PHOTO ATTACHED PLEASE HELP!!!

Answer:

The Empirical Rule

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed(bell-shaped) random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

So the answer to this question is the Empirical Rule

The line parallel to the x-axis passing through the points (5,5) and (-5,5) has a slope of 0, indicating a horizontal line with a constant y-coordinate value of 5.

To determine the slope of the line that represents this relationship, we can use the formula for slope, which is given by:

slope = (change in y-coordinates) / (change in x-coordinates)

In this case, we are given two points on the line: (5,5) and (-5,5).

The change in y-coordinates is 5 - 5 = 0, as the y-coordinate remains constant.

The change in x-coordinates is -5 - 5 = -10.

Substituting these values into the slope formula, we get:

slope = 0 / -10 = 0

Therefore, the slope of the line that represents this relationship is 0.

A slope of 0 indicates that the line is parallel to the x-axis. This means that the line has a constant y-coordinate value for all x-coordinate values. In this case, the line passes through the point (5,5) and (-5,5), and it remains at y = 5 for all x-values.

Visually, a line with a slope of 0 would be a horizontal line on the coordinate plane. It does not have an upward or downward slope but remains parallel to the x-axis.

It's important to note that the slope of 0 indicates a relationship where the dependent variable (y) does not change with respect to the independent variable (x). In this case, no matter the value of x, the corresponding y-value remains constant at 5.

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Answer:

The upper bound of a 99% confidence interval for the percentage satisfied for all customers in the database is 88.70%.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \(\pi\), and a confidence level of \(1-\alpha\), we have the following confidence interval of proportions.

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which

z is the zscore that has a pvalue of \(1 - \frac{\alpha}{2}\).

Sample of 252 customers, 208 are satisfied:

This means that \(n = 252, \pi = \frac{208}{252} = 0.8254\)

99% confidence level

So \(\alpha = 0.01\), z is the value of Z that has a pvalue of \(1 - \frac{0.01}{2} = 0.995\), so \(Z = 2.575\).

The upper limit of this interval is:

\(\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8254 + 2.575\sqrt{\frac{0.8254*0.1746}{252}} = 0.8870\)

As a percentage:

100%*0.8870 = 88.70%

The upper bound of a 99% confidence interval for the percentage satisfied for all customers in the database is 88.70%.

Answer:

2*square root 3, -2*square root 3, 1/3, -4

Step-by-step explanation:

In the polygon, using sum of exterior angles the value of x = 37°

A polygon is a shape that has 3 or more sides.

Given the polygon which is a hexagon to find the value of x, we note that the angles are all exterior angles. We know that the sum of the exterior angles of a polygon is 360°.

So, we have the equation as

x + 2x + (x - 1) + 3x + (x + 18) + (x + 10) = 360°

Collecting like terms, we have that

x + 2x + x + 3x + x + x - 1 + 18 + 10 = 360°

9x + 27° = 360°

Subtracting 27° from both sides of the equation, we have that

9x + 27° - 27° = 360° - 27°

9x + 0 = 333°

9x = 333°

Dividing both sides by 9, we have that

x = 333°/9

x = 37°

So, the value of x = 37°

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The domain value that corresponds to a range value of 4 is,

⇒ x = 1/2

Given that;

Function is,

y = 4x + 2

Since, the equation equal to the range value:

4 = 4x + 2

Then, we can solve for "x":

4 - 2 = 4x

2 = 4x

x = 1/2

Now that we have the value of "x", we can find the corresponding value of "y" by substituting it into the given equation:

y = 4x + 2

y = 4(1/2) + 2

y = 4 + 2

y = 6

Therefore, the domain value that corresponds to a range value of 4 is,

⇒  x = 1/2

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a) There are 2 students who study both Maths and Physics in the year group of 100 students at School A.

b) School B has more pupils studying both subjects.

Part A:

To solve this problem, we can use the principle of inclusion-exclusion. This states that the total number of students who study either Maths, Physics, or both can be calculated by adding the number of students who study Maths, the number of students who study Physics, and the number of students who study both, and then subtracting the number of students who study both.

In this case, the total number of students who study either Maths, Physics, or both is:

(73 students + 58 students) - (2 students) = 131 students - 2 students = 129 students

To find the number of students who study both Maths and Physics, we can subtract the number of students who study only one subject from the total number of students who study either Maths, Physics, or both:

129 students - (73 students - 2 students) - (58 students - 2 students) = 129 students - 71 students - 56 students = 2 students

Therefore, there are 2 students who study both Maths and Physics in the year group of 100 students at School A.

Part B:

To determine which school has more pupils studying both Maths and Physics, we need to calculate the number of students at each school who study both subjects.

At School A, we know that there are 2 students who study both Maths and Physics.

At School B, we know that 24% of the students study both Maths and Physics. To find the number of students at School B who study both subjects, we can multiply the total number of students by the percentage who study both:

(150 students) * (24%) = 36 students

Since 36 is greater than 2, there are more students at School B who study both Maths and Physics. Therefore, School B has more pupils studying both subjects.

Answer:

In School B there are more pupils stydying both maths and physics

Answer:

1/2

Step-by-step explanation:

1/2 of 14 = 7

You are dividing by 2 when you multiply by 1/2

Answer:

1/2

Step-by-step explanation:

is u dumb

Answer: I know the *Answer* It is B ,D,E I got a A+ in my Quiz

Stepby-step explanation: Hope it Helps!

Answer:

Hey Mate...

Step-by-step explanation:

All that the slope-intercept form (the equation to describe linear equations) is, is an equation (y=mx+b) where m (the number that multiples x) is the slope and b (the number that is not multiplying a variable on the right-hand side of the equation) is the y-intercept.

The exponential function that models a 15% decay is: y = (0.85)^t^(1/2)

To find the base that could be written in the blank to make the exponential function model a 15% decay, we can start by understanding the nature of exponential decay.

The general formula for exponential decay is given by:

y = A(1 - r)^t

Where:

y represents the final amount or value after time t.

A is the initial amount or value.

r is the decay rate (expressed as a decimal).

t is the time.

In this case, we want to find the decay rate (r) that corresponds to a 15% decay. A 15% decay means that the final amount is 85% of the initial amount. So, we can write the equation as:

y = A(1 - 0.15)^t

Simplifying further:

y = A(0.85)^t

Comparing this equation to the given form y = (_)t^(1/2), we see that the base in the blank must be 0.85.

Therefore, the exponential function that models a 15% decay is:

y = (0.85)^t^(1/2)

This equation represents a scenario where the initial value or amount (A) is being reduced by 15% over time (t), with the exponent of 1/2 indicating that the decay occurs at a square root rate.

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This question is incomplete because it lacks the required diagram. Please find attached the diagram required to answer the question.

Answer:

14 feet

Step-by-step explanation:

The volume of a cone = 1/3 πr²h

In the above question, we are given the volume = 314 cubic feet

the height is given in the attached diagram = 6ft

Step 1

We find the radius.

From the formula for the volume of a cone, we can derive the formula for radius of the cone.

Radius of the cone = √(3 × V/π × h

π = 3.14

Radius of the cone = √( 3 × 314 /3.14 × 6

Radius of the cone = √942/3.14× 6

Radius = √50

= 7.0710678119feet

Step 2

Diameter of the cone = Radius of the cone × 2

= 7.0710678119 × 2

= 14.142135624 feet

Approximately to the nearest foot = 14 feet

Therefore, the diameter of the cone to the nearest foot = 14 feet.

Answer:

25

Step-by-step explanation:

Answer:

8.5 × 10-5

Step-by-step explanation:

moving decimal place -5 times

Let's start by using variables to represent the salaries of Saima and Atika. Let S be Saima's salary, and A be Atika's salary. Then, we can write:

We know that their total salary is Rs. 35,000, so we can write an equation:

S + 3S + 9S = 35,000

Simplifying the left side, we get:

13S = 35,000

Dividing both sides by 13, we get:

S = 2,692.31 (rounded to two decimal places)

Now that we know Saima's salary, we can find Farheen's salary:

Farheen's salary = 3S = 3 × 2,692.31 ≈ Rs. 8,076.92

Therefore, the closest answer choice is A. 10,000, which is not the exact value but is the closest option to the calculated value.

In this math problem, using the given ratios and total salary, we find Saima's salary is Rs. 5000. As Farheen's salary is three times Saima's, Farheen earns Rs.15,000.

According to the problem, Farheen's salary is three times Saima's salary, and Saima's is one-third of Atika's. Let's denote Saima's salary as 'x'. Hence, Farheen's salary is '3x' and Atika's salary is '3x'. All their salaries add up to Rs.35,000 as per the question. Therefore, the equation becomes as follows:

x + 3x + 3x = 35000. This reduces to 7x = 35000 after adding the like terms on the left hand side of the equation. Dividing each side by 7, we find 'x = 5000', which is Saima's salary.

Therefore, Farheen's salary is three times Saima's, so it equals '3 * 5000 = 15000', which matches with option C from the list. So, Farheen's salary is Rs. 15,000.

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Answer:

3.94

Step-by-step explanation:

3.944     rounded to nearest hundredth  = 3.94    becuase the thousandth digit is <5  you do not change the hundredth

Step-by-step explanation:

j. seems to be challenging

Answer:

a)M5=40º

b)M2=140º

c)M2 and M5 are supplementary angles

d)M2 and M5 are same side interior angles

e) A||B

Step-by-step explanation:

Remember that same side interior angles are the angles that are located on the same side of a straight line that cuts through two parallel lines, and these angles are supplementary, meaning that the sum of both of them will always be 180º. So by stating that M5 and M2 add up to 180º and they are on the same side of a straight line cutting through two straight lines we can prove that those two lines are parallel.

Answer:

Hey! Finally found a question of yours!

Step-by-step explanation:

1. A=9

2. A=12

3. A=21

4. A=15

5. A=7

6. A=5

7. A=20.8

8. A=48

9. A=0.25

The quadratic formula is a formula that offers the solution(s) to a quadratic equation in elementary algebra. Factoring (direct factoring, grouping, AC technique), completing the square, graphing, and other methods can be used instead of the quadratic formula to solve a quadratic problem.

Given the form of a generic quadratic equation

ax² + bx + c = 0

The quadratic formula is: whose discriminant b2 - 4ac is positive (with x representing an unknown, a, b, and c representing constants with a 0).

\( \rm{ \green{x _{1} = \frac{ - b \frac{ + }{} \sqrt{b {}^{2} - 4ac } }{2a} }}\)

The plus–minus symbol "" denotes that the quadratic equation has two solutions, which are written separately as:

\( \rm{ \green{x _{1} \frac{ - b + \sqrt{b {}^{2} - 4ac } }{2a} }} \: and \: \rm{ \green{x _{2} \frac{ - b - \sqrt{b {}^{2} - 4ac } }{2a} }}\)

Each of these two solutions is referred to as a quadratic equation root. These roots show the x-values at which any parabola, expressed explicitly as y = ax2 + bx + c, crosses the x-axis geometrically.

The quadratic formula, in addition to yielding the zeros of any parabola, can also be used to determine the parabola's axis of symmetry and the number of real zeros in the quadratic equation.

Step-by-step explanation:

b.

The sum of two opposite interior angles equals one exterior angle

111°=60°+‹G

‹G=111°-60°=51°

c.

We use the same property above

3x+4x+5=68°

7x=68-5

7x=63

x=63/7=9

‹D=4(9)+5

‹D=41°

Answer:

No

Step-by-step explanation:

Simple counterexample: \(\sqrt{2}\) which is famously irrational. As the second number let’s take \(2\sqrt{2}\) which obviously is also irrational. Their product is \(\sqrt{2}\cdot 2\sqrt{2} = 2\cdot 2 = 4\) which is a rational number.

Answer:

so the answer would be 10b