What is the value of cosine (startfraction x over 2 endfraction) if tangent x = one-half and x is in quadrant iii? negative startstartroot startfraction 5 minus 2 startroot 5 endroot over 10 endfraction endendroot negative startstartroot startfraction 5 + 2 startroot 5 endroot over 10 endfraction endendroot startstartroot startfraction 5 minus 2 startroot 5 endroot over 10 endfraction endendroot startstartroot startfraction 5 + 2 startroot 5 endroot over 10 endfraction endendroot.
Answers
Given that x is in quadrant 3, its value for tan x=1/2 will be 206.565°, and its value for cos(206.565°) will be -0.894.
What is trigonometry?Trigonometry is the study of angles and the angular relationships between planar and three-dimensional shapes. The cosecant, cosine, cotangent, secant, sine, and tangent are among the trigonometric functions (also known as the circle functions) that make up trigonometry. The sine, cosine, and tangent are the three fundamental trigonometric operations. The cotangent, secant, and cosecant functions are derived from these three basic functions. On these functions, all trigonometrical concepts are built.
Here,
Tan x=1/2
π<x<3π/2
x=tan⁻¹/²(1/2)
x=26.565°
As the x is in quadrant 3,
=180+26.565°
=206.565°
cos(206.565°)=-0.894
The value of x for tan x=1/2 will be 206.565° as x is in quadrant 3 and for the same value of x, cos(206.565°) will be -0.894.
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Answer:
-sqrt 5 - 2 sqrt 5/10
Step-by-step explanation:
Edge 2023
Related Questions
How is the value of b related to the y-intercept of the graph of y = 3x + b?
Answers
Answer:
b is the y-intercept.
Step-by-step explanation:
The equation is in the y = mx + b form.
b is the y-intercept.
Which of these relations is a function?
Answers
The relation that is a function is the graph (d)
How to determine the function?From the question, we have the graphs to represent the given parameters that can be used in our computation
We are to find out which of them represents a function
For a graph to represent a function, the graph must pass the vertical line test
This means that a line drawn from the x-axis must touch the graph at most once
So, we draw these lines and attach the graphs (see attachment)
The graph that pass the vertical line test is graph d
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Aisha models a can of ground coffee as a right cylinder. She measures its height as 5 and 1/2 and its radius as 1/2 in. Find the volume of the can in cubic inches. Round your answer to the nearest tenth if necessary.
Answers
The flak are in the hape of cone. The maller flak ha a bae radiu of
8
cm and a vertical height of
20
cm. The larger flak ha a bae radiu of
14
cm. The larger flak i now partly filled with liquid up to a vertical height of
15
cm. Calculate the volume of liquid in the flak. Give your anwer in term of π
Answers
The volume of the liquid in the bigger flask which is in the shape of the cone is V = 980π.
What is a cone?
A cone is a recognizable three-dimensional geometric shape with a smooth and curving surface that is directed upward in mathematics. The
Greek word "konos," which denotes a peak or a wedge, is the source of the English word "cone."
The apex is the pointy end, while the base is the level area.
So, the volume of liquid in the bigger flask:
We know that the radius of the bigger flask is 14cm.
The liquid is filled to a height of 15cm.
The volume of cone formula: V = πr²h/3
Substitute values as follows:
V = πr²h/3
V = π(14)²15/3
V = π196*5
V = 980π
Therefore, the volume of the liquid in the bigger flask which is in the shape of the cone is V = 980π.
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how to simplify radical expressions
Answers
The way to simplify radical expressions include:
Find the largest factor in the radicand that is a perfect power of the index. Rewrite the radicand as a product of two factors, using that factor.Use the product rule to rewrite the radical as the product of two radicals.Simplify the root of the perfect power.What is a radical expression?Any expression with the radical symbol is referred to as a radical expression. This symbol, which is frequently used to calculate the square root of a number, is frequently called the "square root" symbol by mistake.
But it can also refer to a cube root, a fourth root, or something higher. Radical equations are equations that contain radicals.
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When we reject the null and the null is true, we have a made a _________ __________.
Answers
When we reject the null and the null is true, we have a made a type I error
The null hypothesis in statistics states that there is no difference between groups or no relationship between variables. It is one of two mutually exclusive hypotheses about a population in a hypothesis test.
null hypothesis is denoted as H₀
Reject the null hypothesis when the p-value is less than or equal to your significance level. Your sample data favor the alternative hypothesis, which suggests that the effect exists in the population. When you can reject the null hypothesis, your results are statistically significant.
when the p-value is greater than your significance level, you fail to reject the null hypothesis.
Sometimes , we reject our null hypothesis even when its true
there we made a type I error in hypothesis
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6. The coordinates of point A are given. The midpoint of AB is (3,-5). Find the coordinates of point B.
a. A(4,-8)
b. A(2.5, -6.5)
Answers
Midpoint = (x1 + x2)/2, (y1 + y2)/2
In this case, we are given that the midpoint of AB is (3,-5). We can substitute this into the midpoint formula to find the coordinates of point B.
Midpoint = (x1 + x2)/2, (y1 + y2)/2
= (3 - x1)/2, (-5 - y1)/2
We can then solve for x1 and y1, which are the coordinates of point A.
x1 = 23 - x2
y1 = 2(-5) - y2
Substituting the given coordinates of the midpoint into these equations, we get:
x1 = 6 - x2
y1 = -10 - y2
We are given that the coordinates of point A are (4,-8). Substituting these values into the equations above, we can solve for x2 and y2, which are the coordinates of point B:
x1 = 6 - x2
4 = 6 - x2
x2 = 2
y1 = -10 - y2
-8 = -10 - y2
y2 = -6
Therefore, the coordinates of point B are (2,-6). This means that the correct answer is option (a), A(4,-8).
Which inference is incorrect?
Answers
The analysis of the logical statement from among the options indicates that the inference that is not true is the option;
If not p, not q. q therefore not not qWhat is a logical statement?A logical statement is one which draws a conclusion based on an hypothesis.
The logical statement which is incorrect can be found by examining the specified statements as follows;
If p then q,
The converse statement , found by switching the positions of the hypothesis and the conclusion is therefore;
q therefore p
The inference is correct
The statement, if not p, not q . q therefore not not p
According to the law of contraposition, a conditional statement is true when the contrapositive statement is also true.
The statement if not p, not q. which is the contrapositive of the statement if q then p
The inference, q, therefore not not q is incorrect
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When conveiling units, summarize the steps using the direct method
Answers
Answer:
1. Identify the unit of measure to be converted.
2. Determine the conversion factor between the original and desired units.
3. Multiply the original measure by the conversion factor to obtain the new unit measure.
4. Check the new unit measure to ensure accuracy.
Step-by-step explanation:
Line H is represented by the following equation: 2x + 2y = 8
What is most likely the equation for line K so the set of equations has infinitely many solutions
O a
Ob
O c
Od
x + 2y = 2
x+y=4
2x + y = 6
x-y=8
Question 2 (4 points)
Answers
x+y=4 is most likely the equation for line K so the set of equations has infinitely many solutions.
Define equation.Equation is a declaration that two expressions with variables or integers are equal. In essence, equations are questions, and attempts to systematically identify the solutions to these questions have been the driving forces behind the creation of mathematics. Simple algebraic equations with merely addition or multiplication to differential equations, exponential equations with exponential expressions, and integral equations are examples of different types of equations. They are employed to represent a number of physics laws. also see equation system.
Given
There must be identical lines made up of the same points for there to be an endless number of solutions. This implies that when expressed in the simplest terms, their equations are also identical.
As a result, x+y Equals 4. Equation here corresponds to B.
2x + 2y = 8
Dividing equation by 2
x + y = 4
As a result, x+y Equals 4. Equation here corresponds to B.
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a polynomial function of degree n has at most real zeros and at most relative extrema. t or f
Answers
A polynomial function of degree n has at most n real zeros and at most n-1 turning points.
What is polynomial function ?
In an equation such as the quadratic equation, cubic equation, etc., a polynomial function is a function that only involves non-negative integer powers or only positive integer exponents of a variable. For instance, the polynomial 2x+5 has an exponent of 1.
What isa Zeros of Polynomials?
Every polynomial will have as many zeros as its degree if we are able to factor it over the entire set of complex numbers, though some of these zeros are repeated and therefore counted more than once. As the function might not be fully factorable over the set of real numbers, if we limit ourselves to the set of real numbers, we might or might not be able to identify this many zeros.
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If you rent a car from Caleb's Cars, you'll pay a $61 fee
and $24 per day. At Vinny's Vehicles, you'll pay a $105 fee and $20 per day. Determine the number of days you can rent a car from either place and pay the same amount. Use substitution or elimination.Thanks
Answers
Caleb’s cars:$61
Vinny’s Vehicles:$105
Difference:105-61=44
Amount per day:
Caleb’s Cars:$24
Vinny’s Vehicles:$20
Difference:24-20=4
Now divide the difference of the starting rent fee (44) by the difference of the amount per day (4).
44/4=11
It will take 11 days.
Check your work:
Caleb’s Cars: (24x11)+61=325
Vinny’s Vehicles: (20x11)+105=325
325=325
Thus, it will take 11 days to pay the same amount.
If you have any questions, feel free to leave a comment.
Hope this helped!
The tide, or depth of the ocean near the shore, changes throughout the day. The depth of the bay can be modeled by d = 35 - 28 cos (π/6. 2 t)
where d is the depth in feet and t is the time in hours. Consider a day in which t = 0 represents 12:00 A. M. At what time is the water depth 14 feet.
(please include explanation)
Answers
The exists no solution for which the water depth 14 feet in the ocean near the shore.
Explain the term time period?A time period (T) is the length of time it takes for one complete vibration cycle to pass over a certain location. As the frequency of a wave rises, so does its period. The length of time is expressed in "seconds."We determine the function's period since that is the number of it takes hours for the ocean to return to its original depth of a specific number of feet.
The function's duration is 2π/ (π/6.2) = 12.4 hours.
When t = 0, midnight, or 12:00AM, it is low tide.
As a result, the next low tide will occur at 12:24 PM, or t = 12.4, 12.4 hours from now.
A high tide will occur halfway between those two low tides, at t=6.2 hours after midnight, or at 6:12AM.
Another high tide will occur at t=18.6 hours after midnight, or at 6:36 PM, 12.4 hours later.
If t = 0 is used in the equation, the low tide occurs at that time;
d = 35 - 28cos(pi/6.2)t
d = 35-28cos(pi/6.2)0
d = 35-28cos(0)
d = 35-28(1)
d - 35-28
d = 7
Therefore, there will never be 4 feet there because the lowest depth that may exist is 7 feet.
Thus, the exists no solution for which the water depth 14 feet in the ocean near the shore.
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The time,
T
(seconds), it takes for a pot of water to boil is proportional to the amount,
A
(litres), of water.
It takes 200 seconds to boil 2.7 litres of water.
Work out how much water is in the pot if it boils in 220 seconds.
Answers
The relationship between the time it takes to boil a pot of water, T (in seconds), and the amount of water, A (in litres),
T ∝ A,
setting up the equation and solving:
2.96 liters of water will boils in 220 seconds.
what is equation?An equation is a mathematical statement that shows that two expressions are equal.
what is proportionality constant?A proportionality constant is a coefficient that relates two quantities that are proportional to each other. In other words, if two quantities are proportional, their ratio is always the same, and this constant ratio is the proportionality constant.
This proportionality can be written as an equation by introducing a constant of proportionality, k:
T = k * A
We are given that it takes 200 seconds to boil 2.7 litres of water, so we can set up an equation using this information:
200 = k * 2.7
Solving for k, we find that k = 200/2.7 = 74.07407407407407.
Now that we know the value of the constant of proportionality, we can use it to find the amount of water in the pot if it boils in 220 seconds. We can set up the following equation:
220 = 74.07407407407407 * A
Solving for A, we find that the amount of water in the pot is A = 220 / 74.07407407407407 = 2.962962962962963 litres.
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During the holiday, students went swimming in a local rectangular pool. The pool measures 20 feet by 35 feet. It is surrounded by a patio that is uniform width. Find the width of the patio if the total area of the pool and patio is 1350 sqr feet. Write a quadratic equation to solve the problem.
Answers
Answer:
The width of the patio is 3/2 feet.
Step-by-step explanation:
following equation to solve for w:
(20+2w) * (35+2w) = 1350
Expanding the equation, we get:
700 + 140w + 70w^2 = 1350
Subtracting 700 from both sides, we get:
140w + 70w^2 = 650
Dividing both sides by 10, we get:
14w + 7w^2 = 65
We can now solve for w using the quadratic formula:
w = (-b +/- sqrt(b^2-4ac)) / 2a
where a = 7, b = 14, and c = -65. Substituting these values into the formula, we get:
w = (-14 +/- sqrt(14^2-47(-65))) / 2*7
w = (-14 +/- sqrt(196+1820)) / 14
w = (-14 +/- sqrt(2016)) / 14
w = (-14 +/- 44) / 14
To find the width of the patio, we need to find the area of the pool and the area of the patio. Let's call the width of the patio "w". The area of the pool is 20 * 35 = <<20*35=700>>700 square feet. The area of the patio is (20+2w) * (35+2w) = 1350 sqr feet. We can set up the following equation to solve for w:
(20+2w) * (35+2w) = 1350
Expanding the equation, we get:
700 + 140w + 70w^2 = 1350
Subtracting 700 from both sides, we get:
140w + 70w^2 = 650
Dividing both sides by 10, we get:
14w + 7w^2 = 65
We can now solve for w using the quadratic formula:
w = (-b +/- sqrt(b^2-4ac)) / 2a
where a = 7, b = 14, and c = -65. Substituting these values into the formula, we get:
w = (-14 +/- sqrt(14^2-47(-65))) / 2*7
w = (-14 +/- sqrt(196+1820)) / 14
w = (-14 +/- sqrt(2016)) / 14
w = (-14 +/- 44) / 14
This means that the width of the patio is either 3/2 or -5/2 feet. Since the width cannot be negative, the width of the patio must be 3/2 feet.
The quadratic equation we can use to solve this problem is:
w^2 + 14w - 65 = 0
hurrryyyyy please
What is the solution for p in the equation?
1/3 P + 1/2 P + 7 = 7/6 p + 5 + 4
A. p=1
B. p=-1
C. p=6
D. p=-6
Answers
Answer:
D. p = -6
Step-by-step explanation:
1. combine like terms
5/6 P + 7 = 7/6 P + 9
2. subtract 7/6 P from both sides
-2/6 P + 7 = 9
3. subtract 7 from both sides
-2/6 P = 2
4. multiply both sides by -6/2
Answer:
p = -6
Answer: D
Step-by-step explanation:
w+13=27
what is answer
Answers
Answer: w=14
Step-by-step explanation: The way I solve it is if you take 27 and subtract 13 from it, you'll get 14. Hope this helps!
Answer:
w=14
Step-by-step explanation:
hope this helps...
Evaluate
-1/3 - (-6/5)
SIMPLEST FORM
Answers
Answer:
13/15
Step-by-step explanation:
Step 1) Convert to -5/15 - (-18/15)
Step 2) -5/15 - (-18/15)= 13/15
can anyone please help me on my bell ringer
Answers
Answer:
y= 20x+50
Step by Step:
22) The function y = -16t² + 56t+ 4 must have a root between
which of the following x- values?
A) 0 and 1
B) 1 and 2
C) 2 and 3
D) 3 and 4
E) 4 and 5
Answers
t = 3.750 and t = 0.070 are, the following x- values, between A) 0 and 1 and D) 3 and 4
What is quadratic equation?
A quadratic equation is a second-order polynomial equation in one variable (x) using the formula ax² + bx + c = 0 and a≠0. The fundamental theorem of algebra ensures that it has at least one solution because it is a second-order polynomial problem. Real or complex solutions are also possible.
According to question.
y = -16t² + 56t+ 4
⇒ -16t² + 56t + 4
⇒ -4t² + 14t + 1
⇒ t = [-14 ±√((14)² - 4*(-4)*1)]/-8
⇒ t = [-14 ±√(212)]/-8
⇒ t = [-14 ± 14.560]/-8
⇒ t = [-14 ± 14.560]/-8
⇒ t = -(28.56)/-8 and t = 0.560/-8
⇒ t = 3.750 and t = 0.070
hence, t = 3.750 and t = 0.070 are, the following x- values, between A) 0 and 1 and D) 3 and 4
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PLS HELP ME DUE NOW!!!!!!!!!!!!
Answers
The new coordinate for point B is (0,2). Hence option B is the correct option.
What is coordinate of a point?
A pair of numbers that describe the position of a point on a coordinate plane by using the horizontal and vertical distances from the two reference axes. Usually represented by (x,y) the x-value and y-value.
Given that the coordinate of point A and B are (3,0) and (0,4).
The line AB is dilated by 1/2.
This means the scale factor is 1/2.
The x coordinate of point B is 0.
The y coordinate of point B is 4.
Multiply 1/2 with the x coordinate and y coordinate of point B to find the new coordinate of point B:
The new x coordinate of point B is (0 × 1/2) = 0
The new y coordinate of point B is (4 × 1/2) = 2.
The new coordinate of point B is (0,2).
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Suppose you are trying to find your longitude and start looking for when the shadows are shortest at your house. You discover that this happens at 1:31:45 PM EDT (Eastern Daylight Savings Time).
What is this time in GMT?
Remember that EDT = GMT – 4.
Practice
A
1:31:45 PM
B
5:31:45 PM
C
9:31:45 AM
D
4:31:45 PM
Answers
The time calculation which involve calculating the time in GMT when it is 1:31:45 PM EDT (Eastern Daylight Savings Time) is
B 5:31:45 PMHow to convert from Eastern Daylight Savings Time to GMTThe conversion given in the problem is
Eastern Daylight Savings Time = Greenwich mean time GMT - 4
Eastern Daylight Savings Time + 4 = Greenwich mean time GMT
Solving for the time equivalence in Greenwich mean time
Greenwich mean time GMT = Eastern Daylight Savings Time + 4
substituting known values
Greenwich mean time = 1 : 31 : 45 PM + 4
Greenwich mean time = 5 : 31 : 45 PM
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(b) Let M be the function defined by M (x) = f(x) + h (x). Find M' (3).
Answers
Answer:
You will need to use information from (a)
b) Mrs. Maharjan can do part of a work in 1 day. She worked for 2 days and left. The remaining parts of the work is done by Mrs. Rai. (i) How much work did Mrs. Maharjan do in 2 days? (ii) How much work was left to do? (iii) How much work was done by Mrs. Rai?
Answers
i) The amount of work that Mrs. Maharjan did in 2 days is; ¹/₃ parts
ii) The amount of work that was left to do is; ²/₃ parts
iii) The amount of work that was done by Mrs. Rai is; ²/₃ parts
How to solve fraction word problems?We are told that Mrs. Maharjan can do ¹/₆ part of a work in 1 day.
Thus;
i) Amount of work done in two days = ¹/₆ + ¹/₆ = ¹/₃ part
This represents the amount of work that Mrs. Maharjan did in 2 days.
(ii) Since Mrs. Maharjan did ¹/₃ part of the work in 2 days, then it means that the amount of work that was left to do is;
1 - ¹/₃ = ²/₃ parts
(iii) Since we are told that Mrs. Rai did the remaining works, the the amount of work that was done by Mrs. Rai is as calculated in ii above.
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Complete question is;
Mrs. Maharjan can do ¹/₆ part of a work in 1 day. She worked for 2 days and left. The remaining parts of the work is done by Mrs. Rai.
(i) How much work did Mrs. Maharjan do in 2 days?
(ii) How much work was left to do?
(iii) How much work was done by Mrs. Rai?
Answer for 10 points!
Answers
The computation of (9 × 20 + 60) ÷ 4 - 16 + 4 × (20 × 5) is 444.
How to simplify an expression?The expression can be simplified using PEMDAS rule.
Therefore,
P = parenthesisE = exponentialM = multiplicationD = divisionA = additionS = subtractionHence, we have to simplify the expression according to the operator that comes first in the PEMDAS rule.
Therefore,
(9 × 20 + 60) ÷ 4 - 16 + 4 × (20 × 5)
(180 + 60) ÷ 4 - 16 + 4 × 100
240 ÷ 4 - 16 + 400
60 - 16 + 400 = 444
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The interest rate on your loan is lowered from 3.5% to 3%
A) What is the percentage change
B) what is the percentage point of change
I NEED HELP ASAP!! ITS URGENT
Answers
If the interest rate on your loan is lowered from 3.5% to 3%:
A) The percentage change is 14.28%
B) The percentage point of change is 0.5%
What is meant by interest rate?A portion of the total loan amount that the borrower is required to pay the lender as interest over a predetermined timeframe. An interest rate is the percentage of a loan, deposit, or borrowing that must be paid in interest each period (called the principal sum). The total amount of interest charged depends on the amount lent or borrowed, the interest rate, the frequency of compounding, and the length of time it was lent, deposited, or borrowed.
Let the capital will be 100
For interest rate 3.5% then the loan amount will be:
100×(3.5/100)=3.5
For interest rate 3% then the loan amount will be:
100×(3/100)=3
A) Percentage change=((-3.5+3)/3.5)×100
=(-0.5/3.5)×100
=14.28%
B) Percentage point of change=3.5%-3.0%
=0.5%
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25^x = 5^4x+1
what is the value of x? pls help me :(
Answers
Answer:
x = -0.5
Step-by-step explanation:
[tex]factors \: of \: 25 \\ 25 = 5 {}^{2} \\ 5 {}^{(2)x} = 5 {}^{4x + 1} \\ since \: bases \: are \: equal \: \\ hence \: exponents \: are \: equal \\ 2x = 4x + 1 \\ collect \: like \: term \\ 2x - 4x = 1 \\ - 2x = 1 \\ divide \: by \: - 2 \: both \: sides \\ x = - 0.5[/tex]
the degree to which an instrument appears to measure what it is supposed to be measuring is referred to as:
Answers
you roll a 6-sided die two times. what is the probability of rolling a 6 and then rolling a 4
Answers
Step-by-step explanation:
the same as every other individual outcome of a roll of 2 dice : 1/6 × 1/6 = 1/36
Which is the domain of the function f(x) = negative five-sixths (three-fifths) superscript x?all real numbersall real numbers less than 0all real numbers greater than 0all real numbers less than or equal to 0.
Answers
The function's domain is (a) all real numbers.
What is the domain in math?The range of values that we are permitted to enter into our function is known as the domain of a function. The x values for a function like f make up this set. A function's range is the set of values it can take as input. After we enter an x value, the function outputs this set of values.
How do you identify the domain?The formula for the function is: f(x) = Negative 5/6. X in superscript?
The function mentioned above is exponential
There are no input value restrictions for exponential functions
Consequently, the function's domain is (a) all real numbers.
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