Determine whether the stated conclusion is valid based on the given information. If not, write invalid. Explain your reasoning.Given: An angle bisector divides an angle into two congruent angles. →KM is an angle bisector of ∠J K L .
Conclusion: ∠J K M ≅ ∠M K L battery is dead.

The percentile rank of a student who earns a quantitative GRE score of 142 is 18.18%

We are given that;

The score= 142

Now,

According to the GRE score percentiles for 2020-20211,

A quantitative GRE score of 142 corresponds to the 7th percentile.

This means that 7% of test-takers scored below 142 on the quantitative section.

A good GRE percentile on the quantitative section depends on your target program, but generally speaking, a score above 165 is considered competitive

Therefore, by percentage the answer will be 18.18%.

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Answer:

30,324

Step-by-step explanation:

30,000 x 4.5 = 135.00

135.00 x 4 + 540.00 four quarters in a year

6 years  x 540 = 3,240

30,000 + 3,240 = 33. 240

Answer:

7 hours and 12 minutes

Step-by-step explanation:

there are 24 hours in a day, so multiply 6/20 by 24 to find the number of hours:

6*24/20 = 36/5 = 7  1/5 hours

we now know maria sleeps for 7 whole hours

next, there are 60 minutes in an hour, so multiply 1/5 by 60 to get 12 minutes

Answer:

Step-by-step explanation:

2-(-1\8)±-7\4 then

2 plus 1\8 plus -7\4

2 plus 1\8 plus -14\8

2 -13\8

2= 16/8

3\8?

Answer:

3/8

Step-by-step explanation:

Substitute given information into given equation

b=2, c=-7/4

2-(-1/8) + - 7/4

Make 2 into 16/8 (by multiplying it by 8/8 To make denominator the same)

16/8 -(-1/8) + -7/4

17/8 (Because when negative and negative will make positive)

17/8+ -7/4

Make -7/4 into -14/8 (by multiplying it by 2/2 To make denominator the same)

17/8 -14/8 (Because negative and positive will make negative)

3/8 is the final answer

I hope this helps, dont hesitate to ask for any question.

Mark me as brainliest is appreciated.Tq!!

Subtract a on both sides:

d - a = fx

Divide f on both sides:

(d - a) / f = x

x = (d - a) / f

Answer:

45 miles

Step-by-step explanation:

first divide miles/minutes: 15 / 20 = 0.75

then multiply: 0.75 x 60 = 45

Answer:

$81.92

Step-by-step explanation:

Week 1:

250 * 20% = 50

250 - 50 = 200

Week 2:

200 * 20% = 40

200 - 40 = 160

Week 3:

160 * 20% = 32

160 - 32 = 128

Week 4:

128 * 20% = 25.6

128 - 25.6 = 102.4

Week 5:

102.4 * 20% = 20.48

102.4 - 20.48 = 81.92

Answer:

3x of 180=8x of 90

Use this equation

Answer

The answer is 18, 24, 24, 25, 26, 28, 30, 32, 33, 44

Step-by-step explanation:

From lowest on the left to highest on the right

ansewer:

25+.33h=34.95 solving for h gives h=(34.95-25)/.33 =30.15 hours. So if you are going to use more than 30 hours it better to go with the flat rate company.

Step-by-step explanation:

You want to find, h, the number of hours of usage that will make the costs for the two equal so

Answer:

b

Step-by-step explanation:

Answer: A sphere (from Greek σφαῖρα—sphaira, "globe, ball") is a geometrical object that is a three-dimensional analog to a two-dimensional circle. A sphere is the set of points that are all at the same distance r from a given point in three-dimensional space. That given point is the center of the sphere, and r is the sphere's radius. The earliest known mentions of spheres appear in the work of the ancient Greek mathematicians.

Step-by-step explanation: The formula used to calculate the sphere radius is: r = ∛((3/4) · V / π) Symbols. r = Sphere radius; V = Sphere volume; π = Pi = 3.14159… The volume of Sphere. Enter the volume contained within a sphere. The radius of Sphere. This is the radius of a sphere that corresponds to the specified volume.

Answer:

1.75

Step-by-step explanation:

1.75 :) you can check your answer by multiplying by 3!

Brainliest would be appreciated

Answer: \(16x^2-102x+77\)

Step-by-step explanation:

1) distribute

\((-8x+7)(4x+2)\\-32x^2-16x+28x+14\\-32x^2+12x+14\)

2) distribute

\((-8x+7)(6x-9)\\-48x^2+72x+42x-63\\-48x^2+114x-63\)

3) solve

\((-32x^2+12x+14)-(-48x^2+114x-63)\\(-32x^2+12x+14)+(48x^2-114x+63)\\16x^2-102x+77\)

The distribution is hypergeometric kind of distribution, h(x; 6, 8, 19)

The hypergeometric distribution is a discrete probability distribution in probability theory and statistics that describes the probability of k successes in n draws, without replacement, from a finite population of size N containing exactly K features, where each draw is either a success or a failure.

We know from the task that: eight of the nineteen people who are scheduled to take the driving test for the first time will be at a particular DMV office on a specific day. Let x be the number of people taking the test for the first time, and let six of these people be randomly assigned to a particular examiner.

Thus, We conclude that it is the hypergeometric distribution:

h(x; 6, 8, 19).

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Answer:

6632.55

Step-by-step explanation:

P=A*(1+r/100)^x

P=6250*(1+2/100)^3

P=6632.55

Answer:

$6632.55

Step-by-step explanation:

→ Find the multiplier

( 100 + 2 ) ÷ 100 = 1.02

→ Multiply the investment by the multiplier to the power of years

6250 × ( 1.02 )³ = 6632.55

Answer:

25x²-60x+36

Step-by-step explanation:

(5x-6)²

Expand the brackets.

(5x-6)(5x-6)

5x(5x-6)-6(5x-6)

Multiply.

25x²-30x-30x+36

Add or subtract the like terms.

25x²-60x+36

Perfect squares trinomials are those expressions which are found by squaring binomial expressions. The expansion of the given binomial expression, (5x - 6)² is (25x² + 36 - 60x).

Perfect squares trinomials are those expressions which are found by squaring binomial expressions. A few examples of perfect squares trinomials are,

a² + b² + 2ab = (a + b)²

a² + b² - 2ab = (a - b)²

The expansion of the given binomial expression, (5x - 6)² can be done as,

(5x - 6)²

= (5x)² + 6² - 2(5x)(6)

= 25x² + 36 - 60x

Hence, The expansion of the given binomial expression, (5x - 6)² is (25x² + 36 - 60x).

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Answer:

37:39

Step-by-step explanation:

You write the amount of circles then add 37 to 2 and make a ratio table.

Answer: 37:39

Step-by-step explanation: there are 37 circles and there are 39 shapes in all (37 circles plus the two hearts)

Answer:

(5x + 2) - (-9x - 2)

O 11x2 – 5x + 8

14x + 4

–6x2 + 8x 7

-X2 + 6

Step-by-step explanation:

Answer:

\( \boxed{ \bold{ \huge{ \boxed{ \sf{14x + 4}}}}}\)

Step-by-step explanation:

\( \sf{(5x + 2) - ( - 9x - 2)}\)

When there is a ( - ) sign in front of an parentheses in an expression , change the sign of each term in the expression. Also, remove the parentheses

\( \dashrightarrow{ \sf{5x + 2 + 9x + 2}}\)

Collect like terms

\( \dashrightarrow{ \sf{14x + 2 + 2}}\)

Add the numbers : 2 and 2

\( \dashrightarrow{ \sf{14x + 4}}\)

Hope I helped!

Best regards! :D

Yes, this is true. Correlation between two variables, Y and X, can range from -1 to +1.

The correlation coefficient, ρYX, tells us the strength of the linear relationship between Y and X, and it ranges from -1 to +1. A correlation of -1 indicates a perfect negative linear relationship, while a correlation of +1 represents a perfect positive linear relationship. The value of 0 indicates that no relationship exists between the two variables.

The formula for covariance is Cov (Y, X) = σYX = E[(Y - μY)(X - μX)]. Therefore, the covariance between two variables also lies between -1 to +1. The covariance measures how two variables change with respect to each other. A positive covariance means that two variables are positively related, while a negative covariance indicates that two variables are inversely related. A zero covariance means that the two variables are independent of each other.

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The statement which is true about the two equilateral triangles is b)The two triangles are the same shape but not the same size. So, correct option is b.

In calculation, a symmetrical triangle is a triangle where every one of the three sides have a similar length. In the natural Euclidean calculation, a symmetrical triangle is likewise equiangular; that is, every one of the three inward points are additionally compatible to one another and are each 60°. It is likewise an ordinary polygon, so it is additionally alluded to as a normal triangle.

Some of hypotheses which are made sense of utilizing symmetrical triangle:

The side length of the primary symmetrical triangle is 3 inches.The side-length of the second symmetrical triangle is 4 inches.Since both the triangles are symmetrical triangles, in this way they have same shape.

Be that as it may, the two triangles have different side lengths in this way they have different size.

Hence, option b is correct.

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(Complete question) is:

on a piece of paper, use a protractor and a ruler to construct two equilateral triangles: one with a side length of 3 inches and one with a side length of 4 inches. which statement is true about the two triangles?

a. The two triangles are the same size but not the same shape.

b. The two triangles are the same shape but not the same size.

c. The two triangles are the same size and same shape.

d. It is impossible to construct equilateral triangles with these side lengths.

Answer:

X=30

Step-by-step explanation:

y=kx

6=10k

k=0.6

y=0.6x

18=0.6x

X=18/0.6

x=30

The value of x when y = 18 is 30.

Direct variations are defined as the functions of the form y = kx, where k is a constant.

Here when y increases, x increases and if y decreases, x also decreases.

Given that y varies directly as x.

That is the equation relating y and x can be written as,

y = kx, for some constant k.

Given that,

When x = 10, the value of y = 6.

Substitute in the equation.

6 = 10k

k = 6/10 = 3/5

Now we have to calculate the value of x when y = 18.

Substitute the found values and given values in the equation.

18 = (3/5) x

x = (18 × 5) / 3

x = 30

Hence the value of x is 30 when y = 18.

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The exponential function f(x) = 2^x is given by the blue graph on the given graph.

The horizontal asymptote of a function is the value of f(x) as x goes to infinity, as long as this value is different of infinity.

The function in this problem is defined as follows:

y = 2^x.

Two relevant numeric values are given as follows:

Hence the function is represented by the blue graph.

The horizontal asymptote is of y = 0, as when x goes to negative infinity, y goes to zero.

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The diver's velocity during the first 2 sec of fall using the modified Euler method with Ar= 0.2 is 62.732 mph.

Given data: Initial velocity, u = 0 ft/sec

Acceleration, a = g = 32.2 ft/sec²

The maximum rate of fall, vmax = 80 mph

Time, t = 2 seconds

Air resistance constant, Ar = 0.2

We are supposed to determine the sky diver's velocity during the first 2 seconds of fall using the modified Euler method.

The governing equation for the velocity of the skydiver is given by the following:

ma = -m * g + k * v²

where, m = mass of the skydive

r, g = acceleration due to gravity, k = air resistance constant, and v = velocity of the skydiver.

The equation can be written as,

v' = -g + (k / m) * v²

Here, v' = dv/dt = acceleration

Hence, the modified Euler's formula for the velocity can be written as

v1 = v0 + h * v'0.5 * (v'0 + v'1)

where, v0 = 0 ft/sec, h = 2 sec, and v'0 = -g + (k / m) * v0² = -g = -32.2 ft/sec²

As the initial velocity of the skydiver is zero, we can write

v1 = 0 + 2 * (-32.2 + (0.2 / 68.956) * 0²)0.5 * (-32.2 + (-32.2 + (0.2 / 68.956) * 0.5² * (-32.2 + (-32.2 + (0.2 / 68.956) * 0²)))

v1 = 62.732 mph

Therefore, the skydiver's velocity during the first 2 seconds of fall using the modified Euler method with Ar= 0.2 is 62.732 mph.

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We can say about model is that the significance level for SAT indicates the slope is equal to zero. The correct answer is D.

The level of significance for the overall model is indicated by the "Significance F" value in the ANOVA table. In this case, the Significance F value is 2.42144E-05, which is very small (less than 0.05), indicating that the overall model is significant.

However, the significance level for the coefficient of SAT is 2.42E-05, which is also very small, indicating that SAT is a good predictor of starting salary and the slope is not equal to zero. The significance level for the intercept is 0.008324, which is also small, indicating that the intercept is very significantly different from zero. Therefore, option D is the correct answer.

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--The given question is incomplete, the complete question is given

"  A prediction equation for starting salaries in $1,000s) and SAT scores was performed using simple linear regression. In the regression printout shown below, what can be said about the level of significance for the overall model? SUMMARY OUTPUT Regression Statistics Multiple R 0.935018123 R Square 0.87425889 Adjusted R Square 0.860287655 Standard Error 3.307295949 Observations 11 ANOVA df Regression Residual Total 1 9 10 SS MS F Significance F 684.4652324 684 4652 62.57564 2.42144E-05 98.44385847 10.93821 782 9090909 Intercept SAT Coefficients Standard Error Stat P.value Lower 95% -29.14060468 8.660080997 -3.36493 0.008324 -48.73108387 0.065443841 0.008273059 7.910476 2.42E-05 0.046728866 Select one: A. The significance level for the intercept indicates the model is not valid B. The significance level for SAT indicates the slope is not equal to zero. CSAT is not a good predictor for starting salety D. The significance level for SAT indicates the slope is equal to zero E None of the above"--

A.  This tells us that a patient with this disease will never fully recover and will likely experience relapses throughout their lifetime.

(b) To calculate the 2-step transition matrix, we can simply multiply the original transition matrix by itself: P^2

F.  we get:

π = (0.2143, 0.1429, 0.2857, 0.3571)

G.  The expected annual cost per patient when the system is in steady state is $3628.57.

(a) To classify the states as transient or recurrent, we need to check if each state is reachable from every other state. From the transition matrix, we see that all states are reachable from every other state, which means that all states are recurrent. This tells us that a patient with this disease will never fully recover and will likely experience relapses throughout their lifetime.

(b) To calculate the 2-step transition matrix, we can simply multiply the original transition matrix by itself: P^2 = ⎝

⎛

​

4/16   6/16   4/16   2/16

1/16   5/16   6/16   4/16

0      1/8    5/8    3/8

0      0      0      1

⎠

⎞

​

(c)

(i) To find the probability that a patient whose symptoms are moderate will be permanently disabled two years later, we can look at the (2,4) entry of the 2-step transition matrix: 6/16 = 0.375

(ii) To find the probability that a patient whose symptoms are under control will have severe symptoms one year later, we can look at the (1,3) entry of the original transition matrix: 0

(d) To calculate the probability that a patient whose symptoms are moderate will have severe symptoms four years later, we can look at the (2,3) entry of the 4-step transition matrix: 0.376953125

(e) The new transition matrix would look like this:

⎝

⎛

​

0.75   0      0      0.25

0      0.75   0.25   0

0      0.75   0.25   0

0      0      0      1

⎠

⎞

​

To classify the states as transient or recurrent, we need to check if each state is reachable from every other state. From the new transition matrix, we see that all states are still recurrent.

(f) To find the stationary distribution of the new chain, we can solve the equation Pπ = π, where P is the new transition matrix and π is the stationary distribution. Solving this equation, we get:

π = (0.2143, 0.1429, 0.2857, 0.3571)

(g) The expected annual cost per patient when the system is in steady state can be calculated as the sum of the product of the steady-state probability vector and the corresponding cost vector for each state:

0.2143(0) + 0.1429(1000) + 0.2857(2000) + 0.3571(8000) = $3628.57

Therefore, the expected annual cost per patient when the system is in steady state is $3628.57.

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Answer:

90

Step-by-step explanation:

Answer:

the probability that they find enough subjects for their​ study is 0.9515

Step-by-step explanation:

From the given information:

Let X be the random variable that follows a normal distribution.

Therefore:

X \(\sim\)Binomial(n=733,p=0.04)

\(\mu = np\)

\(\mu = 733*0.04\)

\(\mu = 29.32\)

\(\sigma = \sqrt{np(1-p)}\)

\(\sigma = \sqrt{29.32(1-0.04)}\)

\(\sigma = \sqrt{29.32(0.96)}\)

\(\sigma = \sqrt{28.1472}\)

\(\sigma = 5.305\)

The probability of P(X ≥ 21) lies in the region between 20.5 and 21.5 by considering a discrete contribution of a continuous normal distribution. Eventually, X > 20.5

∴

P(X >20.5)= P(Z > z)

Using  standard normal z formula:

\(z = \dfrac{x-\mu}{\sigma}\)

\(z = \dfrac{20.5-29.32}{5.305}\)

\(z = \dfrac{-8.82}{5.305}\)

\(z = -1.662582\)

z = -1.66

P(X >20.5)= P(Z > -1.66)

From the standard z tables ;

P(X >20.5)= 1 - 0.0485

P(X >20.5)= 0.9515

Answer:

Number 2

Step-by-step explanation:

So you first gotta open the parentheses: When you multiply them you add the exponents

You get x^5/6 + 2x^7/3

Answer:

#2

Step-by-step explanation:

So you first gotta open the parentheses: When you multiply them you add the exponents

You get x^5/6 + 2x^7/3