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Instructions: Find the value of the trigonometric ratio. Make sure to simplify the fraction
if needed.
Tan A
Check
50
30
A
40
B
Answers
Using relations in a right triangle, it is found that:
tan(A) = 3/4 = 0.75.
What are the relations in a right triangle?The relations in a right triangle are given as follows:
The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.In this triangle:
The adjacent side to A has length 40.The opposite side to A has length 30.Hence the tangent of A is:
tan(A) = 30/40 = 3/4 = 0.75.
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Related Questions
Simplify the following expression . Give a single numerical value as your answer ( don't forget to include a negative sign if applicable ) . - 105 - (- 68)
Answers
A triangle is shown with its exterior angles. The interior angles of the triangle are angles 2, 3, 5. The exterior angle at angle 2 is angle 1. The exterior angle at angle 3 is angle 4. The exterior angle at angle 5 is angle 6. Which statements are always true regarding the diagram? Select three options. m∠5 + m∠3 = m∠4 m∠3 + m∠4 + m∠5 = 180° m∠5 + m∠6 =180° m∠2 + m∠3 = m∠6 m∠2 + m∠3 + m∠5 = 180°
Answers
Perimeter: sum of side lengths of the triangle
Number of vertices: 3
Number of edges: 3
Internal angle: 60° (for equilateral)
Sum of interior angles: 180°
Properties: Convex, cyclic, equilateral, isogonal, isotoxal
Geometry formulas
Principles
Types
Golden ratio
19912 divided by 76000
Answers
Answer:
19912/76000=0.262.000000
Answer:
0.262Step-by-step explanation:
19912 76000
-152000 0.262
471200
-456000
152000
-152000
0
Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at a rate of 65 miles per hour. The westbound train travels at a rate of miles per hour. How long will it take for the two trains to be miles apart
Answers
Answer:
It will take 1 hour and 24 minutes.
Step-by-step explanation:
Given that:
Eastbound train travels at a rate of 65 miles per hour and Westbound train travels at a rate of 85 miles per hour
So speed = 65 + 85 = 150 miles per hour
Total distance = 210 miles
We have to find the time, we know that
Distance = time * speed
OR
Time = distance / speed
Time = 210/150
Time = 1.4 hours
Or it can be written as:
Time = 1 hour 24 minutes
Hope this helped :D
The sum of the two digits of a number is 9. If the tens digit is one-half the units digit, what is the number?
Let t = the tens digit, u = the units digit, and t+u = 9. Which of the following equations would complete the system?
t-u=1/2
t=1/2u
u=1/2t
Answers
Answer:
t=1/2u
Step-by-step explanation:
Since t=tens digit and u=units digit, as given in the equation that means that t+u=9. Since the tens digit is one-half the units digit that means: [tex]t=\frac{1}{2}u[/tex] since it's one half the units digit.
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Which intervals show f(x) decreasing? Check all that
apply.
O [-2.5, -2]
O [-2,-1.5]
0-1, 1)
[1.5, 2]
[2, 2.5)
(2.5,3]
Done
Answers
Answer:
[-2.5, -2][-2, -1.5][1.5, 2][2, 2.5)[-2.5, -2], [-2, -1.5], [1.5, 2] and [2, 2.5) were the intervals show f(x) decreasing
What is a function?A relation is a function if it has only One y-value for each x-value.
To find the intervals where a function is decreasing, you need to look for the parts of the function where the slope is negative.
In other words, you need to find the intervals where the function is going downhill.
By the given function or graph the intervals where f(x) is decreasing are
[-2.5, -2], [-2, -1.5], [1.5, 2] and [2, 2.5)
Hence, [-2.5, -2], [-2, -1.5], [1.5, 2] and [2, 2.5) were the intervals show f(x) decreasing
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How many solutions does this linear system have?
y = 2/3x+ 2
6x - 4y = -10
• one solution: (-0.6, -1.6)
O one solution: (-0.6, 1.6)
no solution
infinite number of solutions
Answers
The given linear equation has one solution: (-0.6, 1.6). The correct option is the second option one solution: (-0.6, 1.6)
Solving system of linear equationsFrom the question, we are to determine the number of solutions the given linear equation has
The given system of equations is
y = 2/3x+ 2 ---------- (1)
6x - 4y = -10 ---------- (2)
Substitute equation (1) into equation (2)
6x - 4y = -10
6x - 4(2/3x +2) = -10
6x - 8/3x -8 = -10
6x - 8/3x = -10 + 8
10x/3 = -2
10x = -2 × 3
10x = -6
x = -6/10
x = -0.6
Substitute the value of x into equation (1)
y = 2/3(-0.6)+ 2
y = -0.4 + 2
y = 1.6
The solution to the given system of equation is x = -0.6, y = 1.6. That is, (-0.6, 1.6)
Hence, the given linear equation has one solution: (-0.6, 1.6). The correct option is the second option one solution: (-0.6, 1.6)
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Geometry question I need help with it
Answers
Answer:
True, False, False, False
Step-by-step explanation:
I'll find the lengths of all sides of the drawing before answering individual answers so that it's less confusing.
1) The question says that QR is a perpendicular bisector of TS. This means that the length of TQ and QS is the same. Also, since both triangles TRQ and SRQ share the same side RQ, and the angle between the two segments is 90 degrees, the two triangles are congruent (RTQ and RSQ) using SAS.
2) Side RT and TS will have the same length since the two triangles are congruent. (2x+1) = (4x-3) --> -2x = -4 --> x = 2. We can conclude that x = 2.
3) Now that we know that x = 2, we can find the length of side RS by replacing the x with 2. 4(2)-3 is 5, so RS = 5.
4) We can use the Pythagorean theorem to find RQ (Hypotenuse^2 = Other two sides added after being squared individually). Since the hypotenuse of triangle RSQ is RS which is 5, and one side is 4, we can input those into our equation. (5)^2 = (4)^2 + (RQ)^2. --> 25 = 16 + (RQ)^2 --> 9 = (RQ)^2 --> RQ = 3.
5) Since the two triangles RTQ and RSQ are congruent, side TQ and SQ also have the same length, since CPCTC (Corresponding parts of congruent triangles are congruent). QS is 4, so TQ will also be 4. This means that ST will be 8 (4+4). ST = 8
Now that we have all the clues, all we need to do is choose True or False.
RS = 5 is TRUE
RS = 4 is FALSE
ST = 10 is FALSE
QR = 4 is FALSE
Multiple choice. A square floor mat has a side length of 22 m.
What is the area of the mat as a power?
A. 222 m²
B. 223 m³
3
C. 22² m²
D. 222 m²
Answers
Answer:
C
Step-by-step explanation:
.........................
Answer:
c
Step-by-step explanation:I think the answer might be C. because they have asked for the area and the formulae is side multiply by side.
What does RS equal?
Answers
Work Shown:
PR*RT = QR*RS
4*15 = 5*RS
60 = 5*RS
RS = 60/5
RS = 12
For more information, check out the intersecting chords theorem. This is the idea where multiplying pieces of two chords leads to the same product. A chord is any segment where both endpoints are on the edge of the circle.
RS is equal to 12.
In a circle, two chords that intersect inside of a circle is given by this formula: PR * RT = QR * RS
Since these two chords are equal, we can set up this equation by putting what we know so far. Since PR * RT = 15 * 14 = 60, and QR * RS = 5 * RS, we get 5 * RS = 60. This is just a simple algebraic expression now.
Dividing by 5 from both sides, we get [tex]\frac{RS}{5}[/tex] = [tex]\frac{60}{5}[/tex].
We then get RS = 12. This wasn't so bad, right?
Hope this helped!
transform the following polar equation into an equation in rectangular coordinates r=2costheta
Answers
The equation in rectangular coordinates. (x - 1)² + y² = 1
What are different Coordinate Systems ?There are many types of coordinate system depending upon the usage and ease of working , Spherical , Rectangular , Cylindrical , Polar are the examples of Coordinate System.
It is given that the equation in polar coordinates is r = 2 cosθ
To change in rectangular coordinates
The relation between polar and rectangular coordinate is
x = r cosθ and y = r sinθ
x² + y² = r²
r = 2 cosθ
r² = 2r cosθ
r² = x
so the equation in rectangular coordinate system becomes
x² + y² = 2x
x² - 2x + y² = 0
x² - 2x + 1 + y² - 1 = 0
(x - 1)² + y² = 1
This represents the equation in rectangular coordinates.
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Which proportion could be used to find the length of side b?
Answers
Answer:
A
Step-by-step explanation:
[tex]\frac{sin A}{a} = \frac{sin B}{b} = \frac{sin C}{c}[/tex]
Also, you need to subtract the 2 known angles from 180 to find the missing angle measurement. 180 - 85 - 64 = 31
The angles go with the side lengths opposite them.
[tex]\frac{sin 64}{a} = \frac{sin 85}{b} = \frac{sin 31}{9.3}[/tex]
Algebra 1 A Adaptive CR (JL22) 1/Tools Of The Trade
2. Simplify and write in exponential form. (4³)(3) = ?
O
O (4³) (¹)
521
Answers
The simplified expression of [tex](4^3)(\frac{4^4^0x^4}{3^2x^2y^2})[/tex] is [tex]\frac{4^7x^2}{3^2y^2}[/tex]
How to simplify the expression?The expression is given as:
[tex](4^3)(\frac{4^4^0x^4}{3^2x^2y^2})[/tex]
Expressions raise to power 0 is 1.
So, we have:
[tex](4^3)(\frac{4^4x^4}{3^2x^2y^2})[/tex]
Apply the law of indices to expression with common base
[tex](\frac{4^{4+3}x^{4-2}}{3^2y^2})[/tex]
Evaluate the sum and difference
[tex](\frac{4^7x^2}{3^2y^2})[/tex]
Remove the bracket
[tex]\frac{4^7x^2}{3^2y^2}[/tex]
Hence, the simplified expression of [tex](4^3)(\frac{4^4^0x^4}{3^2x^2y^2})[/tex] is [tex]\frac{4^7x^2}{3^2y^2}[/tex]
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Which type of statistics explains characteristics of variables found in a sample and describes, summarizes, and synthesizes collected data
Answers
Type of statistical characteristics of variables found in a sample and describes summarizes and synthesizes collected data is a. Descriptive.
Descriptive statistics are used to describe or summarize the characteristics of a sample or data set, such as a variable's mean, standard deviation, or frequency.
Descriptive statistics can be used to describe a single variable (univariate analysis) or more than one variable (bivariate/multivariate analysis). In the case of more than one variable, descriptive statistics can help summarize relationships between variables using tools such as scatter plots.
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I got a maths equation which i don't really get how to work out, the question is : solve 4x^2+x-3=0
Answers
The solutions for the given equation [tex]4x^2+x-3=0[/tex] are x = -1 and x = 3/4. Using the quadratic formula, the solutions for the given equation are calculated.
What is the quadratic formula?The formula which is used to calculate the roots(solutions) of the quadratic equation in the form [tex]ax^2+bx+c=0[/tex] is
x = [- b ± [tex]\sqrt{b^2-4ac}[/tex]]/2a
Calculation:The given equation is [tex]4x^2+x-3=0[/tex]
In comparison with the standard form of quadratic equation [tex]ax^2+bx+c=0[/tex],
we get, a = 4, b = 1 and c = -3
So, solving the given equation using the quadratic formula,
x = [- b ± [tex]\sqrt{b^2-4ac}[/tex]]/2a
= [- 1 ± [tex]\sqrt{1-4(4)(-3)}[/tex]]/2(4)
= [-1 ± [tex]\sqrt{49}[/tex]]/8
= (-1 ± 7)/8
Thus, x = (-1 + 7)/8 = 3/4 and x = (-1-7)/8 = -8/8 = -1
Therefore, the solutions of the given equation are x = -1 and x = 3/4.
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Simplify 4 1/5 divided 17/9
Answers
Answer:
4.341 or 369÷85
Step-by-step explanation:
41/5 ÷ 17/941/5 × 9/1741×9/5×17369/854.3411764714.341In the diagram, a circle centered at the origin, a right triangle, and the Pythagorean theorem are used to derive the equation of a circle, x2 + y2 = r2.
On a coordinate plane, circle Q is centered at the origin with radius r. Triangle P Q S is shown. Point Q is at (0, 0) and points P is at (x, y). The length of Q P is r, the length of P S is y, and the length of Q S is x. Angle P S Q is a right angle.
If the center of the circle were moved from the origin to the point (h, k) and point P at (x, y) remains on the edge of the circle, which could represent the equation of the new circle?
(h + x)2 + (k + y)2 = r2
(x – h)2 + (y – k)2 = r2
(k + x)2 + (h + y)2 = r2
(x – k)2 + (y – h)2 = r2
Answers
Based on the given information, the equation of this new circle is B. (x - h)² + (y - k)² = r²
What is the equation of a circle?The equation of a circle of radius r represents all the points that lie on the circumference of the given circle.
The equation of a circle is:
x² + y² = r²
Where:
r is the radius of a circle.
After translating h units along the x-axis and k units along the y-axis on a coordinate plane,
The equation of this new circle is given by:
(x - h)² + (y - k)² = r²
Where h and k represent the coordinates at the center.
Thus, option B is correct.
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Answer: B) (x - h)² + (y - k)² = r²
Step-by-step explanation:
Edge 2023
find the area of the shape below
Answers
Answer:
47.92cm²
Step-by-step explanation:
Area = length x width
We first section off different rectangles to use the above formulaThe blue represents the total length of the F sideayuda porfa es para hoy y que procedimiento
Answers
In the equation, the value of x is 4 and y is 1.
How to get the values?From the information given,
2x - y = 7. ...... i
x + 2y = 6 ....... ii
Multiply equation i by 1
Multiply equation ii by 2
2x - y = 7.
2x + 4y = 12
Subtract both equations
-5y = -5
y = -5/-5
y = 1
From equation i
2x - y = 7.
2x - 1 = 7
2x = 7 + 1
2x = 8
x = 8/2
x = 4
Therefore, x = 4 and y = 1
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PLSS HELP geometry it's about relations within triangles. need help solving for variables
Answers
Using the definition of congruent triangles, the missing measurements are:
23. m = 7; LO = 14; NO = 14
24. x = 15; m∠QTS = 90°
25. p = 3; IJ = 15; KJ = 15
26. r = 3; UW = 48
27. y = 7; m∠DEF = 50°
28. m = 5; p = 10
What are Congruent Triangles?If two triangles are congruent, then all its corresponding sides and angles are equal.
23. The two triangles are congruent by SAS, therefore:
LO = NO
m + 7 = 2m
7 = 2m - m
7 = m
m = 7
LO = NO = m + 7 = 7 + 7 = 14
LO = 14
NO = 14
24. But triangles are congruent by SSS, therefore:
3x = 5x - 30
3x - 5x = -30
-2x = -30
x = 15
m∠QTS = 2(3x) = 6x = 6(15)
m∠QTS = 90°
25. Both triangles are congruent by ASA, therefore:
4p + 3 = 3p + 6
4p - 3p = -3 + 6
p = 3
IJ = KJ = 4p + 3 = 4(3) + 3 = 15
IJ = 15
KJ = 15
26. The two triangles are congruent by SAS, therefore:
5r + 9 = 8r
9 = 8r - 5r
9 = 3r
9/3 = r
r = 3
UW = 2(8r) = 16r = 16(3)
UW = 48
27. Both triangles are congruent by SSS, therefore:
3y + 4 = 5y - 10
3y - 5y = -4 - 10
-2y = -14
y = 7
m∠DEF = 2(3y + 4) = 6y + 8 = 6(7) + 8
m∠DEF = 50°
28. Both triangles are congruent by SSS, therefore:
2m = 10
m = 10/2
m = 5
2p - 5 = p + 5
2p - p = 5 + 5
p = 10
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can someone help with this?
Answers
Answer:
146
Step-by-step explanation:
substitute x = 2, y = 3 into the expression
4(2)³ + 2(2)(3) - 2(3) + 3(2)²(3)²
= 4(8) + 12 - 6 + 3(4)(9)
= 32 + 12 - 6 + 108
= 38 + 108
= 146
John spent 30 minutes developing an estimate for a job. The job itself took 2 hours, 45 minutes to
complete. What is the ratio of the time spent on the job estimate to the total time spent (including the time
spent calculating the estimate) on this job?
Answers
Answer:
Ratio is 11 : 13
Step-by-step explanation:
We are given;
Time to develop estimate = 30 minutes
Time to do the job = 2 hours 45 minutes = (2 * 60) + 45 = 165 minutes
Total time to develop and do job = 165 + 30 = 195 minutes
Thus;
Ratio of time spent on job to total time = 165 : 195
Whrn this is broken further, we have; 11 : 13
How do the graph of f(x) and f^-1(x) relate?
Answers
[tex]\Large\maltese\underline{\textsf{A. What is Asked}}[/tex]
How do the graphs f(x) and f^-1(x) relate?
[tex]\Large\maltese\underline{\textsf{B. This problem has been solved!}}[/tex]
These two functions are inverses of each other.
That's the way these two are related to each other.
f^-1(x) is the inverse function of f(x), and f(x) is the inverse function of f^-1(x).
[tex]\rule{300}{1.7}[/tex]
[tex]\bf{Result:}[/tex]
[tex]\bf{=They\;are\:inverses}[/tex]
[tex]\boxed{\bf{\space aesthetic \space \not101}}[/tex]
Answer: They are reflections of each other.
Step-by-step explanation:
Complete the table for the given rule.
Rule: y=\dfrac{1}{4}x+1y=
4
1
x+1y, equals, start fraction, 1, divided by, 4, end fraction, x, plus, 1
xxx yyy
444
888
121212
PLEASE HELP ASAP
Answers
The table is
x | 4 | 8 | 12
y | 1 | 2 | 3
The question is not understandable. The well-formatted question is
Complete the table for the given rule
Rule:
[tex]y=\dfrac{1}{4}x[/tex]
Table:
x | 4 | 8 | 12
y | ? | ? | ?
Evaluation of an algebraic expression when a specified integer is used to replace a variable is known as evaluating the expression. We use the provided number to replace the expression's variable before applying the sequence of operations to simplify the expression.
For instance
On evaluation of y= x+7 when x=3, and x=12
we get y(3) = 3 + 7 = 10 and y(12) = 12 + 7 = 19
The given equation is
[tex]y=\dfrac{1}{4}x[/tex]
So, the table is
x | 4 | 8 | 12
y | 1 | 2 | 3
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Answer:
0
12/4
1.75
in that order
Can yaal help me Find the value of x
Answers
Answer:
C
Step-by-step explanation:
the ratios of corresponding sides are in proportion
that is the outer triangle and the inner triangle
[tex]\frac{x}{30}[/tex] = [tex]\frac{88}{44}[/tex] = 2 ( multiply both sides by 30 to clear the fraction )
x = 30 × 2 = 60
Answer:
C. 60
Step-by-step explanation:
I just saw that 44 + 44 equals 88 and compared those two sides, I knew it couldn't be 88, so that's out. Then, I saw that the side, 21 + 21, was shorter than the unknown side and that ruled out 42 and 30. 60 is the only one that is left and makes sense.
The probability distribution for a
random variable x is given in the table.
Answers
Answer:
1
Step-by-step explanation:
The probability that a random variable has a particular value or a range of values is the sum of the probabilities associated with each of the values.
ApplicationAll of the x-values in the table are less than or equal to 20, so p(x≤20) is the sum of all of the probabilities in the table.
p(x≤20) = 0.20 +0.15 +0.05 +0.1 +0.25 +0.1 +0.15 = 1.00
The probability is 1 that x ≤ 20.
help please!! which value is greater than 0.4
Answers
Answer:
D
Step-by-step explanation:
Lets look at all of the answer choices:
Choice A: 9%
= 0.09
Choice B: 0.125
= 0.125
Choice C = 7.8*10^-2
= 0.078
Choice D = 7/16
= 0.4375(THE ONLY ANSWER ABOVE 0.4)
Answer:
D, 0.4375
Step-by-step explanation:
A, 9% = 0.09
B, 0.125 = 0.125
C, 7.8 * 10^-2 = 0.078
D, 7/16 = 0.375
Your answer will be D, 0.4375 because the other values are less the 0.4.
The lifetime of LCD TV sets follows an exponential distribution with a mean of 100,000 hours. Compute the probability a television set:
Answers
Your question is incomplete. Please read below to find the missing content.
Using the exponential distribution, it is found that:
a) There is a 0.0952 = 9.52% probability that a television set fails in less than 10,000 hours.
b) There is a 0.3012 = 30.12% probability that a television set lasts more than 120,000 hours.
c) There is a 0.1809 = 18.09% probability that a television set fails between 60,000 and 100,000 hours of use.
d) The 90th percentile is of 230,259 hours.
In probability theory and records, the exponential distribution is a non-stop possibility distribution that frequently issues the quantity of time till a few specific events happen. It is a method wherein activities show up continuously and independently at a regular common rate.
As an instance, the amount of time (starting now) until an earthquake occurs has an exponential distribution. Different examples consist of the duration, in mins, of long-distance enterprise phone calls, and the quantity of time, in months, a car battery lasts.
The lifetime of LCD TV sets follows an exponential distribution with a mean of 100,000 hours. Compute the probability a television set:
a. Fails in less than 10,000 hours.
b. Lasts more than 120,000 hours.
c. Fails between 60,000 and 100,000 hours of use.
d. Find the 90th percentile. So 10 percent of the TV sets last more than what length of time?
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Solution :
0.9
0.3012
0.1809
230258.
Given that:
μ = 100,000
λ = 1/μ = 1 / 100000 = 0.00001
a. Fails in less than 10,000 hours.
P(X < 10,000) = 1 - e^-λx
x = 10,000
P(X < 10,000) = 1 - e^-(0.00001 * 10000)
= 1 - e^-0.1
= 1 - 0.1
= 0.9
b. Lasts more than 120,000 hours.
X more than 120000
P(X > 120,000) = e^-λx
P(X > 120,000) = e^-(0.00001 * 120000)
P(X > 120,000) = e^-1.2
= 0.3011942 = 0.3012
c. Fails between 60,000 and 100,000 hours of use.
P(X < 60000) = 1 - e^-λx
x = 60000
P(X < 60,000) = 1 - e^-(0.00001 * 60000)
= 1 - e-^-0.6
= 1 - 0.5488116
= 0.4511883
P(X < 100000) = 1 - e^-λx
x = 100000
P(X < 60,000) = 1 - e^-(0.00001 * 100000)
= 1 - e^-1
= 1 - 0.3678794
= 0.6321205
Hence,
0.6321205 - 0.4511883 = 0.1809322
d. Find the 90th percentile. So 10 percent of the TV sets last more than what length of time?
P(x > x) = 10% = 0.1
P(x > x) = e^-λx
0.1 = e^-0.00001 * x
Take the In
−2.302585 = - 0.00001x
2.302585 / 0.00001
= 230258.5
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Why are there two solutions for the equation |6+y| = 2?
Explain.
Answers
Answer:
y=-4 and y=-8
Step-by-step explanation:
When you have an absolute value around something, you can remove it, expect it's like a square root, it's going to be a [tex]\pm[/tex]. Because 6+y could've been -2 and the absolute value just made it positive 2
So set 6+y equal to -2 and 2 to find the two solutions:
6+y = 2
y = -4
6+y = -2
y = -8
Hey there!
YOUR EQUATION: |6 + y| = 2
CONVERT THAT TO:
y + 6 = 2 OR y + 6 = -2
FIRST let’s solve for: y + 6 = 2
y + 6 = 2
SUBTRACT 6 to BOTH SIDES
y = 6 - 6 = 2 - 6
SIMPLIFY THAT!
y = 2 - 6
y = -4
Possible solution #1: y = -4
LASTLY let’s solve for: y + 6 = -2
y + 6 = -2
SUBTRACT 6 to BOTH SIDES
y + 6 - 6 = -2 - 6
SIMPLIFY THAT AS WELL!
y = -2 - 6
y = -8
Possible solution #2. y = -8
Therefore, your answer should be:
y = -4 or y = -8
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
what is (-6, 12) reflected over the x axis and reflected over the y axis ?