HELP PLZ no guessing

Given:

The sum of 85 + w is less than or equal to 6 multiplied by y.

To find:

The inequality for the given situation.

Solution:

We know that,

The sum of 85 and w means "85+w".

Less than or equal means "≤".

6 multiplied by y means "6y".

So, the inequality for the statement "the sum of 85 + w is less than or equal to 6 multiplied by y", is:

\(85+w\leq 6y\)

Therefore, the correct option is A.

Answer:

1 unit left

Step-by-step explanation:

Here, we want to get the kind of transformation applied

From the given equations, we can see that the value 1 being added to 1 in the second equation is the difference

What this mean is that we have an issue with the x value

For x to move to x + 1, there is a translation to the tune of 1 unit in the left direction

Answer:

x = 121

Step-by-step explanation:

To find x, you can add 154 and 88 and divide the total by 2.

154 + 88 = 242

242/2 = 121

x = 121

A conclusion which can be inferred about an individual score that corresponds to a z-value of 1.0 is that: c.) it is likely to come from the healthy distribution.

A z-value is also referred to as a z-score or standard score and it can be defined as a measure of the distance between a raw score and the mean, when standard deviation units are used.

In Statistics, z-values can either be positive or negative and it can be calculated by using this formula:

\(Z=\frac{x\;-\;u}{\delta}\)

Where:

Since the individual score that corresponds to a z-value of 1.0, we can reasonably infer and logically conclude that an individual score is likely to come from the healthy distribution.

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Complete Question:

Scores of healthy adults on a neurological test form a normal distribution with mean = 100 and SD = 15. What conclusion can be inferred about an individual score that corresponds to a z value of 1.0?

a.) it falls in the general region of the population

distribution

b.) it falls in the common region of the distribution

c.) it is likely to come from the healthy distribution

d.) it is unlikely to come from the healthy distribution

The difference of any two odd integers is even. This can be answered by the concept of Real number.

Proof: Let m and n be any odd integers. By definition of odd, there are integers r and s so that m can be expressed in terms of r and n can be expressed in terms of s as follows.

m = 2r + 1
n = 2s + 1

Now, we want to find the difference between m and n, which is (m - n).

(m - n) = (2r + 1) - (2s + 1)

Using the distributive property, we get:

(m - n) = 2r + 1 - 2s - 1

Simplifying further, we have:

(m - n) = 2r - 2s

Now, we can factor out 2 from the expression:

(m - n) = 2(r - s)

Since (r - s) is an integer, the difference (m - n) is a multiple of 2, which means it is even. Therefore, the difference of any two odd integers is even.

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Answer:

Left question- B

Right- D

Step-by-step explanation:

Left- 85÷5 is 17

Right- A cube has 6 sides and so 126 ÷6= 21

Answer:

17

42

Step-by-step explanation:

1st question:  P (A) = 1/5 · 85 = 17

2nd question: P (1 or 2) = 1/6 + 1/6 = 2/6 or 1/3;   1/3 · 126 = 42

1.)  Probabilities range from 0 to 1, denoting impossibility and certainty, respectively.

2.) The sum of probabilities of all possible outcomes is equal to 1.

1.) Individual probabilities will always have values between 0 and 1. This property is known as the "probability bound." Probability is a measure of uncertainty or likelihood, and it is represented as a value between 0 and 1, inclusive.

A probability of 0 indicates impossibility or no chance of an event occurring, while a probability of 1 represents certainty or a guaranteed outcome.

Any probability value between 0 and 1 signifies varying degrees of likelihood, with values closer to 0 indicating lower chances and values closer to 1 indicating higher chances. In simple terms, probabilities cannot be negative or greater than 1.

2.) The sum of the probabilities of all individual outcomes must equal 1. This principle is known as the "probability mass" or the "law of total probability." When considering a set of mutually exclusive and exhaustive events, the sum of their individual probabilities must add up to 1.

Mutually exclusive events are events that cannot occur simultaneously, while exhaustive events are events that cover all possible outcomes. This property ensures that the total probability accounts for all possible outcomes and leaves no room for uncertainty or unaccounted possibilities.

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The values of the missing sides are;

a.  x = 35. 6 degrees

b. x = 15

c. x = 22. 7 ft

d. x = 31. 7 degrees

To determine the values, we have;

a. Using the tangent identity;

tan x = 5/7

Divide the values

tan x = 0. 7143

x = 35. 6 degrees

b. Using the Pythagorean theorem

x² = 9² + 12²

find the square

x² = 225

x = 15

c. Using the sine identity

sin 29= 11/x

cross multiply the values

x = 11/0. 4848

x = 22. 7 ft

d. sin x = 3.1/5.9

sin x = 0. 5254

x = 31. 7 degrees

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Answer:

m = -2

Step-by-step explanation:

First get all the m's on one side:

5 + 2m = 3 + m

2m - m = 3 - 5 (now simplify)

m = -2

Hope this helps!

Answer:

Trapezoid

mAB = -2/3

mBC = 8

mCD = -2/3

mAD = 14/5

Step-by-step explanation:

Slope formula can be best seen as:

m = (y2 - y1) / (x2 - x1)

Step 1 : Find the Slope of each points

mAB = -2/3

mBC = 8

mCD = -2/3

mAD = 14/5

Step 2 : Classify the Quadrilateral

Rhombus Properties | All side lengths are the same and opposide sides have same slope

Kite | Adjacent sides are the same length

Trapezoid | One set of parrallel line (same slope)

Final Answer

Based on the properties of quadrilaterals, it is a trapezoid as it has one pair of parrallel line with the same slope of -2/3.

The equivalence classes of the equivalence relations in exercise 1 are the sets of elements that are related to each other under the given equivalence relation.

For example, if the equivalence relation is "x is related to y if x and y have the same remainder when divided by 3," then the equivalence classes would be:

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Answer:

v=0

Step-by-step explanation:

I think you mean 7(2+5v)=2v+14.

14+35v=2v+14 distribute

33v=0  Subtract 2v and 14

v=0 divide by 33 on both sides

Hope this helps plz mark brainliest if correct :D

A function can be defined as a mathematical expression which is used to define and represent the relationship that exists between two or more variables.

In Mathematics, there are different types of functions and these include the following;

For the given function f(x) = 3√(x - 2), the restriction on the value under the square root symbol is that it cannot take a negative number. This ultimately implies that, all the values under the square root symbol must be greater or equal to 0.

A domain can be defined as the set of all real numbers for which a particular function is defined. Thus, the domain of this function are all real numbers and these include the following:

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A data set's attributes are enumerated through descriptive statistics. You can use inferential statistics to test a hypothesis or determine whether your data can be applied to a larger population.

Descriptive statistics concentrate on describing the features of a dataset that are readily evident (a population or sample). In contrast, inferential statistics concentrate on drawing conclusions or generalisations from a sample of data in a larger dataset.

The information from a research sample is described and condensed using descriptive statistics. We can draw conclusions about the larger population from which we drew our sample using inferential statistics.

The area of statistics known as descriptive statistics is focused on providing a description of the population being studied. A type of statistics known as inferential statistics concentrates on inferring information about the population from sample analysis and observation.

Hence we get the required answer.

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Polynomials form a system like to that of integers hence they are closed under the operations of addition and subtraction.

Exponents of polynomials are whole numbers.

Hence the resultant exponents will be whole numbers , addition is closed for whole numbers. As a result, polynomials are closed under addition.

If an operation results in the production of another polynomial, the resulting polynomials will be closed.

The outcome of subtracting two polynomials is a polynomial. They are also closed under subtraction as a result.

The word polynomial is a Greek word. We can refer to a polynomial as having many terms because poly means many and nominal means terms. This article will teach us about polynomial expressions, polynomial types, polynomial degrees, and polynomial properties.

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Answer:

D

Step-by-step explanation:

i checked with a protracter im not sure if its correct but i have a felling its correct

In this context, the set of all scores on the standardized test across the country is referred to as the population.

In statistics, a population refers to the entire group of individuals, objects, or events that we are interested in studying. It represents the complete collection of units from which we want to draw conclusions or make inferences. In this case, the population consists of all students who have taken the standardized test across the country.

A parameter, on the other hand, is a numerical characteristic of a population. It describes a specific aspect or feature of the population, such as the mean, standard deviation, or proportion. Parameters are typically unknown and are estimated based on sample data.

In contrast, a sample refers to a subset of individuals or observations taken from the population. Samples are used to make inferences about the population. In this scenario, the researchers collected data from two classrooms of students (Classroom A and Classroom B), which can be considered as two separate samples from the population.

A statistic is a numerical measure calculated from sample data. It provides information about the sample itself but is not representative of the entire population. Examples of statistics include sample means, sample standard deviations, or sample proportions.

Based on the given information, the set of scores from Classroom A and Classroom B are samples, as they represent a subset of students who completed the test. The population, in this case, refers to the entire group of students who have taken the standardized test across the country. Therefore, the correct answer is d. the population.

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Answer:

assosiative property

Answer:

47,61 inches

Step-by-step explanation:

I used 23 inches as the width and length since this pyramid's base is a hexagon with all equal sides. Hope this helps =)

a. the probability that a student in this class passes the course is approximately 1 - 0.0301 = 0.9699 (or 96.99%). b. the probability that a student in this class receives exactly 3.3 Grade Points on the Queen's University GPA Scale is approximately 0.9992 (or 99.92%). c. the percentage score required to be in the top 10% of students is approximately 75.24%. d. the student's z-score in statistics (1.875) is higher than their z-score in microeconomics (1.818).

a. To find the probability that a student in the class passes the course (assuming a passing grade is 50%), we need to calculate the area under the normal distribution curve for scores greater than or equal to 50%.

Using Table A or a standard normal distribution calculator, we can find the z-score corresponding to a score of 50% in a normal distribution with a mean of 65% and a standard deviation of 8%.

The z-score can be calculated as:

z = (x - mean) / standard deviation

z = (50 - 65) / 8

z = -1.875

From Table A, the corresponding area (probability) for a z-score of -1.875 is approximately 0.0301.

Therefore, the probability that a student in this class passes the course is approximately 1 - 0.0301 = 0.9699 (or 96.99%).

b. To find the probability that a student in this class receives exactly 3.3 Grade Points on the Queen's University GPA Scale, we need to find the corresponding z-score for 3.3.

Since the Queen's University GPA Scale is not explicitly mentioned in the question, we will assume a standard normal distribution with a mean of 0 and a standard deviation of 1.

Using Table A, the area (probability) for a z-score of 3.3 is approximately 0.9992.

Therefore, the probability that a student in this class receives exactly 3.3 Grade Points on the Queen's University GPA Scale is approximately 0.9992 (or 99.92%).

c. To find the percentage score required to be in the top 10% of students, we need to find the z-score corresponding to the area under the normal distribution curve that leaves a probability of 10% in the upper tail.

Using Table A, the z-score corresponding to the top 10% (or 90th percentile) is approximately 1.28.

Now, we can calculate the percentage score using the z-score:

z = (x - mean) / standard deviation

1.28 = (x - 65) / 8

Solving for x, we get:

x - 65 = 1.28 * 8

x - 65 = 10.24

x = 75.24

Therefore, the percentage score required to be in the top 10% of students is approximately 75.24%.

d. To compare the student's performance in the statistics and microeconomics classes, we can use z-scores to standardize the scores relative to their respective class distributions.

For statistics:

z_stats = (x_stats - mean_stats) / standard_deviation_stats

z_stats = (80 - 65) / 8

z_stats = 1.875

For microeconomics:

z_micro = (x_micro - mean_micro) / standard_deviation_micro

z_micro = (80 - 60) / 11

z_micro = 1.818

Comparing the z-scores, we see that the student's z-score in statistics (1.875) is higher than their z-score in microeconomics (1.818).

Since z-scores represent the number of standard deviations above or below the mean, a higher z-score indicates better performance relative to the class. Therefore, the student has performed better in statistics relative to their peers compared to their performance in microeconomics.

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Answer:

Step-by-step explanation:

17

The equation are: x = -1 radians (-57.3°) and x = 11 radians (626.9°).

To solve this equation, use the identity sin2x + cos2x = 1 and apply it to the left side of the equation.

2 sin2x + 20 cos x = 6

2 (1 - cos2x) + 20 cos x = 6

2 - 2 cos2x + 20 cos x = 6

2 cos2x - 20 cos x + 2 = 6

cos2x - 10 cos x + 1 = 0

Next, solve the resulting quadratic equation using the quadratic formula: x = [-b ± √(b2 - 4ac)]/2a. In this case:

x = [-(-10) ± √((-10)2 - 4(1)(1))]/2(1)

x = [10 ± √(100 - 4)]/2

x = [10 ± √(96)]/2

x = (10 ± 4√6)/2

x = (10 ± 12)/2

x = 5 ± 6

We then use the interval [0,2π) to calculate the exact radian values for x. The two solutions in this interval are:

x = 5 - 6 = -1

x = 5 + 6 = 11

For reference, the angle corresponding to -1 radians is -57.3° and the angle corresponding to 11 radians is 626.9°.
To check the solution, graph the two sides of the equation on Desmos, with the interval [0,2π). The graph will show the two points of intersection (marked with circles) which correspond to the two solutions.

In conclusion, the exact values of x which satisfy the equation are: x = -1 radians (-57.3°) and x = 11 radians (626.9°).

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Answer:

sas ofc

side angle side

Step-by-step explanation:

Answer: 0.6 pounds

Step-by-step explanation: 3 divided by 5 = 0.6 pounds

You will be able to pull out $30,956.52 each month if you want to make withdrawals for 25 years with $300,000 saved for retirement and 10% interest.

To find out how much you will be able to pull out each month if you want to make withdrawals for 25 years with $300,000 saved for retirement and 10% interest, we can use the formula:

Monthly withdrawal = (Starting balance * Interest rate) / (1 - (1 + Interest rate)^(-Number of withdrawals))

In this case, the starting balance is $300,000, the interest rate is 10% or 0.10, and the number of withdrawals is 25 years * 12 months = 300 withdrawals.

Plugging in the numbers, we get:

Monthly withdrawal = ($300,000 * 0.10) / (1 - (1 + 0.10)^(-300))

Monthly withdrawal = $30,000 / (1 - 0.031)

Monthly withdrawal = $30,000 / 0.969

Monthly withdrawal = $30,956.52

Therefore, you will be able to pull out $30,956.52 each month if you want to make withdrawals for 25 years with $300,000 saved for retirement and 10% interest.

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The mean and the standard error of the distribution of sample means are 170 and 1.876 respectively.

As per the given data random samples of size 49 are taken from a population that has 400 elements.

N = 400

n = 49

The mean of the data is 170.

\($ \mu_{\bar{x}}=\mu=170 \\\)

The variance of the data is 196

If the sample size is more than 5 %. of the entire population, a finite population correlation factor (fpc) is multiplied with standard error,

Finite population correlation factor = \($\sqrt{\frac{N-n}{N-1}} \\\)

Finite population correlation factor = \($\sqrt{\frac{400-49}{400-1}} \\\)

Finite population correlation factor (fpc) = \($\sqrt{\frac{351}{399}} \\\)

Finite population correlation factor (fpc) = \(\sqrt{0.8797} \\\)

Finite population correlation factor (fpc) = 0.937923

Finite population correlation factor(fpc) \($& \simeq\) 0.938

The standard error of the mean,\($\sigma_\bar{x}$\)  \($=\frac{\sqrt{196}}{\sqrt{49}} \times \mathrm{fpc}$\)

\($\sigma_\bar{x}$\)   \($& =\frac{14}{7}(0.938) \\\)

\($\sigma_\bar{x}$\)  = 1.876

Therefore the mean and the standard error of the distribution of sample means are 170 and 1.876.

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Answer:

yeah what you need help with

The statement that correctly describes how the confidence interval for the population proportion of people that plan on voting in the next election is "There are not 15 successes and 15 failures. A confidence interval cannot be done."

A confidence interval (CI) is a measure of the degree of uncertainty associated with a sample estimate of a population parameter, often used to describe the reliability of survey results. Confidence intervals, as opposed to point estimates, quantify the level of uncertainty about a population parameter of interest. The confidence interval is a range of possible values for the population parameter of interest, and it is accompanied by a probability or a level of confidence.

Since the survey was conducted on 45 randomly selected individuals, therefore, the sample size is 45.

The number of people who plan to vote is 35. This implies that number of successes is 35.

So, the number of people who do not plan to vote is (45-35)=10. This implies that number of failures is 10.

Here, the number of successes is 35>15 and the number of failures is 10<15.

Hence, the correct option is:

There are not 15 successes and 15 failures. A confidence interval cannot be done.

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