The average of a sample of high daily temperature, the 90% confidence interval for the average temperature in the desert, based on the given sample data, is within a specific range.
To calculate the 90% confidence interval, we can use the formula:
Confidence Interval = Average ± (Critical Value) * (Standard Deviation / √Sample Size)
Since the sample size is 26 and we want a 90% confidence interval, we need to determine the critical value for a 90% confidence level. By referring to a t-distribution table or using statistical software, we can find that the critical value for a 90% confidence level with a sample size of 26 is approximately 1.708.
Substituting the values into the formula, we get:
Confidence Interval = 114 ± (1.708) * (5 / √26)
Calculating this expression, we obtain the confidence interval for the average temperature. The lower bound of the interval will be 113.36 degrees F, and the upper bound will be 114.64 degrees F. Therefore, we can state that we are 90% confident that the true average temperature in the desert falls within the range of 113.36 to 114.64 degrees F, based on the given sample data.
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Given are five observations collected in a regression study on two variables:
xi 2 6 9 13 20
yi 7 18 9 26 23
a) Develop a scatter diagram for these data.
b) Develop the estimated regression equation for these data
c) Use the estimated regression equation to predict the value of y when x = 6.
d) What percentage of the total sum of squares can be accounted for by the estimated regression equation?
e) What is the sample correlation coefficient?
f) What is the value of the standard error of the estimate?
g) Test for a significant relationship by using the t test. UseImage for Given are five observations collected in a regression study on two variables: a) Develop a scatter diagram f?=.05.
a) The scatter diagram is shown below.
b) The estimated regression equation for the given data is given as [tex]y = 5.47 + 1.18x[/tex].
c) When x = 6, the estimated value of y is approximately 12.65.
d) T
e) The sample correlation coefficient is approximately 0.8107.
f) In this case, the standard error of the estimate is approximately 5.10.
g) Without these details, it is not possible to conduct the t-test.
What is a scatter diagram?Scatter diagram is a visual representation of data points plotted on a Cartesian coordinate system. It is used to display the relationship between two variables.
a) To develop a scatter diagram, plot the given data points (xi, yi) on a graph, where xi represents the values of the independent variable and yi represents the values of the dependent variable. The scatter diagram is shown below.
b) To develop the estimated regression equation, we need to find the equation of the line that best fits the data points. This line represents the relationship between the independent variable (x) and the dependent variable (y). The estimated regression equation is given by:
y = a + bx
where "a" represents the y-intercept and "b" represents the slope of the line.
Using statistical methods such as least squares regression, the estimated regression equation can be calculated. In this case, the estimated regression equation is:
y = 5.47 + 1.18x
c) To predict the value of y when x = 6, substitute x = 6 into the estimated regression equation:
y = 5.47 + 1.18(6)
y = 12.65
Therefore, when x = 6, the estimated value of y is approximately 12.65.
d) The percentage of the total sum of squares accounted for by the estimated regression equation is given by the coefficient of determination (R-squared). It represents the proportion of the total variation in the dependent variable (y) that can be explained by the independent variable (x) through the estimated regression equation.
In this case, the coefficient of determination (R-squared) is 0.6563, or approximately 65.63%. This means that the estimated regression equation can account for about 65.63% of the total variation in the dependent variable.
e) The sample correlation coefficient (r) measures the strength and direction of the linear relationship between the two variables. In this case, the sample correlation coefficient is approximately 0.8107, indicating a strong positive linear relationship between the variables.
f) The standard error of the estimate measures the average distance between the observed data points and the predicted values from the regression equation. In this case, the standard error of the estimate is approximately 5.10.
g) To test for a significant relationship using the t-test, you would need additional information such as the sample size and the significance level (α) specified in the question. Without these details, it is not possible to conduct the t-test.
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A triangle has lengths of 3 cm, 5 cm, and 9 cm, can it form 1 or more triangles?
Answer:Yes
Step-by-step explanation:
p(a) = 4a +4
What is the coefficient of a?
[tex] \huge \red {Question}[/tex]
p(a) = 4a +4
What is the coefficient of a?
[tex] \huge \red{Answer}[/tex]
4 is the coefficient of a .
Step-by-step explanation:
4 is the coefficient of a .
Please help me with this question
Answer:
100
Step-by-step explanation:
130 - 30 = 100
Pls help! question is on picture, will mark brainlyest if its right
Answer:
sine=opposite/hypotenuse
sine=6/10
sine=0.6
sine^-1 0.6
=36.87
2-13^3-10(23+21) = X
Answer:
x= -2635
Step-by-step explanation:
2 - 2197 - 10 x 44 = x
2- 2197 - 440 = x
-2635 = x
Answer:
x= -2635
Step-by-step explanation:
2 - 2197 - 10 x 44 = x
2- 2197 - 440 = x
-2635 = x
In P2, find the change-of-coordinates matrix from the basis B={1−2t+t2,3−5t+4t2,2t+3t2} to the standard basis C={1,t,t2} Then find the B coordinate vector for −1+2t I know how to do the first part. P from B to C:⎡⎣⎢1−213−54023⎤⎦⎥
I do not know what the process is for finding the B coordinate vector though. Can someone give me a place to start for doing that?
The B coordinate vector [tex]-1+2t[/tex] is [tex][5, -8, 5].[/tex]
What is a Coordinate vector?
A coordinate vector is a representation of a vector in terms of a specific basis. It expresses the vector as a linear combination of the basis vectors, with the coefficients indicating how much of each basis vector is needed to construct the original vector.
In linear algebra, given a vector space V with a basis B = {v₁, v₂, ..., vₙ}, a vector v in V can be written as v = c₁v₁ + c₂v₂ + ... + cₙvₙ, where c₁, c₂, ..., cₙ are the coefficients or coordinates of the vector v with respect to the basis B.
To find the coordinate vector of a given vector in the basis B, we can follow these steps:
Write the vector in terms of the basis B. In this case, we have the vector [tex]-1+2t.\\-1+2t = (-1) * (1-2t+t^2) + 2 * (3-5t+4t^2) + 0 * (2t+3t^2) = -1 + 2t - t^2 + 6 - 10t + 8t^2 + 0t + 0t^2 = 5t^2 - 8t + 5[/tex]
Express the vector obtained in step 1 as a linear combination of the basis vectors [tex]C={1,t,t^2}.[/tex] This will give us the coordinate vector.
[tex]5t^2 - 8t + 5 = a * 1 + b * t + c * t^2[/tex]
Equating the coefficients of corresponding powers of t on both sides, we have:
[tex]a = 5\\b = -8\\c = 5[/tex]
So, the coordinate vector of [tex]-1+2t[/tex] in the basis
[tex]B={1-2t+t^2,3-5t+4t^2,2t+3t^2}[/tex] is [tex][a, b, c] = [5, -8, 5].[/tex]
Therefore, the B coordinate vector [tex]-1+2t[/tex] is [tex][5, -8, 5].[/tex]
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} .println(); } what is printed as a result of executing this code segment? a e i
The code segment will print the characters 'a', 'e', and 'i' on separate lines.
The code segment appears to be part of a loop structure, which is likely iterating over a collection of characters. Each character is printed on a new line using the '.println()' function. The loop is not provided in the given code segment, so it's unclear how the characters are being generated or selected. However, assuming that the loop iterates over the characters 'a', 'e', and 'i', the output will be as follows:
a
e
i
The code uses the '.println()' function, which adds a line break after each character is printed. As a result, each character will be displayed on a separate line. The lack of surrounding code or context prevents a more specific explanation, but based on the given information, we can conclude that executing this code segment would output the characters 'a', 'e', and 'i' on separate lines.
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Let T: R³ R³ be a linear transformation such that T(1, 0, 0) = (-1, 4, 2), 7(0, 1, 0) = (1, 3, -2), and 7(0, 0, 1) = (0, 2, -2). Find the indicated image. T(1, -3, 0). T(1, -3,0) =
The image of the vector (1, -3, 0) under the linear transformation T is (-4, -5, 8).
The linear transformation T: R³ → R³, defined by T(1, 0, 0) = (-1, 4, 2), T(0, 1, 0) = (1, 3, -2), and T(0, 0, 1) = (0, 2, -2), can be used to find the image of the vector (1, -3, 0) under T.
To find the image of the vector (1, -3, 0) under the linear transformation T, we can use the linearity property of the transformation. Since T is a linear transformation, we can express any vector v = (x, y, z) as a linear combination of the standard basis vectors (1, 0, 0), (0, 1, 0), and (0, 0, 1).
The given information states that T(1, 0, 0) = (-1, 4, 2), T(0, 1, 0) = (1, 3, -2), and T(0, 0, 1) = (0, 2, -2). Using these values, we can express (1, -3, 0) as a linear combination:
T(1, -3, 0) = T(1, 0, 0) - 3T(0, 1, 0) + 0T(0, 0, 1)
= (-1, 4, 2) - 3(1, 3, -2) + 0(0, 2, -2)
= (-1, 4, 2) - (3, 9, -6) + (0, 0, 0)
= (-1 - 3 + 0, 4 - 9 + 0, 2 + 6 + 0)
= (-4, -5, 8)
Therefore, the image of the vector (1, -3, 0) under the linear transformation T is (-4, -5, 8).
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Can i get help please i will mark brainlest
Answer:
7. 78
8. 169
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
What are the solutions of the system? y = -6x – 6 y = x2 – 5x – 6
Answer:
Answer is 0
Step-by-step explanation:
-6x-6=x²-5x-6
-6(x+1)=(x+1)(x-6)
-6=x-6
x=0
Does anyone mind helping me im confused-
Answer:
Malcolm owes the greatest amount.
Step-by-step explanation:
The question is asking for the amount owed by each person. That just means you take the absolute value of their bank balance if their bank balance is negative. Absolute value is just how far away the number is from zero (basically when a number is negative, you're just making it positive).
Sophia owes $150, Malcolm owes $325, and Oren owes $275.
325 > 275 > 150
Thus Malcolm owes the most, since his amount owed is the highest.
Find the length of side x in simplest radical form with a rational denominator.
Answer:
since it is Right angled isosceles triangle it's base side are equal
by using Pythagoras law
x²+x²=1²
2x²=1
x=√{1/2}or 0.707 or 0.71
The USA Olympic Synchronized Swimming Team is designing a routine for their upcoming competition. From the center of the pool, they moved 2 feet to the right and 4 feet up to create the center of their formation (Point
C). From the center of their formation, they then formed a circle that goes through a point 3 feet to the left and 4 feet up (Point D). What is the equation of the circle?
Select the correct answer chorice below.
(x _ _)^2 _ (y_ _)^2 = _
[tex]\left(x-2\right)^{2}+\left(y-4\right)^{2}=25[/tex]
Hope this helps!
The equation of circle is [tex](x-2)^{2}+(y-4)^{2} =25[/tex]
Equation of circle:The equation of circle is given as,
[tex](x-h)^{2}+(y-k)^{2} =r^{2}[/tex]
Where [tex](h,k)[/tex] is the coordinate of center and r is radius.
From the given figure,
It is observed that, the center of circular pool is (2, 4)
and radius is 5.
substitute the value of center and radius in above equation.
[tex](x-2)^{2}+(y-4)^{2} =5^{2}\\\\(x-2)^{2}+(y-4)^{2} =25[/tex]
The equation of circle is [tex](x-2)^{2}+(y-4)^{2} =25[/tex]
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Solve the following system of linear equations using Gaussian Elimination Method with Partial Pivoting. Show all steps of your calculations. 0.5x - 0.5y + z = 1 -0.5x + y - 0.5z = 4 X - 0.5 + 0.5z = 8
the solution of system of linear equations is x = 27/2, y = 21/2, z = -1/2
To solve the system of linear equations using the Gaussian Elimination Method with Partial Pivoting, we'll perform the following steps:
Step 1: Set up the augmented matrix for the system of equations.
Step 2: Perform row operations to eliminate variables below the main diagonal.
Step 3: Back-substitute to find the values of the variables.
Let's proceed with the calculations:
Step 1: Augmented matrix setup
The augmented matrix for the system of equations is:
[ 0.5 -0.5 1 | 1 ]
[-0.5 1 -0.5 | 4 ]
[ 1 -0.5 0.5 | 8 ]
Step 2: Row operations
[ 0.5 -0.5 1 | 1 ]
[-0.5 1 -0.5 | 4 ]
[ 1 -0.5 0.5 | 8 ]
R₂ -> R₂ + R₁
[ 0.5 -0.5 1 | 1 ]
[0 0.5 0.5 | 5 ]
[ 1 -0.5 0.5 | 8 ]
R₃ -> R₃ - 2R₁
[ 0.5 -0.5 1 | 1 ]
[0 0.5 0.5 | 5 ]
[ 0 0.5 -1.5 | 6 ]
R₃ -> R₃ - R₂
[ 0.5 -0.5 1 | 1 ]
[0 0.5 0.5 | 5 ]
[ 0 0 -2 | 1 ]
The new augmented matrix after the row operations is:
[ 0.5 -0.5 1 | 1 ]
[0 0.5 0.5 | 5 ]
[ 0 0 -2 | 1 ]
Step 3: Back-substitution
Now, we'll back-substitute to find the values of the variables. Starting from the last row, we can directly determine the value of z:
-2z = 1
z = - 1/2
Substituting z = - 1/2 into the second equation, we can find the value of y:
0.5y + 0.5z = 5
0.5y + 0.5(-1/2) = 5
y = 21/2
0.5x - 0.5y + z = 1
0.5x - 0.5(21/2) + (-1/2) = 1
x = 27/2
Therefore, the solution of system of linear equations is x = 27/2, y = 21/2, z = -1/2
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5k + 2 = 6
What is this
the height y (in feet) of a ball thrown by a child is y = − 1/16 x^2 2 x + 3 where x is the horizontal distance in feet from the point at which the ball is thrown.
(a) How high is the ball when it leaves the child s hand?
(b) What is the maximum height of the ball?
(c) How far from the child does the ball strike the ground?
(a) The ball's height when it leaves the child's hand is 3 feet.
(b) The maximum height of the ball is 3.5625 feet.
(c) The ball strikes the ground approximately 32 feet away from the child.
The ball strikes the ground approximately -16 + 32√(22) feet away from the child in the forward direction.
(a) To find the height of the ball when it leaves the child's hand, we need to determine the value of y when x is zero. Plugging x = 0 into the equation y = -1/16x^2 + 2x + 3, we get:
y = -1/16(0)^2 + 2(0) + 3
y = 3
Therefore, the ball is 3 feet high when it leaves the child's hand.
(b) The maximum height of the ball can be found by finding the vertex of the quadratic function. The x-coordinate of the vertex can be found using the formula x = -b/2a, where a and b are the coefficients of the quadratic equation. In this case, the equation is y = -1/16x^2 + 2x + 3, so a = -1/16 and b = 2. Plugging these values into the formula, we get:
x = -(2)/(2(-1/16))
x = -16/32
x = -1/2
To find the corresponding y-coordinate, we substitute this value back into the equation:
y = -1/16(-1/2)^2 + 2(-1/2) + 3
y = -1/16(1/4) - 1 + 3
y = 1/64 - 64/64 + 192/64
y = 129/64
Therefore, the maximum height of the ball is 129/64 feet.
(c) The ball strikes the ground when its height is zero. To find the distance from the child where this occurs, we set y = 0 and solve for x:
0 = -1/16x^2 + 2x + 3
This equation can be solved using various methods such as factoring, completing the square, or using the quadratic formula. Let's use the quadratic formula here:
x = (-2 ± √(2^2 - 4(-1/16)(3)))/(2(-1/16))
x = (-2 ± √(4 + 3/2))/(2(-1/16))
x = (-2 ± √(11/2))/(2(-1/16))
x = (-2 ± √(11/2))/(-1/8)
x = (-2 ± 4√(22))/(1/8)
Since we're interested in the positive value of x (the ball strikes the ground in the forward direction), we take the positive square root and simplify:
x = (-2 + 4√(22))/(1/8)
x = 8(-2 + 4√(22))
x = -16 + 32√(22)
Therefore, the ball strikes the ground approximately -16 + 32√(22) feet away from the child in the forward direction.
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a winter coat was priced at 200. each month for three months, thr price was reduced by 15. how much was the coat reduced in price
Ariana has 99 oranges. She has to pack 9 boxes with an equal number of oranges. How many oranges should she pack in each box?
Answer:
11 oranges in each box
Step-by-step explanation:
99/9=11
Answer: 11 oranges in each box.
Step-by-step explanation:
Division is used to evenly separate totals into groups (total/#of groups= Quotient per group).
In this case, we divide the total, 99 oranges, by the amount of groups we want, which is 9 boxes, in order to find an even amount for each box from the total oranges.
So, 99/9= 11 oranges per box
The sum of two numbers is 65. One number is 4 times as large as the other. What are the numbers?
Larger number:
Smaller number:
Answer:
Large number =52
small number =13
Step-by-step explanation:
4x + x =65
5x=65
x=13
4x=52
Draw the image of ABC under a dilation whose center is P and scale factor is 1/3
Answer:
there
Step-by-step explanation:
Answer:
khan
Step-by-step explanation:
is it possible to find a power series whose interval of convergence is ? explain. answer no
Yes, it is possible to find a power series whose interval of convergence is [0, ∞).
The interval of convergence for a power series is determined by the behavior of the series as the variable approaches different values. The interval can be open, closed, half-open, or infinite.
In the case of [0, ∞), it represents a right-half open interval, indicating that the power series converges for all values of the variable greater than or equal to 0.
To find such a power series, we need to consider the conditions for convergence. The most common tests for convergence of power series are the ratio test and the root test. If the series satisfies the conditions of either test, it will converge within a specific interval.
For a power series to have an interval of convergence of [0, ∞), the coefficients in the series must satisfy certain conditions, such as convergence of the series for x = 0 and divergence for x > 0. This can be achieved by selecting appropriate coefficients and constructing a power series that converges for x = 0 and diverges for x > 0.
In summary, it is indeed possible to find a power series whose interval of convergence is [0, ∞) by carefully selecting the coefficients to meet the convergence conditions for this interval.
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Complete question is:
Is it possible to find a power series whose interval of convergence is [0, ∞)? Explain.
Given m||n, find the value of x.
t
(8x-7)
(x+16)°
Answer:
82°
Step-by-step explanation:
(8x-7)=(x+16)
x+16+x=180
2x+16=180
2x=180-16
2x=164
2x/2=164/2
x=82°
At a certain bus station, 47% of all arrivals are late. Suppose a random
sample of 12 bus arrivals is examined. Using the binomial function, give the
probability
Complete question :
At a certain bus station, 47% of all arrivals are late. Suppose a random
sample of 12 bus arrivals is examined. Using the binomial function, give the probability of ;
Atleast 8 late arrivals 2) At most 4 late arrivals
Answer:
P(x >= 8) = 0.1411 ;
P(x ≤ 4) = 0.2570
Step-by-step explanation:
Using the binomial probability distribution relation :
P(x =x) = nCx * p^x * (1 - p)^(n - x)
p = 47% = 0.47
1 - p = 0.53
n = 12
A.)
Atleast 8 late arrivals
P(x >= 8) :p(x = 8)+p(x =9)+p(x=10)+p(x=11)+p(x=12)
Using a binomial distribution calculator to save computation time :
P(x >= 8) = 0.141096
P(x >= 8) = 0.1411
B.)
P(x ≤ 4) = p(x=0)+p(x=1)+p(x=2)+p(x=3)+p(x=4)
Using a binomial probability calculator ;
P(x ≤ 4) = 0.25697
P(x ≤ 4) = 0.2570
write an equation of the line passing through the point $\left(5,\ -3\right)$ that is parallel to the line $y=x 2$ .
Given point: (5, -3)Given equation of the line: y = x + 2We are supposed to find the equation of the line passing through the point (5, -3) that is parallel to the line y = x + 2.
First, we need to find the slope of the given line y = x + 2. Here, the slope is 1 as the coefficient of x is 1.Now, a line parallel to this line will also have the same slope. Therefore, the slope of the required line is also 1.Now we have the slope and the point (5, -3) that the line passes through. Using the point-slope form of the equation of a line, we can find the equation of the line that passes through the given point and has the given slope.So, the equation of the line passing through the point (5, -3) that is parallel to the line y = x + 2 is:y - (-3) = 1(x - 5)This can be simplified to obtain the equation in the slope-intercept form:y = x - 8Thus, the equation of the line is y = x - 8.
To find the equation of a line parallel to the line y = x^2 and passing through the point (5, -3), we need to determine the slope of the given line and then use it to construct the equation.
The slope of the line y = x^2 can be determined by taking the derivative of the equation with respect to x. In this case, the derivative is:
dy/dx = 2x
Since the derivative represents the slope of the original line, we know that the slope of the line y = x^2 is 2x. To find the slope of the parallel line, we use the fact that parallel lines have the same slope.
Therefore, the slope of the parallel line is also 2x.
Now, using the point-slope form of a linear equation, we can write the equation of the parallel line:
y - y1 = m(x - x1)
where (x1, y1) is the given point (5, -3) and m is the slope.
Plugging in the values, we have:
y - (-3) = 2x(x - 5)
Simplifying further:
y + 3 = 2x^2 - 10x
Rearranging the equation to the standard form:
2x^2 - 10x - y - 3 = 0
So, the equation of the line passing through the point (5, -3) and parallel to the line y = x^2 is 2x^2 - 10x - y - 3 = 0.
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We have to find the equation of the line passing through the point [tex]$(5,-3)$[/tex] that is parallel to the line [tex]$y=x+2$[/tex].
Therefore, the equation of the line passing through the point [tex]$(5,-3)$[/tex] and parallel to the line [tex]$y=x+2$[/tex] is:
[tex]$y=x-8$[/tex].
As we know, the parallel lines have the same slope. Therefore, the slope of the line passing through the point (5,-3) will be the same as the slope of the line y=x+2.
Thus, we can write the slope-intercept form of the equation of the line y = mx + b as follows:
y = mx + b ------(1)
Here, m is slope of the line, b is y-intercept of the line. For the line y=x+2, slope of the line is:
m=1
Now, we will find the value of b for the line y = mx + b passing through the point (5,-3).
[tex]$$-3=1\times5+b$$$$[/tex]
[tex]b=-8$$[/tex]
Therefore, the equation of the line passing through the point (5,-3) and parallel to the line y=x+2 is:
y=x-8
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Jasmine had 20 dollars to spend on 3 gifts. She spent 9 1 4 dollars on gift A and 4 4 5 dollars on gift B. How much money did she have left for gift C
Answer:
5 2/6
Step-by-step explanation:
you have to mutiply
What is 0.5 divided by 2.675
.186915888
that is the answer
if I meant 2.675 divided by .5 it is 5.35
Answer:
you can use a calculator but, its 0.1869158878504672897196261682243
Step-by-step explanation:
Someone help please
Answer:
it is 1000x+2000
Step-by-step explanation:
Layne rode his bike from point a to b by using cherry st . How much further would his trip have been if he took orange drive and peach avenue instead ? Point a 85 point b 77
Answer:
cherry street is 85 yards, while orange dr. and peach ave. is 113 yards, meaning that cherry st. is 28 yards faster
Step-by-step explanation:
85 x 85) - (77 - 77) = 1296
square root of 1296 is 36
77 + 36 = 113
113 - 85 = 28
this means that cherry st. is 28 yds faster
using the Pythagorean Theorum
hope i helped
-lvr
Determine if the triangles are similar. If yes, state how (by AA~ SSS~, or SAS~) and complete the similarity statement
Answer:
Similar by: SAS
∠LMQ = ∠PMKLM/PM = QM/KMΔPKM ~ ΔLQM
Yes, the triangles PMK and LMQ are similar by SAS similarity statement.
What is Triangle?A triangle is a three-sided polygon that consists of three edges and three vertices.
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion .
The triangles PKM and triangle LMQ are the similar triangles.
If two sides and the included angle in one triangle are congruent to two sides and the included angle in another triangle, then the two triangles are congruent
Both the triangles have a common angle M and two sides are proportional
∠LMQ = ∠PMK
The sides are proportional
LM/PM = QM/KM
The triangles are similar
ΔPKM ~ ΔLQM
Hence, Yes the triangles PMK and LMQ are similar by SAS similarity statement.
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