The rate at which the x-coordinate is changing is 3√3 units per second .
In the question ,
it is given that
the equation of the particle moving in the circular orbit is x²+y²=16
given the y coordinate decreases at 3units per second
So, dy/dt = -3.
to find the rate at which the x-coordinate is changing , we will differentiate the given equation.
Differentiating the equation x²+y²=16 with respect to t , we get
d/dt(x²+y²) = d/dt(16)
2x(dx/dt) + 2y(dy/dt) = 0
2x(dx/dt) = -2y(dy/dt)
Dividing both sides by 2 ,
we get ,
x(dx/dt) = -y(dy/dt)
[tex]\frac{dx}{dt} =\frac{-y(\frac{dy}{dt}) }{x}[/tex]
As the particle is passing through the point (2,2√3) , So, the point will satisfy the equation.
Substituting the value of x=2 , y=2√3 and dy/dt= -3 ,
we get ,
dx/dt = ((-2√3)*(-3))/2
= (6√3)/2
= 3√3
Therefore , the rate at which the x-coordinate is changing is 3√3 units per second .
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Write 4.1012 in words. A four and ten twelve ten thousandths B four and one thousand twelve ten thousandths C four and one thousandths twelve ten thousandths D four point one zero one two
Writing 4.1012 in words will be represented as D. four point one zero one two.
How to illustrate the information?It should be noted that writing in words simply means spelling or calling out of the numbers that are given.
Based on the information, it should be noted that (.) is illustrated as a point when calling out the decimal numbers. Other values include:
4 = four
1 = one
0 = zero
2 = two
Therefore, based on the illustration, the correct option is D.
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Answer:
B
Step-by-step explanation:
he's wrong
Several years ago, Melissa bought some gold at a price of $1,430 per ounce. When she
went to sell it, the gold was worth 30% more than it was when she purchased it. What
was the new value of the gold?
The new value of gold was $1859 per ounce.
How to calculate profit amount?
Finding profit is simple using this formula: Total Revenue - Total Expenses = Profit.
Price in which Melissa bought gold per ounce = $1,430
Given that, Melissa sell it when the gold price is 30% more than when she purchased it.
Price in which Melissa sell gold per ounce = $ 1,430 + 1,430×30%
= $ 1,430 + 1,430×[tex]\frac{30}{100}[/tex]
= $ 1,430 + 429
= $ 1,859
Hence, the new value of gold was $1859 per ounce.
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A. All real numbers are in the range of this function.
B. The domain for this function is all real numbers.
C. The domain for this function is the set (-5).
D. This graph is not a function because the value of y is the same for
every value of x.
E. The range for this function is the set {-5).
Answer:
Step-by-step explanation:
whoops, does anyone know how to delete an answer?
"I NEED HELP PLS" The following figure is made of 1 triangle and 2 rectangles.
Find the area of each part of the figure and the whole figure.
Figure Area (square units)
Rectangle A
Triangle B
Rectangle C
Whole figure
Answer:
Step-by-step explanation:
Find the total cost of a $40 meal with a 10% tip. Round to the nearest cent when necessary
We know that the cost of the meal is $40 and the tip is the 10%.
And we must find the total cost.
The total cost will be we cost of the meal plus the tip.
Now, we must find the cost of the tip.
Since the tip is the 10% we must multiply the cost of the meal by 10%. (We can represent 10% as 0.1)
[tex]\text{tip}=\text{ \$40}\cdot0.1=\text{ \$4}[/tex]Then, the total cost is
[tex]\begin{gathered} \text{ Total cost=cost of the meal + tip} \\ \text{ Total cost= \$40+ \$4 = \$44} \end{gathered}[/tex]Finally, the total cost of the meal is $44.
Please answer the question in the photo
The value of z in this convex polygon is equal to 66°
What is a polygon?A polygon can be defined as a two-dimensional geometric shape that comprises straight line segments and a finite number of sides.
Note: The number of sides (n) of a pentagon is 5.
In Geometry, the sum of all the interior angles of a polygon with "n" sides is given by this formula:
Interior angle = 180 × (n - 2)
Interior angle = 180 × (5 - 2)
Interior angle = 180 × 3
Interior angle = 540°.
Now, we can determine the value of z as follows:
(180° - 2z) + (180° - z) + 130° + 108° + 140° = 540°
3z - 378° = 540° - 360°
3z = 378° - 180°
3z = 198°
z = 198°/3
z = 66°
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Six student government officers want to go to the state convention. It will cost them $100 for registration, $380 for transportation and food, and $54 per person for the hotel. There is $500 budgeted for the convention in the student government savings account. They can earn the rest of the money they need by having a car wash. If they charge $5 per car, how many cars must they wash in order to have enough money to pay for the trip?
Answer:
61
Step-by-step explanation:
100+380+6(54)=804
804-500=304
304/5=60.8
Round answer to 61 because 60 is too little and will not meet the budget
geometry is this correct guys?
Answer: bigger angle=64 smaller angle=26
Step-by-step explanation:
1. set up an equation
because the bigger angle is 14 less than 3 times the measurement of the smaller angle we can call the smaller angle x and the bigger angle 3x-14 knowing complementary angles are 90 degrees you can set up the following:x+3x-14=90
3.solve the equation
x+3x-14=90
4x-14=90 | combine like terms
4x=104 | add 14 on both sides
x=26 | divide by 4 on both sides
4. plug x in to your angle measures
1(26)=26
3(26)-14
78-14
64
factor out the coefficient of 1.1x + 9.9
Answer:
1.1(x + 9)
Step-by-step explanation:
1.1x + 9.9 ← factor out 1.1 from each term
= 1.1(x + 9)
Please answer this with an explannation. Thank You.
The value of x in the triangle is 46.40° .
How to find the angle of a triangle?The angle of a triangle can be found using sine rule.
Therefore, applying sine rule,
a / sin A = b / sin B = c / sin C
Hence,
5 / sin x = 6.9 / sin 88°
cross multiply
5 sin 88° = 6.9 sin x
5 × 0.99939082701 = 6.9 sin x
4.9969541351 = 6.9 sin x
divide both sides by 6.9
sin x = 4.9969541351 / 6.9
sin x = 0.72419625146
x = sin⁻¹ 0.72419625146
x = 46.4020264383
Therefore,
x = 46.40°
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Help me Im having trouble anyone help me
Answer:
y=x+4
Step-by-step explanation:
The slope of the line is [tex]\frac{3-4}{-1-0}=1[/tex].
Since the y-intercept is 4, the equation is y=x+4.
Houa took a taxi from her house to the airport. The taxi company charged a pick-up fee of $1.20 plus $1.25 per mile. The total fare was $29.95, not including the tip. Which equation or tape diagram could be used to represent the context if x represents the number of miles in the taxi ride?
The equation or tape diagram could be used to represent the context if x represents the number of miles in the taxi ride is A. 29.95 - 1.2 / 1.25 = x
How to illustrate the information?From the information, Houa took a taxi from her house to the airport and the taxi company charged a pick-up fee of $1.20 plus $1.25 per mile. The total fare was $29.95,
Let the number of miles be represented by x.
Therefore, the information will be illustrated by:
1.20 + 1.25(x) = 29.95
1.20 + 1.25x = 29.25
Make x the subject
1.25x = 29.25 - 1.20
x = 29.25 - 1.20 / 1.25
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0.4% as a decimal
ITS DUE AT MIDNIGHT
Answer: 0.004
Step-by-step explanation:
Point C is on line segment BD. Given
CD = 2 and BC = 8, determine the
length BD.
An element of a line known as a line segment joins two places that are thought of as line's ends. Point C is on line segment BD, Given CD = 2 and BC = 8, the length BD is 10.
What is line segment?A line segment in geometry is a section of a straight line that is enclosed by two clearly defined end points and contains all of points on the line that lie inside those endpoints. The Euclidean distance between the two ends of a line segment determines its length. Half-open line segments contain exactly one of endpoints, while closed line segments have both of the endpoints. Open the line segments do not contain either of the endpoints. A line drawn above the symbols for the two endpoints is frequently used in geometry to indicate a line segment.
An element of a line known as a line segment joins two places that are thought of as line's ends. It is possible to measure the separation between two places. Given that line segments have a defined length, they can form the sides of any polygon.
Point C is on line segment BD.
CD+BC=2+8=10
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Answer:�
�
=
BC=
15
15
Step-by-step explanation:
For each pair of images, describe which of these transformations are translation, reflection, or rotation.
Answer:
A is translation because it's being moved to the right to get a'b'
b is reflection because you would reflect over the x-axis \
C is rotation
Picture A represents the translation, the picture represents the reflection, and picture C represents the rotation.
What is geometric transformation?It is defined as the change in coordinates and the shape of the geometrical body. It is also referred to as a two-dimensional transformation. In the geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.
It is given that:
The lines are shown in the picture.
As we know from the definition of the geometric transformation, geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.
From the picture,
Picture A, which is being moved to the right to obtain A'B', serves as a representation of the translation.
Because you would reflect over the x-axis, Picture A represents reflection.
Image A illustrates rotation.
Thus, picture A represents the translation, the picture represents the reflection, and picture C represents the rotation.
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The peak of a mountain is 197.35 feet above sea level. The bottom of a lake is 131.38 feet below the sea level. What is the difference in elevations between the top of the mountain and the bottom of the mountain lake?
Answer: 65.97
Step-by-step explanation:
Find the perimeter and total area of the polygon shape shown below.
8
10
10
18
12
12
8
10
10
8
O Perimeter = 96 inches, Area = 192 square inches
O Perimeter = 56 inches, Area = 192 square inches
O Perimeter 56 inches, Area = 288
288 square inches
O Perimeter = 96 inches, Area =
144 square inches
Perimeter of polygon is 96 inches
Area is 192 square inch.
What is area and perimeter?Area is the entire amount of space occupied by a flat (2-D) surface or an object's shape. On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a shape on paper is the area that it occupies. Consider your square as being composed of smaller unit squares.
The perimeter of a form is the space surrounding its edge. Find the perimeter of various forms by summing the lengths of their sides.
Given,
Perimeter = sum of all sides
Perimeter = 8 + 10 + 10 + 18 + 12 +12 +8+ 10 + 10+8 + 10
Perimeter = 86
Perimeter of polygon is 96 inches
Area = Triangle ABC + Rectangle BCED + Triangle DEF
Area = [tex]\frac{1}{2}[/tex] × 12× 8 + 12×8 + [tex]\frac{1}{2}[/tex] ×12 × 8
Area = 192
Area is 192 square inch.
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Find the probability of pulling a red card out of a standard deck of cards
Answer:
Find the probability of pulling a red card out of a standard deck of cards
Step-by-step explanation:
So, the probability of drawing a red-faced card is 6 out of 52 cards. Thus, the probability of drawing a red face card from a deck of cards is 6/52 = 3/26.
A standard deck of playing card consists 52 cards.
Cards is splitted into 4 suit i.e. Hearts, Spades, Diamond and Clubs.
Each suits consists of 13 cards - the Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, King and Queen.
Hearts & Diamond are red cards and Spades and Clubs are black cards.
Probably = Number of favourable/Possible outcomes/ Total outcomes.
Probability of pulling a red card = 26/ 52 = 0.5
Thus, probability of pulling a red card is 0.5.
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Which of the following is a polynomial?
(a) 2−6√+2 (b) 52−3+1
(c)√+1√ (d) None of these
The true statement about the expressions is (d) None of these
What are polynomial expressions?Polynomial expressions are mathematical statements that are represented by variables, coefficients and operators
How to determine the polynomial expression?From the list of options, the given parameters are
(a) 2 − √6 + 2 (b) 52 − 3 + 1 (c)√1
For an expression to be a polynomial, the expression must have variables, coefficients and operators
None of the given expressions have variables, coefficients and operators.
This means that the expressions are not polynomial
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For the four-digit number: 3040, what
must the value of the be so that
this four-digit number is divisible by
5?
The value which the four digit number is divisible by 5 is 608
What is Divisibility?
By looking at the digits of an integer, a divisibility rule can be used to quickly and conveniently determine if it can be divided by a specific number.
The given four-digit number is divisible by 5:
3040
To find the value from which the four digit number is divisible by 5
3040 ÷ 5
= 3040/5
= 608
Hence, The value of the be so that this four-digit number is divisible by 5 is 608
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James is solving a number puzzple that involves three integers, a,b, and c, where, c is a positive integer.The product of a and b is 6.The product of a and c is -4.The product of b and cis -6.
Answer:
a = -2
b = -3
c = 2
Step-by-step explanation:
a*b = 6 {The product of a and b is 6]
a*c = -4 [The product of a and c is -4]
b*c = -6 [The product of b and c is -6]
- Rearrange:
1) a*c = -4 to a = (-4/c)
2) b*c = -6 to b = (-6/c)
Now substitute:
a*b = 6
(-4/c)*(-6/c) = 6
(24/c^2) = 6
c^2 = (24/6)
c^2 = 4
c = 2
use this value of c to find a and b:
a = (-4/c)
a = (-4/2)
a = -2
b = (-6/c)
b = (-6/2)
b = -3
1.5x+ 4.5y=18 solve for x
Answer: x=12-3y
Step-by-step explanation:
Can someone help please??
can someone help me with the second 2
Answer:
Step-by-step explanation:
5?
Answer:
1. AM = 10
2. x = 21;
AM = 14
Step-by-step explanation:
5x = 3x + 4
-3x -3x
-----------------
2x = 4
÷2 ÷2
-------------
x = 2
AM = 5x
5(2) = 10
AM = 10
----------------------------------------------------------------------------------------------------------
|-------------x--------------|
*----|----*----|----*----|----*
A H M S
|---7---|
(assuming AH = HM = MS)
7 + 7 +7 = x
21 = x
AM = 14
I hope this helps!
find elapsed time 7:30am to 3:00 pm
Answer:
7 hours 30 minutes and 0 Seconds
Step-by-step explanation:
60 minutes in 1 hour7:30 - 3:0060 * 10 = 600 SecondsPlus the 30 minutes which converts to 20 secondsChange that into hours and minutesList square numbers 50 to 80
I need help on this asap due Tuesday pls help
a) To calculate the overall mean, you must take the total wages divided by the total number of workers. What Stacy is doing is calculating the average of the means, which is incorrect as both the total wages and the quantity of workers are both different (or she's just using the wrong method of calculation)
b) First, we find the total wages of the 56 workers : 42 x 9.5 + 14 x 13.5 = 588 (pounds)
So, the overall mean is : 588 : 56 = 10.5 (pounds/h)
Answer:
£ 10.50
Step-by-step explanation:
Mean:a) Stacy is wrong because she found the mean of the £9.50 and £13.50. She has to find the mean of wage of 42 packers and wage of 14 truck drivers.
[tex]\sf b) Overall \ mean \ wage = \dfrac{sum \ of \ wages \ of \ 42 \ packers+ Sum \ of \ wages \ of \ 14 \ truckers}{number \ of \ packers + numbers \ of \ truck \ drivers}[/tex]
Sum of wages of 42 packers = 42 * 9.50
= £ 399
Sum of wages of 14 truck drivers = 14 * 13.50
= £ 189
[tex]\sf Overall \ mean \ wage = \dfrac{399+189}{42+14}\\\\[/tex]
[tex]\sf = \dfrac{588}{56}\\\\[/tex]
= £ 10.50
10^-3 x 10^6
give answer in powers (for example, 10^-9 or 10^18)
Question 1)
Two poles of equal heights are standing opposite each other on either side of the road, which is 80 m wide. From a point between them on the road, the angles of elevation of the top of the poles are 60° and 30°, respectively. Find the height of the poles and the distances of the point from the poles ..
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Answer:
The height of pole is 20√3 m each and distance of pole from the point on road is 60 m and 20 m respectively.
Step-by-step explanation:
Given:
Two poles of equal heights are standing on opposite side of the road which is 80 m wide facing each other. From a point on the road the angle of elevation of poles are 60° and 30° respectively.To Find:
The height of poles and the distance of that point on the road from the pole.Formula used:
tan60° = √3 tan30° = 1/√3Let the height of each pole be H metres.
Also, let's assume that distance of the point from one pole (as shown in figure) be x m.
According to question, we have
tan60° = H/(80-x)
H = (80-x)√3.... (1)
Also, tan30° = H/x
H = x/√3... (2)
Putting value of eq(2) in eq(1), we get
x/√3 = (80-x)√3
x = 3(80-x)
x = 240 - 3x
4x = 240
x = 60 m
Putting value of x in eq(2), we get
H = 60/√3 = 20√3 m
So, the height of pole is 20√3 m each and distance of pole from the point on road is 60 m and 20 m respectively.
Answer:
Height of Pole: 20√3 m
Distance Of Point From Poles: 20m and 60m
Step-by-step explanation:
The attached graph may help you understand my explanation better
The two poles are Ab and CD and are 80m apart
O is the point between them
The angle of elevation from O to A is 60°
The angle of elevation from O to D is 30°
Since the two poles are given to be of equal height,
AB = CD
In ΔAOB using the law of tangents
tan 60° = AB/BO
tan 60° = √3 and AB = x
So we get
√3 = x/BO
Multiplying both sides by BO we get
√3 · BO = x
or BO = x/√3
Looking at ΔCOD
tan 30° = DC/OC
tan 30° = 1/√3
1/√3 = x/OC
OC · ( 1/√3) = x
OC = x ÷ 1/√3
= x · √3/1
OC = √3x
We also know that BO + OC = 80
Plugging this information with values computed gives us
x/√3 + √3x = 80
Multiply by √3 on both sides
(x/√3) · √3 + (√3x) √3 = 80√3
(x/√3) · √3 = x since the √3 terms cancel out
(√3x) √3 = 3x
So we get
(x/√3) · √3 + (√3x) √3 = 80√3
=>
x + 3x = 80√3
4x = 80√3
x = (80√3)/4
x =20√ 3
So the height of each pole = 20√ 3 m ≈ 34.64 m
The distance OC can be found from the previous equation
OC = √3x
=> OC = √3 x 20√3 = 20 x 3 = 60m
Since BO + OC = 80 m
BO = 80 - 60 = 20 m
Answer:
Height of each pole = 20√3 m
The point is located 20 m from one pole and 60 m from the other pole
A family arrives at walt disney world parking lot. to get from their car in the parking lot to the gate at the magic kingdom they walk 1/4 mile take a tram for 1/3 their total distance and take a monorail for 1/2of their total distance how far is it from their car to the gate to magic kingdom
The distance from the car to the gate to magic kingdom is 1 1/12 miles.
How to calculate the distance?From the information given, it was stated that get from their car in the parking lot to the gate at the magic kingdom they walk 1/4 mile take a tram for 1/3 their total distance and take a monorail for 1/2.
Therefore, the distance from the car to the gate to magic kingdom based on the information will be the addition of the fractions given. This will be:
= 1/3 + 1/2 + 1/4
= 4/12 + 6/12 + 3/12
= 13/12
= 1 1/12
The distance is 1 1/12 miles.
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