Answers
Step-by-step explanation:
imagine that point (-2, -5) on the coordinate grid.
in what quadrant is it ?
it is, where both x and y are negative : the bottom left (3rd) quadrant.
and this is the same quadrant for the circle and the placement of the angle of the point on the circumference to the x-axis (the basic diameter).
what signs do sine and cosine of angles in the third quadrant have ?
sine goes below the x-axis and is therefore negative.
cosine is to the left of the y-axis and is therefore negative.
that eliminates answer c (with positive sine and cosine values).
as tan(x) = sin(x)/cos(x)
and
cot(x) = cos(x)/sin(x)
both, tan and cot, must be positive (-/- = +).
that eliminates answers a and d.
but there is also a problem with the remaining answer b :
cot(x) = 1/tan(x), as the above definitions tell us.
but answer b says that they are both 5/2. and that cannot be.
so, there is no correct answer option.
therefore, let's calculate the real results, and then you need to find the right option in the original problem definition without typos.
the point again is (-2, -5). x = -2, y = -5.
the center of the circle is at the origin.
so, the radius of the circle is per Pythagoras
r = sqrt(x² + y²) = sqrt((-2)² + (-5)²) = sqrt(4 + 25) = sqrt(29)
sin(angle) = y/r = -5/sqrt(29) = -5×sqrt(29)/29
cos(angle) = x/r = -2/sqrt(29) = -2×sqrt(29)/29
tan = sin/cos = -5/sqrt(29) / -2/sqrt(29) = -5/-2 = 5/2
cot = cos/sin = -2/sqrt(29) / -5/sqrt(29) = -2/-5 = 2/5
csc(angle) = r/y = sqrt(29)/-5 = -sqrt(29)/5
sec(angle) = r/x = sqrt(29)/-2 = -sqrt(29)/2
again, except for the error in answer b about cot, it would all point to answer b.
Related Questions
A two-sided test of H0: μ=0, α=0.05 (two sided), yields a p-value of 0.19. Will the 95% confidence interval for μ include 0?
Group of answer choices
No
Unknown
Yes
Answers
Explanation
Rule: if the p-value is smaller than alpha, then we reject the null.
We're given a p-value of 0.19 and alpha = 0.05
Based on that rule, it means we fail to reject the null (i.e. "accept" the null), since the p-value is not smaller than alpha.
Therefore, we conclude that mu = 0 must be the case, which means this value is in the confidence interval.
If mu = 0 was outside the confidence interval, then we would reject the null.
The graphs below have the same shape. The equation of the red graph is
F(x) = x. What is the equation of the blue graph?
G(X) = ?
F(X) =
6
5
O A. G(x) = (x-5)
O B. G(X) = (x+5)
O C. G(x) = x° +5
O D. G(x) = x°-5
Answers
Answer: The graphs below have the same shape. The equation of the blue graph is f(x)=x^2. Which of these is the equation of the red graph, g(x)
Step-by-step explanation:
The equation of the blue graph is,
⇒ G (x) = (x + 5)³
What is Translation?A transformation that occurs when a figure is moved from one location to another location without changing its size or shape is called translation.
We have to given that;
The equation of the red graph is
⇒ F(x) = x³
Now, The graph of blue line is 5 units left to the graph of red graph.
Hence, The equation of the blue graph is,
⇒ G (x) = (x + 5)³
Thus, The equation of the blue graph is,
⇒ G (x) = (x + 5)³
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10 POINTS
FIND THE EXACT VALUES OF cos theta/2 and tan theta/2
Answers
A polygon has one less side than a quadrilateral. What is the polygon?
Answers
The angles in a quadrilateral are 4y - 10°, y + 40°, 3y + 20° and 2y + 10° in order as you go around the quadrilateral.
a) Set up and solve an equation, to find the value of y.
b) Hence work out the value of each angle.
c) What type of quadrilateral is this?
Answers
Answer:
see explanation
Step-by-step explanation:
the sum of the interior angles of a quadrilateral = 360°
sum the 4 angles and equate to 360
4y - 10 + y + 40 + 3y + 20 + 2y + 10 = 360 , that is
10y + 60 = 360 ( subtract 60 from both sides )
10y = 300 ( divide both sides by 10 )
y = 30
then 4 angles are
4y - 10 = 4(30) - 10 = 120 - 10 = 110°
y + 40 = 30 + 40 = 70°
3y + 20 = 3(30) + 20 = 90 + 20 = 110°
2y + 10 = 2(30) + 10 = 60 + 10 = 70°
Since the angles measures are in order around the quadrilateral, then
the opposite angles are congruent, thus quadrilateral is a parallelogram
5. Brandon and Chloe ride their bikes for 4 hours along a flat, straight road. Brandon’s velocity, in miles per
hour, at time t hours is given by a differentiable function B for 0 st 54. Values of B(t) for selected times t
are given in the table above. Chloe's velocity, in miles per hour, at time t hours is given by the piecewise
function C defined by
C(t)
tep
for 0
12 – 3t – 12 for 2 <154.
(a) How many miles did Chloe travel from time t = 0 to time t = 2 ?
Do not write beyond this border.
Do not write beyond this border.
Answers
Answer:
Step-by-step explanation:
a) ∫from 0 to 2 of te^(4-t^2) dt. Let u = 4-t^2. du= -2dt. And, tdt= -dy/2.
If x=0, u= 4 and if x=2, u=0.
Therefore our new integral will be, -(1/2) ∫ from 0 to 4 of e^u du.
= -(1/2)(e^u) | 0 to 4
= -(1/2)(e^0 - e^4)
= -(1/2) + (1/2)e^4
= (1/2)(e^4 -1) miles
Therefore, from t=0 to t=2, Chloe has travelled a distance of (1/2)(e^4-1) miles.
b) At t=3, C(t)=12-3t-t^2
C(t) is already a function of velocity so simply plug in C(3), which is -6 miles/hour.
We also need to know acceleration.
C'(t)= -3 - 2t
C(3)= - 9 miles/hour squared.
Therefore, since velocity and acceleration are both negative, Chloes speed is increasing at t =3 hours.
Which statements describe the graphs? Select two options.
Graph B represents h(x).
Graph B represents j(x).
The y-intercepts of both f(x) and g(x) can be 3.
The y-intercepts of f(x) and g(x) have opposite signs.
The rate of change for both f(x) and g(x) must be negative.
Answers
The statement describes the graph
Graph B represents h(x).Graph B represents j(x).What is linear function?A linear function is a function whose graph is a straight line, that is, a polynomial function of degree zero or one.
Graph B represents h(x).
Graph B represents j(x).
From the question, we have the following parameters:
h(x) = f(x) + g(x)
j(x) = f(x) * g(x)
As, we don't have function of the graphs.
So, all the functions are linear functions, then the slopes of the sum of functions f(x) and g(x) could be greater than the slopes of h(x) and j(x).
The graph h(x) and j(x) is represented by graph B.
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4. Molly spent 1/3 of her summer vacation visiting her grandparents. If she was with them for 19 days, how
long was Molly's summer vacation?
Answers
A robot’s height is 1 meter 20 centimeters. How tall is the robot in millimeters?
A. 1,200 millimeters
B. 1020 millimeters
C. 120 millimeters
D. Not here
Answers
Answer:
A
Step-by-step explanation:
There are 1000 mm in one meter
and there are 10 mm in one cm
so
1000 + 20(10) = 1200mm
Therefore the answer is 1200mm
1 M=1000 mm
20cm=200mm
Total=1200
In a triangle ABC, A=53 Degrees and C= 44Degrees thhen the value of B is:
Answers
180 - 97 = 83
Angle of B is 83 degrees
10(1-7k) + 8( k+9)
Explain please
Answers
Step-by-step explanation:
[tex] = 10(1 - 7k) + 8(k + 9)[/tex]
Sort the expression in descending order....
[tex] = 10( - 7k + 1) + 8( k + 9)[/tex]
Now multiply....
[tex] = - 70k + 10 + 8k + 72[/tex]
Organize the similar terms...
[tex] = - 70k + 8k + 10 + 72[/tex]
[tex] = - 62k + 82[/tex]
hope it helped !!!
What are the coordinates of the point on the directed line segment from (-6, 9)(−6,9) to (4, -1)(4,−1) that partitions the segment into a ratio of 1 to 4?
Answers
Suppose that the world price of baseball caps is €2 and there are no import restrictions on this product. Assume that Spanish
consumers are indifferent between domestic and imported baseball caps.
Instructions: Enter your answers as whole numbers.
a. What quantity of baseball caps will domestic suppliers supply to domestic consumers?
thousand
b. What quantity of baseball caps will be imported?
thousand
Now suppose a tariff of C1 is levied against each imported baseball cap.
C. After the tariff is implemented, what quantity of baseball caps will domestic suppliers supply to domestic consumers?
thousand
d. After the tariff is implemented, what quantity of baseball caps will be imported?
thousand
No
Drov
Answers
Based on the supply and demand of the baseball caps, the relevant supply quantities are:
a. 20,000 baseball caps. b. 60,000 baseball caps.c. 30,000 baseball caps. d. 40,000 baseball caps. What quantity of baseball caps will be supplied domestically?At the price of €2, the supply according to the graph is:
= 20,000 baseball caps.
What quantity will be imported?The quantity imported is shown as:
= Demand at €2 - Domestic supply at €2
= 80 - 20
= 60,000 baseball caps
What quantity will be supplied domestically with the tariff?A tariff of €1 would increase the price to €3.
At this price, the supply would be:
= 30,000 baseball caps.
At the new price, the quantity imported is:
= Demand at €3 - Domestic supply at €3
= 70,000 - 30,000
= 40,000 baseball caps.
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Calculate the Area: 6ft 3ft 8ft
I need this asap
Answers
Answer:
Answer is 72
Step-by-step explanation:
6 times 8 is 48. 3 needs to be divided by 2 to made into 1.5. Then multiply 48 and 1.5 to make 72ft your answer
Answer:
A= 12ft
Step-by-step explanation:
in the diagram, AE is tangent to the circle at point a and secant DE intersects the circle at point C and D. the iines intersect outside of the circle at point E
Answers
EA^2 = EC*CD
12^2 = 8*(x+10)
and now ED = EC+CD = 8+x+10
I suspect a typo somewhere in the murk above
Which graph represents the solution set of the inequality -14 5 < x?
Answers
Answer:
First graphStep-by-step explanation:
-14.5 < x ⇒ x > -14.5
ALL IT SAYS IS SLOVE I REALLY NEED HELP PLEASEEE!!! THANK YOUUU
A. 2 1/16
B. 11/12
C. -11/12
D. -2 1/16
Answers
Answer:
The answer for your question is C
What is the mode? -5 0 -9 0 0 -9
Answers
The mode for this question is 0
ModeIn a set of numbers, the mode is the number that occurs most often. In other words, it measures how frequently a particular number occurs within a set of numbers. It is a type of average, like its counterparts, the median and mean.
To find the mode of a set of numbers,
List the set of numbers in ascending or descending order, including any duplicatesCount the number of times each number in the set of numbers occurs. The number that occurs the highest number of times is the mode of the set of dataA clock shows a time of 6 o'clock. What is the measure
of the angle between the hands of the clock?
How many twelfths are there in 3?
How many degrees are there in of a full turn?
Help please
Answers
Question 1
Answer: 180 degreesReason: The minute and hour hand form a straight line, or straight angle, which is always 180 degrees in measure.
============================================================
Question 2
Answer: 36Reason: Split a pizza into 12 equal slices. Imagine having 3 such pizzas to get 3*12 = 36 slices in total. This leads to the idea that 36*(1/12) = 3.
============================================================
Question 3
Answer: 360 degreesReason: This is by definition of what it means to do a full rotation.
a 4 storey building is 29 feet tall between which two whole numbers does the height of each storey lie?
Answers
Answer:
7 and 8
Step-by-step explanation:
29÷4=7.25 and that is between 7 and 8
javier bought x pounds of olives for $4 per pound and y pounds feta cheese at $2 per pound. write an algebraic expression for the cost of javier’s purchase
Answers
Answer:
4x+2y
Step-by-step explanation:
x=pounds of olives
y= pounds of feta cheese
A sphere has a radius of 7/2 feet. What is the volume of the sphere in cubic feet in terms of pi?
Answers
Answer:
57.15π ft³
Step-by-step explanation:
Volume of a Sphere
4/3πr³Here, radius (r) = 7/2 ft.
Solving
V = 4/3 x π x 7/2 x 7/2 x 7/2V = 4/3 x 343/8 x πV = 343/6 x πV = 57.15π ft³ixl 7th grade math determine the themes................................................................
Answers
Answer:
user could u make the second image attachment more clear cause that thing is blocking the themes
will mark brainlist if you answer:)))
Answers
Answer:
Option 3
Step-by-step explanation:
The interquartile range is the same in both with a value of 12. The median and the third quartile are clearly different with the middle bit of the box and the right bit of the box being in different places and the range is quite different with one being 32 and the other one being 24.
Grace and her friends are playing a game that uses two dice. Each die is a tetrahedron - a four‐sided shape with each side an equilateral triangle. Each side of the die contains one of the digits 1, 2, 3, or 4.
a. Create the sample space of all possible outcomes if you were to roll the two dice
simultaneously. List the digit on the first die first and the digit on the second die
second (i.e. 1,1; 1,2; and so on.)
b. What is the theoretical probability that the sum of the two numbers on a roll will
be five?
c. If Grace and her friends were to roll the two dice 100 times, how many of the
100 times could they expect to roll the same number on each die? (In other
words, the outcome would be 1,1 or 2,2 or 3,3 or 4,4.)
WILL GIVE BRAINLIEST! Please no jokes or links :)
Answers
Answer:
Step-by-step explanation:Very interesting problem. Be thankful it is not a six sided dice.Part A1 11 21 31 42 12 22 32 43 13 23 33 44 14 24 34 4Part BThere are 16 possible out comes1 44 12 33 24 out of the 16 outcomes are possibleP(5) = 4/16 = 0.25Part C The theoretical out come would be 4 times4/16 = 0.25On a hundred rolls, you would expect to get 25 sets of doubles.Step-by-step explanation:
A point located at (-5, -6) is reflected over the x-axis
Answers
(-5,6)
Step-by-step explanation:When a point is reflection a new, prime point (x') is created.
Formula
Whenever a point is reflected over the x-axis it follows a specific rule. The point goes from (x,y) to (x,-y). So, since the point is (-5, -6) we need to switch the sign of the y-value. This creates the new point (-5, 6).
Why?
Another way to remember this formula is to understand where it comes from. When reflecting over the y-axis, a point goes from the top 2 quadrants to the bottom 2 or vice versa. This means that the value is moving vertically. During vertical shifts, there is a change in the y-value. Additionally, because the x-axis is the seperation between negative and positive y-values, the y-value changes signs.
HELP, I NEED THIS MY LIFE DEPENDS ON IT.
Answers
Answer:
it’s D
Step-by-step explanation:
it’s not anything else
ur wlcm :)
hope i helped
brainliest?
Answer:
Congruent (A), Parallel (B), and Discs (D).
Step-by-step explanation:
The bases of a cylinder must be two discs which are congruent and parallel to each other.
A certain circuit is properly fused for a 5-horsepower motor. If the motor is to be replaced by several 5/8 horsepower motors, how many motors will the fuses be able to carry?
Answers
The fuse with a rating of 5 horsepower would be able to carry 8 number of 5/8 horsepower motors.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A certain circuit is properly fused for a 5-horsepower motor. The number of motor, if several 5/8 horsepower motors is used is given by:
Number of motors = 5 hp ÷ (5/8 hp) = 8 motors
The fuse with a rating of 5 horsepower would be able to carry 8 number of 5/8 horsepower motors.
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What is the value of k?
k =
Answers
The angle of elevation to a nearby tree from a point on the ground is measured to be 49
∘
∘
. How tall is the tree if the point on the ground is 53 feet from the tree? Round your answer to the nearest hundredth of a foot if necessary.
Answers
Answer:60.97
Step-by-step explanation: tan 49 = opposite/adjacent = x/53
tan 49 = x/53
tan 49/1 = x/53
53 tan 49 = x
x = 60.969
x = 60.97
The height of tree is 60.97 feet tall on the ground is 53 feet from the tree.
What is a trigonometric function?Trigonometry uses the first six fundamental trigonometric functions. Trigonometric proportions are these functions. The six fundamental trigonometric functions are the sin function, cosine function, secant function, and so on.
As per the data given in the question,
tan 49° = opposite/adjacent
tan 49° = x/53
tan 49/1 = x/53
x = 53 tan 49°
x = 60.969 or,
x = 60.97 feet. (rounding off value)
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