How do you calculate chi square statistic?

Answer:

Part A: x = 4.

Part B: The answer normally would be x = 12, but since your question asked why it has no real solution, it is because the solution (x=12) does not make the equaion true. Why? Because the value given from the equation that should make the equation true does not relate the equation in itself; hence making it have no solution.

The probability that all three of the selected homes have a security system is approximately 7.95%.

To find the probability that all three selected homes have a security system, we need to use the multiplication rule for independent events. Since each home is selected at random, the selection of one home does not affect the selection of the other homes.

The probability that the first home selected has a security system is 7/12.
The probability that the second home selected also has a security system is 6/11 (since there are now only 6 homes with security systems left out of the remaining 11 homes).
The probability that the third home selected also has a security system is 5/10 (since there are now only 5 homes with security systems left out of the remaining 10 homes).

Using the multiplication rule, we multiply these probabilities together to get the overall probability that all three selected homes have a security system:

P(all 3 homes have security systems) = (7/12) x (6/11) x (5/10)

P(all 3 homes have security systems) = 0.0795 or 7.95%

Therefore, the probability that all three of the selected homes have a security system is approximately 7.95%.

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Answer:

+ + + + += + + + + +

Step-by-step explanation:

DUH        

I mean I think I'm right

Answer:

1.5

Step-by-step explanation:

1.5 is the outlier because if one were to include it in the average, it would make the overall average higher than it should be.

Answer:

Discrete

Step-by-step explanation:

Discrete is the type of variable in which the number of auto accidents reported in a given month q

Discrete data is a count that uses integers and has a finite number of potential values. This sort of information can't be broken down into smaller chunks. Discrete data consists of finite, numeric, countable, and non-negative integers with discrete variables.

As we know that the number of auto accidents that can be reported in a month will be always a whole number, therefore, the number of accidents can be represented as 0, 1, 2,..., 1000, etc.

Thus, the type of variable is the number of auto accidents reported in a given month is Discrete.

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Answer:

True.

Explanation:

When solving equations with unknowns on both sides, it is generally recommended to first deal with the variable terms before dealing with the constant terms. This involves simplifying the equation by combining like terms and isolating the variable on one side of the equation. Once the variable is isolated, you can then solve for its value.\(\)

Therefore, the compound interest of the annuity due of BD 400 paid each 4 months for 6.2 years at a nominal rate of 3% per annum is BD 40,652.17.

Compound interest of an annuity due can be calculated using the formula:A = R * [(1 + i)ⁿ - 1] / i * (1 + i)

whereA = future value of the annuity dueR = regular paymenti = interest raten = number of payments First, we need to calculate the effective rate of interest per period since the nominal rate is given per annum. The effective rate of interest per period is calculated as

:(1 + i/n)^n - 1 = 3/1003/100 = (1 + i/4)^4 - 1

(1 + i/4)^4 = 1.0075i/4 = (1.0075)^(1/4) - 1i = 0.0303So,

the effective rate of interest per 4 months is 3.03%.Next, we can substitute the given values in the formula:

A = BD 400 * [(1 + 0.0303)^(6.2 * 3) - 1] / 0.0303 * (1 + 0.0303)A = BD 400 * [4.227 - 1] / 0.0303 * 1.0303A = BD 400 * 101.63A = BD 40,652.17

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Yosef finished the mile in 9 minutes.

Distance = 1 mile

Demetrius' speed = 7.5 miles per hour

Demetrius' time = Distance/speed

= 8 minutes

Demetrius finished the mile first by taking 1 minute less than Yosef's finishing time.

Answer:

Step-by-step explanation:

We know that:

Let's see how much time Yosef take in 7.5 miles.

Solution:

After working on this problem, we can conclude that Demetrius wins the race by 7.5 minutes.

The questions for grade 7 math worksheets are typically prepared by math teachers, curriculum specialists, and educational publishers.

These professionals use their knowledge of math concepts and pedagogy to create questions that are appropriate for the grade level and aligned with educational standards.

Additionally, they may use feedback from students and other teachers to refine the questions and ensure they are effective for teaching and learning. It is important for the questions to be clear, accurate, and challenging in order to help students develop their math skills and prepare for more advanced concepts.

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Therefore , the solution of the given problem of equation comes out to be the value of x is 19 and y value is 3.

The similar symbol (=) is used in arithmetic equations to signify equality between two statements. It is shown that it is possible to compare various numerical factors using mathematical techniques, which have served as manifestations of reality. For example, the equal sign divides the number 12 or even the solution y + 6 = 12 into two different halves. How many characters are on either end of the this symbol can be calculated. Conflicting symbol meanings occur frequently.

Here,

Given :

Let x be the first number and y be the second number

So,

=> xy=57

=> x=8y-5

=> (8y-5) (8y-5)

=>8y²-5y-57=0

=> (y=57)(y-3)=0

=> (y+19)(y-3)=0

=> y=3

The value of y is 3

=> x = 8*3-5

=>x= 24-5 = 19

The value of x is 19.

Therefore , the solution of the given problem of equation comes out to be the value of x is 19 and y value is 3.

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Answer:

$267.7

Step-by-step explanation:

Answer:

1) 5 2) 6 3) 1.25 or -1.75

Step-by-step explanation:

1. x^2 - 25 = 0

x^2 - 25 = 0

First, add 25 to both sides!

x^2 = 25

Now square root both sides.

x = 5

2.  (x-2)^2 = 16

First, square root both sides.

(x-2) = 4

Add 2 on both sides.

(x) = 6

x = 6

3. Quadratic Formula = -b ± \(\sqrt{b^{2}-4ac } \) / 2a

Substitute in:

-6 ±\(\sqrt{7^{2} -4(2)(6)} \) / 2(2)

-6±\(\sqrt{49 - 48} \) / 4

Both forms:

-6 + \(\sqrt{1} \) / 4

5 / 4 = 1.25

Negative:

-6 - 1 / 4

-7 / 4 = -1.75

Answer:

Step-by-step explanation:

45 buckarooss

easy collect money if there's 5 oz for $1 per ounce soybean oil would cost $5 for 5 OZ and then $4 for every ounce of canola oil 4 * 10 equals 40 so if equal $45 combined from both oil of ounces

Answer:

45$

Step-by-step explanation:

\(S=5*1\\S=5\\C=10*4\\C=40\\S+C\\5+40=45\)

S= soybean oil cost

C= canola oil cost

Kindly, check below

1) As we can see, this is a piecewise function. So, let's plot that accordingly to each interval.

2) So, we can represent that this way:

Note that the open dot does not include the endpoint. And closed dots include the endpoints.

Thus, this is the answer.

Answer: 36.7

Step-by-step explanation:

4.17 x 10 -5 =

41.7-5

=36.7

There are three ways to name an angle--by its vertex, by the three points of the angle (the middle point must be the vertex), or by a letter or number written within the opening of the angle.

You can name a specific angle by using the vertex point, and three points on each of the angle's rays or by letter or number written. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle. You can also name angles by looking at their size. Right angles are 90 degrees. Acute angles are less than 90 degrees. Obtuse angles are greater than 90 degrees, but less than 180 degrees, which is a straight angle, or a straight line.

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Answer:

20

Step-by-step explanation:

Answer: A)  4,800 m2

60.11m x 79.88= 4801.5868

Answer:

A. 4,800 m²

Step-by-step explanation:

Given :

=> width of wall is 60.11 meters.

=> height of wall is 79.88 meters.

The area of the wall is = length × breadth

=> 60.11×79.88

=> 4,801.5868m²

Approx. 4,800

4) The reason for the second step is division property of equality.

5) The reason for the second step is Multiplication property of equality.

6) The reason for the third step is because of substitution property of equality.

4) We are given that;

4x = -24

x = -6

Thus, the reason for the second step is division property of equality because both sides were divided by 4.

5) We are given;

(3x + 5)/2 = 7

Multiply both sides by 2 to get;

3x + 5 = 14

The reason is due to Multiplication property of equality.

6) We are given;

x = 4

y = 3x + 7

y = 3(4) + 7

The reason is because of substitution property of equality.

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Answer:

yes this is the answer lol

Answer:

The perimeter would be 22 meters.

Answer:

a circle with a diameter of 5 feet i got this question right

Answer: a circle with a diameter of 5 feet is correct

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Type Into Calculator:

SAT-EDIT-TYPE IN X VALUES AND Y VALUES (FROM ORDERED PAIR)-STAT-CALC-4-ENTER

\(c = \sqrt{a2 + b2} \)

6²-- 8²

18--16

2

Hence the third value 2

Step-by-step explanation:

I think this is a helpful for you

Step-by-step explanation:

making a the subject of the eqaution am=n+p we will have to divide both terms of the equation by m

\( \frac{am}{m} = \frac{n}{m} + \frac{p}{m} \\ a = \frac{n}{m} + \frac{p}{m} \)

Answer: 2n-3>=-20

Step-by-step explanation: instead of the equal sign put a line under the sign <

After translating the given statement, the inequality will be 2x - 3 ≥ -20.

Inequalities are mathematical expressions where neither side is equal. In inequality, as opposed to equations, we compare the two values.

Less than (or less than and equal to), larger than (or greater or equal to), or not similar to signs are used in place of the equal sign in between.

As per the information in the question,

The statement for the inequality in the question,

Twice, the difference between a number and 3 is at least -20.

Let the number be x.

Twice the number is 2x.

So,

2x - 3 ≥ -20

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Answer:

D

Step-by-step explanation:

Its kinda hard to explain but its the answer

The velocity required to escape the gravitational attraction of Mars is 5.03 km/s.

To calculate the velocity required to escape the gravitational attraction of Mars, we need to find the escape velocity at the given altitude. The formula for escape velocity is:

ve = sqrt((2 * G * M) / r)

where ve is the escape velocity, G is the gravitational constant (approximately 6.674 × 10^-20 km³/kg·s²), M is the mass of Mars (approximately 6.417 × 10^23 kg), and r is the distance from the center of Mars to the spacecraft.

Given that the spacecraft is at an altitude of 384 km, we first need to add this to the radius of Mars (approximately 3,390 km) to get the distance r:

r = 3,390 km + 384 km = 3,774 km

Now we can plug these values into the escape velocity formula:

ve = sqrt((2 * 6.674 × 10^-20 km³/kg·s² * 6.417 × 10^23 kg) / 3,774 km)

ve ≈ 5.03 km/s

So, the velocity required to escape the gravitational attraction of Mars at an altitude of 384 km is approximately 5.03 km/s. Keep in mind that the velocity direction and magnitude required to actually return to Earth may be different.

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Answer:

43 1 ÷12

Step-by-step explanation:

The computation of the length of the original roll of papers is shown below:

36 1 ÷3 and 6 3 ÷ 4 together

Now convert the above fractions into a number

36 1 ÷ 3 = 109 ÷3

And,

6 3 ÷4 = 27 ÷ 4

Now add these two numbers i.e.

109 ÷3  + 27 ÷ 4

= 436 + 81 ÷ 12

= 517 ÷12

= 43 1 ÷12