can someone help me solve this problem?

Answer:

Step-by-step explanation:

−4−(−7)=

The opposite of −7 is 7.

−4+7

Add −4 and 7 to get 3.

3

Answer:

3

Step-by-step explanation:

Think of -4-(-7) as -4+7

just remove the negative and add instead

your answer is 3

Answer:

Step-by-step explanation:

meow goofy kid

By applying online survey method concept, it can be concluded that the company is using reward in the form of a $2.00 payment and an incentive by telling the readers that his or her input will make a difference (option D).

Online survey is a common survey method used by companies to gather data from a sample of the population.

Response rate is defined by the percentage of persons asked to answer a survey who actually answer the survey.

The company is using an online survey to allow them to reach a larger sample of people and gather data more efficiently.

However, by offering a small reward in the form of the $2.00 payment and an incentive by telling the readers that his or her input will make a difference, the company is hoping to increase the response rate and get more accurate results from the survey.  (option D)

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Full question:

Suppose you are reading an article online when the following text appeared in a popup window:

"Would you be interested in participating in a short health-related survey? If you qualify and complete this survey, you will receive $2.00".

What tactic is being used to increase the response rate for this survey? A. The company is selecting people randomly.

B. The company is using an online survey.

C. The company is using callbacks.

D. The company is using a reward in the form of the $2.00 payment and an incentive by telling the readers that his or her input will make a difference

Answer: 7 is the opposite of negative 7

Step-by-step explanation:

Hope this helps :)

Answer:

(-1,3)

Step-by-step explanation:

Solve for x in the first equation

3x = 6 - 3y

9x - 5y= -24

Replace all occurrences of x with 2 - y in each equation

9(2 - y) - 5y = -24

x = 2 - y

Simplify the left side

18 - 4y = -24

x = 2 - y

Solve for y in the first equation

-14y = -42

x = 2 - y

y=3

x = 2- y

Replace all occurrences of y with 3 in each equation

x=-1

y=3

(-1,3)

Hope this helps!

Please give brainliest :)

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Simplifying

3x + 6 = 9x + -24

Reorder the terms:

6 + 3x = 9x + -24

Reorder the terms:

6 + 3x = -24 + 9x

Solving

6 + 3x = -24 + 9x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-9x' to each side of the equation.

6 + 3x + -9x = -24 + 9x + -9x

Combine like terms: 3x + -9x = -6x

6 + -6x = -24 + 9x + -9x

Combine like terms: 9x + -9x = 0

6 + -6x = -24 + 0

6 + -6x = -24

Add '-6' to each side of the equation.

6 + -6 + -6x = -24 + -6

Combine like terms: 6 + -6 = 0

0 + -6x = -24 + -6

-6x = -24 + -6

Combine like terms: -24 + -6 = -30

-6x = -30

Divide each side by '-6'.

x = 5

Simplifying

x = 5

The value of perimeter of figure is,

⇒ 40 units

And, Area of figure is,

⇒ A = 75 units²

We have to given that,

The given coordinates pairs are,

⇒ A (7,-5), B (-5, 4), C (-8, 0) , D(4, -9)

Now, We know that,

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

⇒ d = √ (x₂ - x₁)² + (y₂ - y₁)²

Hence, We get;

AB = √(- 5 - 7)² + (- 5 - 4)²

AB = √ 144 + 81

AB = √225

AB = 15

BC = √(- 8 + 5)² + (0 - 4)²

BC = √9 + 16

BC = √25

BC = 5

CD = √(4 + 8)² + (- 9 - 0)²

CD = √144 + 81

CD = √225

CD = 15

DA = √(4 - 7)² + (- 9 + 5)²

DA = √9 + 16

DA = √25

DA = 5

Hence, The value of perimeter of figure is,

⇒ 15 + 5 + 15 + 5

⇒ 40 units

And, Area of figure is,

A = Lenght x Width

A = 15 x 5

A = 75 units²

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Overall, equations provide a mathematical representation and understanding of relationships, while tables present data points in a structured format.

When comparing an equation and a table, you can examine their characteristics, purpose, and the information they provide. Here are some points to consider when making comparisons:

Representation:

An equation represents a mathematical relationship between variables using symbols and mathematical operations. A table presents data or values in a structured format, typically organized into rows and columns.

Communication of Information:

Equations provide a concise and general representation of a relationship, allowing for predictions, calculations, and modeling. Tables present specific data points or values, providing a visual representation of how variables are related or how they change.

Variables:

Equations involve variables, which can be manipulated to explore different scenarios and analyze the relationship between quantities. Tables display specific values or data points for variables, showing how they vary or are related based on the given information.

Visualization:

Equations can express relationships symbolically and provide a mathematical understanding, but they may not offer a visual representation of data. Tables provide a visual representation of data points, allowing for a quick overview and easy comparison of values.

Flexibility:

Equations offer flexibility in terms of adjusting variables and parameters to explore different scenarios and make predictions. Tables can be easily modified or expanded by adding or removing data points to reflect new observations or additional information.

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Answer:

Step-by-step explanation:

Answer:

34 1/2 miles

Step-by-step explanation:

92 miles = 2 2/3 hours

x miles = 1 hour

92 ÷ 2 2/3 = 34.5

34.5 x 1 = 34.5

34.5 miles = 1 hour

If my answer is incorrect, pls correct me!

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-Chetan K

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The Correct choice is ~

Refer to attachment for solution ~

Answer:

Fe2 is elemental iron and Fe2O3 is a compound

Answer:

Step-by-step explanation:

Fe2 is elemental iron and Fe2O3 is a compound of iron and oxygen.

The distance that she runs from one corner of the field to another is given as follows:

147.1 yards.

The Pythagorean Theorem states that for a right triangle, the length of the hypotenuse squared is equals to the sum of the squared lengths of the sides of the triangle.

The distance in this problem is the diagonal of a rectangle, which is the hypotenuse of a right triangle in which the length and the width are the sides, hence:

d² = 85² + 120²

d = sqrt(85² + 120²)

d = 147.1 yards.

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The mean of Xt is 0. The autocovariance of Xt is 0, and the autocorrelation is 0 for all lags. Mean: 0. Autocovariance: 2cos(2). Autocorrelation: 2cos²(2).

The mean of Xt is the expected value of the series, which is 0, since the uniform distribution has a mean of 0.5, and when it is multiplied by 2π, it becomes 0. The autocovariance of Xt is the expected value of the product of two variables at different lags, which is 0 because the two variables are uncorrelated. The autocorrelation of Xt is the expected value of the product of two variables at different lags, divided by the product of their variances, which is also 0 since the variables are uncorrelated. The autocovariance and autocorrelation functions are both 2cos²(2πt), which is the expected value of Xt at different lags.

The complete question: Suppose = 2 cos[2( 12 + )], ∈ ℤ, where ~Uniform[0,1]. Find the mean, autocovariance and autocorrelation functions of the time series { , ∈ ℤ}.

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Answer:

f(-9) = -119

Step-by-step explanation:

Hello!

You can evaluate for f(-9) by substituting -9 for x in the equation f(x) = -11 + 12x.

The evaluated value is -119.

The claim is true. Inferential statistics is a technique used to extrapolate results from population samples and gauge their dependability.

However, it is referred to as descriptive statistics when statistics are used to organize and summarize data.

The procedure and statistical techniques:

1. Determine the purpose of the study.

2. Gather the data.

3. What are the data?

4. Make inferences

Statistics, as a numerical summary of a sample, is a science that involves gathering, arranging, condensing, and analyzing data in order to make judgments and provide answers.

Another goal of statistics is to provide a measure of certainty in any conclusions.

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The normal curve with a mean (μ) of 50 and a standard deviation (σ) of 6 is shown below. To find the probability of the random variable being greater than 55 (P(X > 55)), we need to calculate the area under the curve to the right of 55. This shaded area represents the probability.

The normal curve, also known as the Gaussian curve or bell curve, is a symmetrical probability distribution. It is characterized by its mean (μ) and standard deviation (σ), which determine its shape and location. In this case, the mean is 50 (μ = 50) and the standard deviation is 6 (σ = 6).

To find the probability of the random variable being greater than 55 (P(X > 55)), we calculate the area under the normal curve to the right of 55. Since the normal curve is symmetrical, the area to the left of the mean is 0.5 or 50%.

To calculate the probability, we need to standardize the value 55 using the z-score formula: z = (X - μ) / σ. Plugging in the values, we get z = (55 - 50) / 6 = 5/6. Using a z-table or statistical software, we can find the corresponding area under the curve for this z-value. This area represents the probability of the random variable being less than 55 (P(X < 55)).

However, we are interested in the probability of the random variable being greater than 55 (P(X > 55)). To find this, we subtract the area to the left of 55 from 1 (the total area under the curve). Mathematically, P(X > 55) = 1 - P(X < 55). By referring to the z-table or using software, we can find the area to the left of 55 and subtract it from 1 to obtain the shaded area representing the probability of the random variable being greater than 55.

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The answer is that we cannot verify the similarity of triangles △PQR and △STU based on the given information. The missing ratios QR/TU and PR/SU cannot be determined without additional data or measurements. Only the ratio PQ/ST can be determined, which is equal to 4. Therefore, we do not have enough information to conclude that △PQR and △STU are similar triangles.

To verify that the triangles △PQR and △STU are similar, we can compare the ratios of their corresponding sides.

We have:

QR/TU = ?

PR/SU = ?

PQ/ST = 52/13 = ?

To find the missing values, we can use the property of similar triangles that states the corresponding sides of similar triangles are proportional.

Let's find the missing values one by one:

1. QR/TU:

We don't have enough information to determine the value of QR/TU. It is not possible to establish a ratio without additional data or measurements.

2. PR/SU:

Similarly, we cannot determine the value of PR/SU without more information or measurements.

3. PQ/ST:

Given PQ/ST = 52/13, we can simplify the ratio:

PQ/ST = (4*13)/(1*13) = 4/1 = 4.

Therefore, PQ/ST = 4.

Since we were unable to determine the values of QR/TU and PR/SU, we cannot conclude that △PQR and △STU are similar triangles based on the given information.

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The 20 ft/sec is the timing of the string when 500 ft of string has been let out for the kite at a height of 300 ft, the wind carrying the kite horizontally away from her at a rate of 25 ft/sec.

Let dd be the real distance among the kite and the female, vv be the vertical distance among the female and the kite, and hh horizontal distance. Since the vertical distance is a constant (v = 300v=300) we understand that:

v^2 + h^2 = d^2 quad Rightarrow quad 300^2 + h^2 = d^2v 2 +h 2 =d 2 ⇒300 2 +h 2 =d 2

wherein dd and hh are capabilities of time tt, this means that that:

2hdfrac = 2ddfrac2h dtdh =2d dtdd

Since the vertical distance is v=300v=300, and the real distance is d = 500d=500, we understand that:

300^2 + h^2 = 500^2 quad h = sqrt = 400300 2 +h 2 =500 2 ⇒h= 500 2 −300 2 =four hundred

We're inquisitive about the price of extrade of the real distance dd so we have:

begin color dfrac &= dfrac cdot h cdot dfrac = dfrac cdot four hundred cdot 25 = color 20 text enddtdd = d1 ⋅h⋅ dtdh = 5001 ⋅four hundred⋅25=20 ft/sec

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Answer:

Gary worked 41 and a half hours

Step-by-step explanation:

$310.42 divided by $7.48 per hour = 41.5 hours

Answer:

Option (C)

Step-by-step explanation:

Equation of the quadratic function having vertex at (3, 4) and opening upwards,

So the the minimum point of the function is (3, 4).

Therefore, minimum value of the function is 4 at x = 3.

y = (x - h)² + k [Here, (h, k) is the vertex]

g(x) = 2(x - 4)² + 3

Vertex of the parabola is (4, 3).

Since, leading coefficient is positive, parabola will open upwards.

Therefore, vertex will be the minimum point.

Minimum value of the function will be 3 at x = 4.

Minimum value of the function 'f' is greater than the minimum value of the function 'g'.

Option (C) will be the answer.

Answer:

C. The minimum value of f is greater than the minimum value of g.

Step-by-step explanation:

I got a 100% on my test

The value of y as a mixed number is  2 2/3

Equations are expressions separated by an equal sign.

Given the following expression:

We are to find the value of b. Making comparison on both sides, we will have:

yb - 2/3b  = 2b

b(y - 2/3) = 2b

y - 2/3 = 2

y = 2 + 2/3

y = 8/3

y = 2 2/3

Hence the value of y as a mixed number is  2 2/3

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Answer:

The estimated number of times the spinner will land on 3 is 20.

Step-by-step explanation:

The complete question is:

A four-sided spinner is provided. If Tom spins the spinner 80 times then work out an estimate for the number of times the spinner will land on 3.

Solution:

Assume that the four-sided spinner is unbiased.

That is all the four outcomes are equally likely to be selected.

The probability that the spinner lands on any of the four numbers is:

P(1) = P (2) = P (3) = P (4) = 0.25

It is provided that Tom spins the spinner n = 80 times.

The spinner can land on any of the four numbers independently.

The random variable X, defined as the number of times the spinner lands on 3, follows a Binomial distribution with parameters n = 80 and p = 0.25.

The expected value of X is:

\(E(X)=np\)

        \(=80\times 0.25\\=20\)

Thus, the estimated number of times the spinner will land on 3 is 20.

The possible rational roots of the polynomial equation \(0 = 3x^8 + 11x^5 + 4x + 6\) are: \(\pm1, \pm1/3, \pm2, \pm2/3, \pm3, \pm1, \pm6, \pm2.\)

To find the possible rational roots of the polynomial equation \(0 = 3x^8 + 11x^5 + 4x + 6\), we can use the Rational Root Theorem.

The Rational Root Theorem states that any rational root of a polynomial equation in the form \(a_nx^n + a_(n-1)x^{n-1} + ... + a_1x + a_0\) (where the coefficients \(a_n, a_{n-1}, ..., a_1, a_0\) are integers) must be of the form p/q, where p is a factor of the constant term \(a_0\) and q is a factor of the leading coefficient \(a_n\).

In this case, the constant term is 6, and the leading coefficient is 3. Therefore, the possible rational roots of the polynomial equation can be determined by taking the factors of 6 and dividing them by the factors of 3.

The factors of 6 are \(\pm1, \pm2, \pm3, and \pm6.\)

The factors of 3 are \(\pm1\ and\ \pm3.\)

Combining these factors, the possible rational roots of the polynomial equation are:

\(\pm1/1, \pm1/3, \pm2/1, \pm2/3, \pm3/1, \pm3/3, \pm6/1, \pm6/3\)

Simplifying these fractions, we get:

\(\pm1, \pm1/3, \pm2, \pm2/3, \pm3, \pm1, \pm6, \pm2\)

Therefore, the possible rational roots of the polynomial equation \(0 = 3x^8 + 11x^5 + 4x + 6\) are: \(\pm1, \pm1/3, \pm2, \pm2/3, \pm3, \pm1, \pm6, \pm2.\)

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Answer:

The exact value of the given trigonometric expression is undefined.

Step-by-step explanation:

Given trigonometric expression:

\(\dfrac{\cos\left(\dfrac{2 \pi}{3}\right)}{\tan\left(-\dfrac{7 \pi}{4}\right)}+\csc(\pi)\)

To find the exact value of the given  trigonometric expression, begin by finding the exact values of each of the trigonometric functions in the expression

The exact value of cos(2π/3) is:

\(\implies \cos\left(\dfrac{2 \pi}{3}\right)=-\dfrac{1}{2}\)

The exact value of tan(-7π/4) is:

\(\implies \tan\left(-\dfrac{7 \pi}{4}\right)=1\)

Since the cosecant function is the reciprocal of the sine function, the exact value of csc(π) is:

\(\implies \csc (\pi)=\dfrac{1}{\sin(\pi)}=\dfrac{1}{0}=\textsf{unde\:\!fined}\)

Therefore:

\(\begin{aligned}\implies \dfrac{\cos\left(\dfrac{2 \pi}{3}\right)}{\tan\left(-\dfrac{7 \pi}{4}\right)}+\csc(\pi)&=\dfrac{-\dfrac{1}{2}}{1}+\dfrac{1}{0}\\&=-\dfrac{1}{2}+\dfrac{1}{0}\\\\&=\textsf{unde\:\!fined}\end{aligned}\)

Answer:

$11,875

Step-by-step explanation:

3.75×5 = 18.75%

\(\frac{18.75}{100}\)×10000 = 18.75 × 100 = 1875 (we cut the zeros so that it will be easier to solve the equation)

10,000 + 1875 = $11,875 after 5 years

$1875 has accrued in Latasha's savings account

$11,875 is the total amount in Latasha's savings account after 5 years

Part A: Rebecca's credit card balance can be calculated using the equation x = (51 - 1) 0.02 if her finance charge is $51.

Part B: By making the purchase on the final day of the billing cycle rather than the first day, Rebecca will be able to avoid paying $27 in finance charges.

How do equations work?

A mathematical statement proving the equality of values between two or more mathematical expressions is called an equation.

Equation symbols (=) are used to represent equations.

A finance charge is what?

The interest and other fees levied on credit cards are included in a finance charge.

Typically, the finance charge is based on a stated APR (annual percentage rate).

The month's billing cycle lasts for 28 days.

Balance at current starting = x.

APR = 24%, or annual percentage rate.

The monthly percentage rate (MPR) equals 2% (24% divided by 12).

The final day's purchase cost $1,400.

$51 is the total finance fee for the month.

($1,400 x 2% x 1/28) = $1 finance fee for the last-minute purchase.

$50 ($51 - $1) serves as the initial balance's finance charge.

The starting balance at this time is x = $2,500 ($50 x 2%).

Current Beginning Balance Equation: x = 51 - 1 0.02

($1,400 x 2%) Equals $28 in total loan charges for the last-minute purchase.

Finance charge savings from buying on the last day equals $27 ($28 - $1).

By buying the $1,400 gift for her friend on the last day of the billing cycle rather than the first, Rebecca can avoid paying $27 in finance charges.

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Answer:

6th option in first

then, 1st option

then, 2nd option

then, 4th option

then, 3rd option

and last one is option 5

Step-by-step explanation:

1. 10/9 => 0.9

2. 125/100 => 1.25

3. 3√8 => 2

4. 15/8 => 1.875

5. √19 => 4.358

6. 1.3 × 0=> 0

Answer:

0.66, 2.39

Step-by-step explanation:

two decimal places look like this. Ex: (4.74)

are you sure about the ques?