How to solve this problem?

Answer:bro need more classification

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

he bought 12.5

The function can be expressed as y = f(g(x)) = (x^2 − 7x + 9)^4, where u = x^2 − 7x + 9 is the inside function and y = u^4 is the outside function.

For the given function y = (x^2 − 7x + 9)^4, the inside function is u = g(x) = x^2 − 7x + 9, and the outside function is y = f(u) = u^4.

Therefore, we have:

u = x^2 − 7x + 9

y = u^4

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Answer:

m>=-5

Step-by-step explanation:

-0.5<=m/10

m>=-0.5(10)

m>=-5

Answer:

44

Step-by-step explanation:

Answer:

19=

2:3=

Step-by-step explanation:

Im not good at explaining things

QUESTION:

What is the slope of y=7x-2

ANSWER:

\(\green{{m = 7}}\)

EXPLANATION:

The slope-intercept form is \(\blue{{y = mx + b}}\) where \(\blue{{m}}\) is the slope and \(\blue{{b}}\) is the y-intercept

\(\green{{y = mx + b}}\)

Using the slope-intercept form, the slope is \(\blue{{7}}\)

\(\green{\boxed{m = 7}}\)

hope it's helps

Answer:

All rectangles are squares is false

Step-by-step explanation:

Plss give brainliest?

Answer:

All rectangles are squares

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Yes, if the mean weight of two groups of children is different with a p-value of 0.03, the difference is statistically significant. Typically, a p-value of less than 0.05 is considered statistically significant, indicating that the observed difference is unlikely to be due to chance alone.

Yes, if the p level is .03, then the difference in mean weight between the two groups of children is statistically significant. The p level that identifies statistical significance is generally considered to be .05 or less, meaning that there is a 5% or less chance that the difference observed is due to random chance rather than a true difference between the two groups. Therefore, a p level of .03 is below the commonly accepted threshold for statistical significance and suggests that the difference in mean weight is not likely due to chance alone.

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The proportion of the variation in the values of a response y that is explained by the least-squares regression of y on x is: square of correlation coefficient.

What is square of correlation coefficient?

A helpful number in linear regression is the square of the correlation coefficient, or r2.

The percentage of the variance in one variable that can be partially explained by another variable is represented by this value.

The summary table in the Regression output contains the "R" value, which is the coefficient of correlation.

Coefficient of determination is another name for R square. To calculate R squared, multiply R by R.

The square of the correlation coefficient is what is meant by the term "coefficient of determination."

Hence, the proportion of the variation in the values of a response y that is explained by the least-squares regression of y on x is: square of correlation coefficient.

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Answer:

12 percent

Step-by-step explanation:

The tip is 24.64 - 22 = 2.64

2.64 / 22 = 0.12

False, if an augmented square matrix in row-echelon form has a row of zeros as its last row, then the corresponding system of equations has no solution.

What does the term "echelon form" mean?

What purpose does echelon matrix serve?

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Answer:

1r

Step-by-step explanation:

(5r-4)(2r-6r+4)

1(5r-4)+1(2r-6r+4)

5r-4+2r-6r+4

5r+2r-6=1r

1r-4+4

-4+4=0

1r

Break even number of coats will be 38.

Given in the question,

Linear profit function will be,

P(x) = R(x) - C(x)

And condition for the break even point → P(x) = 0

Therefore, P(x) = R(x) - C(x) = 0

By substituting the values of P(x) and R(x),

53x + 790 = 74x

74x - 53x = 790

21x = 790

x = 37.62

x ≈ 38

   Therefore, break even number of coats will be 38.

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The minimum average cost for desalinating salt water is $620 per ton. This is obtained by minimizing the cost function C(x) = 500 + 120x - 120 ln(x) and evaluating it at the critical point x = 1, which corresponds to the minimum.

To find the minimum average cost, we need to minimize the cost function C(x) and then calculate the corresponding average cost per ton. The cost function C(x) is given by C(x) = 500 + 120x - 120 ln(x), where x represents the number of tons of salt water desalinated every week, with x≥1.

To minimize the cost function C(x), we can find the critical points by taking the derivative of C(x) with respect to x and setting it equal to zero. Let's calculate the derivative:

C'(x) = 120 - (120/x)

Setting C'(x) = 0 and solving for x, we get:

120 - (120/x) = 0

120 = 120/x

x = 1

We find that x = 1 is the critical point. However, since the given condition is x ≥ 1, the minimum can occur at this point.

To confirm that the critical point corresponds to a minimum, we can analyze the second derivative. Let's calculate it:

C''(x) = 120/x^2

Since x ≥ 1, C''(x) > 0 for all x, indicating that the cost function is concave up and the critical point at x = 1 is indeed a minimum.

Now, let's calculate the minimum average cost. The average cost per ton can be obtained by dividing the total cost by the number of tons, which is given by C(x)/x. Substituting the value x = 1 into the cost function, we get:

C(1) = 500 + 120(1) - 120 ln(1)

C(1) = 500 + 120 - 0

C(1) = 620

Therefore, the minimum average cost is $620 per ton.

In summary, the minimum average cost for desalinating salt water is $620 per ton. This is obtained by minimizing the cost function C(x) = 500 + 120x - 120 ln(x) and evaluating it at the critical point x = 1, which corresponds to the minimum. The average cost per ton is calculated by dividing the total cost by the number of tons desalinated, resulting in $620 per ton.

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Answer:

The smallest value of n is 5.

Step-by-step explanation:

The expressions provided are:

\(1. \sqrt{76+n}\\\\2. \sqrt{2n+26}\)

Rational numbers are those numbers that can be expressed in ratio or fractional form, i.e. in the form of \(\frac{p}{q}\).

The provided numbers have denominators as 1.

We need to find the minimum value of n to make both the numbers a perfect square.

Consider the first number,

\(\sqrt{76+n}=\sqrt{76+5}=\sqrt{81}=9\)

The number \(\frac{9}{1}\) is a rational number.

Consider the second number,

\(\sqrt{2n+26}=\sqrt{(2\times5)+26}=\sqrt{36}=6\)

The number \(\frac{6}{1}\) is a rational number.

Thus, the smallest value of n is 5.

Jeffrey has a fish tank that holds 8 liters of water. He already has the tank filled with 1 liter of water. Thus, to fill the fish tank completely with water, Jeffrey needs 7000 milliliters of water.

This is because 1 liter is equal to 1000 milliliters. Thus, 8 liters are equal to 8 × 1000 = 8000 milliliters.

Therefore, the amount of water Jeffrey needs to completely fill the fish tank is 8000 - 1000 = 7000 milliliters of water.

Jeffrey has a fish tank of 8 liters of water that already has 1 liter of water in it.

The amount of water Jeffrey needs to completely fill the fish tank is calculated by subtracting the liters of water already present in the tank from the total liters of water the tank can hold.To completely fill the fish tank, Jeffrey needs to fill the remaining 7 liters with water. One liter of water is equivalent to 1000 milliliters. Thus, Jeffrey needs to multiply the remaining liters of water he needs to fill by 1000 milliliters.

7 × 1000 = 7000

Therefore, Jeffrey needs 7000 milliliters of water to completely fill the fish tank with water.

To completely fill the fish tank, Jeffrey needs 7000 milliliters of water because he has already filled it with 1 liter of water, and the fish tank can hold 8 liters of water.

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Answer:

never, never

Step-by-step explanation:

a *( 1/a)

Rewriting

a/a *1

1

This is not equal to -1

ab

Both a and b are negative

(-) * (-) = positive

Never,never

#1

If a is negative

a(1/a)=a/a becomes

Whuch yields 1 not -1

#2

a and b are negative

We know

So their product can't be negative

To maintain the original volume of the pond, Talisa needs to increase the radius by a factor of √(30/36), which is approximately 0.9129.

If Talisa hits rock at 30 feet, then the depth of the pond will be limited to 30 feet. Therefore, she needs to modify the radius of the pond to maintain the original volume.

To do this, Talisa can use the formula for the volume of a circular cylinder, which is:

V = πr^2h

where V is the volume of the cylinder, r is the radius, and h is the height (or depth) of the cylinder.

Since Talisa wants to maintain the original volume of the pond, she can set the equation for the new cylinder equal to the equation for the original cylinder, and solve for the new radius, r2:

πr1^2h1 = πr2^2h2

where r1 is the original radius (unknown), h1 is the original height (36 ft), r2 is the new radius (unknown), and h2 is the new height (30 ft).

Simplifying this equation, we can cancel out the π and h1 terms:

r1^2 = r2^2(30/36)

Taking the square root of both sides, we get:

r1 = r2(√(30/36))

Thus, to maintain the original volume of the pond, Talisa needs to increase the radius by a factor of √(30/36), which is approximately 0.9129. In other words, she needs to multiply the original radius by 0.9129 to get the new radius.

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Answer:

\(1609.1 m^{3}\)

Step-by-step explanation:

The area of a triangle is 1/2 base * height.

The base of one side is 13, and the height is 30.

30 * 13 = 390

390 / 2 = 195

Now, there are six of these triangle faces, so multiply that number by six.

195 * 6 = 1170

Now, just add the area of the base:

1170 + 439.1 = 1609.1

The time categories are divided into "<1 hour," "1-2 hours," "2-3 hours," and ">3 hours."  

What does the frequency distribution in the table reveal about the homework habits of the two samples of high school students?

The frequency distribution in the table provides insights into the distribution of homework habits among the two samples of high school students. By examining the frequency counts in each time category, we can determine the proportion of students spending different amounts of time on homework each night. This information helps identify patterns and differences in homework habits between the two samples, allowing for a comparison of their study behaviors.

Here is an example of a 4-column table with 2 rows representing the results of a random survey asking two samples of 100 high school students about the amount of time they spend on homework each night:

Sample 1:

  Sample 1                                                     Number of Students

    Time                                                                   Frequency

   <1 hour                                                                     20

  1-2 hours                                                                    40

 2-3 hours                                                                     30

    >3 hours                                                                   10

Sample 2:

 Sample 2                                                        Number of Students

Time                                                                      Frequency

<1 hour                                                                        30

1-2 hours                                                                    35

2-3 hours                                                                   20

>3 hours                                                                      15

In this table, each sample represents a different group of 100 high school students, and the frequency of students spending a particular amount of time on homework each night is recorded. The time categories are divided into "<1 hour," "1-2 hours," "2-3 hours," and ">3 hours." The table provides an overview of the distribution of homework time among the two samples of high school students.

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The number 90 is 25 % of the number 360

Percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%".

Percentage can be calculated by dividing the value by the total value, and then multiplying the result by 100. It is given by:

Percentage = (value / total value) * 100%

Let the number be x

90 is 25% of x

or, 25 % of x is 90

(25/100) x = 90

x = 90(100/25)

x = 360

Therefore, the number 90 is 25 % of the number 360

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ఊhe directional derivative of f at the point (1, 2, 2) in the direction of the vector v = (1/5√2)i + (1/5√2)j is 2√2.

To find the directional derivative of the function f(x, y, z) = 2z^2x + y^3 at the point (1, 2, 2) in the direction of the vector v = (1/5√2)i + (1/5√2)j, we can use the formula for the directional derivative:

D_v(f) = ∇f · v

where ∇f is the gradient of f.

Taking the partial derivatives of f with respect to each variable, we have:

∂f/∂x = 2z^2

∂f/∂y = 3y^2

∂f/∂z = 4xz

Evaluating these partial derivatives at the point (1, 2, 2), we get:

∂f/∂x = 2(2)^2 = 8

∂f/∂y = 3(2)^2 = 12

∂f/∂z = 4(1)(2) = 8

Therefore, the gradient ∇f at (1, 2, 2) is given by ∇f = 8i + 12j + 8k.

Substituting the values into the directional derivative formula, we have:

D_v(f) = ∇f · v = (8i + 12j + 8k) · (1/5√2)i + (1/5√2)j

= 8(1/5√2) + 12(1/5√2) + 8(0)

= (8/5√2) + (12/5√2)

= (8 + 12)/(5√2)

= 20/(5√2)

= 4/√2

= 4√2/2

= 2√2

Hence, the directional derivative of f at the point (1, 2, 2) in the direction of the vector v = (1/5√2)i + (1/5√2)j is 2√2.

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Answer:

Easy there ya go

Step-by-step explanation:

center: -1

radius: 3

equation of the circle: 3 X -1

The probability that a driver was wearing a seatbelt given that they were not seriously injured is approximately 0.31 or 31%.

To find the probability that a driver was wearing a seatbelt given that they were not seriously injured, we can use Bayes' theorem. Here are the steps:

Given probabilities: The probability of a driver wearing a seatbelt is P(S) = 0.78. The probability of being seriously injured given that the driver was wearing a seatbelt is P(I|S) = 0.08. The probability of being seriously injured given that the driver was not wearing a seatbelt is P(I|NS) = 0.36.

Calculate the probability of not being seriously injured: To calculate P(NI), we use the formula

\(P(NI) = (P(NI|S) * P(S)) + (P(NI|NS) * P(NS)).\)

Since \(P(NS) = 1 - P(S)\),

we have

\(P(NI) = (0.08 * 0.78) + (0.64 * 0.22)\)

= 0.2032.

Apply Bayes' theorem: Using Bayes' theorem,

\(P(S|NI) = (P(NI|S) * P(S)) / P(NI).\)

Plugging in the values, we get

\(P(S|NI) = (0.08 * 0.78) / 0.2032\)

≈ 0.3087.

Therefore, the probability that a driver was wearing a seatbelt given that they were not seriously injured is approximately 0.31 or 31%. This means that among drivers who were not seriously injured, there is a 31% chance that they were wearing a seatbelt.

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Answer:

79/40 = 1.975

162.5% = 1.625

1.975-1.625 = 0.35

Step-by-step explanation:

Answer:

Check the Picture ↓↓↓↓↓

Step-by-step explanation:

y = mx + b

slope is m

and y-intercept is b

y = 1/4x + 3

That means you go three units up on the y-axis, when x is 0

Then you create a line so that when the line rises 1 uint, it also runs 4 units.

Slope = rise/run

See how the graph starts at y=3, and as it moves up 1 unit, it goes to the right 4

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Answer:

calculate the area of the triangle first.

12×7.5= your answer

Answer:

12×7.5= your answer

Step-by-step explanation: