In the present situation, the equation that best suits the sinusoidal function is given as:
(C) y = -12cos(1/12x)+ 12.
What is the meaning of a sinusoidal function?
A sinusoidal function is a function which oscillates smoothly, on a periodic basis, between high and low values. It is a sine-based function. Such a type of function is known as a sinusoidal function.
The cosine function, on the other hand, is just a horizontal shift of the sine function, can be used as a foundation for the sinusoidal functions.
A mathematical curve also called as the sine wave, a sinusoidal wave or simply a sinusoid, can be described in terms of sine-trigonometric function, whose graph it is. It is a particularly a continuous wave or a smooth periodic function.
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X+y=0,5x+y=4 using substitution method
Answer:
(1, - 1 )
Step-by-step explanation:
x + y = 0 → (1)
5x + y = 4 ( subtract 5x from both sides )
y = 4 - 5x → (2)
substitute y = 4 - 5x into (1)
x + 4 - 5x = 0
4 - 4x = 0 ( subtract 4 from both sides )
- 4x = - 4 ( divide both sides by - 4 )
x = 1
substitute x = 1 into (1) and solve for y
1 + y = 0 ( subtract 1 from both sides )
y = - 1
solution is (1, - 1 )
a magazine publisher mailed a survey to all of its subscribers asking if the magazine is helpful in their daily lives. of those who responded, 78% replied that the magazine was helpful. the proportion that replied that the magazine is helpful is known
The percentage of respondents who said the magazine is useful is referred to as the population parameter of interest.
Is the percentage of respondents who said the publication is useful?The percentage of respondents who said the magazine is useful is referred to as the population parameter of interest.The demographic metric of interest is the percentage of respondents who indicated that the magazine is useful.A population parameter is a metric that quantifies a population numerically or a figure that conveys information about a large group or population.the average body weight of American women in their middle years. All American women in their middle years make up the population, and the parameter is.the typical size of a butterfly. This information about the total butterfly population makes it a parameter.the class X average height. This qualifies as a parameter because it provides information about class X as a whole.The demographic metric of interest is defined as the proportion of respondents who felt the magazine is useful.To learn more about population parameter refer to:
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Which symbol replaces the box to make the statement true? 16÷4+12□4+24÷2
The symbol replaces the box to make the statement true that 16 ÷ 4 + 12 □ 4 + 24 ÷ 2 is an equal sign, so 16 ÷ 4 + 12 = 4 + 24 ÷ 2.
What is expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement.
Given expression:
16 ÷ 4 + 12 □ 4 + 24 ÷ 2
Here calculate the first term
16 ÷ 4 + 12 = 4 + 12 = 16
Calculate the second term
4 + 24 ÷ 2 = 4 + 12 = 16
Thus, the equal sign will replace the box,
Therefore, the symbol replaces the box to make the statement true that 16 ÷ 4 + 12 □ 4 + 24 ÷ 2 is an equal sign.
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I have to plot 5 points, what 5 points do I plot
Answer:
Below
Step-by-step explanation:
Any 5 points you want
pick out 5 values of x say -4 -1 0 3 7
and calculate the value of the corresponding 'y' using the equation....then plot those points
The table shows the proportional relationship between the number of tickets required per game at a carnival.
Games 4 10 16
Tickets 16 40 64
Determine the constant of proportionality.
4
6
12
24
Answer:
6
Step-by-step explanation:
all are divisible by 6 or can be added by six to get the next number
The required value of the contant of proportionality is given as 1/4.
What is proportionality?Proportionality is described as the relationship between two or more sets of values, and whether these values are directly proportional or inversely proportionate to one other.
Here,
Let G be the number of games and T be the number of tickets,
G ∝ T
So,
G = kT
From the table,
4 = 16k
k = 4/16
k = 1/4
Thus, the required value of the contant of proportionality is given as 1/4.
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In triangle XYZ, mZZ = (5m - 15) and the exterior angle to Z measures (7m + 3). Determine the value of m.
Om=6
Om = 8.5
Om = 15
Om = 16
The value of m in the triangle XYZ is 16. option D
How to determine the valueIt is important to note that the sum of angles in a triangle is 180 degrees.
From the information given, we have that;
Angle MZ is the exterior angle = (5m - 15)Angle Z is the interior angle = 7m + 3Then we have that;
Angle MZ + Angle Z = 180
Now, substitute the values into the formula, we have;
(5m - 15) + (7m + 3) = 180°
expand the bracket
5m - 15 + 7m + 3 = 180°
collect like terms
12m - 12 = 180°
12m = 180 + 12
Add the like terms
12m = 192
Make 'm' the subject of formula by dividing both sides by 12, we get;
12m/12 = 192/12
m = 16
The value is 16.
Thus, the value is 16
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Which of the following is not quadratic equation?A.8k-3=12B.9r²-25=0C.x²-5x+3=0D.(2x+5)(x-1)=-6
The equation (A) 8k-3=12 is not a quadratic equation as it is not in the form ax²+bx+c=0.
What is a quadratic equation?A quadratic equation is any algebraic expression that can be expressed in a standard form where x represents an unknown number, a, b, and c represent known values, and where a 0 is true.
The four methods for solving a quadratic issue are factoring, using square roots, completing the square, and the quadratic formula.
Form of a quadratic equation: ax²+bx+c=0
(A) 8k-3=12
Not in form of ax²+bx+c=0.
(B) 9r2 -25 =0
In form of ax²+bx+c=0.
(C) x2 - 5x + 3 = 0
In form of ax²+bx+c=0.
(D) (2x + 5) (x - 1) = - 6
In form of ax²+bx+c=0.
Therefore, equation (A) 8k-3=12 is not a quadratic equation as it is not in the form ax²+bx+c=0.
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what is the term used to denote the process that builds a regression equation one independent variable at a time, starting with the one the most highly correlated and keeping only terms with significant coefficients?
The term used to denote the process that builds a regression equation by testing one variable at a time, starting with the one which is significantly corelated and keeping only the other significant coefficients is known as stepwise regression.
What is stepwise regression?Iteratively building a regression model step by step, stepwise regression entails choosing independent variables to be included in the final model. It entails successively introducing or eliminating putative explanatory factors and assessing statistical significance after each iteration.
Stepwise regression can be accomplished in one of two ways: either by including all potential independent variables in the model and removing those that are not statistically significant, or by attempting each independent variable one at a time and including it in the regression model if it is statistically significant.
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Jose can put together a transmission in 10 hours. Luis can build the same transmission in 8 hours. How long will it take them to build the transmission together?
The total time taken to finish building the transmission if Jose and Luis worked together is 4.44 hours
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the total time required to finish building the transmission if Jose and Luis works together be = A
Now , the equation will be
The time required by Jose to build a transmission = 10 hours
The time required by Luis to build a transmission = 8 hours
If it takes one person 10 hours to build a transmission and another person 8 hours to build the same transmission , working together they could build the transmission even quicker
So ,
If Jose builds the transmission is 10 hours , he builds 1/10th of the transmission in one hour
If Luis builds the transmission in 8 hours , he builds 1/8th of the transmission in one hour
And ,
Together they build the transmission in
1/A = 1/10 + 1/8
where A is the total time required to finish building the transmission if Jose and Luis works together
So , the equation is
1/A = 1/10 + 1/8
1/A = 18/80
Taking reciprocals on both sides of the equation , we get
A = 80/18
A = 40/9
On simplifying the equation , we get
A = 4.44 hours
Therefore , the value of A is 4.44 hours
Hence , The total time taken to finish building the transmission if Jose and Luis worked together is 4.44 hours
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Mark transferred songs from his computer onto his portable music player. He transferred 2 6/7 songs in 1 2/3 minutes. How many songs did he transfer per minute?
A. 7/12 song per minute
B. 1 5/7songs per minute
C. 2 2/3 songs per minute
D.4 16/21 songs per minute
The number of songs that he transferred per minute is 1 5/7 songs per minute (option B).
How many songs did he transfer per minute?In order to determine the number of songs he can transfer in one minute, divide the number of songs transferred in 1 2/3 by the number of minutes.
Division is the process of determining the quotient of two or more numbers. It entails grouping a number into equal groups using another number. The sign that is used to represent division is ÷
Number of songs they want to transfer per minute = 2 6/7 ÷ 1 2/3
20 /7 ÷ 5/3
20/7 x 3/5 = 12/7 = 1 5/7 songs per minute
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Brainliest if you do all questions showing your work.
The solution to each of the given algebraic expressions are;
1) 2n - 2 = 10
2) 12n - 1 = 17
3) 4 * 9 = 36
4) 23 - 8 = 15
5) (3 * 7) + 1 = 22
6) ¹/₆ * 42 = 7
7) 3n - 6 = 70
8) y - 2 = 9
9) x = 5 * 12
10) -48 = -4 * 12
11) -32/-8 = 4.
12) (15 - 3)n = 2
13) (5 + 8)n = 42
14) (12 + 6)/2 = 9
15) -4 = -2(5 - 3)
16) x + (x + 1) = 25
17) (x) + (x + 1) = -3
18) 11 - x = -1
How to solve algebra word problems?1) Two less than twice a number is equal to 10 is expressed as;
2n - 2 = 10
2) 17 is one more than twice a number;
2n - 1 = 17
3) Four times 9 is 36;
4 * 9 = 36
4) Eight less than 23 is fifteen;
23 - 8 = 15
5) One more than 3 times 7 is 22;
(3 * 7) + 1 = 22
6) One sixth of forty two is seven;
¹/₆ * 42 = 7
7) Six less than 3 times a number is equal to seventy;
3n - 6 = 70
8) Two dollars off the regular price of a calculator is $9;
y - 2 = 9
9) A number is equal to five times 12;
x = 5 * 12
10) Negative 4 is a product of the opposite of four and 12;
-48 = -4 * 12
11) Four is the quotient of -32 and -8;
-32/-8 = 4.
12) When 15 minus 3 is multiplied by a number, the product is 2;
(15 - 3)n = 2
13) A number times the sum of five and 8 is 42;
(5 + 8)n = 42
14) 9 is the quotient when 12 + 6 is divided by 2;
(12 + 6)/2 = 9
15) -4 = -2(5 - 3)
16) x + (x + 1) = 25
17) (x) + (x + 1) = -3
18) 11 - x = -1
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Four less than 5 times a number is the same as 26 more than twice the number
The answer is 106 since it is 26 more than twice the number and 4 less than 5 times a number.
write an equation in point-slope form of each line that passes through the given points. (4, 1), (-2, 7)
Step-by-step explanation:
what number multiplied by 3 and subtracted by 2 equals 40
The number multiplied by 3 and subtracted by 2 equals 40 is 14.
Linear Equation:The Equation that is used to find an unknown value is known as Linear Equation. To find an unknown value or quantity, first form a linear equation according to the conditions that are given the problem, here we use variables like x, y, etc. to represent the unknown value.
Here we have
A Number is multiplied by 3 and subtracted by 2 equals 40
Let the number be x
Given that 'x' is multiplied by 3 (3x); subtracted by 2 (3x-2) equals to 40
=> 3x - 2 = 40
Add 2 on both sides
=> 3x - 2 + 2 = 40 + 2
=> 3x = 42
Divide by 3 into both sides
=> 3x/3 = 42/3
=> x = 14
Therefore,
The number multiplied by 3 and subtracted by 2 equals 40 is 14.
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Suppose Juan Pablo has 6.93 kilograms of seed. If it takes 6.3 kilograms of seed to plant one hectare of land, how many hectares of land can be planted
Answer:
1.1 hectares
Step-by-step explanation:
6.93/6.3 = 1.1
He can plant 1.1 hectares of land.
A solid cylinder has a total surface area of 231cm3. Its curved surface area is 2 3 of the total surface area. Find the volume of the cylinder
Answer:
Step-by-step explanation:
The surface area of solid cylinder = 231 cm²
and curved surface area = 2/3 * 231 cm² = 154 cm²
Now, 2πrh = 154 ...........(i)
2πrh+2πr² = 231
Subtracting, 2πr² = 231 - 154 = 77
⇒2 * 22/7 * r² = 77
⇒r² = 77*7/2*22 ⇒ 49/4 ⇒ (7/2)²
so, r = 7/2 cm
Now, from (i),
2 * 22/7 * 7*h/2 = 154
⇒22h = 154 ⇒ 154/22 = 7
and volume = πr²h = 22/7 * 7/2 * 7/2 * 7cm³ ⇒ 539/2 = 269.5 cm²
! if six theta = x/4 where 0 < theta < 90 and 0 < x < 4, then cos theta =
Using Pythagoras theorem If sin tetha = x/4, then cos tetha = √(16-x²)/4
What is Pythagoras theorem?Pythagoras theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“.
The sides of this triangle have been named Perpendicular, adjascent and Hypotenuse. If sin (tetha) = x/4, this means
x = opposite and
4 = hypotenuse
From hypotenuse² = opposite² + adjacent²
4² = x²+y²
y² = 16-x²
y = √ ( 16-x²)
cos (tetha) = adjacent/ hypotenuse
cos (tetha) = √(16-x²)/4
Therefore the value of cos (tetha) = √(16-x²)/4
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the coast guard cutter angelica travels at 30 knots from its home port of coprus christi on a course of 95 for 2 hr and then changes to a course of 185 for 2 hr. find the distance and the bearing from the corpus christi port to the boat.
The boat's distance and bearing from the port regions are as follows;
The boat is located around 157.15 kilometers from the harbor on a bearing of 150°.
In mathematics, a bearing is an angle measured clockwise from the north or y-axis direction.
The Coast Guard cutter travels at a speed of 30 kno
Angelica, a Coast Guard cutter, has a bearing of 95 degrees.
The coast guard goes for 2 hours in the first direction.
The shift in direction of the Coast Guard cutter = 185°
Travel time in the new direction = 2 hours
30 knots equals 55.56 km/hr
The distance traveled in the first direction = 55.56 km/hr = 111.12 km in 2 hours
Distance traveled in the other direction = 55.56 km/hr 2 hours = 111.12 km
According to the accompanying graphic, the figure produced by the Coast Guard cutter's course is an isosceles triangle.
The Pythagorean theorem gives the distance from the port to the position of the boat as l = √(111.122^2 + 111.122^2) ≈ 157.15.
The boat is roughly 157.15 kilometers away from the port.
An isosceles right triangle has 45° base angles.
As a result, the bearing is 95° + 45° = 150°.
The angle between the port and the boat is 150°.
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On July 14, Gracie Paul accepted a $60,000, 6%, 160-day note from Mike Lang. On November 12, Gracie discounted the note at Lend Bank at 7%. What proceeds did Gracie receive? (Use Days in a year table) (Round your answer to the nearest cent. )
Therefore, Gracie will earn $61600 if she waits until December 21. However, she will earn bank discount $61132.87 on November 12.
A bank discount is interest that the bank deducts beforehand in the basic discount note. The maturity value less the bank discount equals the amount owed. The total of the principle and interest due at the conclusion of the time period is the maturity value.
Date of note = 14th July
Face value = $60000
Length of note = 160 days,
Interest rate = 6%
Calculating the interest and maturity value:
Interest = Principal × interest × time
= 60000 × 0.06 × 160/360
= 1600
So the maturity value MV = Face value + interest
= 60000 + 1600
= 61600
2. Calculating discount period:
Note discounted on 12th November
Time till 12th November = 315 days
Time till 14th July = 194 days
So days before note is discount = 315 - 194= 121 days
Length of note = 160 days,
So the discount period = 160 - 121 = 39 days
3 - Bank discount:
Bank discount = MV × Bank discount rate × number of days bank waits till due date
= 61600 × 0.07 × 39/360
= 467.133
4 - Proceeds from bank: Proceeds = MV - Bank discount
= 61600 - 467.133
= 61132.87
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Point W is located at (-2, 3) on a coordinate plane. Point W is reflected over the x-axis to create
point W. Point W' is then reflected over the y-axis to create point W". What ordered pair
describes the location of point W"?
Answer Point W" C
Explain how you determined your answer.
The required coordinate pair for W" is (2,-3)
What is reflection of the point?When a point is reflected over axes, its position changes and sign of coordinates also change.
Given that, Point W is located at (-2, 3) on a coordinate plane. Point W is reflected over the x-axis to create point W'. Point W' is then reflected over the y-axis to create point W".
When a point is reflected over the x-axis, then we know,
(x, y) = (x,-y)
W(-2,3) = W (−2,−3)
And,
When a point is reflected over the y-axis, then we know,
(x, y) = (-x, y)
Therefore, W'(-2,-3) = W" (2,-3)
Hence, the coordinates of the point W" are (2,-3)
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Find a point on the line and the line's slope.
y-5=-2/(x-3)
Answer:
Slope: - 4/3
Point (4,1)
Step-by-step explanation:
hope this helps
7. a hot air balloon travels 40 miles against the wind in the same amount of time that it travels 200 miles with the wind. if the speed of the wind is 20 mph, how fast does the hot air balloon travel against the wind?
The hot air balloon travels 40 miles against the wind in the same amount of time that it travels 200 miles with the wind. Therefore, the rate of the hot air balloon against the wind is 40 miles/200 miles x 20 mph = 8 mph.
1. Calculate the ratio of the distance traveled against the wind compared to the distance traveled with the wind: 40 miles/200 miles = 0.2
2. Multiply the ratio by the speed of the wind: 0.2 x 20 mph = 4 mph
3. The speed of the hot air balloon against the wind is 8 mph.
The hot air balloon is able to travel at a speed of 20 mph when the wind is in its favor. However, when the wind is not in its favor, the hot air balloon must travel against the wind, drastically decreasing its speed. In the same amount of time, the hot air balloon was able to travel 40 miles against the wind while it was able to travel 200 miles with the wind. To calculate the speed of the hot air balloon against the wind, we can use the following formula: Speed = (Distance against the wind/Distance with the wind) x Speed of the wind. In this case, the ratio of the distance traveled against the wind compared to the distance traveled with the wind is 40 miles/200 miles = 0.2. When we multiply this ratio by the speed of the wind, which is 20 mph, we get 4 mph. Therefore, the rate of the hot air balloon against the wind is 8 mph.
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darryl can paint a room in 9 hours. valerie can paint the same room in 15 hours. how long does it take for both darryl and valerie to paint the room it they are working together?
It will take 5.625 hours for both Darryl and Valerie to paint the room if they work together .
In the question ,
it is given that ,
Darryl can paint the room in 9 hours .
So , in 1 hour Darryl can paint 1/9 of the room .
Valerie can paint the room in 15 hours .
So , in 1 hour Valerie can paint 1/15 of the room .
So , the time taken to paint the room together can be calculated using ,
1/t = 1/9 + 1/15
1/t = 5/45 + 3/45
1/t = 8/45
Simplifying further ,
we get ,
t = 45/8
t = 5.625
Therefore , the time taken will be 5.625 hours .
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The rectangular floor of a classroom is 20 feet in length and 30 feet in width.
A scale drawing of the floor has a length of 4 inches. What is the area, in
square inches, of the floor in the scale drawing?
Answer:
Area = 600
Step-by-step explanation:
The area formula for rectangles is length x width. In this equation, the length is 20 and the width is 30, multiplying them together gets us the area of 600.
what is the hypotenuse?
Answer:
20
Step-by-step explanation:
h=hypotenuse. s1=side 1. s2=side 2
h^2 = (s1)^2 + (s2)^2 ==> hypotenuse formula
h^2 = 12^2 + 16^2 => plug in known values
h^2 = 144 + 256
h^2 = 400 ==> simplify
[tex]\sqrt{h^2 = 400}[/tex] ==> take the square root on both sides to remove the power
[tex]\sqrt{h^2}[/tex] = [tex]\sqrt{400}[/tex]
h = 20
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which of the following, when included, distorts the effectiveness of charting data points? a) too many series b) too many data points c) too much variance in the values of the data d) aggregates
Aggregates is distorts the effectiveness of charting data points. So the option d is correct.
In the given question, we have to select which of the following, when included, distorts the effectiveness of charting data points.
Charts are a quick and efficient way to communicate information to your audience. If the charts are properly created, that is.
A lot goes into creating the ideal visual material, and it's simple to let some components slip. Charts that are hurriedly created are frequently more detrimental than beneficial.
We've compiled a list of useful do's and don'ts to bear in mind while building your own data representations, whether they take the shape of straightforward bar charts and graphs or more intricate interactive visualizations, in order to help you prevent this.
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Question 1
What is their rate of change (speed) in Section A? Remember to include units.
Question 2
What is the rate of change of (speed) in section B? Remember to included units
Question 3
What is their rate of change of (speed) in section D (hours 7-10)? Remember to include units
Question 4
During which section was the person moving at the highest speed? What was their speed? Defend your answer
Question 5
During which section did the person travel the farthest? How did they travel?
Question 6
BONUS: write a short (paragraph) scenario that tells the story about where on the graph came from. You can be as creative as you want!
Please only comment if you will give me all these answers thank you!
The rate of change or the speed of the different sections and the distance answers are below;
1) 2 m/s
2) 0 m/s
3) 3 m/s
4) Section C
5) Section A
How to solve distance time graph?1) The formula for the slope is;
Slope = (y₂ - y₁)/(x₂ - x₁)
Taking two coordinates in section A, we can find the slope which gives us the speed;
Speed = (50 - 0)/(25 - 0)
Speed = 2 m/s
2) Section B shows that the speed is constant and as such the rate of change of speed 0 m/s
3) Rate of change of section C is;
Speed = (80 - 50)/(70 - 60)
Speed = 3 m/s
4) The section that the person was moving at the highest speed is 3 m/s which is section C.
5) The section that the person travelled the farthest is section A which was 50 meters.
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Christopher invested $1500 at 5% compounded semi-annually for 10 years. What is the amount of the investment at maturity?
The amount of the investment at maturity is $2443.341
Compound interest is the interest on the initial principal plus the interest which has been accumulated.
Given,
Principal amount (P)= $1500
Rate of interest(R)= 5% = 5/100 = 0.05%
Time(T)= 10 years
The formula for annual compound interest is as follows:
FV = P (1+ r/m)^mt
Where:
FV - the future value of the investment, in our calculator it is the final balance
P - the initial balance (the value of the investment)
r - the annual interest rate (in decimal)
m - the number of times the interest is compounded per year (compounding frequency)
t - the number of years the money is invested for
FV = 1500*(1+0.05/1)^(10*1) = 2443.341
The value of the investment after 10 years will be $2443.341.
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3 pencils and a ruler cost £1.51
6 pencils cost £1.92
Work out the cost of 1 ruler in pounds (£)
Answer:
The answer is in the image I attached to this response. Let p = the cost of 1 pencil, and let r = the cost of 1 ruler.
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what are 3 combinations of coins with the value of 30% of a dollar
The 3 combinations of coins with the value of 30% of a dollar are 2 dimes + 1 Nickel + 5 Pennies, 1 dime + 2 Nickels + 10 Pennies, 3 Nickels + 1 dime + 5 Pennies.
How many types of coins are there?
There are 4 types of coins. They are Quarter, Nickel, dime, and Penny.
1 Quarter = 25 cent
1 dime = 10 cents
1 Nickel = 5 cents
1 penny = 1 cent
Now calculate 30 percentage of a dollar.
1 dollar = 100 cents.
30% of 100 cents = (30/100) × 100 = 30 cents.
2 dimes + 1 Nickel + 5 Pennies = 20 cents + 5 cents + 5 cents = 30 cents
1 dime + 2 Nickels + 10 Pennies = 10 cents + 10 cents + 10 cents = 30 cents
3 Nickels + 1 dime + 5 Pennies = 15 cents + 10 cents + 5 cents = 30 cents
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