Answer:
2. C. 50.3 ft²
3. A. 75.4 ft²
Step-by-step explanation:
The lateral surface area of a cylinder is the area of the curved surface of the cylinder. It is calculated by multiplying the circumference of the base by the height of the cylinder. The formula for the lateral surface area of a cylinder is:
Lateral Surface Area = 2πrh
Where:
r is the radius of the baseh is the height of the cylinderThe total surface area of a cylinder is the area of the lateral surface plus the area of the two circular bases. The formula for the total surface area of a cylinder is:
Total Surface Area = 2πrh + 2πr^2
Where:
r is the radius of the baseh is the height of the cylinder2.
r=2 ft
h=4 ft
Lateral Surface Area = 2πrh=2*22/7*2*4=50.3 ft²
3.
Total Surface Area = 2πrh + 2πr^2=2*22/7*2*4+2*22/7*2
=50.3+25.1=75.4 ft²
The circle has center O. Its radius is 4 ft, and the central angle a measures 110°. What is the area of the shaded region?
Give the exact answer in terms of it, and be sure to include the correct unit in your answer.
The area of shaded sector is,
⇒ Area of sector = 15.35 feet²
We have to given that,
In circle O,
⇒ Radius = 4 feet
And, the central angle a measures 110°.
Since, We know that;
Area of sector = (θ/360) πr²
Where, θ is central angle and r is radius of circle,
Here., r = 4 and θ = 110°
Substitute the given values, we get;
Area of sector = (θ/360) πr²
Area of sector = (110/360) π (4)²
Area of sector = (0.30) π x 16
Area of sector = 4.89 x 3.14
Area of sector = 15.35 feet²
Thus, The area of shaded sector is,
⇒ Area of sector = 36π units²
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50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answer:
The Law of Sines can be used to solve triangles when you have two angles and a side (AAS or ASA) or two sides and a non-included angle (SSA). In this case, triangle A can be solved using the Law of Sines because it has two angles and a side (AAS).
50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answer: A
Step-by-step explanation: 32.07 cm^2
9x⁸y² - 6x³y⁴ /3xy simplified is:
a. 3x⁹y³- 2x⁴y⁵
b. 3x⁷y - 2x²y³
c. 3x⁹y³ - 2x⁴y⁵
d. None of these choices are correct.
Answer: B
Step-by-step explanation:
The coefficients 9 & 6, divided by 3, equal 3 & 2.
For the exponents, if you divide the entire equation by xy, you need to subtract the corresponding exponents of x and y. Subtract the denominator's exponent from the numerator's exponent.
So, for the first part x^8/x^1=x^7
y^2/y^1=y
For the second part: x^3/x=x^2
y^4/y=y^3
So, if you put the coefficients and both parts of the equation together, you get 3x^7y - 2x^2y^3 (answer letter B).
Hope this helped!
What is the meaning of "The field of a relation R"?
The meaning of "The field of a relation R" is a constraint on the values that can be stored in that attribute.
We are given that;
The statement The field of a relation R
Now,
According to the web results, the field of a relation R is the set of all values that appear in the relation R. In other words, it is the union of all the attributes (columns) of R. For example, if R is a relation with attributes A, B, and C, then the field of R is the set of all values that appear in A, B, or C. The field of R can also be denoted by F.
The field of a relation is different from the domain of an attribute, which is the set of all possible values that an attribute can take. For example, if A is an attribute that can only take integer values, then the domain of A is the set of all integers. The domain of A may be larger than the field of A, which is the set of all values that actually appear in A. The domain of an attribute defines a constraint on the values that can be stored in that attribute.
Therefore, by the domain the answer will be a constraint on the values that can be stored in that attribute.
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100 Points! Geometry question. Photo attached. Find x, y, and z. Please show as much work as possible. Thank you!
The missing sides of the triangle are
x = 6.32
y = 7.48
z = 11.83
How to find the missing sides of the trianglesThe missing side x is calculated using similar triangles rules as below
x / 10 = 4 / x
cross multiply gives
x² = 40
x = √40 = 6.32
Other sides will solved by Pythagoras theorem.
the formula of the theorem is
hypotenuse² = opposite² + adjacent²
plugging the values as in the problem
let y be the required distance
y² = 6.32² + 4²
y² = 55.94
y = √55.94
y = 7.48
z² = 6.32² + 10²
z² = 139.94
z = √139.94
z = 11.83
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I'll mark whoever answers first!! Please help me
Answer:
Center ( -8, 1 )
Radius ( 13 )
50 Points! Multiple choice geometry question. Photo attached. Thank you!
The length of PQ in circle R is given as follows:
C) 3.14 m.
What is the measure of the circumference of a circle?The circumference of a circle of radius r is given by the equation presented as follows:
C = 2πr.
The radius for the circle in this problem is given as follows:
r = 3 m.
Hence the circumference for the entire circle is given as follows:
C = 2 x 3.14 x 3
C = 18.84 m.
The sector has an angle measure of 60º, while the entire circumference is of 360º. hence the measure of arc PQ is given as follows:
PQ = 60/360 x 18.84
PQ = 3.14 m.
Hence option C is the correct option in the context of this problem.
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Suppose that the marginal cost function of a handbag manufacturer is
C'(z)=0.046875x² − z + 100
dollars per unit at production level z (where z is measured in units of 100 handbags). Find the total cost of producing 10 additional units if 2 units
are currently being produced.
Total cost of producing the additional units:
Note: Your answer should be a dollar amount and include a dollar sign and be correct to two decimal places.
The total cost of producing the additional units is $767.50.
How to determine the total cost of producing 10 additional units?In order to determine the total cost of producing 10 additional units assuming 2 units are currently being produced, we would have to integrate the marginal cost function for this handbag manufacturer with respect to x, and over the interval [10, 2].
Based on the information provided above, the marginal cost function for this handbag manufacturer is given by this function;
C'(x) = 0.046875x² − x + 100
₂∫¹⁰C'(x)dx = ₂∫¹⁰(0.046875x² − x + 100)dx
₂∫¹⁰C'(x)dx = ₂∫¹⁰(0.046875x²)dx − ₂∫¹⁰(x)dx + ₂∫¹⁰(100)dx
₂∫¹⁰C'(x)dx = 0.046875x³/3|¹⁰₂ - x²/2|¹⁰₂ + 100x|¹⁰₂
₂∫¹⁰C'(x)dx = 0.015625(10³ - 2³) - 1/2(10² - 2²) + 100(10 - 2)
₂∫¹⁰C'(x)dx = 0.015625(1000 - 8) - 0.5(100 - 4) + 100(8)
₂∫¹⁰C'(x)dx = 0.015625(992) - 0.5(96) + 800
₂∫¹⁰C'(x)dx = 15.5 - 48 + 800
₂∫¹⁰C'(x)dx = $767.50
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PLEASE HELP ME ANSWER QUESTIONS 7, 8, 9 AND 10. I REALLY, REALLY NEED THEM
The area under the curve y = x² + 5x + 4 and the x-axis is [tex]1\frac{2}{3}[/tex] square units.
To find the area under the curve y = x² + 5x + 4 and the x-axis, we need to integrate the given function over a specific interval.
We need to find the definite integral of the function over a suitable interval.
Let's find the definite integral of the function from its roots (where the curve intersects the x-axis).
First, let's find the roots of the function by setting y = 0:
x² + 5x + 4 = 0
Factoring the quadratic equation:
(x + 1)(x + 4) = 0
Setting each factor equal to zero:
x + 1 = 0 => x = -1
x + 4 = 0 => x = -4
The roots of the function are x = -1 and x = -4.
To find the area under the curve, we integrate the function from x = -4 to x = -1:
∫[x=-4 to -1] (x² + 5x + 4) dx
Integrating the function:
∫[x=-4 to -1] (x² + 5x + 4) dx = [1/3x³ + (5/2)x² + 4x] from -4 to -1
Substituting the limits:
[1/3(-1)³ + (5/2)(-1)² + 4(-1)] - [1/3(-4)³ + (5/2)(-4)² + 4(-4)]
Simplifying:
[-1/3 + 5/2 - 4] - [-64/3 + 40/2 - 16]
[tex]1\frac{2}{3}[/tex]
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Find theValue of x
40°
70°
(5x+10)°
Value of an exterior angle of a triangle is equal to the sum of values of two opposite interior angles of a triangle.
therefore,[tex]\qquad\displaystyle \tt \dashrightarrow \: 5x + 10 = 40 + 70[/tex]
[tex]\qquad\displaystyle \tt \dashrightarrow \: 5x = 110 - 10[/tex]
[tex]\qquad\displaystyle \tt \dashrightarrow \: 5x = 100[/tex]
[tex]\qquad\displaystyle \tt \dashrightarrow \: x = 100 \div 5[/tex]
[tex]\qquad\displaystyle \tt \dashrightarrow \: x = 20[/tex]
Value of x = 20°
Hey! there . Thanks for your question :)
Answer:
20° is the correct answer.Step-by-step explanation:
In this question we are given with two interior angles of the triangle that are 40° and 70° , also we are given an exterior angle that is (5x + 10)°. And we are asked to find the value of angle x.
Solution :-
For finding the value of angle x , we have to use exterior angle property of triangle which states that sum of opposite interior angles of triangle is equal to the given exterior angle. So :
Step 1: Making equation :
[tex] \longmapsto \: \sf{40 {}^{°} + 70 {}^{°} = (5x + 10) {}^{°} }[/tex]
Solving :
[tex] \longmapsto \: \sf{110 {}{°} = (5x) {}^{°} +10 {}^{°} }[/tex]
Step 2: Subtracting 10 on both sides :
[tex] \longmapsto \sf{ 110 {}^{°} - 10 {}^{°} = 5x + \cancel{10 {}^{°}} - \cancel{10 {}^{°} } }[/tex]
We get ,
[tex] \longmapsto \sf{(5x ){}^{°} = 100 {}^{°} }[/tex]
Step 3: Dividing both sides by 5 :
[tex] \longmapsto \dfrac{ \cancel{5}x {}^{°} }{ \cancel{5}} = \dfrac{ \: \: \: \: \cancel{ 100} {°}^{} }{ \cancel{5} }[/tex]
On cancelling , we get :
[tex] \longmapsto \underline{\boxed{\red{\sf{ \bold{ x = 20 {}^{°} }}}}} \: \: \bigstar[/tex]
Therefore , value of x is '20°'Verification :-
For verifying sum of both the interior angles is equal to given exterior angles. As we get the value of x as 20 we need to substitute it's value in place x and then L.H.S must be equal to R.H.S :
40° + 70° = 5(20°) + 10°110° = 100° + 10°110° = 110°L.H.S = R.H.STherefore , our answer is correct .
Hope , it'll help you! :)#[tex] \underline{ \sf{ \bold{ Keep \: Learning }}}[/tex]answer pls
its about a sea level . i need the answr in 10 mina pls
The new height above sea level would be Option (C) 3980m.
New sea-level = Previously given sea level + 20m
Given,
Height above sea previously = 4000m
Increase in sea level = 20m
Now, since there has been a rise in sea level due to global warming the distance between the previous 4000m mark and the sea level would decrease. This shall now be less than 4000m. The distance/height would reduce by 20m. It can also be observed that the distances below the sea level would increase due to a rise in the sea level mark.
∴ New height above sea level = 4000m - 20m
= 3980m.
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tan^2 x-1=0
Solve with steps (in radians)
Answer:
[tex]x=\frac{\pi}{4}+\frac{\pi n}{2}[/tex]
Step-by-step explanation:
[tex]\displaystyle \tan^2x-1=0\\\tan^2x=1\\\tan x=\pm 1\\\\x=\frac{\pi}{4}+\frac{\pi n}{2}[/tex]
40 points. I need help with this, so I can explain it to my son. Thank you in advance
The functions of the coefficients of the quadratic equation indicates that the correct statements are;
a. The y-intercept of the function is (0, c)
c. The coefficient b determines the horizontal shift of the parabola compared to the parent function
d. If a is negative, the parabola opens upwards
What are the functions of the quadratic equation?The quadratic equation is; y = a·x² + b·x + c
The functions of the coefficients of the above quadratic function are;
a = The scale factor, and the coefficient that determines the direction the projectile faces.
a < 1; Indicates that the graph is wider than the parent function
a > 1; Indicates that the graph is narrower than the parent function
a < 0; Indicates that the parabola opens downward
a > 0; Indicates that the parabola opens upwards
b = The coefficient b together with coefficients a and c determines the coordinate of the vertex of the graph of the quadratic function, which is; (-b/(2·a), -D/(4·a))
Where;
D = The discriminant
Therefore, b determines the x-value, and therefore, the horizontal shift of the parabola compared to the parent function
c = The y-coordinate of the y-intercept of the quadratic function, which is (0, c)
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Saleema
was investigating the newspaper subscriptions
for her local newspaper. At the beginning of the year,
She noted 1000 subscriptions for
Subscribed to the newspaper. The number of subscriptions
left y years,
a small area that
left
Y years after 2012 is represented by the function
shown.
N (y) = 1000 (0.5)Y
Part A
Approximately how many subscriptions were left when
y=5?
Based on the information, it should be noted that 31.25 subscriptions were left when y=5.
How to calculate the valueFrom the information, Saleema was investigating the newspaper subscriptions for her local newspaper. At the beginning of the year, She noted 1000 subscriptions for Subscribed to the newspaper
To find the approximate number of subscriptions left when y=5, we can substitute y=5 into the function N(y) = 1000 * (0.5)^y and evaluate it.
N(5) = 1000 * (0.5)^5
N(5) = 1000 * (0.5)^(5)
N(5) = 1000 * (0.03125)
N(5) ≈ 31.25
Approximately 31.25 subscriptions were left when y=5.
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Rank the circles from largest area to the smallest area Circle a has the diameter of 8 cm circle b has a radiusof 5 cm circle C has an area of 20 pi centimeters
What is the meaning of "If Y = ran(f), then f is a function onto Y"?
The statement implies that the function f has a surjective property, ensuring full coverage of the target set Y.
The statement "If Y = ran(f), then f is a function onto Y" can be understood in the context of mathematical functions and their range.
In mathematics, a function is considered "onto" or "surjective" if every element in the target set (in this case, Y) has a pre-image in the domain set. In other words, for every element y in Y, there exists at least one element x in the domain set such that f(x) = y.
The given statement is saying that if Y is equal to the range of the function f, then f is a function that covers or maps onto every element in Y. In this case, the function f has a mapping for each element in the set Y, ensuring that no element in Y is left without a pre-image in the domain set.
Thus, the statement implies that the function f has a surjective property, ensuring full coverage of the target set Y.
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Help with this question pls?
The new coordinates of the triangle after reflecting in the x-axis are:
(3, -1), (3, -3), and (-2, -3).
We have,
The triangle has the coordinates:
(3, 1), (3, 3), and (-2, 3)
Now,
To reflect a point or a shape in the x-axis, we simply change the sign of the y-coordinate while keeping the x-coordinate the same.
Let's reflect each of the three given points in the x-axis:
Point (3, 1):
The reflected point in the x-axis will have the same x-coordinate of 3 but with the y-coordinate sign flipped:
Reflected point: (3, -1)
Point (3, 3):
The reflected point in the x-axis will have the same x-coordinate of 3 but with the y-coordinate sign flipped:
Reflected point: (3, -3)
Point (-2, 3):
The reflected point in the x-axis will have the same x-coordinate of -2 but with the y-coordinate sign flipped:
Reflected point: (-2, -3)
Therefore,
The new coordinates of the triangle after reflecting in the x-axis are:
(3, -1), (3, -3), and (-2, -3).
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50 Points! Multiple choice geometry question. Photo attached. Thank you!
6. A study of seatbelt users and nonusers yielded the randomly selected sample data summarized
in the table. Test the claim that the amount of smoking is independent of seat belt use. Use a
0.05 significance level and a test statistic of 1.358. Find the critical value and state the initial
conclusion.
Wear seat belts
Number of Cigarettes Smoked Per Day
0
1-14
15-34
35 and over
175
Don't wear seat belts 149
20
17
07.815; reject the null hypothesis
09.488; fail to reject the null hypothesis
09.488; reject the null hypothesis
42
41
6
9
(1 point)
Answer:
Step-by-step explanation:
ll hypothesis The critical value for this test is 9.488. Based on the test statistic of 1.358, we fail to reject the null hypothesis that the amount of smoking is independent of seat belt use. In other words, there is not enough evidence to support the claim that seat belt use and smoking habits are related.
Personal Note:
You really need to study, or you will end taking summer courses. trust me school isn't that easy and one time I failed I took summer courses but then I passed these summer courses with god's help. so please focus on your studys.
If you charge 500 on a credit card today, how much will the balance be in two years
Answer:
It maybe 12,000/120,000
Step-by-step explanation:
12months a year
12+12=24 so,
500×24=12,000
or 120,000
TriangleTriangle WXY with vertices W(8,-8), X(5,-2), and Y(3,-4) is drawn inside a rectangle, What is the area, in square units, of triangle LMN?
The area of the triangle whose dimensions are given in a vertices form would be = 9
How to calculate the area of a triangle given above?To calculate the area of the triangle, the formula that should be used is the coordinate geometry formula: area = the absolute value of Ax(By - Cy) + Bx(Cy - Ay) + Cx(Ay - By) divided by 2
Where; W=A, X= B, Y = C
Ax= 8
By= -2
Cy= -4
BX= 5
Ay = -8
CX= 3
That is:
= 8(-2--4)+5(-4--8)+3(-8--2)/2
= 16+20-18/2
= 18/2
= 9
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what is the condensed form of the following logarithm: 2log w + 5log v
Answer: log w²v⁵
Step-by-step explanation:
2log w + 5log v >Use exponent log rule
log w² + log v⁵ >There is addition between, use
multiplication rule
log w²v⁵
What is the meaning of "it will be tacitly understood that each such formula can be written in a form that only involves ∈ and = as nonlogical symbols"?
The phrase "it will be tacitly understood that each such formula can be written in a form that only involves ∈ and = as nonlogical symbols" implies that although we may use certain symbols such as defined predicates, operations, and constants in our formulas, the underlying assumption is that these symbols can ultimately be expressed or defined using the fundamental symbols of set membership (∈) and equality (=).
What is the formulas?Symbols can always be represented using set membership and equality symbols. We simplify formulas by eliminating unnecessary symbols through this convention.
If we define predicate "P," any formula with "P" can be expressed using set membership and equality. We can translate any formula with "P" into one using only ∈ and =. By adopting this convention, we ensure clear and precise communication, with a well-defined language and logical structure for formulas.
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See text below
In practice, we shall use in formulas other symbols, namely defined pred- icates, operations, and constants, and even use formulas informally; but it will be tacitly understood that each such formula can be written in a form that only involves and as nonlogical symbols.
Concerning formulas with free variables, we adopt the notational convention that all free variables of a formula
(u1,..., Un)
are among u1, ..., un (possibly some u are not free, or even do not occur, in ). A formula without free variables is called a sentence.
What is the meaning of "it will be tacitly understood that each such formula can be written in a form that only involves ∈ and = as nonlogical symbols"?
Triangle LMIN with vertices L(2, -8), M(12, 8),
and N(14,-4): * = ½
The vertices of triangle image are L'(1, -4), M'(6, 4) and N'(7, -2).
Given that, triangle LMIN with vertices L(2, -8), M(12, 8) and N(14,-4).
Here, scale factor k=1/2
Now, by applying scale factor to the vertices, we get
L(2, -8)→1/2 (2, -8)→L'(1, -4)
M(12, 8)→1/2 (12, 8)→M'(6, 4)
N(14,-4)→1/2 (14, -4)→N'(7, -2)
Therefore, the vertices of triangle image are L'(1, -4), M'(6, 4) and N'(7, -2).
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"Your question is incomplete, probably the complete question/missing part is:"
Triangle LMIN with vertices L(2, -8), M(12, 8), and N(14,-4): k = ½.
Determine the amplitude of function
The amplitudes of functions are a) 8 and b) 6.
Given are the functions we need to determine the amplitude of function,
a) y = 8 Sin (x/2) + 3
b) y = 6 Cos x + 2
So,
To determine the amplitude of a trigonometric function, you can follow these steps:
For a sine function of the form y = A×sin(Bx + C) + D:
The amplitude is equal to the absolute value of the coefficient A.
For a cosine function of the form y = A×cos(Bx + C) + D:
The amplitude is equal to the absolute value of the coefficient A.
Let's apply these steps to the given functions:
a) y = 8×sin(x/2) + 3
The coefficient of sin in this function is 8, so the amplitude is |8| = 8.
Therefore, the amplitude of function a) is 8.
b) y = 6×cos(x) + 2
The coefficient of cos in this function is 6, so the amplitude is |6| = 6.
Therefore, the amplitude of function b) is 6.
Hence the amplitudes of functions are a) 8 and b) 6.
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What is the meaning of "Once we give up the full Comprehension Schema, Russell’s Paradox is no longer a threat"?
The statement "Once we give up the full Comprehension Schema, Russell's Paradox is no longer a threat" implies that by leaving out the unrestricted version of the Schema of Comprehension (which gives room for the construction of sets based on any property), one can be able to avoid meeting up Russell's Paradox.
What is the meaning of the phrase?
Russell discovered the contradiction that arises when analyzing the collection of sets that lack themselves as components. A contradiction arises due to the paradoxical situation of attempting to ascertain if the set includes itself or not.
By adopting the Subset Schema, which limits the creation of sets based on certain criteria, we can steer clear of the paradox and depart from the comprehensive Comprehension Schema.
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What is absolute value and how do you find the absolute value of a number?
Find the absolute value of the following numbers:
|17| |−25| |−1.23| |0.45|
Identify whether each of the following is rational or irrational: 234 5–√
Convert the decimal 0.44444… to a fraction.
Match the number on the left with its classification on the right. Number Classification 0.3333… nonrepeating decimal 3.48372… repeating decimal 3.3 terminating decimal
Absolute value is a mathematical function that gives the distance of a number from zero on the number line.
How to explain the informationLet's find the absolute value of the given numbers:
|17| = 17
|−25| = 25
|−1.23| = 1.23
|0.45| = 0.45
Now, let's identify whether the following numbers are rational or irrational:
234: This is a rational number because it can be expressed as a fraction (e.g., 234/1).
5–√: This is an irrational number because it cannot be expressed as a fraction or a ratio of integers. The square root of 5 is not a perfect square, so it is irrational.
To convert the decimal 0.44444... to a fraction, we can set it as the variable x and solve the equation:
x = 0.44444...
Multiply both sides by 10 to move the decimal point:
10x = 4.44444...
10x - x = 4.44444... - 0.44444...
9x = 4
Divide both sides by 9:
x = 4/9
Therefore, the decimal 0.44444... is equivalent to the fraction 4/9.
Matching the numbers with their classifications:
0.3333...: This is a repeating decimal.
3.48372...: This is a nonrepeating decimal.
3.3: This is a terminating decimal.
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50 Points! Multiple choice algebra question. Photo attached. Thank you!
Answer:
0.15 flowers/ ft²
Step-by-step explanation:
area = 12 X 18 = 216.
population density = population/area
= 32/216
= 0.148
= 0.15 flowers/ ft²
Answer:
A. 0.15 flowers/ft²
Step-by-step explanation:
The population density of flowers is the number of flowers per square foot.
To find the population density, we need to know the area of the garden and the number of flowers.
The area of the garden is 12 feet*18 feet =216 square feet.
The number of flowers is 32.
The population density is 32flowers/216square feet = 0.15 flowers/ft².
Therefore, the answer is (A).
Simplify cot^2x / cscx-1
By algebra properties, the simplified form of the trigonometric equation cot² x / (csc x - 1) is csc x + 1.
How to simplify a trigonometric equation
In this problem we find the case of a trigonometric equation, whose simplified form must be found. The simplification can be done both by algebra properties and trigonometric formulas. Now we proceed to determine the simplificated form:
cot² x / (csc x - 1)
(csc² x - 1) / (csc x - 1)
[(csc x + 1) · (csc x - 1)] / (csc x - 1)
csc x + 1
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