Answer:
6.74
Step-by-step explanation:
100 - 93.26
Answer:
$6.74
Step-by-step explanation:
100.00 - 93.26 = 6.74
Helping in the name of Jesus.
Find the function values.
53. g(x) = 2x + 5
a) g102
b) g1-42
c) g1-72
d) g182
e) g1a + 22
f) g1a2 + 2
The function values are:
a) g(102) = 207
b) g(1-42) = -79
c) g(1-72) = -139
d) g(182) = 369
e) g(1a+22) = 2a + 49
f) g(1a2+2) = 2a2 + 9
The problem is asking to evaluate the function g(x) at specific values of x. To find g(102), for example, we substitute 102 for x in the expression for g(x) and simplify:
g(102) = 2(102) + 5 = 207
Similarly, for g(1-42), we substitute -42 for x:
g(1-42) = 2(-42) + 5 = -79
g(1-72) = 2(1-72) + 5 = -139
g(182) = 2(182) + 5 = 369
For g(1a + 22), we substitute "a+22" for x:
g(1a+22) = 2(a+22) + 5 = 2a + 49
And for g(1a²+2), we substitute "a²+2" for x:
g(1a²+2) = 2(a²+2) + 5 = 2a² + 9
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The container was covered in plastic wrap during manufacturing. How many square inches of plastic wrap were used to wrap the container? Write the answer in terms of π.
2.1π square inches
3.22π square inches
5.04π square inches
6.16π square inches
Determine the surface area of the cylinder. (Use π = 3.14)
net of a cylinder where radius of base is labeled 4 inches and a rectangle with a height labeled 3 inches
200.96 in2
175.84 in2
138.16 in2
100.48 in2
Determine the exact surface area of the cylinder in terms of π.
cylinder with radius labeled 1 and three fourths centimeters and a height labeled 3 and one fourth centimeters
30 and three sixteenths times pi square centimeters
35 and seven eighths times pi square centimeters
11 and thirteen sixteenths times pi square centimeters
17 and one half times pi square centimeters
Bisecting Bakery sells cylindrical round cakes. The most popular cake at the bakery is the red velvet cake. It has a radius of 13 centimeters and a height of 15 centimeters.
If everything but the circular bottom of the cake was iced, how many square centimeters of icing is needed for one cake? Use 3.14 for π and round to the nearest square centimeter.
531 cm2
612 cm2
1,755 cm2
2,286 cm2
1) Cannot be determined.
2) Surface area of the cylinder with radius 4 inches and height 3 inches is 100.48 square inches.
3) Exact surface area of the cylinder with radius 1 and three-fourths centimeters and height 3 and one-fourth centimeters is 35 and seven-eighths times pi square centimeters.
4) The area of icing needed for one red velvet cake with a radius of 13 centimeters and a height of 15 centimeters is approximately 459 square centimeters.
What is the surface area of the cylinder?
The surface area of a cylinder is the total area of all its curved and flat surfaces. It is given by the formula:
Surface Area = 2πr² + 2πrh
To answer these questions, we need to use the formula for the surface area of a cylinder:
Surface Area = 2πr² + 2πrh
where r is the radius of the circular base of the cylinder, h is the height of the cylinder, and π is the mathematical constant pi.
We are given that the container was covered in plastic wrap during manufacturing. We are not given the dimensions of the container, but we can assume it is a cylinder. Therefore, we need to calculate the surface area of the cylinder. We are not given the values of r and h, so we cannot calculate the surface area directly. Therefore, we cannot determine the answer to this question.
We are given the net of a cylinder with a labeled radius of 4 inches and a labeled height of 3 inches. To find the surface area of the cylinder, we need to use the formula:
Surface Area = 2πr² + 2πrh
Substituting r = 4 and h = 3, and using π ≈ 3.14, we get:
Surface Area = 2(3.14)(4²) + 2(3.14)(4)(3) = 100.48 in²
Therefore, the surface area of the cylinder is 100.48 in².
We are given a cylinder with a labeled radius of 1 and three-fourths centimeters and a labeled height of 3 and one-fourth centimeters. To find the surface area of the cylinder, we need to use the formula:
Surface Area = 2πr² + 2πrh
Substituting r = 1.75 and h = 3.25, we get:
Surface Area = 2(3.14)(1.75²) + 2(3.14)(1.75)(3.25) = 35.875π cm²
Therefore, the exact surface area of the cylinder in terms of π is 35 and seven-eighths times pi square centimeters.
We are given a red velvet cake with a radius of 13 centimeters and a height of 15 centimeters. We need to find the area of the circular top of the cake, which is the same as the surface area of a cylinder with radius 13 and height 0. We can use the formula:
Surface Area = 2πr² + 2πrh
Substituting r = 13 and h = 0, we get:
Surface Area = 2(3.14)(13²) + 2(3.14)(13)(0) = 1061.76 cm²
We need to subtract this from the surface area of the whole cylinder (the cake) to find the area of the icing. Using the formula again with r = 13 and h = 15, we get:
Surface Area = 2(3.14)(13²) + 2(3.14)(13)(15) = 1520.6 cm²
Therefore, the area of icing needed for one cake is:
1520.6 - 1061.76 = 458.84 cm²
Rounding this to the nearest square centimeter, we get:
459 cm²
Therefore, approximately 459 square centimeters of icing is needed for one cake.
Hence,
1) Cannot be determined.
2) Surface area of the cylinder with radius 4 inches and height 3 inches is 100.48 square inches.
3) Exact surface area of the cylinder with radius 1 and three-fourths centimeters and height 3 and one-fourth centimeters is 35 and seven-eighths times pi square centimeters.
4) The area of icing needed for one red velvet cake with a radius of 13 centimeters and a height of 15 centimeters is approximately 459 square centimeters.
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evaluate the expression using scientific notation. Express the result in scientific notation.
5.4 X 10^-8/1.5 X 10^4
Answer:
We can simplify this expression as follows:
5.4 x 10^-8 / 1.5 x 10^4 = (5.4/1.5) x (10^-8 / 10^4) = 3.6 x 10^-12
Therefore, the result in scientific notation is 3.6 x 10^-12.
Select the correct answer from each drop-down menu.
Consider quadrilateral EFGH on the coordinate grid.
-6
E
-4
1
LL
F
>+
Y
6-
2-
O
-4-
-6-
H
-N
G
05.
6
In quadrilateral EFGH, sides FG and EH are
are
X
because they
The area of quadrilateral EFGH is closest to
✓square units.
Sides EF and GH
First box ( not congruent, congruent).
Second box ( each have a length of 5.83, each have a length of 7.07, have different lengths)
Third box ( not congruent, congruent with lengths of 4.24, congruent with length of 5.83)
Fourth box (41, 34, 25, 30)
In quadrilateral EFGH, sides FG and EH are congruent because they each have a length of 7.07
The area of quadrilateral EFGH is closest to 30 square units.
How to complete the blanksFrom the question, we have the following parameters that can be used in our computation:
The quadrilateral EFGH
This quadrilateral is a rectangle
This means that the opposite sides are congruentThis also means that the opposite sides are parallelFrom the figure, we can see that the following side lengths
EF = 3√2 = 4.24
EH = 5√2 = 7.07
So, we have
Area = 3√2 * 5√2
Evaluate
Area = 30
Hence, the area is 30 square units
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please help ill make brainlyest please please and fast
1. ∆ABC and ACD are not necessarily similar
2. ∆ABC and ADE are similar by SAS similarity
3. . ∆ABC and AGF are similar by SAS similarity
What are similar triangles?Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion . In other words, similar triangles are the same shape, but not necessarily the same size. The triangles are congruent if, in addition to this, their corresponding sides are of equal length.
1. ABC and ACD are not similar because there is only one corresponding Similar sides
2. ABC and ADE are similar because there are two corresponding sides and an equal angle A'
3. ABC and ACD are similar because is equal angle A and two corresponding sides.
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What is the measure of angle P? q is 65° P is 67°
this IXL is due tomorrow so I need help fast make sure to explain
Check the picture below.
Factor completely. -3x^2+6x+9 =
The complete factorization of [tex]-3x^2+6x+9[/tex] is -3(x - 3)(x + 1).
What is the factorization?A mathematical expression, equation, or polynomial is factorized, sometimes referred to as factored, when it is broken down into factors or simpler expressions.
A technique for factoring a number or a polynomial is called factorisation. The polynomials are divided into the sums of their component parts. As an illustration, x2 + 2x can be factored as x(x + 2), where x and x+2 are the factors that can be multiplied to obtain the original polynomial.
To factor completely [tex]-3x^2+6x+9[/tex], we first need to factor out the greatest common factor, which is -3:
[tex]-3(x^2 - 2x - 3)[/tex]
Now we can factor the quadratic expression inside the parentheses:
-3(x - 3)(x + 1)
Hence, the complete factorization of [tex]-3x^2+6x+9[/tex] is -3(x - 3)(x + 1).
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Prove that AD CONGRUENT TO BC
ABDC is a rectangle, we can conclude that AD is congruent to BC.
What is Triangle ?
Triangle can be defined in which it consists of three sides, three angles and sum of three angles is always 180 degrees.
In the given diagram, we have a parallelogram ABCD. To prove that AD is congruent to BC, we need to show that ABDC is a rectangle.
Here's the proof:
Since ABCD is a parallelogram, we know that:
AB is parallel to CD
BC is parallel to AD
Also, we have:
∠A + ∠B = 180° (opposite angles of a parallelogram)
∠D + ∠C = 180° (opposite angles of a parallelogram)
From the diagram, we can see that:
∠A + ∠D = 180° (adjacent angles of a parallelogram)
∠B + ∠C = 180° (adjacent angles of a parallelogram)
Adding the last two equations, we get:
∠A + ∠D + ∠B + ∠C = 360°
But we know that the sum of the angles in a rectangle is 360°. Therefore, if we can prove that ABDC is a rectangle, we can conclude that AD is congruent to BC.
To show that ABDC is a rectangle, we need to prove that:
AB is perpendicular to BC
BC is perpendicular to CD
CD is perpendicular to AD
AD is perpendicular to AB
Since AB is parallel to CD and BC is parallel to AD, we can conclude that ∠ABC and ∠CDA are alternate interior angles and are therefore congruent. Similarly, ∠ABD and ∠DCB are alternate interior angles and are congruent.
Now, we can prove that ABDC is a rectangle by showing that all its angles are right angles. We can do this by proving that:
∠ABC + ∠ABD = 90° (interior angles of a triangle)
∠CDA + ∠DCB = 90° (interior angles of a triangle)
Since ∠ABC and ∠CDA are congruent, and ∠ABD and ∠DCB are congruent, we have:
∠ABC + ∠ABD = ∠CDA + ∠DCB
Substituting the values of these angles, we get:
2∠ABC = 2∠CDA
∠ABC = ∠CDA
Therefore, ∠ABC and ∠CDA are both 45 degrees. Similarly, we can show that ∠ABD and ∠DCB are both 45 degrees. Hence, all angles of ABDC are 90 degrees, and we have proven that ABDC is a rectangle.
Since , ABDC is a rectangle, we can conclude that AD is congruent to BC.
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What is an expression that shows the associative property has been applied to (6+8)+4
An expression that shows the associative property has been applied to (6+8)+4 is 6+(8+4).
The associative property is a mathematical rule that states that the way numbers are grouped within an expression does not affect the final result. In other words, you can add or multiply numbers in any order, and the result will be the same.
This property is represented as (a+b)+c=a+(b+c) or (a*b)*c=a*(b*c).
In the given expression, (6+8)+4, the associative property can be applied by changing the grouping of the numbers. This can be done by moving the parentheses from the first two numbers to the last two numbers. The new expression would be 6+(8+4).
Therefore, an expression that shows the associative property has been applied to (6+8)+4 is 6+(8+4).
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Solve these systems of linear equations by substitution by following the steps. Write the solutions on the blanks. 2x+y=5 2y=2x-8 a. Find the first variable and isolate it. Then solve for that variable. b. Solve for the second variable. c. Find the numerical value of the first variable. d. Check your solution.
3 - 1 = 5, which is true
a. To solve for the first variable, we need to isolate it on one side of the equation. We can do this by subtracting 2y from both sides of the first equation: 2x + y = 5 becomes 2x + y - 2y = 5 - 2y, which simplifies to 2x = 5 - 2y. Now we can divide both sides by 2 to solve for the first variable x: x = (5 - 2y)/2.
b. Now we can use the value of x we just found to solve for the second variable y in the second equation: 2y = 2x - 8. Substituting the value of x in for 2x gives us 2y = (5 - 2y) - 8, which simplifies to 3y = -3. Now, we can divide both sides by 3 to solve for the second variable y: y = -3/3 or simply y = -1.
c. To find the numerical value of the first variable x, substitute the value of y we just found (i.e. y = -1) into the equation we found in Step a. This gives us x = (5 - 2(-1))/2, which simplifies to x = 3/2 or x = 1.5.
d. To check your solution, substitute the numerical values you found for x and y into the original equations. For the first equation, 2x + y = 5, we have 2(1.5) + (-1) = 5. Simplifying this gives us 3 - 1 = 5, which is true, so the solution is correct!
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A number is equal to the sum of half a second number and 3. The first number is also equal to the sum of one-quarter of the second number and 5. The situation can be represented by using the graph below, where × represents the second number. 1.0 6 8 10 12 14 16 Which equations represent the situation?
Answer:
Step-by-step explanation:
There is no graph attached.
Convert the English phrases into expressions:
1. "A number (Let's call it x) is equal to the sum of half a second number (y) and 3"
x = (1/2)y + 32. "The first number (x) is also equal to the sum of one-quarter of the second number (y) and 5"
x = (1/4)y + 5Let's rewrite these in standard form:
x = (1/2)y+3
2x = y + 6
y = 2x - 6
and
x = (1/4)y + 5
4x = y + 20
y = 4x - 20
A plot of these two lines is attached. Match them with the graph.
Quadrilateral HIJK is an isosceles trapezoid and mZJ = 5p + 1°. What is the value of p?
J
P =
K
Save answer
106⁰
I
H
The value of P for the given isosceles trapezoid is 21.
What is an isosceles trapezoid ?An isosceles trapezoid is a four-sided figure with two parallel sides (called bases) of different lengths, and two non-parallel sides of equal length.
The non-parallel sides are also called legs. The two parallel sides are connected by two diagonal lines that intersect each other at a midpoint, forming two congruent triangles.
The following properties are characteristic of an isosceles trapezoid:
The opposite angles are supplementary (add up to 180 degrees).The diagonals are congruent to each other.The two non-parallel sides are congruent to each other.The angle between a non-parallel side and a base is congruent to the corresponding angle on the other side of the trapezoid.For this case, if m∠I = 106⁰, then m∠J = 106⁰
So the value of P is calculated as follows;
m∠J = 5p + 1 = 106
5p + 1 = 106
5p = 106 - 1
5p = 105
p = 105 / 5
p = 21
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AABC has vertices A(-4,6), B(-6, -4), and C(2,-2).
The following transformation defines AA'B'C':
AA'B'C' =D 5/2 (AABC)
The required vertices of [tex]$\Delta A'B'C'$[/tex] are A'(-10, 15), B'(-15, -10), and C'(5, -5).
How to find the dilated coordinates of triangle?The transformation that defines AA'B'C' can be described as a dilation with center at the origin and scale factor of 5/2.
To find the coordinates of A', B', and C', we can use the following formulas:
[tex]$\begin{align*}A'(x,y) &= \left(\frac{5}{2}\right)x, \left(\frac{5}{2}\right)y \B'(x,y) &= \left(\frac{5}{2}\right)x, \left(\frac{5}{2}\right)y \C'(x,y) &= \left(\frac{5}{2}\right)x, \left(\frac{5}{2}\right)y \\end{align*}$[/tex]
Using the coordinates of A(-4,6), B(-6, -4), and C(2,-2), we can calculate the coordinates of A', B', and C' as follows:
For point A(-4,6), we have:
[tex]$A'(x,y) = \left(\frac{5}{2}\right) x, \left(\frac{5}{2}\right) y = \left(\frac{5}{2}\right) (-4), \left(\frac{5}{2}\right) (6) = (-10, 15)$[/tex]
Therefore, the coordinates of A' are (-10, 15).
For point B(-6,4), we have:
[tex]$B'(x,y) = \left(\frac{5}{2}\right) x, \left(\frac{5}{2}\right) y = \left(\frac{5}{2}\right) (-6), \left(\frac{5}{2}\right) (4) = (-15, 10)$[/tex]
Therefore, the coordinates of B' are (-15, 10).
For point C(2,2), we have:
[tex]$C'(x,y) = \left(\frac{5}{2}\right) x, \left(\frac{5}{2}\right) y = \left(\frac{5}{2}\right) (2), \left(\frac{5}{2}\right) (-2) = (5, -5)$[/tex]
the coordinates of C' are (5, -5).
Therefore, the vertices of [tex]$\Delta A'B'C'$[/tex] are A'(-10, 15), B'(-15, -10), and C'(5, -5).
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The length of two side of a triangle are 3cm and 4cm and the angle included between these sides is 30°. Find the areas of he triangle
The areas of the triangle with length of two side are 3cm and 4cm and the angle included between these sides is 30° is equals to the (3√3/2) cm².
Area is defined as a measure the space inside a two-dimensional shapes, like square, triangle, etc. Area is denoted by square units, like cm², m², etc. Area of triangle is equals to the (1/2)× base length × height. We have a triangle with side lengths. Let triangle be named as ABC. Let
Base length of triangle, BC = 3 cm
Other side of triangle ABC, AC = 4 cm
Angle included between these sides is
= 30°
Now, the above assumption results a right angled triangle ABC, with base 3 cm and hypothenuse 4 cm. We have to calculate the area of triangle ABC. First we determine the height of ∆ABC. Using the Trigonometric functions,
tan 30° = AB/BC
=> tan 30° = AB/3
=> AB = 3 tan 30°
=> AB = 3(1/√3) = √3 cm
Now, area of triangle ABC = (1/2)× base length × height.
= (1/2) × √3 cm × 3 cm
= 3√3/2 cm²
Hence, the required area is 3√3/2 cm².
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if you can do this i would appreciate if you could awnser this pls
Answer:
P(4, tail) = 1/12
Step-by-step explanation:
The probability of a particular outcome when all possible outcomes are equaly likely, is the number of "desired" oucomes divided by the total number of possible outcomes.
In your case, there are 12 possible outcomes (you can count them, or calculate 6 for the dice times 2 for the coin). Only one of them is "desired", namely the combination of 4 and a tail. Hence 1 divided by 12.
Pls help1 1/2-3/4 I need. Help please
Answer:
3/4
Step-by-step explanation:
what is
y = x
y = 2x -4
PLS I NEED HELP and i have sm more questions..
Answer:
(4, 4) in point form
x = 4, y = 4 in equation form
Explanation:
...
Calculate the volume of the parallelepiped determined by the vectors in R3:
u= i - 2j +3k
v=2i+k
w=4j
The volume of the parallelepiped determined by the vectors u, v, and w is 20.
To calculate the volume of the parallelepiped determined by the vectors u, v, and w, we need to use the scalar triple product. The scalar triple product of three vectors is defined as the dot product of one vector with the cross product of the other two vectors. In this case, the volume of the parallelepiped is given by:
Volume = |u . (v x w)|
Where "." represents the dot product and "x" represents the cross product.
First, let's calculate the cross product of v and w:
v x w = (2i + k) x (4j) = 8k - 4i
Next, let's take the dot product of u and the result of the cross product:
u . (v x w) = (i - 2j + 3k) . (8k - 4i) = -4 + 24 = 20
Finally, we take the absolute value of the result to get the volume of the parallelepiped:
Volume = |20| = 20
Therefore, the volume of the parallelepiped determined by the vectors u, v, and w is 20.
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Assessment Math R. 14 Multiply using the distributive p Simplify the expression: (2w-5)(-7)
-14w + 35 is the simplified answer of (2w-5)(-7).
What is distributive property?The distributive property states that for two numbers a and b, a(b+c) = ab + ac. This means that multiplying a number by a sum is the same as multiplying each number in the sum by the original number.
To simplify the expression (2w-5)(-7) using the distributive property, we need to multiply each term inside the parentheses by -7.
The distributive property states that a(b + c) = ab + ac. In this case, a = -7, b = 2w, and c = -5.
So, using the distributive property, we can simplify the expression as follows:
(2w-5)(-7) = (-7)(2w) + (-7)(-5)
= -14w + 35
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the difference of y and 8 is less than or equal to -27
Translate the sentence into an inequality.
Answer:
y - 8 ≤ -27
Step-by-step explanation:
The difference of y and 8 is less than or equal to -27
y - 8 ≤ -27
Answer #14 using the picture
Answer:
(10,14)
Step-by-step explanation:
if you look there's a pattern
5. The average monthly temperatures for a city in Canada have been recorded for one
year. The high average temperature was 77° and occurred during the month of July. The
low average temperature was 5° and occurred during the month of January.
a. Sketch an accurate graph of the situation described above: (Let January
correspond to x=1.)
b. Write a trig equation that models the temperature throughout the year.
c. Find the average monthly temperature for the month of March.
d. During what period of time is the average temperature less than 41°?
Answer: a. Here is a sketch of the situation described above:
80 + . July (x = 7)
| .
| .
| .
60 + . .
| .
| .
| .
40 + . . .
| .
| .
| .
20 + . . . . . . . . . . . . . . .
| .
| .
0 +_______________________________________________
1 2 3 4 5 6 7 8 9 10 11 12
January December
b. One possible trigonometric equation that models the temperature throughout the year is:
T(x) = (36cos((2π/12)(x-7))) + 41
where T(x) represents the average temperature in degrees Fahrenheit for month x (with January corresponding to x=1), and the constant term of 41 is added to shift the curve up to match the lowest average temperature recorded.
c. To find the average monthly temperature for the month of March, we simply plug in x=3 into the equation above:
T(3) = (36cos((2π/12)(3-7))) + 41
= (36*cos(-π/3)) + 41
≈ 51.4°F
So the average monthly temperature for the month of March is approximately 51.4 degrees Fahrenheit.
d. To find the period of time during which the average temperature is less than 41°F, we need to solve the inequality:
T(x) < 41
Substituting the equation for T(x) from part b, we get:
(36cos((2π/12)(x-7))) + 41 < 41
Simplifying this inequality, we get:
cos((2π/12)*(x-7)) < 0
We can solve this inequality by finding the values of x for which the cosine function is negative. The cosine function is negative in the second and third quadrants of the unit circle, so we have:
(2π/12)*(x-7) ∈ (π, 2π) ∪ (3π, 4π)
Simplifying this expression, we get:
π/6 < x-7 < π/2 or 5π/6 < x-7 < 2π/3
Adding 7 to both sides of each inequality, we get:
7 + π/6 < x < 7 + π/2 or 7 + 5π/6 < x < 7 + 2π/3
Simplifying these expressions, we get:
7.524 < x < 8.571 or 11.286 < x < 11.857
Therefore, the average temperature is less than 41°F during the period of time from approximately November 24th to December 19th, and from approximately February 15th to March 20th.
Step-by-step explanation:
C^(2):+3=0 The concession stand made 20 cups of hot chocolate with marshmallows and 15 cups without marshmallows. They also made 17 cups of coffee. How many fewer cups of coffee did they make than cup
The concession stand made 18 fewer cups of coffee than cups of hot chocolate.
Determine the numberTo find out how many fewer cups of coffee they made than cups of hot chocolate, we need to add together the number of cups of hot chocolate with marshmallows and the number of cups without marshmallows:
20 cups + 15 cups = 35 cups of hot chocolate
Now, we can subtract the number of cups of coffee from the number of cups of hot chocolate to find out how many fewer cups of coffee they made:
35 cups - 17 cups = 18 cups
So, the concession stand made 18 fewer cups of coffee than cups of hot chocolate.
In conclusion, the concession stand made 18 fewer cups of coffee than cups of hot chocolate.
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Prove the identity. \[ \frac{1}{\tan x(1+\cos 2 x)}=\csc 2 x \] Note that each Statement must be based on a Rule chosen from the Rule menu. To see a detailed description of a Ruie, select the More inf
The identity \[ \frac{1}{\tan x(1+\cos 2 x)}=\csc 2 x \] is proved.
To prove the identity \[ \frac{1}{\tan x(1+\cos 2 x)}=\csc 2 x \], we can use the Double Angle Formula for Cosines and the Pythagorean Identity.
Using the Double Angle Formula for Cosines, we get:
$\cos2x = 2\cos^2 x - 1$
We can then substitute this into the original identity and simplify:
$\frac{1}{\tan x(1+\cos 2 x)}=\frac{1}{\tan x(1+2\cos^2 x - 1)}$
Using the Pythagorean Identity, $\cos^2 x + \sin^2 x = 1$, we get:
$\frac{1}{\tan x(1+\cos 2 x)}=\frac{1}{\tan x(\sin^2 x)}$
Using the inverse tangent function, $\tan^{-1}x = \frac{\pi}{2}-\sin^{-1}x$, and since $\sin 2x = 2 \sin x \cos x$, we can rewrite this as:
$\frac{1}{\tan x(1+\cos 2 x)}=\frac{1}{2 \sin x \cos x}$
Finally, using the definition of cosecant, $\csc x = \frac{1}{\sin x}$, we get:
$\frac{1}{\tan x(1+\cos 2 x)}=\csc 2 x$
Therefore, the identity \[ \frac{1}{\tan x(1+\cos 2 x)}=\csc 2 x \] is proved.
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Congruent triangles unit 4 homework 4
1. The values of x, y, and z are x = 15.5, y = 9.54, and z = 0. 2. The values of x and y are x = 1.4375 and y = 8. 3. The values of x and y are x = 6 and y = 52.5. 4. X can have any value and the triangles will still be similar
1. We are given that ΔPRS is congruent to ΔCFH.
From ΔPRS, we know that:
∠P = 180 - 28 - ∠R
∠P = 152 - 13y
From ΔCFH, we know that CH is the hypotenuse and CF is one of the legs. So, using the Pythagorean Theorem, we have:
CH^2 = CF^2 + FH^2
39^2 = 24^2 + FH^2
FH^2 = 39^2 - 24^2
FH = sqrt(39^2 - 24^2) = 30
Since ΔPRS is congruent to ΔCFH, their corresponding sides are equal. Therefore:
PS = CH = 39
2x - 7 = CF = 24
Solving for x and y:
2x - 7 = 24
2x = 31
x = 15.5
39 = 2x - 7
46 = 2x
x = 23
∠P = 152 - 13y
28 = 152 - 13y
124 = 13y
y = 9.54
Solving for z:
PS = 2x - 7
39 = 2(15.5) - 7
39 = 31
z = 0
Therefore, the values of x, y, and z are x = 15.5, y = 9.54, and z = 0.
2. We are given that ΔABC is similar to ΔDEF. Therefore, the corresponding sides are proportional:
AB/DE = BC/EF = AC/DF
Substituting the given values:
8/(y-6) = 19/(4x-1) = 14/DF
We can solve for x and y using any two of the three ratios.
Let's first solve for x and y using the first two ratios:
8/(y-6) = 19/(4x-1)
Cross-multiplying, we get:
8(4x-1) = 19(y-6)
Expanding the brackets, we get:
32x - 8 = 19y - 114
32x - 19y = -106
Now let's use the third ratio:
14/DF = 8/(y-6)
Cross-multiplying, we get:
14(y-6) = 8DF
Simplifying, we get:
y = (4/7)DF + 6
Substituting this into the equation we got earlier:
32x - 19y = -106
32x - 19[(4/7)DF + 6] = -106
32x - (76/7)DF - 114 = -106
32x - (76/7)DF = 8
Multiplying both sides by 7, we get:
224x - 76DF = 56
Using the equation we got from the third ratio:
14(y-6) = 8DF
14y - 84 = 8DF
14y = 8DF + 84
y = (4/7)DF + 6
Substituting this into the equation we just got:
14[(4/7)DF + 6] = 8DF + 84
8DF + 84 = (56/7)DF + 84
8DF = (56/7)DF
DF = 7
Substituting DF = 7 into the third ratio:
14/DF = 8/(y-6)
14/7 = 8/(y-6)
2 = y-6
y = 8
Now we can substitute y = 8 into the equation we got earlier:
32x - 19y = -106
32x - 19(8) = -106
32x - 152 = -106
32x = 46
x = 1.4375
Therefore, the values of x and y are x = 1.4375 and y = 8.
3. Since ΔZMK ≈ ΔAPY, we know that the corresponding angles are congruent:
m∠M = m∠A
m∠K = m∠Y
Therefore, we can write two equations:
m∠M = 2y + 7
m∠K = 41°
Also, we know that:
m∠M + m∠K + (13x - 37)° = 180°
Substituting the values we have:
112° + 41° + (13x - 37)° = 180°
13x + 116 = 180
13x = 64
x = 4.9231
Substituting x into the third equation:
112° + 41° + (13x - 37)° = 180°
13x + 116 = 180
13(4.9231) + 116 + m∠K = 180
m∠K = 41°
Substituting m∠K = 41° into the second equation:
m∠K = m∠Y
13x - 37 = 41
13x = 78
x = 6
Substituting x into the first equation:
m∠M = 2y + 7
112 = 2y + 7
105 = 2y
y = 52.5
Therefore, the values of x and y are x = 6 and y = 52.5.
4. Since ΔBTS ≈ ΔGHD, we know that the corresponding angles are congruent:
m∠S = m∠H
m∠B = m∠G
Therefore, we can write two equations:
m∠S = 7y + 5
m∠B = m∠G = 21°
Also, we know that:
m∠B + m∠T + m∠S = 180°
Substituting the values we have:
21° + m∠T + 56° = 180°
m∠T = 103°
Now we can use the fact that the sum of the angles in a triangle is 180° to find m∠G:
m∠B + m∠T + m∠G = 180°
21° + 103° + m∠G = 180°
m∠G = 56°
Since we have a pair of similar triangles, we can use their side lengths to set up a proportion:
BS/BT = GD/GH
Substituting the given values:
25/31 = (4x-11)/GH
Solving for GH:
GH = (31/25)(4x-11)
Now we can use the fact that the sum of the angles in a triangle is 180° to find m∠H:
m∠G + m∠H + m∠D = 180°
56° + m∠H + 90° = 180°
m∠H = 34°
Substituting the values we have:
m∠S = 7y + 5
56 = 7y + 5
51 = 7y
y = 7.2857
Substituting y into the first equation:
m∠S = 7y + 5
m∠S = 7(7.2857) + 5
m∠S = 59
Now we can use the fact that the sum of the angles in a triangle is 180° to find m∠T:
m∠B + m∠T + m∠S = 180°
21° + m∠T + 59° = 180°
m∠T = 100°
Now we can use the fact that we have a pair of similar triangles to find x:
BS/BT = GD/GH
25/31 = (4x-11)/GH
25/31 = (4x-11)/((31/25)(4x-11))
Simplifying:
25/31 = 25/31
Therefore, x can have any value and the triangles will still be similar.
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A route between Guilford and Bath has a distance of 180 kilometres.
Dave drives from Guilford to Bath. He takes 3 hours.
Olivia drives the same route. Her average speed is 15 kilometres per hour faster than Dave's.
(a) How long does it take Olivia to drive from Guilford to Bath?
Give your
answer in hours and minutes
Olivia will take time of 4 hour to drive from Guilford to Bath.
Explain the relation of speed and distance?Speed is the rate at which a distance changes over time. The speed is equivalent to s = D/T if D is the object's distance in time T. The units are the same as for velocity.Let the speed of Dave be 'x' km/h
Then,
Olivia's speed = ( x + 15 )km/h
Time = 3 hours.
Distance = 180 kilometres
Using relations:
Speed = distance /time
x + 15 = 180/3
x + 15 = 60
x = 60 - 15
x = 45 km/hr.
Time taken by Olivia to drive from Guilford to Bath.
45 = 180/t
t = 180 / 45
t = 4 hours.
Thus, it take Olivia 4 hour to drive from Guilford to Bath.
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Could anyone help me with this question?
Answer:
a) 1024 - 14280x + 720x² - 240x³
b) 117616
Step-by-step explanation:
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As a New Year's resolution, Jimmy has agreed to pay off his 4 credit cards and completely eliminate his credit card debt within the next 12 months. Listed below are the balances and annual percentage rates for Jimmy's credit cards. In order to pay his credit card debt off in the next 12 months, what will Jimmy's total minimum credit card payment be?
Credit Card
Current Balance
APR
A
$563.00
16%
B
$2,525.00
21%
C
$972.00
19%
D
$389.00
17%
a.
$321.83
b.
$361.45
c.
$374.65
d.
$411.25
Answer:
In order to pay Jimmy's credit card debt off in the next 12 months, then the total minimum credit card payment will be $411.25.
Step-by-step explanation:
Abstract Algebra: What is the maximum possible
order of an element of ????8? Is ????8 a cyclic
group? Is ????8 an abelian group?
8 is an abelian group.
The maximum possible order of an element in the group ????8 is 8. No, ????8 is not a cyclic group, as the only cyclic group of order 8 is a group with one element. However, ????8 is an abelian group. An abelian group is a group in which the result of the group operation is independent of the order of its operands.
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Nork Facior out the GCF from the polynomial a^(5)b^(7)-a^(3)b^(2)+a^(2)b^(6)-a^(2)b^(2)
The GCF of the polynomial a^(5)b^(7)-a^(3)b^(2)+a^(2)b^(6)-a^(2)b^(2) is a^(2)b^(2), and the factored form of the polynomial is a^(2)b^(2)(a^(3)b^(5)-a+b^(4)-1).
The GCF, or greatest common factor, is the largest factor that all terms in a polynomial have in common. In this case, we need to find the GCF of the polynomial a^(5)b^(7)-a^(3)b^(2)+a^(2)b^(6)-a^(2)b^(2).
First, we need to look at the exponents of each term to determine the GCF. The smallest exponent for a is 2, and the smallest exponent for b is 2. Therefore, the GCF for this polynomial is a^(2)b^(2).
Next, we need to factor out the GCF from each term in the polynomial. This is done by dividing each term by the GCF and then multiplying the GCF by the resulting polynomial.
So, the factored form of the polynomial is:
a^(2)b^(2)(a^(3)b^(5)-a+b^(4)-1)
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