Please answer the following with an understandable explanation:

Answer:

9

Step-by-step explanation:

i can not really tell what letters are on the picture but i think it is 9

Answer:

i believe it is already written in the quadratic formula. there's nothing to change

Step-by-step explanation:

Greetings from Brasil...

According to the statement of the question, we conclude that the area of a square is requested, whose value is 171 in²

The area of a square is given by the expression:

A = S²

where S is the side of the square - just what we want to know

So:

A = S²

171 = S²

√171 = S

Answer:

2.6

Step-by-step explanation:

Since we are rounding to the nearest tenth, we have to look at the tenths and hundredths place. If the hundredths place has a digit higher or equal to 5, we have to add 1 to the digit in the tenths place. If it is 4 or lower, the tenths place digit stays the same. In this case, we have to round up. After you round, we have to put the numbers in front of the place we just rounded to. We get 2.6

I hop this helped and please mark me as brainliest!

In ABCD a square with four congruent sides and four congruent angles, ΔBAD is congruent to ΔBCD by the ASA rule.

In mathematics, the term "congruent" refers to figures and forms that may be flipped or rearranged to match up with other ones. These forms can be mirrored to produce related shapes.

A triangle is a closed polygon with three line segments that intersect at each of its three angles. When the sides and angles of two triangles match, the triangles are said to be congruent. Hence, two triangles may be placed side by side and angle by angle on top of one another.

According to the ASA rule, two triangles are said to be congruent if any two angles and sides included between the angles of one triangle are comparable to the corresponding two angles and sides included between the angles of the second triangle.

In the given figure ABCD is a square.

In ΔBAD and ΔBCD

∠B ≅ ∠B ----Common Angle

∠A ≅ ∠A  ------Each of 90° angle

Side BD ≅ Side BD ----Common Side

So we can say that ΔBAD ≅ ΔBCD -----(ASA rule)

Hence, ΔBAD is congruent to ΔBCD by the ASA rule.

Learn more about Congruent triangles:

https://brainly.com/question/1675117

#SPJ4

Answer:

h=5in

Step-by-step explanation:

The following areas are equal:

1. Front and Back.

2. Left and right.

3. Top and Bottom.

Therefore, we calculate 3 areas and

multiply each by 2 to get the 6 areas:

As=2(3*h) + 2(10*h) + 2(10*3)=1901n^2.

6h + 20h + 60 = 190,

26h = 190 - 60 = 130,

h = 5in.

Answer:

A B C E

Step-by-step explanation:

The graph has a slope of .4

Rate of change is another word for slope

It is proportional.

1.2/3 = .4 --> Slope of .4 (correct)

Graph would be something like...

y=.4x

(0,0)

(1, .4)

(2, .8)

(3, 1.2)

(4, 1.6)

(5, 2)

so fourth.

A. statistically significant difference in the mean blood hemoglobin levels between breastfed infants and formula-fed infants at α = 0.05.

B. the 95% confidence interval for the difference in population means between breast-fed infants and formula-fed infants is (−0.06, 1.18).

C. Both the hypothesis test and the confidence interval lead to the same conclusion that there is a difference in the mean blood hemoglobin levels between the two feeding regimens.

What is null hypothesis?

In statistics, the null hypothesis (H0) is a statement that assumes that there is no significant difference between two or more groups, samples, or populations.

(a) To test the hypothesis that there is a difference in the population means between breast-fed infants and formula-fed infants, we can use a two-sample t-test with equal variances. The null hypothesis is that the population means are equal, and the alternative hypothesis is that they are not equal. Using α = 0.05 as the significance level, the critical value for a two-tailed test with 40 degrees of freedom is ±2.021.

The test statistic can be calculated as:

t = (x1 - x2) / (Sp * √(1/n1 + 1/n2))

where x1 and x2 are the sample means, Sp is the pooled standard deviation, and n1 and n2 are the sample sizes. The pooled standard deviation can be calculated as:

Sp = √(((n1 - 1) * s1² + (n2 - 1) * s2²) / (n1 + n2 - 2))

where s1 and s2 are the sample standard deviations.

Plugging in the values from the table, we get:

t = (13.3 - 12.4) / (1.776 * √(1/23 + 1/19)) = 2.21

Since the absolute value of the test statistic is greater than the critical value, we reject the null hypothesis and conclude that there is a statistically significant difference in the mean blood hemoglobin levels between breastfed infants and formula-fed infants at α = 0.05.

(b) To construct a 95% confidence interval for the difference in population means between breast-fed infants and formula-fed infants, we can use the formula:

(x1 - x2) ± tα/2,Sp * √(1/n1 + 1/n2)

where tα/2,Sp is the critical value of the t-distribution with (n1 + n2 - 2) degrees of freedom and α/2 as the significance level.

Plugging in the values from the table, we get:

(x1 - x2) ± tα/2,Sp * √(1/n1 + 1/n2)

= (13.3 - 12.4) ± 2.021 * 1.776 * √(1/23 + 1/19)

= 0.56 ± 0.62

Therefore, the 95% confidence interval for the difference in population means between breast-fed infants and formula-fed infants is (−0.06, 1.18).

(c) The hypothesis test and the confidence interval both lead to the conclusion that there is a difference in the mean blood hemoglobin levels between breast-fed infants and formula-fed infants. In part (a), we rejected the null hypothesis that the population means are equal, which means we concluded that there is a difference. In part (b), the confidence interval does not contain 0, which means we can reject the null hypothesis that the difference in means is 0 at the 95% confidence level.

Therefore, both the hypothesis test and the confidence interval lead to the same conclusion that there is a difference in the mean blood hemoglobin levels between the two feeding regimens.

To learn more about null hypothesis from the given link:

brainly.com/question/28920252

#SPJ4

|z+2+2i|≤2}, the region inside the circle

|z+2+2i/z-2-4i|≤1 implies that the distance between z+2+2i and z-2-4i is less than or equal to 1. The locus of all such points is the region enclosed by the two circles.

The following are the steps to be followed to shade the regions in the complex plane that are defined by the equations shown:

Given, Shade the region in the complex plane that is defined by:

{x€C :|z+2+2i|≤2}

Step 1: Plot the point (2,-2) on the complex plane. This point represents -2 - 2i.

Step 2: Draw a circle of radius 2 units around this point. This circle represents the set of points in the complex plane that are 2 units away from -2 - 2i.

Step 3: Shade the region inside the circle.

Given, Shade the region in the complex plane

{z€C : |z+2+2i/z-2-4i|≤1}

Step 1: Plot the point (-2,-2) and (2,4) on the complex plane.

Step 2: Draw a circle of radius 1 unit centered at (-2,-2) and another circle of radius 1 unit centered at (2,4).

Step 3: Shade the region inside both the circles.

This is because |z+2+2i/z-2-4i|≤1 implies that the distance between z+2+2i and z-2-4i is less than or equal to 1.

Therefore the locus of all such points is the region enclosed by the two circles.

learn more about complex plane here:

https://brainly.com/question/24296629

#SPJ11

Answer:

Plot point -6 and 2 and just keep making the line straight off the graph  I think this should help

Step-by-step explanation:

The utility functions in options a, b, c, and f are not risk-averse on the interval [a,b], while the utility functions in options d and e are risk-averse on the interval [a,b].

In economics and finance, risk aversion refers to a preference for less risky options over riskier ones. Utility functions are mathematical representations of an individual's preferences, and they help determine whether someone is risk-averse, risk-neutral, or risk-seeking. A risk-averse individual would have a concave utility function, indicating a decreasing marginal utility of wealth.

For options a, b, c, and f, the utility functions are and f(x) = -ln(x), g(x) = \(-e^(^-^x^)\), h(x) = \(-4x^2\) - 10x, respectively. These utility functions do not exhibit concavity, which means they are not risk-averse. Instead, they either show risk-seeking behavior (options a and b) or risk-neutrality (options c and f).

On the other hand, options d and e have utility functions f(x) = ln(x), g(x) = 1/(e^(2x)), h(x) = \(-x^2\) + 10,000x and f(x) = ln(-2x), g(x) = -1/(\(e^(^2^x^)\)), h(x) = \(x^2\) - 100,000x, respectively. These utility functions display concavity, indicating a decreasing marginal utility of wealth. Thus, options d and e can be considered risk-averse on the interval [a,b].

Learn more about risk-averse

brainly.com/question/30641789

#SPJ11

Answer:

No, because the y-intercepts of lines g and h are different.

Step-by-step explanation:

Answer:

−3.6

7.5

1

2

6.3

18

Step-by-step explanation:

Plug it into a calculator if they are not correct.

The  number of  ways can she rank the 3 djs are 336

The quantity of potential plans for a given set is resolved numerically, thus this system is alluded to as stage.

Basically said, a change is an idea that alludes to the great many potential game plans or orders. The plan's organization is significant if utilizing changes

Total number of DJs = 8

Required DJs = 3

ⁿPₓ = n!/(n - x)!

⁸P₃ = 8!/(8-3)!

⁸P₃ = 8×7×6×5!/5!

⁸P₃ = 336

Thus, required number of ways are 336.

To know more details about permutation visit:

brainly.com/question/1216161

#SPJ4

Answer:

Let's assume that the distance Tomas drove be "x" miles.

Then, according to the problem, the distance Brandy drove is four times Tomas's distance, which is 4x miles.

Also, the total distance they drove together is 75 miles.

So, we can write the equation as:

x + 4x = 75

Simplifying the equation, we get:

5x = 75

Dividing both sides by 5, we get:

x = 15

Therefore, Tomas drove 15 miles.

The equation that can be used to find the number of miles Tomas drove is:

x = 15.

Step-by-step explanation:

The number of flower arrangement and the costs are illustrations of linear equation

If Mrs. Dawson orders 1 small arrangement, it will cost $39 at either shop.

Represent the number of small arrangements with x, and the total cost with y.

Using the data from the question, we have:

Hampton Florist: y = 12x + 27.

Farid's Flowers: y = 32 + 7x

When both flower arrangements cost the same, we have the following equation

12x + 27 = 32 + 7x

Collect like terms

12x - 7x = 32 - 27

Evaluate the like terms

5x = 5

Divide both sides by 5

x = 1

This means that 1 small arrangement would cost the same in both flower shops

In (a), we have:

y = 12x + 27.

Substitute 1 for x

y = 12(1) + 27

y = 39

Hence, if Mrs. Dawson orders 1 small arrangement, it will cost $39 at either shop.

Read more about linear equations at:

https://brainly.com/question/14323743

Answer:

Longest side = 110 cm

Step-by-step explanation:

The extended ratio of the sides of a triangle is 7:8:10

Let sides are 7x, 8x and 10x.

The perimeter of the triangle is 275 cm.

Perimeter of a triangle = sum of all sides

7x+8x+10x = 275

25x = 275

x = 11

Longest sides of the triangle = 10x

= 10 (11)

= 110 cm

So, the longest side of the triangle is 110 cm.

Answer:

y=2x+5

Step-by-step explanation:

If you graph it you can figure out the starting point of the parallel line.

The rate of change is 2 and since the point the parallel line needs to pass through is (-1,3) you need to shift the starting point (y-intercept) up by 10 units.

Shifting the y-intercept of y=2x-5 up by 10 makes the new line y=2x+5.

Answer:

1.a

2. d

3 a

4 a

5 c

6 d

7 b

8 b

9 b

10 d

11 c

12 d

not too confidnet on the later fractions but most of  them should be fine :D

Step-by-step explanation:

help please someone

The volume of the rectangular prism is given by the equation

A = 13 1/2 inches³

What is the Volume of a Rectangle?

The volume of the rectangle is given by the product of the length of the rectangle and the width of the rectangle and the height of the rectangle

Volume of Rectangle = Length x Width x Height

Volume of Rectangle = Area of Rectangle x Height

Given data ,

Let the volume of the rectangular prism be represented as A

Now , the equation will be

The length of the rectangular prism L = 1 1/2 inches

The length of the rectangular prism L = 1.5 inches

The width of the rectangular prism L = 2 1/4 inches

The width of the rectangular prism L = 2.25 inches

The height of the rectangular prism L = 4 inches

So , the volume of the rectangular prism A = Length x Width x Height

Substituting the values in the equation , we get

The volume of the rectangular prism A = 1.5 x 2.25 x 4

On simplifying the equation , we get

The volume of the rectangular prism A = 13.5 inches³

Hence , the volume of rectangular prism is  13.5 inches³

To learn more about volume of rectangle click :

https://brainly.com/question/25422723

#SPJ5

Range = 443 - 1.90 = 441.10, Variance ≈ 17417.61, Standard Deviation ≈ 131.96. The variance and standard deviation provide measures of how spread out the data points are from the mean.

To find the range, you need to subtract the smallest value from the largest value in the dataset. In this case, the smallest value is 1.90 and the largest value is 443. Therefore, the range is:

Range = 443 - 1.90 = 441.10

The range indicates the difference between the highest and lowest values in the dataset. In this case, the range is quite large, suggesting a significant disparity in Big Mac prices across the countries.

Now, let's calculate the variance and standard deviation to further analyze the variation in the prices:

Step 1: Calculate the mean (average) of the dataset:

Mean = (5.30 + 5.31 + 2.60 + 3.19 + 3.39 + 2.32 + 6.83 + 5.09 + 4.81 + 443 + 2.77 + 1.90) / 12

= 479.31 / 12

= 39.94

Step 2: Calculate the squared differences from the mean for each value:

(5.30 - 39.94)², (5.31 - 39.94)², (2.60 - 39.94)², (3.19 - 39.94)², (3.39 - 39.94)², (2.32 - 39.94)², (6.83 - 39.94)², (5.09 - 39.94)², (4.81 - 39.94)², (443 - 39.94)², (2.77 - 39.94)², (1.90 - 39.94)²

Step 3: Calculate the variance by summing up the squared differences and dividing by the number of data points:

Variance = [(5.30 - 39.94)² + (5.31 - 39.94)² + (2.60 - 39.94)²+ (3.19 - 39.94)² + (3.39 - 39.94)² + (2.32 - 39.94)² + (6.83 - 39.94)² + (5.09 - 39.94)² + (4.81 - 39.94)² + (443 - 39.94)² + (2.77 - 39.94)² + (1.90 - 39.94)²] / 12

Step 4: Calculate the standard deviation by taking the square root of the variance.

After performing the calculations, the variance and standard deviation are as follows:

Variance ≈ 17417.61

Standard Deviation ≈ 131.96

The variance and standard deviation provide measures of how spread out the data points are from the mean. In this case, both the variance and standard deviation are relatively high, indicating a significant amount of variation in Big Mac prices across the different countries. The high values suggest that the prices are widely dispersed, with some countries having much higher or lower prices compared to the average.

Learn more about standard deviation here:

https://brainly.com/question/13498201

#SPJ11

The p-value is less than the level of significance of 0.05, we reject the null hypothesis and conclude that there is a significant relationship between X and Y. Hence, the answer is (e) p-value < 0.05.

The regression equation of the dependent variable (Y) on the independent variable (X) for the given set of data is Yˆ= 18.5 - 3.5X. Here Yˆ is the estimated value of Y. To determine the p-value, we must perform a hypothesis test of the significance of the regression.

The formula to calculate the p-value is: p-value = P (t > ) + P (t < -) where  is the calculated value of the test statistic t, which is given as follows: t = b1 / sb1 where b1 is the estimated value of the slope coefficient β1 and sb1 is the standard error of the estimated slope coefficient.

To know more about value visit:

https://brainly.com/question/30145972

#SPJ11

Answer:

A

Step-by-step explanation:

The relative frequency is solved and the table of values is plotted

Given data ,

The lunch order is given by the 2 sets of dishes as

A = { Sandwich , Pastas }

Now , the sports activities are given by 2 sets as

B = { Volleyball , Swimming }

From the table of values , we get

The relative frequency is solved as

Relative Frequency = Subgroup frequency / Total frequency

The percentage of Swimming ( sandwich ) = 26/36

Swimming ( sandwich ) = 72 %

And , the percentage of Swimming ( pasta ) = 10/36

Swimming ( pasta ) = 28 %

Now , the percentage of total sandwich = 45/70 = 64 %

And , the percentage of total pasta = 25/70 = 36 %

Hence , the relative frequency is solved

To learn more about relative frequency click :

https://brainly.com/question/29739263

#SPJ1

Answer:

b6 2hich method

Step-by-step explanation:

I solv3 this

Number of boys in Mandy’s science class is 5.

Now, According to the question:

The ratio of boys to girls in Mandy’s mathematics class is 3 to 12.

This ratio is the same in Mandy’s science class,

There are 20 girls.

To find the how many boys are there in Mandy’s science class?

Based on the given condition:

Let the ratio be 3x and 12x

Now, According to the statement:

12x = 20

x = 20/12

x = 5/3

So, Number of boys = 3 × 5/3 = 5

Learn more about Ratio at:

https://brainly.com/question/13419413

#SPJ4

The time it takes for Mrs. Jardine to bake more cookies compared to Mrs. How is of 6 hours.

The linear functions in this problem are defined in the slope-intercept format, as follows:

y = mx + b.

In which:

Miss Hoy can bake two dozen cookies every four hours. Mrs. Jardine can bake one dozen cookies every one hour, then the slopes are given as follows:

Assuming Mrs. Hoy gets a 36 cookie head start, the functions are given as follows:

Mrs. Jardine will have baked more cookies when:

12x > 6x + 36

6x > 36

x > 36/6

x > 6 hours.

Hence after 6 hours.

More can be learned about linear functions at https://brainly.com/question/24808124

#SPJ1

Given the following function:

f(x) = 3x - 3

Let's determine the value at f(-3),

This means that we will be replacing all x variables of f(x) by -3.

We get,

f(x) = 3x - 3

f(-3) = 3(-3) - 3

= -9 - 3

f(-3) = -12

Therefore, f(-3) = -12

Given the following function:

f(x) = 3x - 3

Let's determine the value at f(-3),

This means that we will be replacing all x variables of f(x) by -3.

We get,

f(x) = 3x - 3

f(-3) = 3(-3) - 3

= -9 - 3

f(-3) = -12

Therefore, f(-3) = -12

Answer:

96 x .50 = 48.

48 / 4 = 12.

Each person made $12

Step-by-step explanation:

Answer: Each person made $12

Step-by-step explanation: To find out how much Evan and their friend made overall, multiply 96 (the number of units sold) by 0.50 (the amount each unit sold for).

96 * 0.50 = 48

The total amount made must be split four ways, so divide the total amount by four.

48 / 4 = 12

Thus, each person made $12.