The amount of daily time that teenagers spend on a brand A cell phone is normally distributed with a given mean Mu = 2. 5 hr and standard deviation Sigma = 0. 6 hr. What percentage of the teenagers spend more than 3. 1 hr? 5% 10% 16% 32%.

Ratio analysis can be made more meaningful in all the following ways except by focusing more on long-term solvency than on short-term solvency.

Ratio analysis is a mathematical technique for analyzing a company's financial documents, such as the balance sheet and income statement, to gather knowledge about its liquidity, operational effectiveness, and profitability. Fundamental equity research is built on ratio analysis.

In order to get insights into profitability, liquidity, operational effectiveness, and solvency, ratio analysis examines line-item data from a company's financial statements.

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The full question:

ratio analysis can be made more meaningful in all the following ways except by?

Answer:

5/x subscript 2

Step-by-step explanation:

Answer:

114.96 pounds at angle 81.76°

Step-by-step explanation:

Let i be the component along x-axis and j be the component along y-axis.

First force that is given is 150 acting at angle 40; \(F1 = 150cos170i + 150sin40j = 114.91i +96.42j\)

The second force 100 is acting at angle 170;

\(F2 = 100cos170i + 100sin170j = -98.48i + 17.36j\)

We now have the resultant force, which is: \(114.91i + 96.42j + (-98.48i + 17.36j) = 16.43i + 113.78j\)

Magnitude of resultant:

\(\sqrt{16.43^{2} + 113.78^{2} }\) = 114.96 pounds

Angle it makes with horizontal; inverse tangent of \(\frac{(113.78)}{(16.43)}\) = 81.76 degrees

Hope this helps; Brainliest appreciated!

Answer:

The expression x⁴ + 8x³ + 34x² + 72x + 81 cannot be factored further using simple integer coefficients. It does not have any rational roots or easy factorizations. Therefore, it remains as an irreducible polynomial.

The probability of selecting a human character randomly in the game is \(\frac{1}{3}\)

The probability that a human character will be chosen when the player selects a character randomly can be calculated by dividing the number of human characters by the total number of available characters.

There are 8 animal characters and 4 human characters, making a total of 12 characters to choose from. Therefore, the probability of selecting a human character randomly is:

P(Human) = Number of human characters / Total number of characters

P(Human) = 4 / 12

Simplifying this fraction, we find:

P(Human) = 1 / 3

Therefore, the probability of selecting a human character randomly is 1/3 or approximately 0.333.

In the given scenario, there are a total of 8 animal characters and 4 human characters, making a total of 12 characters to choose from. When a player selects a character randomly, each character has an equal chance of being chosen. Since there are 4 human characters, the probability of selecting one of them is determined by dividing the number of human characters (4) by the total number of characters (12).

When we simplify the fraction 4/12, we find that it is equal to 1/3.

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a. there must be at least two pairs of these integers with the sum 11. b. The conclusion in part (a) is not true if six integers are selected instead of seven.

a) To show that if seven integers are selected from the first 10 positive integers, there must be at least two pairs of these integers with the sum 11, we can use the pigeonhole principle.

In this case, we have 10 positive integers to choose from. If we select seven integers, we can think of each integer as a pigeonhole. Since we have more pigeons (selected integers) than pigeonholes (possible sums), by the pigeonhole principle, there must be at least one pigeonhole with at least two pigeons.

Let's consider the possible pairs of integers with a sum of 11:

(1, 10), (2, 9), (3, 8), (4, 7), (5, 6)

If we select seven integers, at least two of them must belong to the same pair, and their sum will be 11. Therefore, there must be at least two pairs of these integers with the sum 11.

b) If six integers are selected rather than seven, the conclusion in part (a) may not be true. Let's consider a scenario where we select the integers 1, 2, 3, 4, 5, and 6. In this case, there are no two pairs of integers with a sum of 11. The possible sums of pairs from these integers are:

(1, 10): Not selected

(2, 9): Selected

(3, 8): Not selected

(4, 7): Selected

(5, 6): Not selected

As we can see, with only six integers selected, we can choose them in such a way that there are no two pairs with a sum of 11. Therefore, the conclusion in part (a) is not true if six integers are selected instead of seven.

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Answer:

down shift 90

Step-by-step explanation:

-90 will shift the graph down 90 units

To reduce bias when conducting an experiment, it is important to employ methods that minimize the influence of confounding factors and ensure the results are representative of the population.

Randomization plays a key role in reducing bias by eliminating systematic patterns in treatment assignment. By randomly assigning treatments, all types of members in the population have an equal chance of receiving each treatment, which helps mitigate bias. Additionally, choosing a random sample from the population enhances the generalizability of the results and reduces bias that could arise from selecting a non-representative sample.

The researcher choosing who gets which treatment can introduce bias because it allows for potential bias in treatment allocation based on preconceived notions or preferences.

Random assignment of treatments helps reduce bias by ensuring that the treatments are assigned without any systematic pattern. This allows for equal representation of all types of individuals in the population, minimizing potential confounding variables.

Assigning treatments in a way that ensures all results in the experiment are the same can lead to bias as it disregards individual differences and does not account for potential variations and interactions between treatments and participants.

Choosing a random sample from the population is important to reduce bias as it ensures that every individual in the population has an equal chance of being selected, increasing the likelihood of a representative sample. A random sample helps minimize selection bias, where certain groups are over- or under-represented, thus improving the generalizability of the findings to the larger population.

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Answer:

C

Step-by-step explanation:

7x + 3y = 30 (equation 1)

-2x + 3y = 3 (equation 2)

9x = 27 (subtract the two equations to eliminate y)

x = 3 (divide by 9)

7 * 3 + 3y = 30 (Substitute x = 3 into equation 1, it doesn't matter which equation you substitute into)

21 + 3y = 30 (7 * 3 = 21)

3y = 9 (Subtract 21)

y = 3 (divide by 3)

Answer is (3, 3)

Answer:

(3,3)

Step-by-step explanation:

7x + 3y = 30

-2x + 3y= 3

Multiply the second equation by -1 and add together to eliminate y

7x + 3y = 30

2x - 3y= -3

---------------------

9x + 0y = 27

Divide by 9

9x/9 = 27/9

x = 3

Now find y

-2x+3y = 3

-2(3) +3y =3

-6 +3y = 3

Add 6 to each side

3y = 3+6

3y=9

Divide by 3

y = 3

The regression equation of the formula regarding tuition will be given as y = 34000 - 2300x.

Regression method of writing an equation is used to show relation between two variables. The two variables include an independent variable and a dependent variable. The dependent variable is related to the independent variable and their relation and changes can be shown with the help of regression model. According to the question

the charge for tuition = $32000

Charge deduced from tuition per year = $2300

So we assume the tuition cost as y and the number of years as x.

The regression equation will be

y = 34000 - 2300x

where y is the tuition cost and x is the number of years in school and y is dependent variable and x is independent variable.

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Answer:

Step-by-step explanation:

The amount of interest is found using the simple interest formula. That is added to the principal to find the total account balance.

__

  I = Prt . . . . . P = principal, r = annual rate, t = number of years

  I = $800·0.06·3 = $144

The simple interest earned in 3 years is $144.

__

Adding that to the principal gives ...

  $800 +144 = $944

The total principal plus interest is $944.

9514 1404 393

Answer:

  C

Step-by-step explanation:

We assume you want these in order by angle measure in some consistent units. Degrees is a reasonable unit to use here.

  π radians = 180°

Substituting 180° where you see π, you find the angle values to be ...

  2π = 2(180°) = 360°

  7π/6 = 7/6(180°) = 210°

  π/4 = (1/4)(180°) = 45°

Then the angles from least to greatest are ...

  38°, 45°, 80°, 210°, 360°

or

  38°, π/4, 80°, 7π/6, 2π . . . . matches the third choice

An expression equivalent to (5x2 + 3x + 4)-(2x2 + 1)-(7x + 3) using the fewest number of possible terms is calculated to be 3x² - 4x.

We can simplify the given expression by combining like terms. By doing so, we can obtain an equivalent expression with the fewest number of possible terms. In this case, we combine the terms with the same variable and exponent and simplify the constant terms to get the simplified expression of 3x² - 4x.

(5x² + 3x + 4) - (2x² + 1) - (7x + 3)

= 5x² + 3x + 4 - 2x² - 1 - 7x - 3 (distributing the negative sign)

= (5x² - 2x²) + (3x - 7x) + (4 - 1 - 3)

= 3x² - 4x

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Answer:

58 ≤ x ≤ 126

Step-by-step explanation:

hopefully i understood that

The figures are similar by SAS (Side-Angle-Side) similarity.

Similar figures have the same corresponding angle measures and proportional side lengths.

The figure similarity criteria are:

From the given diagram, we can see that the bases of the two figures are not equal to each other but they have equal corresponding angles.

Thus, going by the criteria for similarity of figures, we can conclude that the two figures are similar by SAS since the lengths of each side of the triangle are of equal proportion.

1.8/1.8 = 6.66/6.66 = 4/4 = 8.4

So the answer will be;

Side - Angle - Side ( SAS), similarity

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The frequency of a data value is how many times the data value appears in the data set.

In this line plot, each occurrence of a data value is represented by an x above the number.

Looking at the data value 3, there are 2 x's above it, which means the data value 3 has a frequency of 2 (it occurs two times).

Therefore the correct option is A.

Answer:

1/52

Step-by-step explanation:

The probability that the card is a 4 in a pack of cards is 1 /13.

A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

Given, A card is selected from a pack of 52 cards. A favorable outcome is getting 4 since there are four 4 in a pack of cards. Thus,

When a card is selected from a pack of 52 cards the number of possible outcomes is 52 i.e., the sample space contains 52 elements

Therefore there are 52 points in the sample space.

Let E be the event in which the card drawn is an ace.

Since there are 4 aces in a pack of 52 cards n(E)=4

∴P(E)=  \(\frac{Totalnumberofpossibleoutcomes}{Numberofoutcomesfavourableto}\)

E = \(\frac{n(S)}{n(E)}\)

E = 4/52 = 1/13

​Therefore, In a deck of cards, there is a 1 in 13 chance that the card is a 4.

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​

Answer:

80 feet

Step-by-step explanation:

Given that x is the horizontal distance in feet and  f(x) is the vertical distance in feet. The minimum point of a function is its lowest point. For a quadratic equation, at its minimum or  maximum point, the slope of the graph is equal to zero.

For the table of the function given below, it can be seen that the lowest point occurs when x = 80 feet, at this point, the value of f(x) is at its lowest which is 0.

Therefore at the minimum point, it is 80 feet far from the wall .

Answer:

The answer is C!

Step-by-step explanation:

Your welcome

We can use the distributive property to find an expression equivalent to 15(x+2) as 15x + 30.

The given equation is 15(x+2).

The distributive property can be used on the component outside of the brackets, that is 15.

Therefore, we would multiply 15 by each term inside the rounded brackets.

It becomes, 15 times x = 15x and 15 times 2 = 30

That is, 15*(x+2) = 15* x +15* 2 = 15x + 30

Hence, the equation 15(x+2) becomes 15x + 30.

By using the distributive property, expression equivalent to 15(x+2) is 15x + 30

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Answer:

(f+g)(x)=2x+1+5 - x

(f+g)(x)=x + 6

(f - g)(x)= 2x + 1 - (5- x )

(f - g)(x)= 3x - 4

The better buy is given by the following brand:

Brand A.

The better buy is obtained applying the proportions in the context of the problem.

A proportion is applied as the cost per ounce is given dividing the total cost by the number of ounces.

Then the better buy is given by the option with the lowest cost per ounce.

The cost per ounce for each brand is given as follows:

$8 per ounce is a lesser cost than $9.3 per ounce, hence the better buy is given by Brand A.

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What I did was I took the $1000 and subtracted the percent off (35% equals 350)

\(1000 - 350 = 650\)

The total cost of the sale price is $650 (C)

Thank you! btw can i please get brainly :3

Answer:

650

Step-by-step explanation:

1000-350=650

The area of the parallelogram in the middle of the shape would be 6 units ²

The area of a parallelogram can be found by the formula :
= Base x Height

We can find the base of the parallelogram in the middle of the shape to be :

= Base of Parallelogram 1 - Base of Parallogram 2

= 5 - 3

= 2

The height would be:

= Height of Parallelogram 2 - Height of Parallogram 1

= 6 - 3

= 3

The area of the parallelogram is:

= 2 x 3

= 6 units ²

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Answer:

Step-by-step explanation:

Work out how much Claire earns in one hour:

After 40 hours she earns:

False. The statement you described is not an equivalent form for a conditional statement. The process you mentioned, which is reversing and negating the antecedent and consequent, is known as forming the contrapositive of the statement.

A conditional statement has the form "If P, then Q," where P is the antecedent and Q is the consequent. The contrapositive is formed by negating both the antecedent and consequent, and reversing their order: "If not Q, then not P." The contrapositive is equivalent to the original conditional statement.

However, simply reversing the antecedent and consequent without negating them gives you the converse, which is "If Q, then P." The converse is not equivalent to the original conditional statement.

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Answer:

62

Step-by-step explanation:

93÷150=0.62

×100 = 62

Hope this helps!!!!

Answer:

62

Step-by-step explanation:

Divide

93/150% = 62

(100*93) / 150

9,300/150 = 62

Answer:

The solution to the inequality is:

\(-1\le \:x\le \:3\)

The line graph of the solution is also attached.

Step-by-step explanation:

Given the expression

\(4x-1\:\le \:5x\:\le \:3\left(x+2\right)\)

solving the expression

\(4x-1\:\le \:5x\:\le \:3\left(x+2\right)\)

\(4x-1\le \:5x\quad \mathrm{and}\quad \:5x\le \:3\left(x+2\right)\)

solving

\(4x-1\le \:5x\)

Add 1 to both sides

\(4x-1+1\le \:5x+1\)

Simplify

\(4x\le \:5x+1\)

Subtract 5x from both sides

\(4x-5x\le \:5x+1-5x\)

simplify

\(-x\le \:1\)

Multiply both sides by -1 (reverse inequality)

\(\left(-x\right)\left(-1\right)\ge \:1\cdot \left(-1\right)\)

Simplify

\(x\ge \:-1\)

Similarly solving

\(5x\le \:3\left(x+2\right)\)

Subtract 3x from both sides

\(5x-3x\le \:3x+6-3x\)

Simplify

\(2x\le \:6\)

Divide both sides by 2

\(\frac{2x}{2}\le \frac{6}{2}\)

Simplify

\(x\le \:3\)

So combine the interval

\(x\ge \:-1\quad \mathrm{and}\quad \:x\le \:3\)

Merge overlapping intervals

\(-1\le \:x\le \:3\)

Therefore, the solution to the inequality is:

\(-1\le \:x\le \:3\)

The line graph of the solution is also attached.

Answer:

22,3

Step-by-step explanation:

It should be that

The line y ≤ 4x will be a solid line and shaded below the graph while the line y < -3x + 7 will be a dashed line and also shaded below the graph.

Inequalities are expressions that are not separated by an equal sign. Given the following system of equations;

y ≤ 4x

y+3x < 7

The inequalities can also be written as;

y ≤ 4x

y < -3x + 7

From the linear inequalities, the slopes of the lines are 4 and -3 respectively. The line y ≤ 4x will be a solid line and shaded below the graph while the line y < -3x + 7 will be a dashed line and also shaded below the graph.

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Answer:

B. origin

Step-by-step explanation:

It is usually right at the center of a graph, the point (0,0) It is where you start from to graph points.