A Pupil got to school by 7:30 am and left by 2:20pm. How many minutes did he spend in the school? Leave your answer in minutes.​

bro just use a calculator, how hard is it to make some calculation for real..

anyway the answer is A. 1080

The value of trig in ratios as fraction are, sin X = 45/24 , cos W = 17/8

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

The triangle is shown in figure.

Now, we can find all the values as;

⇒ sin X = Perpendicular / Hypotenuse

⇒ sin X = 45 / 24

And, we get;

⇒ cos W = Base / Hypotenuse

⇒ cos W = 51 / 24

⇒ cos W = 17 / 8

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The speed of the boat in still water is 12mikes per hour and the speed of the current is 6milesper hour

Speed is defined as, the rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.

speed = distance /time

speed with downstream = 90/5 = 18miles per hour

speed against down stream = 90/15 = 6 miles per hour

represent the speed of the boat in still water by x and the speed of the downstream by y

therefore x+y = 18 equation 1

x-y = 6 equation 2

subtract equation 2 from 1

2y = 12

y = 12/2 = 6miles/hour

substitute 6 for x in equation 1

x + 6 = 18

x = 18-6 = 12 miles/hour

therefore the speed of the boat with in still water is 12miles per hour and the speed of the current is 6 miles per hour

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Answer:  Ryan should sell his CDs for $13 to maximize his revenue.

Step-by-step explanation:

To find the price at which Ryan should sell his CDs to maximize his revenue, we need to use the information provided about the relationship between price and sales, and the formula for revenue (price x quantity sold).

Step 1: Identify the relationship between price and sales. We know that a $1 increase in the price of a CD leads to a drop of 5 CDs per week in sales.

Step 2: Create an equation that relates price, quantity sold, and revenue. Let P be the price of a CD, Q be the quantity sold, and R be the revenue. Then, we have R = P x Q

Step 3: Create a table that shows the relationship between price, quantity sold, and revenue.

Price Quantity Sold         Revenue

10       80                            800

11       75                              825

12      70                                     840

13     65                                        845

14     60                                         840

15     55                                        825

16     50                                   800

17     45                                  785

18     40                                720

19     35                                      665

20     30                                              600

Step 4: Identify the price that maximizes revenue. From the table we can see that the revenue is maximum at $13 which is 845 and this is the price at which Ryan should sell his CDs to maximize his revenue.

Therefore, Ryan should sell his CDs for $13 to maximize his revenue.

The rate of change is $20 per week while the initial value is $650

An equation is an expression composed of variables and numbers linked together by mathematical operations.

The slope intercept form of a linear equation is:

y = mx + b

Where m is the slope (rate of change) and b is the y intercept.

Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Debra has been adding money.

Given the equation:

y = 20x + 650

The y intercept is $650 and the slope is $20 per week

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in word problems

each means multiply

3 tables each day means

3 times x or 3x

2 tables each day means

2x

the day that Miguel and Asia have the same number of tables means

38-3x=28-2x

x=10

y=38-3x

y=28-2x

y = 8

graph

y=38-3x

y=28-2x

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The measures of x and y in the congruent polygons are:

x = 7

y = 8

Congruent polygons are two or more polygons with the same number of sides and the same length for each side. In other words, they are polygons that have the same shape and size.

Two polygons are congruent if and only if it is possible to superimpose one polygon over the other by using a combination of translation, rotation and reflection. Congruent polygons have the same area and perimeter.

Therefore:

m<E = m<A

Substitute the values:

4y - 4 = 28

4y = 28 + 4

4y = 32

4y/4 = 32/4

y = 8

m<F = m<B

Substitute:

10x + 65 = 135

10x = 135 - 65

10x = 70

10x/10 = 70/10

x = 7

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The quantity of ribbon that Ali started with was 16/21 feet, based on the mathematical operation of addition.

The basic mathematical operations include addition, subtraction, division, and multiplication.

In the addition operation, two or more addends are added to obtain a result called the sum or total using the equation symbol (=) and the addition operand (+).

The quantity of ribbon attached to the rearview mirror = 2/7

The remaining quantity of ribbon after the attachment = 10/21

The quantity of ribbon Ali started with = 16/21 (2/7 + 10/21)

Thus, using the addition operation, we can conclude that Ali started with 16/21 feet of ribbon.

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[tex]3\dfrac{1}{4}[/tex] as an improper fraction.

To convert a mixed number into a fraction, you'll first have to multiply the whole number(3) by the denominator(4) and add that to the numerator(1).

The denominator will stay the same.

[tex]3\dfrac{1}{4}[/tex]

[tex]\dfrac{3\times4+1}{4}[/tex]

[tex]=\fbox{$\dfrac{13}{4} $}[/tex]

Answer:

6

Step-by-step explanation:

Given logarithmic expression:

[tex]\log_{4}\left(4\right)+\log_{4}\left(16\right)+\log_{4}\left(64\right)[/tex]

Rewrite 16 as 4² and 64 as 4³:

[tex]\implies \log_{4}\left(4\right)+\log_{4}\left(4\right)^2+\log_{4}\left(4\right)^3[/tex]

[tex]\textsf{Apply the log power law}: \quad \log_ax^n=n\log_ax[/tex]

[tex]\implies \log_{4}\left(4\right)+2\log_{4}\left(4\right)+3\log_{4}\left(4\right)[/tex]

[tex]\textsf{Apply log law}: \quad \log_aa=1[/tex]

[tex]\implies 1+2(1)+3(1)[/tex]

Simplify:

[tex]\implies 1+2+3[/tex]

[tex]\implies 3 + 3[/tex]

[tex]\implies 6[/tex]

The mean and standard deviation based on the information given will be 13gb and 0.4 gb.

On average, smartphone owners have 13 GB of storage, with a 3 GB standard deviation. 50 smartphone owners are chosen at random as a sample from the general population.

Remember that the sampling distribution resembles the normal distribution if the sample size is large enough (n 30), according to the central limit theorem.

The sampling distribution's mean in this instance is given by because the sample size is sufficient (n = 50).The mean of the sampling distribution is 13 gb

The standard deviation will be:

= 3 / ✓50

= 3 / 5

= 0.4 gb.

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Complete question

Suppose that among the population of smartphone owners with 16 GB of storage, the mean amount of storage used is 13 GB and the standard deviation is 3 GB. A consumer research group regularly takes random samples of 50 of these customers and calculates the mean amount of storage Calculate the mean and standard deviation of the sampling distribution x bar.

Answer:

(-7,3)

Step-by-step explanation:

Answer: To determine this percentage, we would need to know the current market share for Category A and the desired market share goal of 50%. With this information, we could calculate the difference between the current market share and the desired market share and express that difference as a percentage of the current market share. Without this information, I am unable to provide an exact percentage.

Step-by-step explanation:

The measure of the arcs in relationship to the central angles measures are:

4. 40°

5. 50°

6. 90°

7. 180°

8. 140°

9. 130°

10. 220°

11. 230°

12. 320°

13. 180°

14. 310°

15. 270°

The relationship is that the measure of the central angle is the same as the measure of the arc it subtends in a circle.

4. Measure of arc AB = measure of central angle AOB

Substitute

Measure of arc AB = 40°

5. Measure of arc DC = measure of central angle DOC

Substitute

Measure of arc DC = 50°

6. Measure of arc BC = 180 - 40 - 50 = 90°

7. Measure of arc AED = 180°

8. Measure of arc BD = 90 + 50 = 140°

9. Measure of arc AC = 40 + 90 = 130°

10. Measure of arc BAD = 180 + 40 = 220°

11. Measure of arc ADC = 180 + 50 = 230°

12. Measure of arc ACB = 360 - 40 = 320°

13. Measure of arc ABD = 180°

14. Measure of arc CED = 360 - 50 = 310°

15. Measure of arc BAC = 40 + 180 + 50 = 270°

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Answer: 818quuquqiqi$

Step-by-step explanation: because i dont wnna waycj brainly ads haha ok so you see this is shbwbwbwhjwwkkw because hwuqopqpoqiwnndncixo9nbccssioakaka.

Answer:

y = -8

Step-by-step explanation:

the answer you chose is correct!!

The value of unknown side length x in simplest radical form is 4√37.

Option B is the correct answer.

Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

We have,

Two right triangles.

Applying the Pythagorean theorem in the bigger triangle.

We get,

25² = 7² + Length²

25² = 49 + Length²

Length² = 625 - 49

Length² = 576

Length = √576

Length = 24

Now,

Applying the Pythagorean theorem in the smaller triangle.

We get,

x² = 4² + 24²

x² = 16 + 576

x² = 592

x² = 16 x 37

x = √(16 x 37)

x = √(4² x 37)

x = 4√37

Thus,

The value of x is 4√37.

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Answer:

$768 would be the discounted amount in dollars

Step-by-step explanation:

1920 - 1152= 768

Answer:

  y = 3x -1

Step-by-step explanation:

You want the equation of the line through the points (0, -1) and (1, 2), among others.

The y-value when x=0 is the y-intercept. The table shows you it is -1.

The slope is the difference in y-values when x-values increase by 1. For the first two points in the table, the y-value shows an increase of ...

  2 -(-1) = 3

This means the slope is 3.

The slope-intercept equation of a line is ...

  y = mx +b . . . . . . . where m is the slope, and b is the y-intercept

For your line, we have determined m=3, b=-1, so the equation is ...

  y = 3x -1

The ordered pairs are (1,0), (2,6/5),(3,12/5)

The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations. In other words, the solution set of the system of linear equations is the set of all possible values to the variables that satisfies the given linear equation.

Given here: The equation as y = 6x/5 - 6/5

putting (1,0) in the equation we get 6×1/5-6/5=0

Similarly we can find the ordered pair as y = 6/5x - 6/5

Hence, The ordered pairs are (1,0), (2,6/5),(3,12/5)

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Answer:

49 weeks

Step-by-step explanation:

y = mx + b

y is the total amount saved

x is the number of weeks

24.99 = .4x + 5.40  Solve for the number of months   Subtract 5.40 from both sides

24.99 - 5.40 = .4x + 5.40 -5.40

19.59 = .4x     Divide both sides by .4

[tex]\frac{15.99}{.4}[/tex] = [tex]\frac{.4x}{.4}[/tex]

48.975 = x

We cannot have 48.975 week, so at 49 weeks Davis will have enough money.

Answer:

49

Step-by-step explanation:

The angle complementary to an acute angle A is always acute and smaller than 90 degrees, while the angle supplementary to angle A is always larger than 90 degrees, they cannot be equal since they are adding up to 90 degrees and 180 degrees respectively.

A complementary angle is a pair of angles that add up to 90 degrees. Two angles are said to be complementary if the sum of their measures is 90 degrees. The two angles are called complementary angles because they "complete" a right angle.

An angle is considered acute if it measures less than 90 degrees. A complementary angle is an angle that, when added to another angle, will sum up to 90 degrees. So, if angle A is acute, then its complement angle will also be acute.

On the other hand, an angle supplementary to angle A is an angle that, when added to angle A, will sum up to 180 degrees.

So, an angle complementary to an acute angle A is always acute and smaller than 90 degrees, while an angle supplementary to angle A will always be larger than 90 degrees. They can't be equal since they are adding up to 90 degrees and 180 degrees respectively.

For example, if angle A measures 60 degrees, its complementary angle will measure 30 degrees (90 - 60 = 30) and its supplementary angle will measure 120 degrees (180 - 60 = 120).

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Answer:

y = 11

Step-by-step explanation:

Answer:

77

Step-by-step explanation:

Answer: top right

Step-by-step explanation:

It says decrease by 7 which mean subtract (-) and times 3 mean multiply by 3 (x3)

Figure J is rotated 90° clockwise and then translated by 3 units toward the right.

A point, line, or mathematical figure can be converted in one of four ways, and each has an effect on the object's structure and/or position.

Rotation does not change the shape and size of the geometry. But changes the orientation of the geometry.

The translation does not change the shape and size of the geometry. But changes the location.

Figure J is rotated 90° clockwise and then translated by 3 units toward the right.

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Answer:

4/5

Step-by-step explanation:

rise over run

In order to differentiate between objects, one must first recognise their distinctions.

In order to differentiate between objects, one must first recognise their distinctions. The difference between the chocolate sauce and the spicy bean dip, for instance, could be difficult to see if the party lighting is low. It is possible to distinguish between various.

To distinguish between objects being compared, to demonstrate, or to discover: On the basis of colour, religion, or country of origin, we do not make distinctions amongst our personnel. The majority of customers can easily distinguish between the cereal from our brand and that of our main rival.

-(x²yz³)³.(xyz)²​+z = (xy²z)². x²yz³ + (x²yz³)³.(xyz)²​.

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The derivative of the expression, x²yz³ + (x²yz³)³ with respect to z = (xy²z)² is:

d/dz (x²yz³ + (x²yz³)³) = d/dz (x²yz³) + d/dz ((x²yz³)³)

= 3x²y²z³ + 2x³yz⁴ + 3 * (x²yz³)² * (3x²y²z³ + 2x³yz⁴)

The derivative of the first term, x²yz³, with respect to z = (xy²z)² can be found using the chain rule:

d/dz (x²yz³) = d/dy (x²yz³) * dy/dz + d/dx (x²yz³) * dx/dz

= 3x²yz² * yz + 2x¹yz³ * xy²z

= 3x²y²z³ + 2x³yz⁴

The derivative of the second term, (x²yz³)³, with respect to z = (xy²z)² can be found using the chain rule and the power rule:

d/dz ((x²yz³)³) = d/dy (x²yz³)³ * dy/dz + d/dx (x²yz³)³ * dx/dz

= 3 * (x²yz³)² * (3x²yz² * yz + 2x¹yz³ * xy²z)

= 3 * (x²yz³)² * (3x²y²z³ + 2x³yz⁴)

Finally, the derivative of the expression, x²yz³ + (x²yz³)³ with respect to z = (xy²z)² is:

d/dz (x²yz³ + (x²yz³)³) = d/dz (x²yz³) + d/dz ((x²yz³)³)

= 3x²y²z³ + 2x³yz⁴ + 3 * (x²yz³)² * (3x²y²z³ + 2x³yz⁴)

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Answer:

Step-by-step explanation:

Problem 1

The resolution formula for arcseconds is 1 radian = 206265 arcseconds.

To convert 1.22 radians to arcseconds, we can use the conversion ratio of 1 radian = 206265 arcseconds: 1.22 radians x 206265 arcseconds/radian = 252438.3 arcseconds

Problem 2

a. Literal equation: D = (Wavelength / (2* arcsecond))

Variable to solve for: D (diameter of camera lens)

b. Chlorophyll reflects green light. The wavelength of green light on the electromagnetic spectrum is approximately 550 nanometers.

c. D = (Wavelength / (2* arcsecond))

D = (550 x 10^-9 meters / (2* 6 x 10^-6 radians))

D = (550 x 10^-9 meters / 12 x 10^-6 radians)

D = (550 / 12) x 10^-9 meters / 10^-6 radians

D = 45.83 x 10^-3 meters or 0.04583 meters

Problem 3

The graph would have wavelength in nanometers on the x-axis and diameter of lens or mirror in meters on the y-axis.

The graph would start at 100 nanometers and end at 10,000 nanometers on the x-axis and the y-axis would start at 0 and end at the diameter of the lens or mirror needed to obtain a resolution of 1 arcsecond.

The graph would show that as the wavelength increases, the diameter of the lens or mirror needed to obtain a resolution of 1 arcsecond would decrease. At a wavelength of 10,000 nanometers (10 microns), the diameter of the camera would be 0.04583 meters.

The spatial resolution of a telescope depends on the size of the telescope's aperture and the wavelength of light being detected.

The spatial resolution of a telescope has an inverse relationship with the wavelength of light being detected and the telescope's diameter. As the wavelength increases, the spatial resolution decreases, and as the diameter of the telescope increases, the spatial resolution increases.

The spatial resolution for our eyes is about 1 arcminute.

Spatial resolution is related to remote sensing in that it refers to the ability of a sensor to distinguish between two objects that are close together. A higher spatial resolution allows for more detailed information to be gathered from an image.

The GOES (Geostationary Operational Environmental Satellite) detects weather patterns, temperature, humidity, and other atmospheric conditions. It uses remote sensing technology to gather and transmit data to meteorologists for weather forecasting and monitoring.

Answer:

Problem 1 - If 1 radian = 206265 arcseconds, what is the resolution formula for arcseconds? Convert 1.22 Radian to arcseconds using ratio. Show your work with units.

Problem 2 - A biologist wants to study deforestation with a satellite camera with a pixel resolution of 10 meters/pixel, which at the orbit of the satellite corresponds to an angular resolution of 6 arcseconds. You have already determined the value for arc seconds from problem number one. To measure the loss of plant matter, she detects the reflection by the ground of chlorophyll, which is the most intense at a wavelength of ___________ (1 nanometer = 10-9 meters) [Use the Electromagnetic Spectrum Below to fill in the blank]. To determine the wavelength, use the electromagnetic spectrum visible light section; what color should chlorophyll reflect? Determine the wavelength using the diagram below. Calculate: What is the diameter of the camera lens that will ensure this resolution at the orbit of the satellite?

There are several steps you need to show for calculating the diameter of the camera lens to receive full credit for problem 2

a. Write the literal equation for the problem. What variable are you solving for? It would help if you manipulated the formula to solve this problem. Show your manipulation in steps.

How to solve literal equations help here.

b. What color should chlorophyll reflect? _____________ Where is the wavelength on the spectrum as far as nanometers? ___________ (this is the wavelength you will use for calculation). Not everyone will have the same wavelength, but it should be similar.

c. Use your literal equation and solve the diameter of the camera lens (You should show all work, and your answer should have one significant figure with units in your response). Circle the answer.

Problem 3 –Since you have already determined the diameter of a lens required for an object with your nanometers from problem #2, you can use this direct relationship to determine the necessary diameter to 10 microns (10 microns = 10,000 nanometers). Choosing the diameter of the lens depends on the wavelength. It would help if you constructed a graph showing the diameter of the lens or the mirror in meters needed to obtain a resolution of 1 arcsecond from far-ultraviolet wavelengths of 200 nanometers to infrared wavelengths of 10 micrometers.

Question: Construct a graph that shows the diameter of a lens or mirror needed to obtain a resolution of 1 arcsecond from far-ultraviolet wavelengths of 100 nanometers to infrared wavelengths of 10 microns (10,000 nanometers). From orbit, a human subtends an angle of 1 arcsecond and emits infrared energy at a wavelength of 10 microns. How large would the camera be to resolve a human by his heat emission?

To solve this problem, you will need to determine

1. Set up graph: Which variable would be on X and Y? Which variable is dependent/independent? Use units!

2. Label the graph with the appropriate scale, including a title.

3. Plot point versus draw a line of best fit starting at zero to determine the answer.

1. What does the spatial resolution of a telescope depend on?

2. The spatial resolution of a telescope is proportional to the wavelength of light being detected divided by the telescope's diameter. Is this a direct or inverse relationship? How does that relate to wavelength versus lens diameter?

3. What is the spatial resolution for our eyes?

4. How is spatial resolution related to remote sensing? (from Module 3 reading assignment)

5. How is the GOES satellite related to this lesson? What exactly does the GOES detect?