Which of these forms a perfect square: Select all expressions that are prefect squares. Group of answer choices (a+3)(3+a) (a+b)(b+a) (2x-1)(2x+1) (x+5)(x+5) (-9+c)(c-9) (y-10)(10-y) (4-3x)(3-4x)

At the 5% significance level, a researcher conducts six separate hypothesis tests. the likelihood of finding two or fewer Type Errors.

Declare your null and alternate hypotheses in Step 1. Data collection is step two. Perform a statistical test in step three. In step four, you must choose whether to reject or not to reject your null hypothesis. Deliver your results in Step 5. Five steps make up the statistical process: design the study, assemble the data, Analyze the data, draw conclusions, and take action. In a planned experiment, the variables are under the researchers' control.

Utilizing sample data, hypothesis testing is a method used to determine whether a hypothesis is tenable. The test offers proof that, given the available data, the hypothesis is plausible. By measuring and reviewing a representative sample of the population under study, statistical analysts can evaluate a theory.Procedures for testing hypotheses Identifying the null hypothesis is the first step.

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Answer:

The length of w is 50.0 cm.

Step-by-step explanation:

To find the length of w, we can use the Law of Sines:

w / sin V = x / sin X

Plugging in the values given in the question, we get:

w / sin 16° = 77 cm / sin 74°

Solving for w, we get:

w = 50.0 cm

Rounding to the nearest 10th of a centimeter, we get:

w = 50.0 cm

Therefore, the length of w is 50.0 cm.

Answer:

w=80.1 cm

Step-by-step explanation:

According to the Law of Sines:

[tex]\frac{\sin(\alpha)}{a}=\frac{\sin(\beta)}{b}=\frac{\sin(C)}{c}[/tex]

For this problem, let

[tex]\alpha[/tex]=∠X=74°

[tex]\beta[/tex]=∠V=16°

Since the sum of the angle measures in all triangles must equal 180°, ∠w must equal 90°.  So, for this problem, let

C=∠W=90°.

And let

a=x=77 cm

c=w

So,

[tex]\frac{\sin(74)}{77\ cm}=\frac{\sin(90)}{w}\\0.01248\ cm=\frac{1}{w}\\w=80.1\ cm[/tex]

This can be checked using the Law of Sines with all values entered.

To find b, use the Pythagorean Theorem:

[tex](80.1\ cm)^2=(77\ cm)^2+b^2\\6416.01\ cm^2=5929\ cm^2+b^2\\487.01\ cm^2=b^2\\b=22.07\ cm[/tex]

So,

[tex]\frac{\sin(74)}{77\ cm}=\frac{\sin(16)}{22.07\ cm}=\frac{\sin(90)}{80.1\ cm}\\0.0125\ cm=0.0125\ cm=0.0125\ cm[/tex]

The person whose purple paint will be bluer is Skylar.

A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100.

In this case, Hassan mixes 1 cup of blue paint and 3 cups of red paint. The percentage for blue paint will be:

= 1 / (1 + 3) × 100

= 1/4 × 100

= 25%

Skylar mixes 5 cups of blue paint and 3 cups of red paint. The percentage for blue will be:

= 5 / (5 + 3) × 100

= 5/8 × 100

= 62.5%

Skylar has bluer paint.

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Given Dr. Sparrow's design, his study is best able to overcome the issue of causality, as well as the issue of some potential third variables.

By using a multivariate design, Dr. Sparrow is able to examine the relationships between multiple variables simultaneously, which can help to identify the potential influence of each variable on the outcome of interest (marital satisfaction in this case). This can help to establish a causal link between the variables if one is present, as it allows for the examination of multiple variables at the same time, rather than just two variables as in a simple bivariate design.

Additionally, by controlling for other potential confounding variables, Dr. Sparrow is able to account for the potential influence of these variables on the relationship between income and marital satisfaction, which helps to establish a more robust understanding of the potential causal link between these two variables.

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When a company applies statistical techniques to develop and support its ability to produce high-quality goods and services, it is implementing statistical quality control.

Quality control (QC) is a procedure or set of actions intended to make sure that a manufactured product or performed service complies to a described set of quality standard or meets the conditions of the client or customer. QC is similar to quality assurance (QA), but not exactly same.

The quality control applied in a business is greatly dependent on the product or the industry. For example, in food and drink manufacturing, quality control also includes certifying the product will not make a consumer unwell, so the company does chemical and microbiological examination of samples from the production line.

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The Perimeter of of the Figure is shown below.

To adjust the size of a figure without altering its shape, a scale factor is a number or conversion factor that is utilised. It is employed to change the size of an object. If the original figure's dimensions and the dilated (increased or lowered) figure's dimensions are known, the scale factor can be determined.

Gives:

We have area of each small square is 1 sq cm.

So, We have three grids a

For figure (i) there are 11 small square

So, Perimeter of the given figure =( 18  ×1)cm

                                                       =18 cm

For figure (ii) there are 13

Perimeter of the given figure =(28×1)cm

                                                 =28 cm

For figure (iii) there are 13

Perimeter of the given figure =(28×1)cm=28 cm.

                                                 =28 cm

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Answer:

.00008

Step-by-step explanation:

8x10^-5 = .00008

Your moving the dot over 5 times to the left since its negative. If it was postive you wold move the dot 5 times to the right

Answer: 0.00008

Step-by-step explanation: Yes, I know there are A LOT of zeros. So, to find this answer, you would rewrite the answer like this:

- 8*10^(-5)

So, here's a little trick, you multiply 8 by 10, to get 80. Then, since it is -5, you move 5 decimal places to the LEFT. This is why there are so many zeros. I hope this explanation helped!

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

10.

If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Answer:

Step-by-step explanation it will be 23 cups

Answer:

0, -12

Step-by-step explanation:

Answer:

x=6

Step-by-step explanation:

12-6=6 or 6+6=12

The measure of both angles on calculation is found to be 44° and 136° respectively.

What are supplementary angles ?

Supplementary angles are those angles that sum up to 180 degrees. For example, angle 130° and angle 50° are supplementary angles because sum of 130° and 50° is equal to 180°. Similarly, complementary angles add up to 90 degrees.

Given : difference between the measure of two supplementary angles is 92 .

Let the two angles be x and y then , x - y = 92

Since , supplementary angles add up to 180 degrees

x + y = 180 (say 1)

x - y = 92(say 2)

---------------add(1 & 2)

2x = 272

x = 272/2

x = 136 <=== this is one angle

x + y = 180

136 + y = 180

y = 180 - 136

y = 44 <=== this is the other angle

Hence , the measure of both angles on calculation is found to be 44° and 136° respectively.

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Answer:

  75 mg

Step-by-step explanation:

You want the dose for a 72 pound person at the rate of 2.5 mg/kg.

We multiply by conversion factors that cancel unwanted units, leaving the units we want.

At the end of the unit conversion, we need to determine if the calculated dose is closer to 75 mg or 100 mg. It is less than 87.5 mg, so is closer to 75 mg.

  [tex]\dfrac{2.5\text{ mg}}{\text{kg}}\times(72\text{ lb})\times\dfrac{0.453\text{ kg}}{\text{lb}}=2.5\times72\times0.453\text{ mg}\approx81.54\text{ mg}\\\\\approx\boxed{75\text{ mg}}[/tex]

__

Additional comment

We found the nearest 25 mg dose by dividing by 25 mg, and rounding the 3.26 dose result to 3 doses of 25 mg each.

The quadrilateral that has vertices (2,0), (0,-2), (-2,4) and (-4,2) is option

b. rectangle

To determine the special quadrilateral that is formed by connecting the midpoints of the sides of the quadrilateral with vertices (2,0), (0,-2), (-2,4) and (-4,2), we can find the midpoints of each side and then determine the shape formed by these points.

The midpoint of a line segment is the point that is exactly halfway between the two endpoints of the line segment. To find the midpoint of a line segment, we can take the average of the x-coordinates of the endpoints and the average of the y-coordinates of the endpoints.

We can find the midpoint of the side between (2,0) and (0,-2) by taking the average of the x-coordinates (2 and 0) and the average of the y-coordinates (0 and -2), which gives us the point (1,-1).

We can find the midpoint of the side between (0,-2) and (-2,4) by taking the average of the x-coordinates (0 and -2) and the average of the y-coordinates (-2 and 4), which gives us the point (-1,1).

We can find the midpoint of the side between (-2,4) and (-4,2) by taking the average of the x-coordinates (-2 and -4) and the average of the y-coordinates (4 and 2), which gives us the point (-3,3).

We can find the midpoint of the side between (-4,2) and (2,0) by taking the average of the x-coordinates (-4 and 2) and the average of the y-coordinates (2 and 0), which gives us the point (-1,1).

Therefore, the special quadrilateral formed by connecting the midpoints of the sides of the given quadrilateral is a rectangle.

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Answer: 2×2×7

The prime factorization of 28 = 2×2×7.

Step-by-step explanation: Do the prime factorization

28

7   4

    2    2

The time required to fill the pool by using both the hoses is 4/5 hours.

Algebra is the study of mathematical expressions, in which letters and other generic symbols are used to represent numbers and quantities in formulas and equations.

Given that,

Time taken by hose A to fill 3/4 of the pool = 1 hour.

And time taken by hose B to fill the 2/4 of the same pool = 1 hour.

From the given information,

Time taken by hose A to fill the whole pool = 1 x (4/3) = 4/3 hours

And time take by hose B to fill the whole pool = 1 x (4/2) = 1 x 2 = 2 hours.

The LCM of 4/3 and 2 is 4, which can be considered as total capacity of pool.

The efficiency of hose A = 4/(4/3) = 3

The efficiency of hose B = 4/2 = 2

Total time taken to fill the whole pool by using both hoses

= 4 / (3+2) = 4 / 5 hours

If both hoses are uses, then it will take 4/5 hours to fill the pool.

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a) The loan that Neil made for the purchase of a new refrigerator is P33,030.

b) The total amount to be repaid over a period of two years is P35,672.16.

The loan amount is the difference between the purchase price of a new refrigerator and the deposit (down payment).

The total amount to be repaid over the loan period includes the loan amount and the interest.

These amounts can be computed using an online finance calculator, including the monthly payments.

The cost of a new refrigerator = P36,700

Deposit (down payment) = 10%

The amount of the loan = P33,030 (P36,700 - P3,670)

N (# of periods) = 24 months (2 years x 12)

I/Y (Interest per year) = 7.5%

PV (Present Value) = P33,030

FV (Future Value) = P0

Results:

PMT = P1,486.34

Sum of all periodic payments = P35,672.16 ($1,486.34 x 24)

Total Interest = P2,642.16

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We know that,

Inequality-

In mathematics, the relationship between two expressions or values that are not equal is called an inequality.

Group terms with the same variable and move the constant to the other side of the inequality

What causes inequality?

Inequality image result

The main factors behind the widening domestic income inequality mentioned in the literature include technological progress, globalization, commodity price cycles, and domestic economic policies such as redistributive fiscal policies, labor and product market policies. It is included.

According to the question,

Given data in the question,

4x + 12 ≤ 28

Substrating (28-12)=16

We can say that,

4x  ≤ 16

16 divided by 4.

Therefore,

(16/4)=

x<4

the value of x is less than 4,

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3 is the value of x  which makes the given inequality true.

A relationship that compares two numbers or other mathematical expressions in an unequal way is known as an inequality in mathematics.  On the number line, it is most frequently used to compare the sizes of two numbers. To represent various types of inequalities, a variety of notations are used:

A < B, such as a, denotes that an is greater than b.

A > B indicates that an is greater than b.

A and b are not equivalent in either scenario. As a result, an is strictly less than or strictly greater than b, and these relationships are referred to as strict inequalities. Equivalence is disregarded.

According to the question,

Given data in the question,

4x + 12 ≤ 28

Substrating (28-12)=16

We can say that,

4x  ≤ 16

16 divided by 4.

Therefore,

(16/4)=

x<4

the value of x is less than 4,

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The total cost at the peoples paper be less expensive will represent by the inequality 650 + 80w <  145w.

What is inequality?

In mathematics, inequalities specify the connection between two non-equal numbers. Equal does not imply inequality. Typically, we use the "not equal sign ()" to indicate that two values are not equal. But several inequalities are utilized to compare the numbers, whether it is less than or higher than.

Given that the daily info newspaper charges a fee of $650 plus $80 per week to run an ad.

Assume that after w weeks the total cost at the peoples paper be less expensive.

To run ad. for w week, the cost will be 80w.

The total cost of material of newspaper is p(w) = 650 + 80w

The peoples paper charges $145 per week.

The peoples paper charges after w week will be f(w) = 145w.

According to the question:

p(w) < f(w)

650 + 80w < 145w

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Answer:

15 liter = 507.210848 Fluid Ounces

because 1 liter = 33.8140565 so you do 33.8140565 x  15 = 507.210848

mark me brainliest

hope this helps you

Step-by-step explanation:

Answer:

Step-by-step explanation:

First think about how many times 5 goes into 32. That would be 6 times since 6*5 is 30.

Now we just have the 2 from the 32 left over. The two will be put on top of the 5 from 32/5 so it will be 2/5

Put the two together and it would be 6 and 2/5

The graph of the inverse function of f(x) is given by the image shown at the end of the answer.

The function in this problem is defined as follows:

f(x) = 1/x + 4.

The definition of the function is given because of the asymptotes as follows:

To obtain the inverse of a function y = f(x), first the variables y and x are exchanged, as follows:

x = 1/y + 4.

Then the variable y has to be isolated, as follows:

1/y = (x - 4).

y(x - 4) = 1

y = 1/(x - 4)

Meaning that the inverse function is defined as follows:

[tex]f^{-1}(x) = \frac{1}{x - 4}[/tex]

Which has the graph given by the image shown at the end of the answer.

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Answer: B

Step-by-step explanation: literally just did it

Answer:

9.1

Step-by-step explanation:

9.1 would be greater because it is basically 9 + 0.1.

The description of the proportional relationship represented by the equation y = 8 - 5x is A. The graph is a line that goes through points (0, 8) and ( 4, -12 ).

The graph is given in the form of a linear equation which is y = mx + b. In this equation, b is the y - intercept, or the point the line crosses the y - axis when x is 0. This point on y = 8 - 5x, is 8.

If the line passes through the x axis at point 4, then the y - intercept would be :

= 8 - 5 ( 4)

= 8 - 20

= - 12

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Options for this question are:

Answer:

You would have $6055.36 in 7 years.

Step-by-step explanation:

Answer:

C) Cube 2.

Step-by-step explanation:

Cubing 2 means to take 3 as an exponent of 2.

Parantheses

Exponents  ==> 2³

Multiplication  ==> 3*2

Division  ==> 2³ ÷ 4

Addition

Subtraction  ==> 2-2³

In PEMDAS, Exponents is the second highest priority in an equation, so it comes first in 3×2-2³ ÷ 4 as there is no parantheses.

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Polynomials can be divided using long division method and

synthetic division method.

What is a polynomial?

Algebraic expressions which are made up of coefficients and variables are called polynomials.

For example x + 3, 3y² -10, r³, t³ + 4t³ - 80, etc.

Polynomials can be classified as monomials, binomials and trinomials based upon the number of terms present.

According to the given question:

There are two methods that can be employed while dividing two given polynomials:

1. Long Division Method

The long division method is the most frequent and general method for dividing polynomials by binomials or any other form of polynomials.

Steps:

Step 1: Divide the dividend’s first term by the divisor’s first term, and use it as the quotient’s first term.

Step 2: Multiply the divisor, then place the product beneath the dividend

Step 3: To make a new polynomial, subtract.

Step 4: Use the new polynomial obtained after subtraction to repeat the operation.

2. Synthetic Division Method

It is a technique for dividing a polynomial by a linear binomial using only the coefficient values. We write the polynomials in standard form from the greatest degree term to the lowest degree term in this manner.

Steps:

Step 1: Ensure that the divisor is in the form of x − k.

Step 2: Write the dividend coefficients on the right and k on the left to set up the division.

Step 3: Now, reduce the coefficient of the dividend’s highest degree term to zero.

Step 4: Multiply k by that leading coefficient and write the product below the second coefficient on the dividend’s left side.

Step 5: Multiply the numbers in the second column.

Step 6: Multiply k by the number obtained in step 5 and write the result in the next column to the right.

Step 7: Finally, we’ll write the final solution, which will be one degree below the dividend.

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The sign of F on the interval -4<x<1 is 0

We know that in mathematics,  a function from a set X to a set Y assigns to each element of X exactly one element of Y.

The given function is

f(x)=(x-2)(x+4)(x+5)(x-1)(x-9)

The Interval is given as -4<x<1

Substituting the values of x in the function we have

f(x)=(-5-2)(-4+4)(1+5)(2-1)(9-9)

This implies that

f(x)=(0)(0)(6)(1)(0)

Multiplying the brackets to have

f(x)=0

In conclusion, the sign of F on the interval -4<x<1 is 0

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Answer:

158 liters.

Step-by-step explanation:

G=gallons

L=Liters

Q=Quarts

42G * 4Q = 168Q

1Q = 3.785L

3.785L * 42G = 158L or another way is to go by the formula is by dividing the volume value by 1.057:

168Q divide by 1.057 = 158