HELPPPPPPPPPPPPPPPPPPPPPPPPP MEEEEEEEEEEE NO ONE IS HELPING
Consider the function f(x) = 2x2 +4x – 6.
Over what interval is f(x) negative? Justify your answer.

*ILL GIVE BRAINIEST,FIVE STARS,THANKS*

Answer:

b = 4

Step-by-step explanation:

5b + 1 = 21

5b = 20

b = 4

Answer:

b= 4

Step-by-step explanation:

On order to get the answer of b first you need to 'undo' the equation.

1.First start by multiply both sides of the equation by 3. (you need to do this to cancel out the denominator of 3)

Now the equation should read 5b+1= 21.

2. Subtract 1 from each side of the equation. You need to get b and its coefficient alone on one side of the equation. The equation should now read 5b= 20

3. Divide both sides by 5. You now need to get b alone so you can figure out its value, you do this be getting rid of the coefficient.

4. You are left with b=4

5. Check your answer. 4x5=20   20+1= 21  21/3=7

Hope this helps <3

a. The decimal is terminating and the rational number is 0.

b. The decimal is terminating and the rational number is 0.

c. The decimal is repeating and the rational number is 0.161616...

d. The decimal is terminating and the rational number is 0.

To write a rational number as a decimal, you need to divide the numerator by the denominator. Let's go through each option to determine which decimal is repeating or terminating.

a. 0: This decimal is terminating because there are no numbers after the decimal point. The rational number is 0.

b. 0: This decimal is also terminating because there are no numbers after the decimal point. The rational number is 0.

c. 0.16 overbar: This decimal has a line over the 16, indicating that it is repeating. The rational number is 0.161616...

d. 0: This decimal is terminating because there are no numbers after the decimal point. The rational number is 0.

So, to summarize:

a. The decimal is terminating and the rational number is 0.

b. The decimal is terminating and the rational number is 0.

c. The decimal is repeating and the rational number is 0.161616...

d. The decimal is terminating and the rational number is 0.

.

To know more about rational number refer here:

https://brainly.com/question/24398433

#SPJ11

Answer:

We can call last years amount as 100 percent. that means 68-100. We want to know was 85 is so we can say 85-x. We have 68-100  

                                                                             85-x

Cross multiplying and solving for x we get 8500/68 =x  x=125, so the answer is 125.

Answer:

MTVR

Step-by-step explanation:

Because if you are rotating on a ninety degree angle you will most likely end up on the point

Answer:

21

Step-by-step explanation:

you just have to use the corresponding sides that are already shown and see what is the ratio and apply it to the missing side

Pls mark brainliest tysm

Answer: i think it is C

Step-by-step explanation: brainiest please?

Answer:

1/2(28) = 16

Step-by-step explanation:

You have to have half of which is 14 then plus 2 equals 16

Answer:

32

Step-by-step explanation:

1/2x32=16

Answer:

the slope will be 5/6 and the y- intercept is going to be (0,-5)

Step-by-step explanation:

use the slope-intercept form y=mx+b to find the slope (M) and the y-intercept (b)

Median should be used to determine which location typically has the cooler temperature, considering the data provided.

When comparing the data, the measure of center that should be used to determine which location typically has the cooler temperature is the median, because Desert Landing is skewed.

Skewness refers to the asymmetry of a distribution. In the case of Desert Landing, the graph is titled "Temps in Desert Landing," and it is described that the shaded bar stops at 2 above the interval 60 to 69, which means the frequency of temperatures in that range is lower compared to the other intervals. Similarly, the shaded bar stops at 4 above the interval 70 to 79, indicating a higher frequency of temperatures in that range. This suggests a skewed distribution where the data is not evenly distributed around the center.

In a skewed distribution, the mean can be influenced by extreme values, while the median is a more robust measure of center. The median represents the middle value when the data is ordered from lowest to highest. Since Desert Landing has a skewed distribution, the median would be more appropriate to determine which location typically has the cooler temperature.

For more such questions on Median

https://brainly.com/question/16408033

#SPJ8

To ensure the best test results, Anita should be provided with the following information before her spirometry:

1. Instructions for taking the test: Anita should be thoroughly explained about how the spirometry test works and what steps she needs to follow. This includes taking a deep breath and blowing as hard as she can into the spirometer mouthpiece. It is important to emphasize that she needs to repeat this procedure a few times and take deep breaths between each exhale.

2. Emphasize the importance of taking medication as prescribed: Anita should be reminded of the importance of taking her medications as prescribed, including on the day of the test. It is crucial for her to bring her medications to the test appointment.

3. Avoid certain foods and drinks: Anita should be informed to avoid consuming certain substances before the spirometry test, such as caffeine, alcohol, and heavy meals. These can potentially affect the accuracy of the test results.

4. Arrive early for the test: Anita should be advised to arrive early for the test to allow herself sufficient time to relax and calm down before the procedure. This can help ensure more accurate results.

The rationale behind providing these instructions and information is that spirometry is a lung function test that measures the amount and speed of air being breathed in and out. By following the instructions and guidelines, Anita can achieve optimal results, aiding in the diagnosis and assessment of lung conditions.

Learn more about spirometry and its significance in assessing lung function:

https://brainly.com/question/18155241

#SPJ11

The mean height for both groups put together is 161.75 cm

To find the mean height for both groups put together, we need to calculate the overall mean of all the heights. We can do this by finding the total height of all the men and women and then dividing the total number of people in the sample.

For the men, the mean height was 178 cm. There were 18 men in the sample, so the total height of all the men would be 178 cm x 18 = 3,204 cm.

For the women, the mean height was 152 cm. There were 30 women in the sample, so the total height of all the women would be 152 cm x 30 = 4,560 cm.

To find the total height of all the people in the sample, we can add the total height of the men and the total height of the women: 3,204 cm + 4,560 cm = 7,764 cm.

To find the mean height for both groups put together, we need to divide the total height by the total number of people in the sample. In this case, there were 18 men + 30 women = 48 people in the sample. So, the mean height for both groups put together would be 7,764 cm ÷ 48 = 161.75 cm.

Therefore, the mean height for both groups together is 161.75 cm.

It's important to note that this calculation assumes that the samples are representative of the larger population and that the samples were selected randomly. Additionally, the sample size is relatively small, so the results may not be entirely accurate or representative. However, the calculation gives us a rough estimate of the mean height for both groups put together.

Know more about Mean here:

https://brainly.com/question/1136789

#SPJ11

Answer:

77

Step-by-step explanation:

Answer:

ED = 6.5 cm

BE = 14.4 cm

Step-by-step explanation

AB/BC = AE/ED is less than or eqauls ED = BC×AE/AB

so

ED = 5×26/20 = 130/20 = 6.5 cm

and

AB/AC = BE/CD => BE = AB×CD/AC

so

BE = 20×18/25 = 360/25 = 14.4 cm

An explanation of an event that is based on repeated observations and experiments is a scientific theory

A thorough, well-researched explanation of a natural occurrence constitutes a scientific theory.

We frequently use the word "theory" to refer to a hypothesis or informed guess in common speech, but in science, a theory is an explanation that is the result of a substantial and repeated investigation. The purpose of theories is to explain a broad concept; they are not intended to establish facts

Some of the most well-known and complicated events are explained by scientific theories. The theories of relativity, evolution, and gravity are a handful of the most well-known scientific concepts.

Know more about scientific theory at:

https://brainly.com/question/22992470

#SPJ4

Answer: \(y=3(4)^x\)

Step-by-step explanation:

Substituting the coordinates of the points into the equation,

\(12=ab\\\\768=ab^4\\\\\implies \frac{768}{12}=b^3 \implies b=4\\\\\therefore 12=4b \implies a=3\\\\\therefore y=3(4)^x\)

a) There are 8,145,060 possible outcomes when drawing five balls numbered 1 to 43.

b) There are 23 possible outcomes when drawing one ball numbered 1 to 23.

c) The probability of hitting a jackpot guessing all 6 numbers correctly is 1/186,492,840.

a) In this case, we want to choose 5 balls from a set of 43 balls, so we can calculate the total number of possible outcomes as:

⁴³C₅ = 43! / (5! * (43-5)!) = 43! / (5! * 38!) = 8,145,060

b) In this case, we want to choose 1 ball from a set of 23 balls, so we can calculate the total number of possible outcomes as:

²³P₁ = 23! / (23-1)! = 23

c) To calculate the probability of hitting a jackpot by guessing all six numbers correctly, we need to calculate the probability of each individual event and then multiply them together.

The probability of correctly guessing all five balls numbered 1 to 43 is:

1/8,145,060

The probability of correctly guessing the single ball numbered 1 to 23 is:

1/23

Therefore, the probability of hitting the jackpot by correctly guessing all six numbers is:

(1/8,145,060) * (1/23) = 1/186,492,840

This means that the chances of winning the jackpot in this lottery are approximately 1 in 186.5 million.

To know more about probability here.

https://brainly.com/question/11234923

#SPJ4

Answer: To calculate the percent decrease of water in the tank, we can use the following formula:

Percent decrease = (Initial value - Final value) / Initial value x 100%

In this case, the initial value of water in the tank is 5 inches and the final value is 3 inches. So, the percent decrease is:

(5 - 3) / 5 x 100% = 2 / 5 x 100% = 40%

So, the percent decrease of water in the tank is 40%.

Step-by-step explanation:

The estimated probability that all four randomly selected young American men are 68 inches or shorter is approximately 0.004 or 0.4%.

To calculate the probability that all four randomly selected young American men are 68 inches or shorter, we need to consider the probability for each individual man and multiply them together.

Let's assume that the probability of an individual young American man being 68 inches or shorter is p. Since we are selecting four men at random, the probability of each man being 68 inches or shorter is the same, and we can multiply their probabilities together.

The probability of one man being 68 inches or shorter is p. Therefore, the probability of all four men being 68 inches or shorter is p × p × p × p = p^4.

However, we are not given the specific value of p in the problem statement. If we assume that the height of young American men follows a normal distribution, we can look up the corresponding z-score for a height of 68 inches or shorter and use the standard normal distribution to estimate the probability.

For example, if we find that a height of 68 inches corresponds to a z-score of -1.0, we can use a standard normal distribution table or a calculator to determine the probability of a z-score less than or equal to -1.0. Let's say this probability is approximately 0.1587.

Therefore, the estimated probability that all four randomly selected young American men are 68 inches or shorter would be (0.1587)^4 = 0.004.

Thus, the probability is approximately 0.004 or 0.4% rounded to three decimal places.

For more such questions on probability visit:

https://brainly.com/question/30768613

#SPJ8

Answer:

D

Step-by-step explanation:

(f + g)(x)

= f(x) + g(x)

= 4x² + 7x - 3 + 6x³ - 7x² - 5 ← collect like terms

= 6x³ - 3x² + 7x - 8

Answer:

D. (f + g )( x ) = 6x³ - 3x² + 7x - 8

Step-by-step explanation:

Given :-

To Find :-

Solution :-

(f + g )( x ) = 4x² + 7x - 3 + 6x³ - 7x² - 5.

Arranging like terms.

(f + g )( x ) = 6x³ - 7x² + 4x² + 7x -5 - 3

Combine like terms.

(f + g )( x ) = 6x³ - 3x² + 7x - 8

Data types provide the information to the runtime about how much space is required in the memory. Datatypes helps to allocate memory. In OOPs bases programming languages it also helps to decide where memory should be allocated like heap and stack memory.

Data types allow a compiler to allocate the right memory space for a variable, and also let it perform type checking, marking sure the program uses the variables correctly per their defined type.

A data type is an attribute associated with a piece of data that tells a computer system how to interrupt its value. Understanding the data types ensures that data is collected in the preferred format and the value of each property is as expected.

Choosing the right data types for your tables, stored procedures, and variables not only improves performance by ensuring a correct execution plan, but it also improves data integrity by ensuring that the correct data is stored within a database.

Data type and length are the most fundamental integrity constraints applied to data in a database. Simply by specifying the data type for each column when a table is created, DB2 automatically ensures that only the correct type of data is stored in that column. Processes that attempt to insert or update the data to a non-conforming value will be rejected. Furthermore, a maximum length is assigned to the column to prohibit larger values from being stored in the table.

To know more about data type here

https://brainly.com/question/14960489

#SPJ4

Answer:

b. 4

Step-by-step explanation:

A negative number divided by a negative number is a positive number.

Therefore, -12 ÷ -3 = 4.

Answer:

Smallest number: 5555789

Largest number: 9999875

Step-by-step explanation:

Since each digit must be used at least once, the smallest number that can be formed with the digits 5, 7, 8 and 9 is 5555789 (ascending order of digits with smallest digit used four times

The largest number is 9999875 (descending order of digits with largest digit used four times)

The function satisfies the following properties:

(a) satisfies (u,v) = (v,u)

(c) satisfies (u, v+w) = (u,v) + (u,w)

(e) satisfies c(u,v) = (cu,v)

(g) satisfies (v,v) >= 0 and (v,v) = 0 if and only if v = 0

(a) The function satisfies (u,v) = (v,u) because the order of the elements in the inner product does not affect the result.

(c) The function satisfies (u, v+w) = (u,v) + (u,w) because it follows the distributive property of addition.

(e) The function satisfies c(u,v) = (cu,v) because it follows the property of scalar multiplication.

(g) The function satisfies (v,v) >= 0 and (v,v) = 0 if and only if v = 0 because it fulfills the requirements for a non-negative value for the inner product and the condition for the inner product to be zero only when the vector is the zero vector.

To know more about function refer here:

https://brainly.com/question/31062578

#SPJ11

Answer:

if an input produces more than one output, the table does not represent a function. In this case, table D is not a function. the x value 0 has three different output values, -1, 4, and 6; the input 2 also has three different output values.

Answer:

Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

PEMDAS

multiplication and division are on the same level, when you see both work from left to right

addition and subtraction are also on the same leve, work from left to Right

P > E > M = D > A = S

Answer:

p e m d a s

Step-by-step explanation:

I hope it's helpful for you

Answer:

See attached worksheet.

Step-by-step explanation:

The worksheet summarizes the steps for analyzing the data on the graph.  Note that a "line of best fit" was drawn to help illustrate the linear behavior of the data, and to better the question concerning hours of sunshine in another British town.  There are techniques for ensuring a line such as this fits the actual data as closely as possible.  These techniques draw a line that has the least overall deviation from the actual data.  For our purposes, a hand-drawn line appears to match the data reasonably well, so we are able to concule that the relationship is liner:  There is a proportional change in y for every set change in x.  That change is known as the slope.  The slope of this liner would represent the direct relationship between hours of sun and maximum temperature.

The exact value of cot θ in simplest radical form is 15/8.

To find the exact value of cot θ in simplest radical form, we can use the coordinates of the point where the terminal side of the angle passes through.

Given that the terminal side passes through the point (-15, -8), we can determine the values of the adjacent and opposite sides of the triangle formed in the standard position.

The adjacent side is the x-coordinate, which is -15, and the opposite side is the y-coordinate, which is -8.

Using the definition of cotangent (cot θ = adjacent/opposite), we can substitute the values:

cot θ = (-15)/(-8)

To simplify the expression, we can divide both the numerator and denominator by the greatest common divisor, which is 1 in this case:

cot θ = 15/8

Therefore, the exact value of cot θ in simplest radical form is 15/8.

Know more about   radical form  here:

https://brainly.com/question/30660113

#SPJ8

The complete question is :

If θ is an angle in standard position and its terminal side passes through the point (-15,-8), find the exact value of cot θ in simplest radical form.

Answer:

I don't know if I'm right

Step-by-step explanation:

40 x 7 =280 + 180 = 460      

Step-by-step explanation:

x/3 - 4=7

x - 12 = 21

x - 12 + 12 = 21 + 12

ans:33