Add.
7/4 + 2/3

help pls!!

Answer:

C

Step-by-step explanation:

The domain of the function is the left column of the table, {5,10,15,20,25,30,35}

Answer:

Step-by-step explanation:

b

6x - 2x = 16 + 8

4x = 24

x = 6

2

12p^7

In order to find the value of x, consider that the measure of the angle above angle of 142° is equal to the measure of the angle with expression 2(x+9).

Take into account that the sum of the angle of 142° and the angle above it is equal to 180°.

Then, you have:

142 + 2(x + 9) = 180

solve the previous equation for x, as follow:

142 + 2(x + 9) = 180 apply distribution property left side

142 + 2x + 18 = 180 simplify like terms left side

2x + 160 = 180 subtract 160 left side

2x = 180 - 160

2x = 20

x = 20/2

x = 10

Hence. the value of x is 10°

Answer:

So I am honestly not sure what THEY though when they did this.

Step-by-step explanation:

So when you look at this, we see that:

3x+3y=10

2x+3y=20

Lets just compare these two.

There is only two differences

There is 1 less x, or -1x in the bottom equation.

The number value is 10 more, or +10, in the bottom equation.

This must mean that -x=10

Or

x=-10

This is my way of doing it, their way of doing this is:

Combining the two equations 3x+3y=10 and 2x+3y=20

lets work through this their way and find our mistake.

So combining them we get:

5x-6y=30

Oh...

Well, I see their mistake, do you?

This is our equation:

5x+6y=30

Their equation:

5x=30

The difference is that they though they needed to subtract 3 y from 3y, canceling the two y variables out. When really, you need to combine the two y values.

So this is our REASONING.

Now, you cannot solve it this way further, since you have two variables.

However, using the method above, we were able to find that x=-10

Hope this helps! :)

Answer: x = -0.377

Step-by-step explanation:

We have the equation:

4^(5*x) = 3^(x - 2)

Now we can use the fact that:

Ln(A^x) = x*Ln(A)

Then we can apply Ln(.) to both sides of the equation to get:

Ln(4^(5*x)) = Ln(3^(x - 2))

(5*x)*Ln(4) = (x - 2)*Ln(3)

(5*x)*Ln(4) - x*Ln(3) = -2*Ln(3)

x*(5*Ln(4) - Ln(3)) = -2*Ln(3)

x = -2*Ln(3)/(5*Ln(4) - Ln(3)) = -0.377

Answer:

Median is 17.5. Mean is 15.5

Step-by-step explanation:

Median is the middle number when ordered from smallest to largest. In this case 17 and 18 are the middle numbers so you split them. Median is the same as the average. Add all the numbers up ( They add to 124) and divide by the total number of responses (8 responses)

Answer:

m = -2

Step-by-step explanation:

because of rise/run you can simply see the slope

All of the listed random variables - z, t, chi-square, and F - have only nonnegative values. The z-distribution and t-distribution are created by transforming data so that it has a mean of 0 and a standard deviation of 1, while the chi-square distribution and F-distribution are formed by taking the sum of squared deviations or ratio of two chi-square distributions, respectively

The z-distribution is a normal distribution with a mean of 0 and a standard deviation of 1. Since the normal distribution can take any value on the real line, including negative values, a transformation is used to create the z-distribution so that it has only nonnegative values. Specifically, the transformation subtracts the mean from the original data and divides by the standard deviation

.The t-distribution is also a continuous probability distribution with only nonnegative values. It is used to test hypotheses about the mean of a population when the sample size is small or when the population variance is unknown. Like the z-distribution, the t-distribution is created by transforming the data so that it has a mean of 0 and a standard deviation of 1. However, in the case of the t-distribution, the standard deviation is estimated from the sample data.

The chi-square distribution is a non-negative continuous probability distribution that is used in hypothesis testing for variances and in goodness-of-fit tests. It is formed by taking the sum of squared deviations from the mean of a sample and dividing by the sample variance

The F-distribution is another non-negative continuous probability distribution that is used in hypothesis testing to compare variances. It is formed by taking the ratio of two chi-square distributions, each divided by their respective degrees of freedom.

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The value of y is 0.26 and the length of the train is 45m

\(3( 2^-^y) / (16 - 1) )= 1/2\)

\(2^(^-^y^) = 5/6\)

After applying log on both sides we get

-y × log(2) = log(5/6)

Divide both sides by log 2

y = -log(5/6) / log(2)

We get the value of y

y =- 0.2630344

Speed of train = 108 km/h

= (108×1000) m / (60 × 60) s

= 30 m/s

Length of station = 120 km = 120000 m

Let's assume that the length of the train is L

L/30 + (L + 120)/30 = 7

2L/30 + 4 = 7

2L/30 = 3

L = 45

Hence, the length of train is 45 m

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Answer:

Below.

Step-by-step explanation:

One example is a square.

Another is a rectangle.

Both of these contain 4 right angles.

Answer:

Squares & Rectangles

Step-by-step explanation:

Both of these quadrilaterals have 90 degree angles (right angles), no acute angles.

Answer:

10 lbs per dollar

Step-by-step explanation:

if you divide each one by 6 then you get 10 pounds for $1

Answer:

D {36,47,60}

Step-by-step explanation:

it would have to be {37,48,60} for it to be a right triangle

hope this helps you out

Using the graph, the value of f(-3) is 2

From the question, we are to determine the value of the given function

The given function is f(-3)

To determine the value of f(-3) on the graph, we will trace from the point where x = -3 on the x-axis to the line of the function and then trace from the line to the y-axis. The value on the y-axis is the value of f(-3)

From the graph,

Tracing from the point where x = -3 to the line and then to the y-axis, we get y = 2

∴ f(-3) = 2

Hence, the value of f(-3) is 2

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The shopkeeper will make a profit of £3.47 if someone buys 3 boxes of washing powder.

To calculate the profit made by the shopkeeper when someone buys 3 boxes of washing powder, we need to determine the selling price and subtract the cost price.

The shopkeeper purchased 16 boxes of washing powder for £24.

So, the cost price of each box is £24 divided by 16, which equals £1.50 per box.

The shopkeeper sells each box for £2.97, but there is also a special offer of 2 boxes for £5.

So, if someone buys 3 boxes, they would pay for 2 boxes at the special offer price and an additional box at the regular price.

Let's break down the cost for 3 boxes:

2 boxes at the special offer price: £5

1 box at the regular price: £2.97

The total selling price for 3 boxes would be £5 + £2.97 = £7.97.

To calculate the profit, we subtract the cost price from the selling price:

Profit = Selling Price - Cost Price

Profit = £7.97 - (3 \(\times\) £1.50)

Profit = £7.97 - £4.50

Profit = £3.47.

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The probability that a randomly selected woman has a systolic blood pressure greater than 131 is approximately 0.0228. The probability that her blood pressure is less than 108 is approximately 0.0228. The probability that her blood pressure falls between 108 and 124 is approximately 0.4772.

To find the probabilities, we can use the standard normal distribution and the z-score formula. The z-score measures the number of standard deviations a particular value is away from the mean.

(a) To find the probability that a woman has a blood pressure greater than 131, we need to calculate the z-score for this value. The z-score formula is given by (x - μ) / σ, where x is the given value, μ is the mean, and σ is the standard deviation. Plugging in the values, we get (131 - 116) / 9 = 1.6667. Using a standard normal distribution table or calculator, we can find that the probability corresponding to a z-score of 1.6667 is approximately 0.9522. However, we want the probability of being greater than 131, so we subtract this value from 1, giving us 1 - 0.9522 = 0.0478, rounded to 0.0228.

(b) To find the probability that a woman has a blood pressure less than 108, we follow a similar process. The z-score is (108 - 116) / 9 = -0.8889. Using the standard normal distribution table or calculator, we find that the probability corresponding to a z-score of -0.8889 is approximately 0.3121. Therefore, the probability of having a blood pressure less than 108 is 0.3121.

(c) To find the probability of the blood pressure falling between 108 and 124, we calculate the z-scores for both values. The z-score for 108 is (-8) / 9 = -0.8889, and the z-score for 124 is (124 - 116) / 9 = 0.8889. Using the standard normal distribution table or calculator, we find the corresponding probabilities for these z-scores, which are 0.3121 and 0.8121, respectively. To find the probability of falling between these two values, we subtract the smaller probability from the larger one, giving us 0.8121 - 0.3121 = 0.5. Therefore, the probability of having a blood pressure between 108 and 124 is 0.5, or 0.4772 when rounded to four decimal places.

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In symbolizing truth-functional claims, the word "if" is used to introduce the consequent of a condition, while the phrase "only if" represents the antecedent.

Symbolizing truth-functional claims involves representing statements or propositions using logical symbols. When using the word "if" in a truth-functional claim, it typically introduces the consequent of a conditional statement. A conditional statement is a type of proposition that states that if one thing (the antecedent) is true, then another thing (the consequent) is also true. For example, the statement "If it is raining, then the ground is wet" can be symbolized as "p → q," where p represents "it is raining" and q represents "the ground is wet."

On the other hand, the phrase "only if" is used to represent the antecedent in a truth-functional claim. In a conditional statement using "only if," it states that if the consequent is true, then the antecedent must also be true. For example, the statement "The ground is wet only if it is raining" can be symbolized as "q → p," where p represents "it is raining" and q represents "the ground is wet."

In summary, when symbolizing truth-functional claims, the word "if" introduces the consequent of a condition, while the phrase "only if" represents the antecedent. These terms help express the relationships between propositions in logical statements.

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Answer:

10

Step-by-step explanation

3 x 4 = 12

8 + 12 = 20

20 / 2 = 10

Answer:

B, 10

Step-by-step explanation:

1) Multiply 3 by 4. You get 12

2) Add 8. That leaves you with 20

3) 20 divided by 2 equals 10

:) Good luck on your quiz

If we multiply the values by 3 and then add 4 the new mean are 79 and and variance are 144.

Mean = E(x) = 25 , and variance = var(x) = 16 multiply by the value by 3 and add 4

mean = 3 x 24 + 4 = 79

Variance = 3^2 x 16 = 9 x 16 = 144

=> mean = 79 , variance = 144

Variance is a statistical measure that represents the degree of dispersion or variation in a set of data. It is the average of the squared differences between each value and the mean of the data set. The variance shows how spread out the data is and how much each value deviates from the average.

A high variance indicates that the data points are spread out over a wide range, while a low variance indicates that the data points are clustered around the mean. Variance is useful in various fields, including finance, engineering, and social sciences, where it is used to analyze data, test hypotheses, and develop predictive models. Standard deviation is a more intuitive measure of variation as it is expressed in the same units as the data, while variance is expressed in squared units.

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Complete Question: -

If we have a data set with a mean of 25 and a variance of 16, what are the new mean and variance if we multiply the values by 3 and then add 4?

A. Mean - 79, variance - 144

B. Mean - 79, variance - 48

C. Mean - 87, variance - 144

D. Mean - 87. variance - 48 ОООО

Answer:

The cost per widget will never be greater than $25

Answer:

9.42 cm

Step-by-step explanation:

3.14*3=9.42

9.42*2=18.42

18.42/2=9.42

Answer: b = 2/ 81

Step-by-step explanation: From the question

11 + 2/ 9b = 23

Subtract 11 from both sides

11 - 11 + 2/ 9b = 23 -11

It becomes 2/ 9b = 12 (12 can also be written like this: 12/ 1)

Cross multiply

9b * 12 = 2 * 1

81b = 2

b = 2 / 81

Answer:

b= 54

Explanation:

11 + 2/9b = 23

2/9b = 23 -11

2/9b = 12

2 x 9b/9b = 12 x 9b

2 = 12 x 9b

12 x 9b = 2

108b = 2

b = 2/108

b = 1/54

Answer:

The equation of the ellipse is:

(x^2)/16 + (y^2)/4 = 1

Step-by-step explanation:

An ellipse is a set of points on a plane, the sum of whose distances from two fixed points (called foci) is constant. The distance between the foci of an ellipse is denoted by 2c, and the distance between the center of the ellipse and one of its vertices is denoted by a.

In this problem, the foci are located at (2,0) and (-2,0), so the distance between the foci is 2c = 4, which means that c = 2. The major vertices of the ellipse are located at (4,0) and (-4,0), so the distance between the center and one of the vertices is a = 4.

The formula for the equation of an ellipse centered at the origin is:

(x^2)/(a^2) + (y^2)/(b^2) = 1

where a is the distance from the center to a vertex, and b is the distance from the center to a co-vertex. Since the center of this ellipse is at the origin and the major axis lies on the x-axis, we know that b = a, so we can substitute a for b in the equation:

(x^2)/(a^2) + (y^2)/(a^2) = 1

To find a, we use the fact that c^2 = a^2 - b^2:

a^2 - b^2 = c^2

a^2 - a^2 = 4

b^2 = 4

b = 2

Now we can substitute a = 4 and b = 2 into the equation:

(x^2)/(16) + (y^2)/(4) = 1

This is the equation of the ellipse.

Answer:

11 x 3 = 33

28 x 11 = 308

308 + 33 = 341

\(\huge\boxed{Answer\341}

(341) is the answer

Answer:

50$ Ana was left with because 3 x50 is 150 150-200 is50.

Answer:

x+4=7 or -7

x=3 or x=-11

\((x + 4)^2=49\implies x+4=7\implies x_1=3, x_2=-11\).

Hope this helps.

Answer:140

Step-by-step explanation:

Answer:multiply the 2 to the # in the () then boom done

Step-by-step explanation:

Answer:

11,316 < 14,265

Step-by-step explanation:

< Smaller than Mount Evans

> Bigger than Mount Evans

= Same size as Mount Evans

< Less than or equal to the size of Mount Evans

> Greater than or equal to the size of Mount Evans

Answer:

Jane spend 4 hours in a day sleeping, and 28 hours in a week.

Step-by-step explanation:

In 1 day, there are 24 hours. 24 multiplied by 1/6 is 4. I know this because 24 x 1/6 = 24/1 x 1/6 = 24/6 = 4/1 = 4.

In 1 week, there are 168 hours. 1/6 multiplied by 168 is 28. I know this because 168 x 1/6 = 168/1 x 1/6 = 168/6 = 28/1 = 28

I would appreciate brainliest.

Answer:

A

Step-by-step explanation:

using the cosine ratio in the right triangle

cos? = \(\frac{adjacent}{hypotenuse}\) = \(\frac{17}{27}\) , then

? = \(cos^{-1}\) ( \(\frac{17}{27}\) ) ≈ 51° ( to the nearest degree )