Can someone explain how to get the answer to…if 7p-4=8 what is the value of p?

The equation of tangent plane to the surfacez = 8x² - 9y² at the point (2,1,23) is 32(x - 2) - 18(y - 1) -1(z - 23) = 0

Here, the equation of the surface is

z = 8x² - 9y²

Let us assume that f(x, y, z) =  8x² - 9y² - z

The partial derivative of f(x, y, z) would be:

[tex]\frac{\partial f}{\partial x}[/tex] = 16x

[tex]\frac{\partial f}{\partial y}[/tex] = -18y

[tex]\frac{\partial f}{\partial z}[/tex] = -1

At point (2, 1, 23) the partial derivative of f(x, y, z),

[tex]\frac{\partial f}{\partial x}[/tex] = 32

[tex]\frac{\partial f}{\partial y}[/tex] = -18

[tex]\frac{\partial f}{\partial z}[/tex] = -1

So, the equation of tangent plane would be,

32(x - 2) - 18(y - 1) -1(z - 23) = 0

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1. The objective of Nour's study is to sample the population to see if there is a correlation between her performance and the audience response.

2. No, because the population she sampled isn't necessarily representative

A population sample is a subgroup of people drawn from a broader population for the purpose of a study.

A population sample is often chosen such that it is a representative of the greater population. Populaton sample should consider factors such as age, gender, income, or level of education.

The answer provided is based on the full question below;

Nour wants to go on a popular TV talent show. In order to be accepted, her audition must get at least 60% positive votes from people in the crowd.

To make sure she's not going to embarrass herself, she performed her act in front of 100 random people from her school. About 90% of the people said they would give her a positive vote. She calculated the margin of error and found it's well within the range above 60%, so she decided to go to the audition.

What is the objective of Nour's study?

Is the study appropriate for the statistical questions it's supposed to answer?

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Each pound of bananas costs $1.49 for the 10-pound package and $1.51 for the 8-pound package.

The 10 pounds of bananas is the better buy because $1.49 is the cheaper price per pound.

We have,

Part A:

To find the cost of each pound of bananas in each case,

We can use the unit rate.

- For 10 pounds of bananas at $14.90, the cost per pound is:

$14.90 ÷ 10 pounds

= $1.49 per pound

- For 8 pounds of bananas at $12.08, the cost per pound is:

$12.08 ÷ 8 pounds

= $1.51 per pound

Part B:

The better buy is the one with the lower cost per pound.

Since $1.49 is less than $1.51, the 10-pound package is the better buy.

The 10 pounds of bananas is the better buy because $1.49 is the cheaper price per pound.

Therefore,

Each pound of bananas costs $1.49 for the 10-pound package and $1.51 for the 8-pound package.

The 10 pounds of bananas is the better buy because $1.49 is the cheaper price per pound.

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There is a probability of 94/315 that the problem will be solved.

We are given that P has a chance of solving the problem of 2/7, Q has a chance of solving the problem of 4/7, and R has a chance of solving the problem of 4/9. To find the probability that the problem is solved, we need to consider all possible scenarios in which the problem can be solved.

The probability of this scenario is 2/7. If P solves the problem, then it does not matter whether Q or R solve it, the problem is already solved. Therefore, the probability of the problem being solved in this scenario is 2/7.

The probability of this scenario is 4/7. If Q solves the problem, then it does not matter whether P or R solve it, the problem is already solved. Therefore, the probability of the problem being solved in this scenario is 4/7.

The probability of this scenario is 4/9. If R solves the problem, then it does not matter whether P or Q solve it, the problem is already solved. Therefore, the probability of the problem being solved in this scenario is 4/9.

The probability of this scenario is (1-2/7) * (1-4/7) * (1-4/9) = 3/35. This is because the probability of P not solving the problem is 1-2/7, the probability of Q not solving the problem is 1-4/7, and the probability of R not solving the problem is 1-4/9. To find the probability of none of them solving the problem, we multiply these probabilities together.

To find the probability of the problem being solved, we need to add the probabilities of all the scenarios in which the problem is solved. Therefore, the probability of the problem being solved is:

2/7 + 4/7 + 4/9 = 94/315

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Answer:

x = 3

c(x) = 3x² + 5x + 22

⇒ c(3) = 3(3²) + 5(3) + 22

⇒ c(3) = 3(9) + 15 + 22

⇒ c(3) = 27 + 15 + 22

⇒ c(3) = 64

j(x) = 12x

⇒ j(3) = 12(3)

⇒ j(3) = 36

a(x) = 9x

⇒ a(3) = 9(3)

⇒ a(3) = 27

c(x) = 3x² + 5x + 22 is the function that has the largest value when x = 3.

False. Not all functions are equal at x = 3.

A function of the form y= A sin (Bx-C)+D that has period 8, phase shift -2, and the range -12 ≤y≤-4 is y = 4 sin (π/4 x + π/2) - 8

To write a function of the form y = A sin (Bx - C) + D that has a period of 8 and phase shift of -2, we can use the general formula:

y = A sin [(2π/P)(x - C)] + D

where P is the period, C is the phase shift, and D is the vertical shift. In this case, P = 8 and C = -2, so we have:

y = A sin [(2π/8)(x + 2)] + D

Simplifying the equation, we get:

y = A sin (π/4 x + π/2) + D

To find the amplitude A and vertical shift D that satisfy the range -12 ≤ y ≤ -4, we can use the fact that the sine function oscillates between -1 and 1. If we set A = 4, then the maximum value of y is 4 + D, and the minimum value of y is -4 + D. To ensure that the range is -12 ≤ y ≤ -4, we need to choose D such that:

4 + D ≤ -4 and -4 + D ≥ -12

Solving these inequalities, we get:

-8 ≤ D ≤ 0

Therefore, a function that satisfies the given conditions is:

y = 4 sin (π/4 x + π/2) - 8

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Beyond doubt, owing to the confidence interval administered, there is incontrovertible proof that the genuine percentage of male births in this community deviates from 0.5. The confidence interval excludes 0.5, with both its lower and upper bounds either larger or lesser than 0.5.

The confidence interval yields insights into the selection of conceivable proportions for the authentic percent of male births attained within the population; as opposed to a significance test exclusively revealing whether we can deny or not disavow a nonentity hypothesis.

The confidence interval details a more comprehensive reflection of the data by disseminating awareness regarding the accuracy of the evaluation and the latitude of uncertainty adjacent to it.

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The number of ways they can is 40,320.

The number of ways Larry can arrive first and Sarah can arrive last is 720.

The probability that Larry arrives first and Sarah arrives last is 0.01786.

We have,

a)

Since each person can arrive at any time, the number of ways they can arrive is equal to the number of permutations of 8 people, which is:

= 8!

= 40,320

b)

To calculate the number of ways Larry can arrive first and Sarah can arrive last, we can fix their positions and then permute the remaining 6 people in the middle.

= 1 x 6! x 1

= 720

c)

To find the probability that Larry arrives first and Sarah arrives last, we need to divide the number of ways they can arrive in the desired order (720) by the total number of ways they can arrive (40,320):

= P(Larry first and Sarah last)

= 720 / 40,320

= 0.01786

So the probability is approximately 0.01786, or about 1.8%.

Thus,

The number of ways they can is 40,320.

The number of ways Larry can arrive first and Sarah can arrive last is 720.

The probability that Larry arrives first and Sarah arrives last is 0.01786.

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The value of f (-1) by virtue of the given absolute value function graph as required is; 8.

It follows from the task content that the value of the function instance; f (-1) is required to be determined.

On this note, the value of the function instance can be determined as the point of intersection of the line; x = -1 with the given graph.

Ultimately, the value of the instance f (-1) is; 8.

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Answer:θ ≈ 2.57 radians

θ ≈ 0.58 radians

Step-by-step explanation:We can solve this quadratic equation in sin(θ) by factoring:

4sin^2(θ) + 7sin(θ) - 5 = 0

(4sin(θ) - 1)(sin(θ) + 5) = 0

Therefore, either:

4sin(θ) - 1 = 0

sin(θ) = 1/4

or:

sin(θ) + 5 = 0

sin(θ) = -5 (not possible, since sin(θ) is between -1 and 1)

So, we have sin(θ) = 1/4. Since 0 ≤ θ < 2π, we can find the two solutions in the interval [0, 2π) by using the inverse sine function:

θ = arcsin(1/4)

Using a calculator, we find:

θ ≈ 0.2531 or θ ≈ 2.8887

Therefore, in radians, the solutions for θ are approximately:

0.2531 (which is less than 2π)

2.8887 (which is greater than 2π)

So the only answer that satisfies 0 ≤ θ < 2π is:

12 baseball and 9 basketball players are there. The frequency of a value in the data is its occurrence.

One approach to display data is in a frequency table. To summarise bigger collections of data, the data are organised and counted. You can examine the distribution of the data across various values using a frequency table. The frequency of a value in the data is its occurrence. We can immediately see how frequently each value appears in a table. 12 baseball and 9 basketball players are there.

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Answer: 7

Step-by-step explanation: he spends 7 hours a day take 3 away from 10.

Answer1.35+ 4:

Step-by-step explanation:

An exponential equation of the function that models the data given is y = 12.74 (0.7)ˣ.

Given a table of values that represent an exponential function.

An exponential equation is of the form,

y = a (b)ˣ

When x = 0, y = 12.74

12.74 = a (b)⁰

12.74 = a [since b⁰ = 1]

So a = 12.74

When x = 1, y = 8.918

Substituting,

12.74 b = 8.918

b = 8.918 / 12.74

b = 0.7

Hence the equation is option D) y = 12.74 (0.7)ˣ.

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A graph represents a function if it has no vertically aligned points, that is, each value of x is mapped to only one value of y. Vertically aligned points mean that a value of x is mapped to multiple values of y, that is, a single input is mapped to multiple outputs which disqualify the relation as a function.

In this problem, any vertical line in the interval -2 < x < 6 would cross the circle at two points, meaning that two outputs are associated with a input, and thus the relation is not a function.

The domain and the range of the relation are given as follows:

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The circumference of the circle is 75.4 cm.

The circumference of the circle is calculated from the radius of the circle.

Considering the equilateral triangle, each of the interior angle is 60⁰, a line passing the center of any of this angle, divides it into two with each angle 30⁰.

Considering the right triangle inside the equilateral triangle, the hypothenuse is equal to the radius of the circle.

The radius of the circle is calculated as follows;

sin (30) = opp/hypo

sin (30) = 6 cm/r

r = 6 cm / sin (30)

r = 12 cm

The circumference of the circle is calculated as follows;

C = 2πr

C = 2π x (12 cm)

C = 75.4 cm

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The p-value is a probability value for test that measures the strength of evidence against a null hypothesis.

It is a number between 0 and 1 and is typically compared to a significance level (such as 0.05) to determine whether to reject or fail to reject the null hypothesis.

However, a p-value cannot be calculated from a single number like -0.24 alone. A p-value is typically calculated using statistical tests, such as a t-test or ANOVA, which require more information about the data, such as the sample size, mean, and standard deviation.

Therefore, to find the p-value for a specific hypothesis test, you would need to perform a statistical test on the relevant data using appropriate statistical software or formula, and the resulting p-value will be specific to that test and the data analyzed.

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Answer:

1 quarter, 2 dimes, 1 nickel, and 3 pennies can be used to make 82 cents.

Step-by-step explanation:

One possible set of 7 coins that make 82 cents is:

1 quarter (25 cents)

2 dimes (10 cents each)

1 nickel (5 cents)

3 pennies (1 cent each)

Adding up the values of these coins:

25 + 10 + 10 + 5 + 1 + 1 + 1 = 82

Therefore, a set of 1 quarter, 2 dimes, 1 nickel, and 3 pennies can be used to make 82 cents.

The area of the triangle with base of 5 ​inches and a height of 10 inches is 25 square inches. The correct answer is C.

The formula for the area of a triangle is A = 1/2 * b * h, where A is the area, b is the base, and h is the height. Using this formula, we can calculate the area of the triangle in question.

Given that the base of the triangle is 5 inches and the height is 10 inches, we can plug these values into the formula and solve for A:

A = 1/2 * b * h

A = 1/2 * 5 * 10

A = 25

Therefore, correct answer is C.

The height of a triangle is the perpendicular distance between the base and the opposite vertex. The base is the side of the triangle on which the height is measured.

By multiplying the base and the height and dividing the result by 2, we can find the area of a triangle. This formula works for all types of triangles, regardless of their size or shape.

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Complete question is:

Find the area of a triangle with base of 5 ​inches and a height of 10 inches.

A 100 square inches

B 50 square inches

C 25 square inches

D 12.5 square inches

The improper fraction 17/9 as a mixed number is A = 1 8/9

Given data ,

Let the mixed number be represented as A

Now , the improper fraction is n = 17/9

On simplifying , we get

The improper fraction 17/9 can be converted to a mixed number by dividing the numerator (17) by the denominator (9) and expressing the quotient as a whole number and a proper fraction.

So , A = 1 8/9

Hence , the mixed number is A = 1 8/9

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The value of area of the figure is,

⇒ 10√10 units²

We have to given that;

To find the area of figure.

Here, We have to find length of AD and AB for area of figure.

Coordinate of A = (- 2, 2)

Coordinate of B = (- 4, -4)

Coordinate of D = (3, 2)

Since, The distance between two points (x₁ , y₁) and (x₂, y₂) is,

⇒ d = √ (x₂ - x₁)² + (y₂ - y₁)²

Hence, Length of AD;

AD = √ (-2 - 3)² + (2 - 2)²

AD = √25

AD = 5

Length of AB;

AB = √ (- 2 + 4)² + (2 + 4)²

AB = √4 + 36

AB = √40

AB = 2√10

Thus, The value of area of the figure is,

⇒ AD x AB

⇒ 5 × 2√10

⇒ 10√10

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The value of the function ƒ(x) at each point is  ƒ(–1) = 5, ƒ(0) = 3, ƒ(1) = 5, ƒ(2) = 11, ƒ(3) = 21, the correct option is B.

We are given that;

f(-1)=5 f(0) = 3 f(1) = 5 f(2) = 11 f(3) = 21

Now,

The function ƒ(x) maps each value of x to a corresponding value of y. For example, when x = –1, y = 5, so ƒ(–1) = 5. Similarly, when x = 0, y = 3, so ƒ(0) = 3, and so on. The other options are incorrect because they either reverse the order of x and y, or they do not match the values given in the mapping.

Therefore, by the given domain and range the answer will be ƒ(–1) = 5, ƒ(0) = 3, ƒ(1) = 5, ƒ(2) = 11, ƒ(3) = 21.

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The complete question is;

Use the mapping shown above to show the value of the function ƒ(x) at each point. Question options: A) ƒ(1) = 5, ƒ(0) = 3, ƒ(1) = 5, ƒ(2) = 11, ƒ(3) = 21B) ƒ(–1) = 5, ƒ(0) = 3, ƒ(1) = 5, ƒ(2) = 11, ƒ(3) = 21C) ƒ(–1) = 5, ƒ(0) = 3, ƒ(1) = 5, ƒ(2) = 21, ƒ(3) = 11D) ƒ(5) = –1, ƒ(3) = 0, ƒ(5) = 1, ƒ(11) = 2, ƒ(21) = 3.

Answer:

The amount of Uranium-233 produced after 20 days will be approximately 65.1 pounds.

Step-by-step explanation:

The length of AB is 4.6 inches.

An arc is a part of a circle i.e. an incomplete circle. It can be either a major arc or a minor arc of a given circle.

The length of an arc can be determined by;

length of an arc = (θ/ 360)*2πr

Where r is the radius of the circle, and θ is the measure of its central angle.

In the given diagram, the arc AB is a minor arc. So that;

AB = (θ/ 360)*2πr

r = d/2

 = 22/2

r = 11 inches

AB = (24/ 360)*2*3.14*11

     = 4.6053

AB = 4.6 inches

The length of arc AB is 4.6 inches.

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The table is attached.

A journal entry is used to record financial transactions of the business operations in a company's accounting records.

The journal entries of Piper Co. is recorded below:

The table for the journal entries is attached below for a clear understanding of the narration.

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The area of the following composite figures is 78 square units.

The area of the square is computed as 36 (length x width) or 2(Length).

The area of the triangle is computed as (base x height) ÷ 2.

The areas of the composite figures are added to determine the total area.

Line AD = 6

Line DC = 6

Line AB = 20

Base of the triangle = 14 (20 - 6)

Area of triangle = (h x b) ÷ 2

= (6 x 14) ÷ 2

= 42

Area of square portion = 36 (6 x 6)

Total area = 78 square units

Thus, we can conclude that the area of the composite figures are 78 square units.

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Answer:

all real numbers

Step-by-step explanation:

if you subtract x from both sides, you get x=x. This is true for basically any number

Step-by-step explanation:

there is the general rule of logarithms :

loga(x) = logb(x)/logb(a)

for any a and b.

so,

log9(6) = ln(6)/ln(9)