HELP PLEASEEEE

Suppose that y varies directly with x and that y=84
when x=7
. What is the value of x when y=108
?

Answer: 66

Step-by-step explanation:

Answer:

150 km squared

Step-by-step explanation:

5*1.5=7.5

4*5=20

7.5*20=150

Answer:

150km²

Step-by-step explanation:

1.5 x 5 = 7.5

4 x 5 = 20

20 x 7.5 = 150

The z-score of an appliance that failed after 64 months is 2.

To find the z-score:

The given parameters are:

The z-score is then computed as follows:

We have the following for an appliance that stopped working after 64 months:

So, the equation becomes:

Compare and contrast the differences:

Calculate the quotient:

Therefore, the z-score of an appliance that failed after 64 months is 2.

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The numerator and denominator is D. 3 and 116.

In fractions, the numerator and denominator are the two constituent parts. They comprise fractions, in other words. A fraction's top digit is always referred to as the numerator. It displays the quantity of our parts. A fraction's numerator—the lowest digit—is referred to as the denominator. It displays the overall number of pieces that something can be broken down into.

For an ANOVA procedure with k groups (in this case, k=4), the degrees of freedom for the numerator and denominator of the F-statistic are given by:

- Numerator degrees of freedom: k-1

- Denominator degrees of freedom: n-k, where n is the total sample size (in this case, n=4*30=120)

Therefore, for the given ANOVA procedure with four samples of 30 observations each, the numerator and denominator degrees of freedom for the critical value of F are:

- Numerator degrees of freedom: 4-1 = 3

- Denominator degrees of freedom: 120-4 = 116

So the answer is D. 3 and 116.

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at first we should find the equation of this line so we should find a in the equation of y = a x + b and we do not care about b as it is parallel so a = ( (4 -(-2)) ÷ 1 -(-2)) = 2 so y = 2 x + b and we put x = 3 and y = 7 the result is 7 = 2×3 + b and b = 7 - 6 = 1 the equation is y = 2x + 1

Your answer is 4z+10

Hope this helps

Answer:

  less than a number of g's equal to the coefficient of friction (assuming level roof and no air drag)

Step-by-step explanation:

We assume the top of the car is parallel to the ground when the car is accelerating. (We also assume that air drag does not come into play.) If k is the coefficient of static friction, the force required to move the book bag is kmg, where m is the mass of the book bag. That force will be applied if the acceleration of the car is kg.

The bag will stay in place if the car's acceleration is less than the product of the coefficient of static friction and the acceleration due to gravity.

__

Additional comment

This changes if the car is on a slope or the acceleration causes it to pitch up. At higher speeds, air pressure will introduce significant force, so probably cannot be neglected. If the coefficient of friction is about 0.2, then the acceleration needs to be less than about 4.38 miles per hour per second. (0 to 43.8 mph in 10 seconds)

result is 31+i in where 31 is real part and i is complex part as given i= √-1 and i²= -1

In mathematics complex number is an element which has two parts one is called real part and the remaining is termed as imaginary part. An example is 41+6i

here, 41 is real part, 6i is imaginary part

A real number cannot be added or subtracted with an imaginary number, but a real number can be multiplied or divided with an imaginary number.

We are given, (2+3i) (5-7i)

    at first, we expand it by removing parenthesis

2x5-2x7i+3ix5-3ix7i

10-14i+15i-21i²

now like term is added

10+i+21   as we are given i²= -1

    31+i

hence, we get 31+i

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Answer:

The expressions are alike that each expression show that that we are going a distance of 5 units from 3.

The difference is that the first expression is going a distance of 5 units left from 3 on the number line and the answer is -2.  The second expression is also a distance of 5 units from 3, but it is the distance of right 5 units from 3 which is 8.

Step-by-step explanation:

The interquartile range (IQR) is a measure of the spread or variability of the middle 50 percent of the data.

The interquartile range (IQR) is a statistical measure that describes the spread or dispersion of the middle 50 percent of the data. It is calculated as the difference between the third quartile (Q3) and the first quartile (Q1) of a dataset.

The quartiles divide a dataset into four equal parts, each representing 25 percent of the data. The first quartile (Q1) represents the lower boundary of the middle 50 percent, while the third quartile (Q3) represents the upper boundary of the middle 50 percent. The IQR captures the range of values within this middle range.

By focusing on the middle 50 percent of the data and excluding the extreme values, the interquartile range provides a measure of variability that is less affected by outliers or extreme values. It is commonly used in descriptive statistics and data analysis to understand the spread and distribution of a dataset, particularly when the data is not symmetrically distributed or contains outliers.

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A 30 inch measurement is equal to 76.2 centimeters. To convert inches to centimeters, simply multiply the number of inches by 2.54.

This conversion is important because the inch is primarily used in the United States, while the centimeter is used primarily in metric-measuring countries.

A 30 inch measurement is a commonly used unit of length in the United States, and it's important to know its equivalent in the metric system. In this article, we will explain what a 30 inch measurement is in centimeters and why it's important to understand both units.

For example, if you are traveling to a country that uses the metric system, you may need to convert your height or shoe size from inches to centimeters to ensure a proper fit.

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In correlational and experimental study designs, a key requirement for a sample is that population whom the researchers are investigation

A sample is a portion of a larger population that is selected to represent the entire group. In both correlational and experimental study designs, a key requirement for a sample is that it should be representative of the population it is meant to represent.

In a correlational study design, the goal is to examine the relationship between two or more variables. The sample must be representative of the population to ensure that the correlation calculated from the sample is representative of the correlation that exists in the population.

If the sample is not representative, the correlation calculated from the sample may be different from the correlation that exists in the population, leading to incorrect conclusions.

In an experimental study design, the goal is to test a causal relationship between two or more variables.

The sample must be representative of the population to ensure that the results of the experiment are generalizable to the population.

If the sample is not representative, the results of the experiment may not be generalizable to the population, leading to incorrect conclusions.

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Answer: Where is the triangle?

Step-by-step explanation: Brainliest pls:)

Answer: - 5/3

find the rise (-5) and the run (-3) and divide them .

Answer:

270 miles is your answer

Step-by-step explanation:

Answer:

The correct answers are:

A) 60 miles; and B) 3.375 hours.

Explanation:

We will use the equation d = rt for this.

For the first leg of the trip, the bird travels 20 miles per hour for x hours.  This gives us the equation

d = 20x

For the return trip, the bird travels 4 miles per hour slower, so 20-4 = 16 miles per hour.  He also travels 6 miles less than the return distance, for x hours:

d-6 = 16x

To isolate d, we will add 6 to each side:

d-6+6 = 16x+6

d = 16x+6

We will set the two equations equal to one another, since they both equal d:

20x = 16x+6

Subtract 16x from each side:

20x-16x = 16x+6-16x

4x = 6

Divide both sides by 4:

4x/4 = 6/4

x = 1.5

He travels for 1.5 hours both times.

The first time, 1.5 hours at 20 miles per hour is:

d = 1.5(20) = 30 miles

The original trip is 30 miles.  This makes the entire trip 30(2) = 60 miles.

On the return trip, he travels 30-6 = 24 miles at 16 miles per hour:

24 = 16x

Divide both sides by 16:

24/16 = 16x/16

1.5 = x

If he goes 24 miles in 1.5 hours at 16 miles per hour, we can use a proportion to find the time it takes for the entire return trip:

24/1.5 = 30/x

Cross multiplying,

24*x = 1.5(30)

24x = 45

24x/24 = 45/24

x = 1.875

This gives him a total time of 1.5+1.875 = 3.375 hours

Step-by-step explanation:

a. Proportions in both the left-hand and right-hand tails tend to be relatively small.

The correct answer is: a. Proportions in both the left-hand and right-hand tails tend to be relatively small. This is because a normal distribution is symmetric and bell-shaped, with the majority of the data concentrated around the mean. As a result, the tails of the distribution have fewer data points and smaller proportions compared to the center. This is because a normal distribution is symmetric and bell-shaped, with the majority of the data concentrated around the mean.

So, a. Proportions in both the left-hand and right-hand tails tend to be relatively small.

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Answer:

y= -2x+ 5

Step-by-step explanation:

plug in y=mx+b

The equation 2x + y = 5 written in the slope-intercept form is y = -2x + 5, where the slope is -2 and the intercept is 5.

An equation in the slope-intercept form is written as y = mx + c.

The given equation is 2x + y = 5.

To write the given equation in slope-intercept form, subtract both sides of the equation with 2x,

(2x + y) - 2x = 5 - 2x

2x + y - 2x = 5 - 2x

y = 5 - 2x

Rearrange the terms

y = -2x + 5

Here, -2 is the slope and 5 is the intercept.

Thus, the slope-intercept form of the equation 2x + y = 5 is y = -2x + 5.

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Answer:

30039283 d

Step-by-step explanation:

i will  help in a bit

Answer:

9.37

Step-by-step explanation:

Answer:

9.37

Step-by-step explanation:

Hey There!

To solve for the area of a triangle given 2 sides and 1 angle we use the formula

\(A=ab\frac{siny}{2}\)

where a = given side

b = other given side

and y = given angle

now we just plug in the values

\(A=7*4\frac{sin42}{2} \\7*4=28\\28\frac{sin42}{2}=9.367828489\)

Then we usually round to the nearest hundredth so the area of the triangle is

9.37

No, Is it not possible that creating a Boxplot could show outliers but z-scores show no outlier. This is because Any z-score that is either higher than +3 or lower than -3 is viewed as an issue.

When you declare a data point to be an outlier and reject it, you are indicating that even if you have already observed the point, it is unlikely to happen again.

Z scores make it easier to determine whether a data value is larger or less than the mean and how far from the mean it is. The Z score precisely indicates the number of standard deviations a data point deviates from the mean.

So, Outliers can be highlighted using scatterplots, histograms, and boxplots. Asterisks or other symbols are displayed on the graph in boxplots to plainly show the presence of outliers in a dataset.

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Answer:

A is the correct answer 450 cm

Step-by-step explanation:

area of base = 1/2 (7.5+ 5) × 6 = 37.5

volume = area × height

= 37.5 × 12

= 450cm³

Time left In an experiment of rolling a die two times, the probability of having sum at most 5 is The probability is approximately 0.3056 or 30.56%.

To calculate the probability of obtaining a sum at most 5 when rolling a die two times, we can consider all the possible outcomes and count the favorable ones.

Let's denote the outcomes of rolling the die as pairs (a, b), where 'a' represents the result of the first roll and 'b' represents the result of the second roll.

The possible outcomes for rolling a die are:

(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6),

(2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6),

(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6),

(4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6),

(5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5, 6),

(6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6, 6).

Out of these 36 possible outcomes, the favorable outcomes (pairs with a sum at most 5) are:

(1, 1), (1, 2), (1, 3),

(2, 1), (2, 2), (2, 3),

(3, 1), (3, 2), (3, 3),

(4, 1), (4, 2),

(5, 1).

There are 11 favorable outcomes out of 36 possible outcomes.

Therefore, the probability of obtaining a sum at most 5 when rolling a die two times is:

P(sum ≤ 5) = favorable outcomes / possible outcomes = 11/36 ≈ 0.3056.

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The expression that represents the phrase "one fifth the sum of 14 and a number" is **(1/5)(14 + x)**.

To break it down, the phrase "one fifth" means dividing by 5, and "the sum of 14 and a number" means adding 14 to the number. Therefore, we start with the sum of 14 and x, which is (14 + x), and then multiply it by one fifth, which is (1/5). This gives us the expression (1/5)(14 + x), representing one fifth the sum of 14 and a number.

The other expressions you provided, such as 15(14) x 1 fifth (14) plus x and 15(14 x) 1 fifth (14 plus x) 15 14 x 1 fifth plus 14 plus x 15x 14, do not accurately represent the given phrase. It's important to correctly interpret the language used in the phrase and translate it into the appropriate mathematical expression.

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The probability that student chosen at random is 16 years is 0.28.

The table shows the distribution of student by age in a high school with 1500 students. Therefore, the probability that randomly chosen student is  16 years can be found as follows:

Therefore,

probability = number of favourable outcome to age / total number of possible outcome

Hence,

probability that student chosen at random is 16 years =  420 / 150

probability that student chosen at random is 16 years = 0.28

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Answer:

A

Step-by-step explanation:

tell me if corect

Answer:

Top left

Step-by-step explanation:

(:  htam

Let:

Replace (1) into (2):

Replace the value of y into (1):