The wavelength for radio waves with frequency 3 × 10⁹ Hz is 0.1 m.
What's the relation between frequency and wavelength of electromagnetic waves?For electromagnetic waves travelling in vaccum, the product of frequency and wavelength is the speed of light in vaccum.Mathematically, frequency × wavelength = 3×10⁸ m/s (which is speed of light)So, wavelength= 3×10⁸/ frequencyWhat's the wavelength of radio wave with frequency 3×10⁹ Hz ?Wavelength of the radio wave= 3×10⁸/3×10⁹ = 0.1 m
Thus, we can conclude that the wavelength of the radio wave with frequency of 3 × 10⁹ Hz is 0.1 m.
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Help on b please! Thanks
Answer: he could've gotten a 60
Step-by-step explanation:
if you follow the line up from 50 on paper 1, it fits onto a 60 for paper 2
How many 1/12s must you add to get 1/12
Answer:
Step-by-step explanation:
One 1/12 is equal to 1/12, so you do not need to add any other fractions of 1/12 to get 1/12.
1/12 + 0 = 1/12
You can think of it in another way, if you want to add a certain number of fractions to obtain 1, you just need to add 12 of 1/12s to get 1, not one.
select all expressions that are equivalent to -3/4( 32 - 4f)
24 - 3f
3f - 24
-24 + 3f
8 - f
3(-8 +f)
Answer:
-24 + 3f
3f - 24.
3(-8 + f)
Step-by-step explanation:
-3/4( 32 - 4f)
= -3/4 * 32 - 3/4 * -4f
= -3*8 + 3f
= -24 + 3f.
= 3f - 24
= 3(-8 + f)
Find the measures of an exterior angle and an interior angle given a regular polygon with 14 sides. Round to the nearest tenth, if necessary.
Answer:
The sum of the exterior angles is 360. 360/14 = 25.7 would be the measure of one exterior angle.
The sum of the interior angles is 1260. 1260/14 = 154.3 would be the measure of on interior angle.
Step-by-step explanation:
(n-2)180
n is the number of sides
(14-2)180
12(180) 1260
This is the sum of the interior angles of the polygon.
1260/14 = 154.3 Is the measure of one angle.
Please Help Me!!!!!!!!!!
Thank you !!!!!!!!!!!!11
The proportional equation that is on the graph can be written as:
y = 0.83*x
How to find the graphed proportional equation?Remember that a general proportional equation is written as:
y = k*x
Where k is the constant of proportionality.
To find the value of the constant of proportionality, we need to identify one point that lies on its graph. For example, we could use the point (0.6, 0.5)
Where x = 0.6
y = 0.5
Replacing that in the general proportional equation we will get:
0.5 = k*0.6
0.5/0.6 = k
0.83 = k
Then the proportional equation is:
y = 0.83*x
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How would you graph y =- 1 2x 2?
Your response should be the first point on your graph because x = 0 on the y-axis.
What is graphs?Mathematicians use graphs to logically convey facts or values using visual representations or charts. A graph point will typically reflect a relationship between two or more things. Nodes, or vertices, and edges make form a graph, a non-linear data structure. Glue together the nodes, often referred to as vertices.
that a line's equation is y = mx + b, where m is its slope and b is its y-intercept. Your initial point should be at -2 on the y-axis to start. Go up 1 and over 2 for your next point because your slope is 1/2 (rise/run). Continue along like this, and your points will become clear.
The x values you have can also be plugged in to determine your y-values. Your first point is that y = 1/2(2) - 2 = 1 - 2 = -1. (2,-1). This ought should appear on your graph as well.
Your response should be the first point on your graph because x = 0 on the y-axis.
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A building company ued 24 worker to prepare a building ite. The ite meaured 30 acre and the work wa completed in 10 day. The company i aked to prepare another ite meaured 45 acre. Thi work ha to be completed in 15 day. Calculate the leat amount of worker the company hould employ for thi work
6 Need to increase the number of workers.
Now, According to the question:
A building company used 24 worker to prepare a building site.
The site measured 30 acre and the work was completed in 10 day.
The company is asked to prepare another site measured 45 acre.
This work has to be completed in 15 days.
To find the least amount of worker the company should employs for this work.
=> 30 ÷ 10 = 3 Daily worked of 24 workers.
=>3 ÷ 24 = 1/8 Daily worked of 1 worker.
=> 45 ÷ 12 = 15/4 The amount of work that the project needs to complete each day
=> 15/4 ÷ 1/8 = 30 Number of workers needed.
=> 30 - 24 = 6 Need to increase the number of workers.
Hence, 6 Need to increase the number of workers.
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if theta is an angle in standard position and it’s terminal side passes through the point (21, -20), find the exact value of cot theta in simplest radical form
For the given data, ∅ is the given angle in standard position, terminal side passes through (21, -20) then the exact value of cot ∅= ( - √41/ 20 ) in simplest radical form.
What are trigonometric identities?Trigonometric identities are the functions that include trigonometric functions such as sine, cosine, tangents, secant, and, cot.
For the given angle ∅ (theta) in standard position:
Terminal side of ∅ is passes through the point ( 21, -20 )
( 21, -20) represents ∅ is in the second quadrant.
In second quadrant sine in positive and cosine is negative.
Base is negative and altitude is positive.
Base = 21
Altitude = -20
Using Pythagoras theorem,
Hypotenuse² = (21)² + (-20)²
⇒ Hypotenuse = √41
Cot ∅ = - √41/20 ( simplest radical form )
Then the exact value of
Cot ∅ = ( - √41/ 20 ) in simplest radical form.
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linda saves 25 dollar evry month in her saving account she took out 100 dollars
The number of months that it would take for Linda to replenish the amount she took out is 4 months.
How to find the number of months ?The number of months it would take Linda to make back the $ 100 that she took from her savings account will depend on the amount that she saves every month.
This amount is $ 25 per month.
The number of months it would take for Linda to replenish the $ 25 would therefore be:
= Amount taken out of account / Amount saved per month
= 100 / 25
= 4 months
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Rest of the qyestion is:
How many months will it take Linda to replenish the amount she took out of her savings account ?
A mirror is placed 35 feet from the base of a waterfall by a hiker. The hiker walks backwards until they are 7.5 feet from the mirror. Determine how tall the waterfall is if the hiker is 6 feet tall.
45 ft
38 ft
28 ft
24 ft
Answer:
Step-by-step explanation:
The answer is 28 ft
Happy Paws charges $18.00 plus $4.50 per hour to keep a dog during the day. Woof Watchers charges $12.00 plus $5.75 per hour. Complete the equation and solve it to find for how many hours the total cost of the services is equal. Use the variable h to represent the number of hours. The equation is . The total cost of the services will be equal at hours.
HELP ME PLEASE!
Answer:
This is just a basic mathematical function in which 18.00$ is the starting cost of Happy Paws service and they charge 4.50$ an hour, and we can represent this with [tex]18.00$ + 4.50h = C[/tex].
C is the total cost and h represents the number of hours that took place.
Now looking at Woof Watchers, the starting cost is 12.00$ and they charge 5.75$ an hour, we can also represent this with the equation [tex]12.00 +5.75h=C[/tex].
Now we can figure out the answer the long way or the short way.
The short way is a lot more simple, so I will use that.
The short way is plugging these equations into a graphing calculator.
After that, the number of hours they both babysit to have equal total costs is 4.8 hours or 4 hours and 48 minutes, and the total cost for both services after 4.8 hours will be approximately 40$ or to be exact, 39.60$
17+44
[tex]10 + 51[/tex]
What is the solution
Answer :
17+44 = 61
10+51= 61
I have no idea about this.
Can anyone suggest any approach?
Answer:
Step-by-step explanation:
translate
chapter 7.1.6 puzzle core connections algebra
The exponential function is y = 1200(1.04)^t and the investment amount after 16 years is $2247.58.
What is exponential function?
The formula for an exponential function is f(x) = a^x, where x is a variable and a is a constant that serves as the function's base and must be bigger than 0.
Jayden invests $1,200 in a savings account. Each year, the value increases by 4%.
Let t = time in years
Let y = amount of money invested in savings account
Start with $1200 and each year add 4% interest to the amount in the bank.
1st year: Interest = 1200 × (0.04) = $48
This is added to the previous amount -
= $1200 + $1200 × (0.04)
= $1200 (1+0.04)
= $1200 (1.04)
= $1248
2nd year: Previous amount + interest on the previous amount
= $1248 (1+0.06)
= $1248 (1.06)
= $1297.92
So, the exponential formula becomes -
y = 1200(1.04)^t
Now, to find the value of investment after 16 years, substitute t = 16.
y = 1200(1.04)^t
y = 1200(1.04)^16
y = 1200(1.87298125)
y =$2247.58
Therefore, the value of investment after 16 years is $2247.58.
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please help me answer this question!
The following rule describes the relationship between x and y.
Rule: Multiply x by 4 to get y.
Complete the table for the given rule.
X Y
0 __
1 __
2 __
................ ................................
How do you say table of 4?
A table can be read from top to bottom or left to right. When reading a table across a row, you should read the data from left to right.
what is sequence ?In mathematics, a sequence is a list of items that is in a particular order (or events). It has members and is comparable to a set (also called elements, or terms). The amount of ordered elements determines how long the sequence is (potentially infinite). The four basic types of sequences that you should be knowledgeable about are arithmetic sequences, geometric sequences, quadratic sequences, and special sequences. A number sequence is a collection of integers connected by a pattern. If you understand the rule, you can determine the subsequent numbers in the sequence. In this case, there is a 6 difference between each number. As a result, the rule for this sequence is to add 6 each time.
given
A table can be read from top to bottom or left to right. When reading a table across a row, you should read the data from left to right.
There are four black animals in total in the Cats and Dogs Table (2 + 2 = 4). The numbers in the row directly to the right of the term "Black" are those, as you can see.
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The total price of a shirt and a cap is $12. If the price of the shirt was doubled and the price of the cap was three times its original price, the total price of a shirt and a cap would be $26. The following system of equations models this scenario: x + y = 12 2x + 3y = 26 What is the price of each shirt and cap? The price of a shirt is $7, and the price of a cap is $5. The price of a shirt is $8, and the price of a cap is $4. The price of a shirt is $9, and the price of a cap is $3. The price of a shirt is $10, and the price of a cap is $2.
Answer:
x = price of shirt = $10
y = price of cap = $2
Step-by-step explanation:
x = price of shirt
y = price of cap
(1) x+y = 12
(2) 2x+3y = 26
x = 12-y substitute this into equation 2
2(12-y) + 3y = 26
24 - 2y + 3y = 26
y = 26-24 = 2 substitute this into equation 1
x+2 = 12
x = 12-2 = 10
Answer:
x = price of shirt = $10y = price of cap = $2
Find the equation of the line
The equation of the line is y = -3x + 16
What is the equation of a line?The general equation of a line is expressed as;
y = mx + c
Given that;
y is a point on the y-axism is the slope of the linex is a point on the x -axisc is the intercept of the line on the y-axisFrom the diagram shown, the coordinates of the line is expressed as;
(3, 7) and (2.5, 3)
The intercept. c = -3
Substitute the values
7 = -3(3) + c
expand the bracket
7 = -9 + c
collect like terms
c = 7 + 9
c = 16
The equation of the line is then given as;
y = -3x + 16
Hence, the equation is y = -3x + 16
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Can the sides of a triangle have lengths 3 6 and 7?
Answer:
No
Step-by-step explanation:
3+6 is 9 which is greater than 7 so no it can not be a triangle
Answer:
For three lengths to form a triangle, the sum of two of the sides has to be more than the length of the third line. 3,6,8 or 3,6,7 will form triangles.
Step-by-step explanation:
Three college students are planning to share a 3-bedroom, batth apartment near the campus. The rent is
$1,475 per month. The three bedrooms measure 12 by 10, 10 by 112 and 12 by 126 im. How
could they family divide the cast of the ent? Explain your reasoning
The required rent is divided by the family as $456, $456, and $574.56.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
here,
Total rent = $ 1475
The total area of the place = 12× 10 + 10×11.2 + 12 × 12.6 = 383.2 units
Now,
Rent per square units = 1475/ 383.2 = $3.8
Now,
rent of bedroom with measure 12 by 10 = 12 × 10 × 3.8 = $456
rent of bedroom with measure 10 by 11.2 = 10 × 11.2 × 3.8 = $456
rent of bedroom with measure 12 by 12.6 = 12 × 12.6 × 3.8 = $574.56
Thus, the required rent is divided by the family as $456, $456, and $574.56.
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a farmer planted 320 acres of one variety of wheat and one160 acres of a second variety. He also planted 40 acres of milo, and he has 440 acres that will lie fallow (not be planted) this year. What percent of his land di he plant in wheat? Round to the nearest percent
Percent of land planted with wheat is 50% of total land.
What is percentage?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,
a farmer planted
320 acres of one variety of wheat
160 acres of a second variety of wheat.
He also planted 40 acres of milo,
and he has 440 acres that will lie fallow
Total land farmer has = 320 + 160 + 40 + 440 = 960 acres
Land planted with wheat = 320 + 160 = 480 acres
Percentage of land with wheat
= (land planted with wheat/ total land)× 100
= 480/960 × 100
= 0.5 × 100
= 50%
Hence, 50% of total land is planted with wheat.
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Anyone who genius apin math? Help me, ty
Answer: B -3
Step-by-step explanation
-3/4 my teacher would say rise over run, run means x axes and rise is y axes to get 2 to 8 you need 6 if you times -3/4 by 2 you would get -6/8 6 is x +2 from (5,2) you would get 8 so (m,8) then -8 +5 is -3 creating (-3,8)
How do you solve complex fractions?
To solve complex fractions there are two methods -
1 - Divide the numerator by the denominator by multiplying the numerator by the reciprocal of the denominator and then simplify further if necessary.
2 - Multiply the numerator and denominator of the overall complex fractions and then simplify further if necessary.
What is a complex fraction?A rational expression with a fraction in the numerator, denominator, or both is referred to as a complex fraction.
There are two ways to solve a complex fraction -
method 1 : Take an example - (1/3-1/4)/(1/8+1/2)
step1; If necessary, combine the denominator and numerator into a single fraction.
Add the numerator -
=1/3-1/4
=(4-3)/12
=1/12
Add the denominator -
=1/8+1/2
=(1+4)/8
=5/8
Combine back to form a complex fraction -
=(1/12)/(5/8)
Step 2: Multiply the numerator by the denominator's reciprocal, then divide the result by the denominator.
Step 3: Simplify the rational expression if necessary.
=(1/12)×(8/5)
=8/60
=2/15
Method 2: Take an example - [(2x+1)/(x^2-25)]/[(4x^2-1)/(x-5)]
Step 1 - Divide the LCD of the smaller fractions by the numerator and denominator of the total complex fractions.
(x^2-25)=(x+5)(x-5)
The denominator of the denominator’s fraction has the following factor -
(x-5)
Using the highest exponent and combining all the other factors, we arrive at the LCD shown below for all the little fractions -
(x+5)(x-5)
By multiplying the LCD by the numerator and denominator -
=[{(2x+1)/(x+5)(x-5)}×(x+5)(x-5)]/[{(2x+1)(2x-1)/(x-5)}×(x+5)(x-5)]
=(2x+1)/(2x+1)(2x-1)(x+5)
Step 2 - Simplify the rational expression if necessary.
=(2x+1)/(2x+1)(2x-1)(x+5)
=1/(2x-1)(x+5)
Therefore, there are two methods to solve complex fractions.
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How do I change my UCS icon from 3D to 2D in Autocad?
In AutoCAD, you can change the UCS icon from 3D to 2D by following these steps:
Type "UCSICON" in the command line and press Enter.In the UCS Icon dialog box, select "2D Wireframe" from the drop-down menu.Click OK to close the dialog box and apply the change.What is Autocad?AutoCAD is a commercial computer-aided design and drafting software application.
Alternatively, you can also change the UCS icon to 2D by typing "UCSICON" in the command line, then pressing the F6 key. This will toggle the UCS icon between 2D and 3D.
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What is the table of 13 to 15?
Therefore , the solution of the given problem of table comes out to be 15 to 20 table are given as follows : 14,28,42,56,70,84,98,112,126 and 140
Describe a table.A statistical list is a collection of numbers that shows the outcomes of a computation with numerous inputs. Data is made up of descriptions and numbers and is arranged in rows and columns. The table and indeed the pattern of 10 are easily recalled. In numerical order, the numbers are 2, 4, 6, 8, 10, 12, 14, 16, 18, then 20. Value mapping is used to show how multiple data pieces are related to one another. Any science class can benefit from including the values table.
Here,
Given :
=> 13,26,39,52,65,78,91,104,117 and 130
=> 14,28,42,56,70,84,98,112,126 and 140
=> 15,30,45,60,75,90,105,120,135 and 150
Therefore , the solution of the given problem of tables comes out to be 13 to 15 table are given as follows : 14,28,42,56,70,84,98,112,126 and 140
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The area of the South China Sea i 6. 963 × 106 km2. The area of the Artic Ocean i 1. 4056 × 107 km2. Find the total area. Write the final anwer in cientific notation with the correct number of ignificant digit
So the total area of the South China Sea and the Arctic Ocean is 2.10286 x 107 km2
To find the total area of the South China Sea and the Arctic Ocean, you would add their individual areas together.
The formula for finding the total area is:
Total Area = Area of South China Sea + Area of Arctic Ocean
By applying this formula we get:
Total Area = 6.963 × 106 km2 + 1.4056 × 107 km2
Total Area = 2.10286 x 107 km2
So the total area of the South China Sea and the Arctic Ocean is 2.10286 x 107 km2. The final answer is correct and has correct number of significant digits as per the given figures.
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Is the meaning of 9?
The number 9 is a numerical digit used in many numeral systems. It is the highest single-digit number and has no specific meaning in and of itself.
Write about meaning of 9.The meaning of 9 may vary depending on the context in which it is used. For example, in mathematics, 9 is a composite number, meaning it can be divided by numbers other than itself and 1. In numerology, the number 9 is considered to be a powerful, spiritual number and is often associated with universal love, selflessness, and completion. In other cultures, 9 may hold different meanings or symbolism.
If we check the single digit series we will find the 9 is the 10[tex]th[/tex] and last digit in single digit series.
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Complete question is: What is the meaning of 9?
Place the numbers in order from least to greatest.
= -1050 = 25 = 80 = -800
Answer:
-1050 = -800 = 25 = 80
Step-by-step explanation:
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
1) look at the your numbers and find the negatives. they always are the SMALLEST.
2) as you can see on the line above, there's the middle and from there negative numbers go to the left and positive numbers go to the right.
3) the bigger negative numbers are the smaller they are, super confusing ik
Please help me answer this question.
Verify the identity for trigonometric function attached. Thanks
Step-by-step explanation:
[tex] \frac{ \cot(x) - 1 }{ \cot(x) + 1} \\ \cot(x) = \frac{1}{ \tan(x) } \\ (\frac{1}{ \tan(x) } - 1) \div ( \frac{1}{ \tan(x) + 1} ) \\ multiply \: though \: by \: \tan(x) \\ \tan(x) \times ( \frac{1}{ \tan(x) } - 1 ) \div \tan(x) \times ( \frac{1}{ \tan(x) } + 1) \\ = 1 - \tan(x) \div 1 + \tan(x) \\ \frac{ \cot(x) - 1}{ \cot(x) + 1 } = \frac{1 - \tan(x) }{1 + \tan(x) } [/tex]