Urn 1 contains 3 red balls and 4 black balls. Urn 2 contains 4 red balls and 2 black balls. Urn 3 contains 6 red balls and 5 black balls. If an urn is selected at random and a ball is drawn, find the probability it will be red.
a. 13/24
b. 1/3
c. 13/1386
d. 379/693

Answer:

its c

Step-by-step explanation:

trust me

Answer:

c

Step-by-step explanation:

A chi-squared statistic provides strong evidence in favor of the alternative hypothesis if its value is A.  a large positive number.

Chi-squared statistics or chi-squared test is a statistical method used to find out if there is a significant difference between the expected and observed frequencies in one or more categories of a contingency table. This test is used to determine whether the null hypothesis can be rejected or not. Chi-squared statistics are a non-parametric test that helps to determine whether the data is close to what is expected or not. This test is used when the data is ordinal or nominal.

Chisquare test is often used for: Testing if the observed frequencies of a nominal variable are significantly different from the expected frequencies Assessing if two or more distributions are the same. The chi-squared statistic provides evidence for or against the null hypothesis. A large positive value of the chi-squared statistic indicates that the null hypothesis can be rejected.

Therefore, option A. a large positive number, is the correct answer.

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Answer:

D

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

a² + 12² = 13²

a² + 144 = 169 ( subtract 144 from both sides )

a² = 25 ( take the square root of both sides )

a = \(\sqrt{25}\) = 5 → D

Answer:

intersecting

Step-by-step explanation:

We have

135₁₀ = 1×10² + 3×10¹ + 5×10⁰

but since 10 = 2×5, we can write

135₁₀ = 1×(2×5)² + 3×(2×5)¹ + 5×(2×5)⁰

135₁₀ = 4×5² + 6×5¹ + 5×5⁰

135₁₀ = 4×5² + 6×5¹ + 1×5¹

135₁₀ = 4×5² + 7×5¹

135₁₀ = 4×5² + (5 + 2)×5¹

135₁₀ = 4×5² + 5×5¹ + 2×5¹

135₁₀ = 4×5² + 1×5² + 2×5¹

135₁₀ = 5×5² + 2×5¹

135₁₀ = 1×5³ + 2×5¹

135₁₀ = 1020₅

A possibly faster method: we have 5³ = 125 < 135 < 525 = 5⁴. Now,

135 = 125 + 10 = 5³ + 2×5

which agrees with the first method, 135₁₀ = 1020₅.

Answer:

Step-by-step explanation:

Yes

Answer:

What grade are you in

Step-by-step explanation:

Answer: srry if im wrong but i think it is Answer:1.A ____ is like a recipe for a chemical substance. (valence, formula, subscript, coefficient)

Step-by-step explanation:

Answer:

the is 51

Step-by-step explanation:

24 + 32 + -5 is 51

Answer:

The Actual answer is 20

Step-by-step explanation:

24 +32-5 = 20

4−3+4=0 answer

step-by-step Because the line given in the problem is in the slope intercept form we know the slope of this line is 3.

The required equation of the line that passes through (10, 0) and is perpendicular to 3x - y = 7 is given as y = 3x - 30.

Given that,
To determine the equation of a line passing through the point (-4, -11) and perpendicular to the line 4x + 5y = -45.

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.

Here,
The slope of the given line is 3x - y = 7.
y = 3x - 7
m = 3

The equation of the perpendicular line is given as,
y - y₁ = -1/m (x - x₁)

Substitute the value in the above equation,
y - 0 = 3(x - 10)
y = 3x - 30

Thus, the required equation of the line is given as y = 3x - 30.

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Answer:

T-shirt

Step-by-step explanation:

T-shirt because she has to pay bills.

Hope this helps plz hit the crown ;D

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

sin²x + cos²x = 1 ⇒ sin²x = 1 - cos²x

cosec x = \(\frac{1}{sinx}\)

Consider the left side

\(\frac{sin0}{1-cos^20}\)

= \(\frac{sin0}{sin^20}\) ← cancel sinΘ on numerator/denominator

= \(\frac{1}{sin0}\)

= cosecΘ = right side

The function which represents the taxi fare in terms of distance d in meter is f(d) = 3.50 ×\(\frac{d-500}{300}\) + 40 .

According to the question,

For first 500 meters cost is  40.00 and For each additional 300 meters cost is 3.50 .

Let, the total distance of taxi ride = d meters

Now, representing the equation of taxi fare in terms of distance when distance is less than 500

taxi fare = 3.50 ×  \(\frac{d-500}{300}\)  + 40

∴  f(d) = 3.50 ×  \(\frac{d-500}{300}\) + 40

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Answer:

Using fractions to understand jewelry purity could save you money! COCKTAILS: Good bartenders know how to mix drinks and fractions are used to determine how much of each ingredient is added. PIZZA FOR THE KIDS: Mealtime doesn't have to be a battle about who got more. Use fractions to split the pie evenly. Percentages are used widely and in many different areas. For example, discounts in shops, bank interest rates, rates of inflation and many statistics in the media are expressed as percentages. Percentages are important for understanding the financial aspects of everyday life.Step-by-step explanation:

Hope this helps :)

The speed of current and average speed of paddling is 3 and 7 respectively.

Let p represents paddling speed of kayack guide  and c represents speed of current.

If paddling downstream, the total speed is p + c because you’re paddling with the current. Similarly, if paddling upstream, the total speed is p - c because you would be paddling against the current.

Since paddling downstream took  2 hours so distance covered 2*(p + c)

which is equal to 20 miles.

2*(p + c) =20.

p + c = 10. -----i

Paddling upstream took 4 hours so distance covered 4*(p-c).

which is equal to 16 miles.

4*(p-c) = 16.

p - c = 4.  -------ii

adding both equation c will be cancelled. 2*p=14 p =7.

put value of p in equation i.

7 + c = 10  ,c = 3.

So the speed of current and average speed of paddling is 3 and 7 respectively.

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H0: p1 ≥ p2 (Null hypothesis: Proportion of ADHD-diagnosed students in School A is equal to or greater than in School B)

Null Hypothesis: The proportion of students diagnosed with ADHD in School A is equal to or greater than the proportion of students diagnosed with ADHD in School B.

Symbolically, the null hypothesis can be stated as:

H0: p1 ≥ p2

Where:

H0: Null Hypothesis

p1: Proportion of students diagnosed with ADHD in School A

p2: Proportion of students diagnosed with ADHD in School B

In other words, the null hypothesis assumes that there is no significant difference or that School A may have an equal or higher proportion of students diagnosed with ADHD compared to School B.

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The value of the given inequality mode function |2x + 4| ≥ 5 will be x  ≥ 1/2 and x ≤ -4.5.

A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

As per the given mode function,

|2x + 4| ≥ 5

For 2x + 4 > 0 or x > -2

2x + 4  ≥ 5

2x  ≥ 1

x  ≥ 1/2

For 2x + 4 < 0 or x < -2

-(2x + 4) ≥ 5

2x + 4 ≤ -5

2x ≤ -9

x ≤ -9/2

x ≤ -4.5

Hence "The value of the given inequality mode function |2x + 4| ≥ 5 will be x  ≥ 1/2 and x ≤ -4.5".

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Answer:

Step-by-step explanation: I got 14.4 but I might be wrong and im sorry if I am

Answer:

15

Step-by-step explanation:

because the absolute value of -5 is 5 and the absolute value of 10 is 10. You add them together to get the distance in between them to get 15.

Based on the formula of the quadratic function y=-x^2+6x-5, we know that its graph is a downward-facing parabola that opens wide, with a vertex at (3,-14), and an axis of symmetry at x=3.

Based on the formula of the quadratic function y=-x^2+6x-5, we can determine several properties of its graph, including its shape, vertex, and axis of symmetry.

First, the negative coefficient of the x-squared term (-1) tells us that the graph will be a downward-facing parabola. The leading coefficient also tells us whether the parabola is narrow or wide. Since the coefficient is -1, the parabola will be wide.

Next, we can find the vertex using the formula:

Vertex = (-b/2a, f(-b/2a))

where a is the coefficient of the x-squared term, b is the coefficient of the x term, and f(x) is the quadratic function. Plugging in the values for our function, we get:

Vertex = (-b/2a, f(-b/2a))

= (-6/(2*-1), f(6/(2*-1)))

= (3, -14)

So the vertex of the parabola is at the point (3,-14).

Finally, we know that the axis of symmetry is a vertical line passing through the vertex. In this case, it is the line x=3.

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Answer:no answer figure it out on your own

Step-by-step explanation:No Answer

Answer:

784

Step-by-step explanation:

\(28*28 = 784\)

Answer:

a b c e

Step-by-step explanation:

Answer:

A, B, C, E answer on edg

Step-by-step explanation:

Answer:

a. 2/3

b. 3/2

c. 1

d. 1

Step-by-step explanation:

Answer:

Espero te sirva saludos

Answer:

GD = 5/2 sqrt 2 = 2½ sqrt 2

EG = 5/2 sqrt 6 = 2½ sqrt 6

The linear function for this problem is defined as follows:

y = x + 50.

The slope-intercept equation for a linear function is presented as follows:

y = mx + b

In which:

The graph touches the y-axis at y = 50, hence the intercept b is given as follows:

b = 50.

When x increases by 10, y also increases by 10, hence the slope m is given as follows:

m = 10/10

m = 1.

Hence the function is given as follows:

y = x + 50.

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The sum of all the angles of the polygon is 8640 and each angle is measured at 172.8

The sum of all the angles of a polygon having n sides is given by the formula (n-2)* 180

To find out the sum of all the interior angles of a polygon we need to put the value of n with the number of sides of polygon which is 50

Sum of all interior angles of the given polygon = (50-2)*180

            = 48*180

            =8640

To find out the degree of each angle of the given regular polygon is the division of the sum of interior angles of the polygon with number of sides of the polygon = 8640/50  which is 172.8

The correct question is - Calculate the sum of the interior angles of a polygon with 50 sides: (i)in degrees (ii) degree of each angle of the polygon

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The required equation represents the total interest, T, earned when the principal amount is $100, the annual simple interest rate is 1%, and the number of years is 10 is (T) = 100 × 0.1 × 10.

Simple interest is a quick and simple formula for figuring out how much interest will be charged on a loan.
interest =  Principal×rate×time

Amount = Principal [1 + rate×time]

Here,
From the given data, the total interest, T, earned when the principal amount is $100, the annual simple interest rate is 1%, and the number of years is 10.

Interset (T) = 100 × 0.1 × 10

Thus, Option B is correct.

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True. A t-test is a statistical test used to determine if there is a significant difference between the means of two groups. It is used when the sample size is small, and the population standard deviation is unknown.

In contrast, a z-score is calculated using the population mean and standard deviation and is used to compare a sample with a known population. The t-test, on the other hand, uses the sample mean and standard deviation to estimate the population parameters. Therefore, a t-test requires less information from the population than a z-score, making it a more practical choice when the population parameters are unknown or difficult to obtain.

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Here, the vector equation r(t) = (3t - 4, t^2 + 5), and t = 1, we get  r'(t) = (3, 2t) and r'(1) = (3, 2).

Step 1: To get the derivative of each component of the vector equation.
- The derivative of the first component (3t - 4) with respect to t is 3.
- The derivative of the second component (t^2 + 5) with respect to t is 2t.
Step 2: Combine the derivatives to form the vector r'(t).
r'(t) = (3, 2t)
Step 3: Evaluate r'(t) at t = 1.
r'(1) = (3, 2 * 1) = (3, 2)
So, r'(t) = (3, 2t) and r'(1) = (3, 2).

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