Divide 18 in two parts so that sum of their reciprocals is 2/5

Answer:

3,750 cars.

Step-by-step explanation:

We are given that the equation:

\(y=9000-2.4x\)

Models the relationsip between y, the number of unfilled seats in the stadium, and x, the number of cars in the parking lot.

We want to determine the number of cars in the parking lot when there are no unfilled seats in the stadium.

When there are no unfilled seats in the stadium, y = 0. Thus:

\(0=9000-2.4x\)

Solve for x. Subtract 9000 from both sides:

\(-2.4x=-9000\)

Divide both sides by -2.4:

\(x=3750\)

So, there will be 3,750 cars in the parking lot when there are no unfilled seats in the stadium.

Ozone can be both harmful and beneficial to health, depending on its location in the atmosphere and the levels at which it is present.

In the stratosphere (the layer of the atmosphere that is located about 10-50 kilometers above the Earth's surface), ozone is a beneficial gas that protects life on Earth by absorbing harmful ultraviolet (UV) radiation from the sun. However, at ground level, ozone can be harmful to health, particularly for people with respiratory problems such as asthma.

Exposure to high levels of ozone can irritate the respiratory system and cause coughing, throat irritation, and chest pain. It can also worsen bronchitis, emphysema, and other lung diseases. Ozone can also reduce lung function and inflame the linings of the lungs, leading to more serious health problems.

It is important to note that ground-level ozone is not emitted directly into the air, but is formed when pollutants from sources such as vehicle exhaust, power plants, and industrial facilities react with sunlight and heat.

Therefore, Ozone can be both harmful and beneficial to health.

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Answer:

3,264

Step-by-step explanation:

You have to use the straight line in the middle of the triangle as the height, the 12 below it as length, and the 34 on the side as width. And I must say, this prism is quite WIDE

Answer:

3264

Step-by-step explanation:

This is the answer.

Answer:

81.25% of games won

Step-by-step explanation:

Greetings! Hope this helps!

Answer

Answer choice B)

Have a good day!

_______________

A brainliest would help tons! :D

Answer:

The answer is C

Answer: See explanation

Step-by-step explanation:

x=-(2-2*the square root of 6)/5, about 0.58

or

x=-(2+2*the square root of 6)/5, about -1.38

The values of the x from equation  \(5x^2+4x-4=0\) are  x = 0.5798 and -1.38.

Given that:

Equation:  \(5x^2+4x-4=0\)

To find the values of x that satisfy the equation \(5x^2+4x-4=0\), use the quadratic formula:

\(x = \dfrac{ -b \± \sqrt{b^2 - 4ac}}{ 2a}\)

Compare the equation with \(ax^2 + bx + c = 0\).

Here, a = 5, b = 4, and c = -4.

Plugging in the values to get,

\(x = \dfrac{-4 \± \sqrt{4^2 - 4 \times 5 \times (-4)}}{2 \times 5} \\x = \dfrac{-4 \± \sqrt{16 +80}}{10} \\x = \dfrac{-4 \± \sqrt{96}}{10}\\x = \dfrac{-4 \± {4\sqrt6}}{10}\)

So the solutions for x are calculates as:

Taking positive sign,

\(x = \dfrac{-4 + {4\sqrt6}}{10}\\x = \dfrac{-4 + {9.798}}{10}\\\)

x = 5.798/10

x = 0.5798

Taking negative sign,

\(x = \dfrac{-4 - {4\sqrt6}}{10}\\x = \dfrac{-4 - {9.798}}{10}\\\)

x = -13.798/10

x = -1.38

Hence, the exact solutions for the equation  \(5x^2 + 4x - 4 = 0\)  are x = 0.5798 and -1.38.

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The researcher will Eliminate the nonsignificant independence variable and rerun the regression.  

Meaning of multiple regression analysis: Multiple regression is a statistical technique that can be used to analyze the relationship between a single dependent variable and several independent variables. The objective of multiple regression analysis is to use the independent variables whose values are known to predict the value of the single dependent value.

When modeling the relationship between a single response variable and multiple regressor variables, multiple regression analysis is used.

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Answer: u = 3

Step-by-step explanation:

Divide each side by -7 to get u = 3.

Answer:

3

Step-by-step explanation:

-7u = -21

To solve the problem we need to isolate u. Since -7 is being multiplied by u, we could divide to get rid of it.

-7u

\( \frac{ - 7u}{ - 7} = - 21 \div - 7\)

u= -21/-7

u = 3

Answer:

The first one is 1 and the second one is 1:00

Step-by-step explanation:

e set of words that refers to the clock is: midnight (exactly 12:00 am), morning (from 12:01 am to 11:59 am), noon (exactly 12:00 pm), afternoon (from 12:01 pm to 6:00 pm), evening (from 6:00 pm to 11:59 pm).

Answer:

See Below

Step-by-step explanation:

Solve by substituting

-4 = 3x + 2

-2          -2

-6 = 3x

3x/3 = -6/3

x = -2

Answer:

x = -2

Step-by-step explanation:

So we are given the function f(x) = 3x + 2 and we are asked to find the value of x that makes f(x) = -4. To do this, we can replace f(x) with -4 in the given function and solve for x.

-4 = 3x + 2

Swap sides.

3x + 2 = -4

Subtract 2 from both sides.

3x = -6

Divide both sides by 3.

x = -2

So we have found that x = -2 when f(x) = -4. This means that when x = -2, f(x) = -4.

I hope you find my answer and explanation to be helpful. Happy studying.

Both the computers will take 18 minutes to do the job together.

The slower computer sends all the company's email in 45 minutes.

The faster computer completes the same job in 30 minutes.

Let's take minutes t  to complete the task together.

As they complete one job, we get the following equation:

\(\frac{t}{45}\)+\(\frac{t}{30}\)=1

LCM of 45 and 30 is:

45 = 3 x 3 x 5

30 = 2 x 3 x 5

LCM = 2 x 3 x 3 x 5 = 90

Now, solving for t;

⇒\(\frac{2t+3t}{90} = 1\\\frac{5t}{90} =1\\5t=90\\\)

Dividing both sides by 5;

\(\frac{5t}{5}=\frac{90}{5}\)

We get t = 18

Hence, it will take both the computers 18 minutes to do the job together.

A company has two large computers. The slower computer can send all the company's emails in 45 minutes. The faster computer can complete the same job in 30 minutes. If both computers are working together, how long will it take them to do the job?

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a) The standard error of the mean is 0.90

b) The marginal error is 1.76

Given,

Number of samples in the population, n = 60

Sample mean of the population, μ = 25

Standard deviation of the population, σ = 7

We have to find the standard error of the mean and the margin of error at 95% confidence.

Here,

a) The standard error of the mean = Standard deviation / root of sample

= σ / √n

= 7/√60

= 0.90

b) The margin error;

Zₐ/₂ ×  σ / √n

= Zₐ/₂ × 7/√60

= 1.96 × 0.90

= 1.76

Therefore,

a) The standard error of the mean is 0.90

b) The marginal error is 1.76

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Answer:

2:35 pm

If an hour is 60 minutes, what we know is that 30 minutes is half. However, we must subtract 55 from 30 (In time)

To make this easier, subtract 55 by actual 30, and split 55 into 2 parts, the result of subtraction, and the other value, 30

\(55-30=25\)

Now, subtract.

\(3:30 - 30 = 3:00\)

\(3:00-25=35\)

If this is the case, the lesson must have started at 2:35 pm

Answer:

74

Step-by-step explanation:

Answer:

15%

Step-by-step explanation:

3÷20=0.15

0.15×100=15

Answer:

-1, 6

0, -3

1, -3.9

2, -3.99

f(x) = 5^2x+1

Step-by-step explanation:

for the first question, after plugging in the values of x, we get our answer to be the 2nd table

-1, 6

0, -3

1, -3.9

2, -3.99

for the second question

f(x) = 5^2x+1

after graphing, we can see it never passes x = 2

Answer:

Multiplication

Step-by-step explanation:

Answer:

Multiplication

Step-by-step explanation:

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Answer:

Step-by-step explanation:

Linear function has the form of:

Only one of the choices, B is representing the linear function:

The sampling technique used in each study is as follows: (a) convenience sampling, (b) systematic sampling, and (c) stratified random sampling.

(a) In the first study, where a journalist goes to a campground to ask people about their feelings regarding air pollution, the sampling technique used is convenience sampling. This is evident because the journalist approaches individuals who are readily available and easily accessible at the campground. However, convenience sampling may introduce bias as it does not ensure a representative sample of the population.

(b) In the second study, where every tenth machine part is selected from an assembly line for measurement, the sampling technique used is systematic sampling. Systematic sampling involves selecting every nth element from a population after establishing a sampling interval. In this case, every tenth machine part is selected to ensure a systematic and unbiased approach to quality assurance.

(c) In the third study, where attitudes about smoking are studied at a college and students are divided by class and then randomly sampled from each class for interviews, the sampling technique used is stratified random sampling. Stratified random sampling involves dividing the population into homogeneous subgroups (strata) and then randomly selecting samples from each subgroup. By dividing the students into different class strata and randomly selecting samples from each class, this study aims to ensure representation from each class in the final sample.

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I think it would be the last option

Step-by-step explanation:

:)

Answer:

Yes, every x value has only one y value

Step-by-step explanation:

You can visually see this by graphing the points and it passes the vertical line test.

Answer:

The answer is (D)

Adding the 5 and 3 then multiplying them by the numbers in the brackets in order to remove them from the brackets

In other words Simplifying the equation

1. \(9y^4 + 18y^3\) factors as \(9y^3(y + 2).\)

2. \(27x^3y + 36\) factors as \(9(3x^3y + 4).\)

To factor the given expressions step-by-step, let's tackle each one individually:

Factor: \(9y^4 + 18y^3\)

Observe that both terms have a common factor of \(9y^3.\)

\(9y^4 + 18y^3 = 9y^3(y + 2)\)

The expression \(9y^3(y + 2)\) cannot be factored any further since there are no common factors remaining.

Therefore, the factored form of \(9y^4 + 18y^3 is 9y^3(y + 2).\)

Factor: \(27x^3y + 36\)

Observe that both terms have a common factor of 9.

\(27x^3y + 36 = 9(3x^3y + 4)\)

The expression \(3x^3y + 4\) cannot be factored any further since there are no common factors remaining.

Therefore, the factored form of \(27x^3y + 36 is 9(3x^3y + 4).\)

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–3(0.15 – 0.2 + 0.25p) is equivalent to –3(-0.05 + 0.25p) and 0.15 – 0.75p

An equation is an expression used to show the relationship between two or more numbers and variables.

Given that:

–3(0.15 – 0.2 + 0.25p)

simplifying the expression:

=  –3(-0.05 + 0.25p)

Further simplification gives:

= 0.15 – 0.75p

–3(0.15 – 0.2 + 0.25p) is equivalent to –3(-0.05 + 0.25p) and 0.15 – 0.75p

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Answer:  –3(–0.05 + 0.25p)

Step-by-step explanation:

Answer:

5/4 = 5/8 times 2

1

2

4

5

7

16/5 = 8 times 2/5

9 and 8 the last two

Step-by-step explanation:

Answer:

d

Step-by-step explanation: i chose d

The slope and y-intercept of this equation include the following:

slope = -2.

y-intercept = 10.

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical expression:

y - y₁ = m(x - x₁)

Where:

By simplifying the equation and making "y" the subject of formula in slope-intercept form, we have the following:

y - 2 = -2(x - 4)

y - 2 = -2x + 8

y = -2x + 8 + 2

y = -2x + 10

In conclusion, we can logically deduce that the slope and y-intercept of this equation are -2 and 10 respectively.

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Complete Question:

Identify the slope and y-intercept of the following equation:

y−2=−2(x-4)

Answer:

the correct answer is $269

Step-by-step explanation:

Answer:

$269

Step-by-step explanation:

Answer:

P = 11/135 = 0.0815

Step-by-step explanation:

we can said that:

So, there are 124 people that use the gym, the pool or the track. This is calculated using the information above as:

14 + 18 + 21 + 22 + 14 + 16 + 19 = 124

Finally, there are 11 ( 135 - 124 = 11 ) people that don't use any facility, so the probability that a person doesn't use any facility is:

P = 11/135 = 0.0815

Answer:

0.0815

Step-by-step explanation:

Answer:

Step-by-step explanation:216