q3) is 14.8.

The interquartile range (IQR) can be calculated as:

IQR = Q3 - Q1 = 14.8 - 14.4 = 0.4

Using the formula, the lower fence is:

Lower Fence = 14.4 - 1.5 * 0.4 = 14.4 - 0.6 = 13.8

And the upper fence is:

Upper Fence = 14.8 + 1.5 * 0.4 = 14.8 + 0.6 = 15.4

Now, we can compare each data point in the dataset to the fences. If a data point is below the lower fence or above the upper fence, it is considered an outlier.

Looking at the given data: 10, 13.7, 13.9, 14.4, 14.4, 14.5, 14.5, 14.6, 14.7, 14.7, 14.7, 14.9, 15.1, 15.5, 16.1

None of the data points are below the lower fence (13.8) or above the upper fence (15.4), so there are no outliers in this dataset.

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