please Answer this for me:

Answer:

Yes, that's true.

Step-by-step explanation:

For example: triangle 5-12-13 is scalene and right.

Hope this helps.

The appropriate z-value to use in the situation given in the question is 1.28.

Given,Total number of adults in the sample = 2092

Number of adults using the internet = 1318

Number of internet users who expect businesses to have websites that give product information = 1041

Probability of internet users who expect businesses to have websites that give product information as per the teacher's statement = 80% = 0.8

To find the appropriate z-value to use in this situation, we need to calculate the standard error of proportion, which is given by:

SEp = √[p(1-p)/n]

where p is the proportion of internet users who expect businesses to have websites that give product information and n is the sample size.

Substituting the given values in the formula,

SEp = √[(1041/1318)(1-1041/1318)/1318]SEp = 0.019

z-value is given by:

z = (p - P)/SEp

where P is the proportion of internet users who expect businesses to have websites that give product information as per the teacher's statement.

Substituting the given values in the formula,

z = (0.8 - 1041/1318)/0.019

z = - 1.28

The appropriate z-value to use in this situation is -1.28.

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Answer:

-11 and -5

Step-by-step explanation:

-11 x -5 = 55, and add to -16

Answer:

20

Step-by-step explanation:

3 × 5 is 15

4 × 5 is 20

So...should be 20.

Answer:

Explanation:

Here, we want to write the equation of the quadratic function

We have the general form as:

from the question, we have the horizontal intercepts at t= 3 and t =4

that means (t-3) is a factor and also (t-4) is another root of the equation

The product of these two is as follows:

Finally, we need to find the value of a

We can do this by making a substitution

We substitute 1 for t and -3 on the other side of the equation

Mathematically, we have this as:

Thus, we have the equation as:

Answer: 5

Step-by-step explanation: Assuming you put a for X that would be 2 so 2x is 4 + 1= 5

Answer:

vertex = (- 1, 1 )

Step-by-step explanation:

Given a parabola in standard form

y = ax² + bx + c ( a ≠ 0 )

Then the x- coordinate of the vertex is

x = - \(\frac{b}{2a}\)

y = x² + 2x + 2 ← is in standard form

with a = 1 and b = 2 , then

x = - \(\frac{2}{2}\) = - 1

substitute x = - 1 into the equation for y- coordinate of vertex

y = (- 1)² + 2(- 1) + 2 = 1 - 2 + 2 = 1

vertex = (- 1, 1 )

To construct a 98 percent confidence interval for the difference in proportions, we need to calculate the sample proportions and the standard error of the difference. First, let p1 be the proportion of cell phone users with a headset who missed their exit, and p2 be the proportion of those talking to a passenger who missed their exit.

Step 1: Identify the proportions.
- Proportion of cell phone users with a headset who missed their exit (p1): 15/24
- Proportion of cell phone users talking to a passenger who missed their exit (p2): 6/24

Step 2: Calculate the difference in proportions (p1 - p2).
- (15/24) - (6/24) = 9/24 = 0.375

Step 3: Calculate the standard error (SE) for the difference in proportions.
- SE = √[(p1 * (1 - p1) / n1) + (p2 * (1 - p2) / n2)]
- SE = √[((15/24) * (1 - 15/24) / 24) + ((6/24) * (1 - 6/24) / 24)] = √(0.01042) = 0.102

Step 4: Find the critical value (z-score) for a 98% confidence interval.
- Using a z-table or calculator, the z-score for a 98% confidence interval is approximately 2.33.

Step 5: Calculate the margin of error (ME).
- ME = z-score * SE
- ME = 2.33 * 0.102 ≈ 0.238

Step 6: Construct the 98% confidence interval.
- Lower limit: (p1 - p2) - ME = 0.375 - 0.238 ≈ 0.137
- Upper limit: (p1 - p2) + ME = 0.375 + 0.238 ≈ 0.613

The 98% confidence interval for the difference in proportions is approximately (0.137, 0.613). This means we can be 98% confident that the true difference in the proportion of cell phone users with a headset who missed their exit and those talking to a passenger who missed their exit falls within this interval.

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Answer: straight to the point the answer is {t| 0<t<14}

Step-by-step explanation:

The law of cosines indicates that the player with the larger angle from their of standing point to the goal posts and therefore, with the greater chance of making a shot is Alyssa

The law of cosines state that the square of the length of a side of a triangle, a², is equivalent to the sum of the squares of the lengths of the other two sides of the triangle, b² + c², less twice the product the other two sides and the cosine of the angle between them, A.

Mathematicaly; a² = b² + c² - 2·b·c·cos(A)

The player with a wider view of the goal post has a greater chance to make a shot.

Let A represent the angle formed by the linear distances from Alyssa to the two goal posts, and let N represent the angle formed from Nari to the two goal posts, the law of cosines indicates that we get;

12² = 20² + 25² - 2 × 20 × 25 × cos(A)

2 × 20 × 25 × cos(A) = (20² + 25²) - 12²

cos(A) = ((20² + 25²) - 12²)/(2 × 20 × 25) = 0.881

A = arcos(0.881) ≈ 28.24°

Similarly; 12² = 45² + 38² - 2 × 45 × 38 × cos(B)

2 × 45 × 38 × cos(A) = (45² + 38²) - 12²

cos(B) = ((45² + 38²) - 12²)/(2 × 45 × 38) ≈ 0.972

B ≈ arcos(0.972) ≈13.54°

The larger angle Alyssa has indicates that Alyssa has a greater chance to make a shot.

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Nominal, ordinal, interval, and ratio are measurement scales used in statistics to categorize and rank data.

Nominal, ordinal, interval, and ratio are four sorts of information estimation scales utilized in measurements.

Nominal scales are utilized to mark or classify information into particular gatherings, where each gathering is fundamentally unrelated and altogether comprehensive. Instances of ostensible information incorporate orientation, race, and occupation.

Ordinal scales include positioning information in a particular request, however the distinctions between values are not significant. Instances of ordinal information incorporate positioning motion pictures in view of their prominence or understudy execution on a test.

interval scales include positioning information in a particular request, however the distinctions between values are significant, and there is no obvious zero point. Instances of stretch information incorporate temperature, intelligence level scores, and time.

ratio scales are like span scales, however they have a genuine zero point, implying that values can be duplicated and partitioned. Instances of proportion information incorporate weight, level, and pay.

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The complete question is:

what is the nominal, ordinal, interval and ratio?

Answer:

Step-by-step explanation:

make the question clearer homie urs makes no sense

Step-by-step explanation:

First find how many plants Samantha can plant in half an hour. To figure that out do 12 divided by 3 because in 1.5 hours she can plant 12 plants.

12÷3=4

Samantha can plant 4 plants in half an hour. Since 2.5 hours in 1 more hour than 1.5 hours multiply 4 by 2 to get the total amount she can plant in one hour.

4 x 2 = 8

Samantha can plant 8 plants in an hour. Now add 8 to 12 because 12 plants is 1.5 hours and 8 plants is 1 hour and 1.5 + 1 = 2.5 hours.

8 + 12 = 20.

Samantha can plant 20 plants in 2.5 hours.

For the given equation which shows the relation of temperature in Celsius and Fahrenheit, the correct option is Option D.

What is meant by temperature?

Indicating the direction in which heat energy will naturally flow from a hotter body (one with a higher temperature) to a colder body(one at a lower temperature), the temperature is a measure of hotness or coldness defined in terms of any of several arbitrary scales.

The given equation is:

\(C = \frac{5}{9} (F- 32)\)

where C = temperature in Celsius

          F = temperature in Fahrenheit

The above equation can be rewritten as:

C = 5/9F - 160/9

Now, this is an equation of a straight line with a formula,

y = mx + c

Comparing,

m = 5/9 which is the slope of the equation.

This means that for a temperature increase of 1 degree Fahrenheit, the equivalent increase in temperature in Celsius is 5/9.

So the option I is true.

Similarly, an increase in 1 degree Celsius of temperature is equivalent to 9/5 = 1.8 degree increase in Fahrenheit.

So option II is true.

Option III is not true as is discussed above.

Therefore for the given equation of temperature, the correct option is Option D.

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Answer:

D

Step-by-step explanation:

I have nothing else to say- lol

The values of a and b that make f(x) continuous everywhere are a = 2x and b = 2a - 3/2 = 2(2x) - 3/2 = 4x - 3/2.

The limit is a concept in mathematics that describes the behavior of a function near a particular value, called the limit point. The limit of a function gives the value that the function approaches as the input (variable) approaches the limit point.

For f(x) to be continuous everywhere, the function must have the same value and the same limit as x approaches 2 from the left and the right. In other words, f(2-) = f(2+) and the limit of f(x) as x approaches 2 from the left and the right must be equal.

Let's start by finding f(2-), which is the value of f(x) as x approaches 2 from the left. In this case, f(x) = (x2 - 4)/(x - 2) for x < 2, so as x approaches 2 from the left, f(x) approaches (2^2 - 4)/(2 - 2) = 0.

Next, let's find f(2+), which is the value of f(x) as x approaches 2 from the right. In this case, f(x) = ax^2 - bx + 3 for 2 <= x < 3, so as x approaches 2 from the right, f(x) approaches a(2^2) - b(2) + 3 = 4a - 2b + 3.

Since f(x) must be continuous at x = 2, we need to have f(2-) = f(2+), so we can set f(2-) = f(2+) and solve for a and b:

0 = 4a - 2b + 3

2b = 4a - 3

b = 2a - 3/2

Now that we have an expression for b in terms of a, we can substitute b = 2a - 3/2 into the expression for f(x) for x >= 3 to find the value of a that makes f(x) continuous everywhere:

f(x) = 2x - a + b for x >= 3

f(x) = 2x - a + (2a - 3/2) for x >= 3

f(x) = 2x + 3/2 - a for x >= 3

Since f(x) must be continuous at x = 2, we need to have f(2+) = f(2+), so we can set f(2+) = f(2+) and solve for a:

4a - 2b + 3 = 2x + 3/2 - a for x >= 3

4a - 2(2a - 3/2) + 3 = 2x + 3/2 - a

4a - 4a + 3 + 3/2 = 2x + 3/2 - a

3/2 = 2x + 3/2 - a

a = 2x

So, the values of a and b that make f(x) continuous everywhere are a = 2x and b = 2a - 3/2 = 2(2x) - 3/2 = 4x - 3/2.

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The required area of the polygons is given as 100 ft², 9 ft², 16 ft², and 64 ft².

Given that,
The dimensions of this polygon are shown in feet (ft). 10ft/3ft/4 ft/8 ft. The area, in square feet, of the polygon is to be determined.

A polygon is defined as a geometric shape that is composed of 3 or more sides these sides are equal in length, and an equal measure of angle at the vertex,

Examples of polygons, equilateral triangles, squares, pentagons etc

Here,
Assumed that all the polygons are square,
The area of the square is given as (side)².
1,
Side = 10 ft
Area of the square = [10 ft]² = 100 ft²

Similarly,
For side 3 areas is 9 ft²,

For side 4 areas is 16 ft²,

For side 8 areas is 64 ft²,

Thus, the required area of the polygons is given as 100 ft², 9 ft², 16 ft², and 64 ft².

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Answer:

2n - 9 = 17

Step-by-step explanation:

We can allow n to represent the number.  Twice the number can be represented by 2n.

Difference refers to subtraction and since we're told that it's the difference between twice the number and 9, we know that 9 is being subtracted form the number, which is how we get 2n - 9 = 17 and not 9 - 2n = 17.

You can see that the expression works by simply solving for n and looking back at the expression:

2n - 9 = 17

2n = 26

n = 13

The number is 13 and 13 twice is 26

The difference between 26 and 9 is 17

Answer:

96

Step-by-step explanation:

Let the gladiolas Mr Haas has be x

We know that Mrs Albert has 3 times as many gladiolas as Mr. Haas, so Mrs Albert has:

3x gladiolas

Together they have 128 gladiolas, so:

x + 3x = 128

4x = 128

x = 128/4

x = 32

Therefore Mr Haas has 32 gladiolas & if Mrs. Albert has 3 times more than him she has (32x3) = 96 gladiolas.

answered by g a u t h m a t h

Using the concept of area of rectangle, we can say that the actual cost of putting flooring is $624.72.

The area of the floor can be found by using the formula to find area of rectangle.

Area=Length × Width

Floor length = 6 feet

Floor breadth= 19 feet

Area of floor = length × width

Area of floor = 19 × 6

Area of floor = 114 square foot

The cost of flooring 114 square foot at the price of $5.48 can be found using the given formula,

Actual cost of putting flooring = area × price of flooring per square foot

Actual cost of putting flooring= 114 × 5.48

Actual cost of putting flooring= $624.72

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Answer:

(1,4)

Step-by-step explanation:

the Answer is: (x,y)=(1,4)

Answer: Go to ur profile and choose the tab that says which questions u have asked then you can edit ur response (a little pencil icon will be on the top right corner of ur question)

Step-by-step explanation:

info above.

The given equation is:

It is required to solve for x.

Distribute 6 into the expression in parentheses:

Add 12 to both sides of the equation:

Divide both sides of the equation by 6:

Hence, the correct answer is 3) x=2 2/3.

The correct option is 3.

The points (x, y, z), (1, 1, 0), and (1, 2, 1) lie on a plane through the origin, then the determinant is zero

Since the plane passes through the root, any two vectors on the plane must be directly autonomous. In this manner, we will utilize the vectors (1, 1, 0) and (1, 2, 1) to discover the condition of the plane.

A vector opposite to the plane can be found by taking the cross item of the two vectors:

(1, 1, 0) × (1, 2, 1) = (-1, 1, 1)

The condition of the plane can be composed as:

x + y + z = d

where d may be steady to be decided. We are able to utilize one of the focuses on the plane, such as (1, 1, 0), to discover d:

1 + 1 + = d

d = 0

In this manner, the condition of the plane is:

x + y + z = 0

 To check that the point (x, y, z) = (1, 2, 1) lies on this plane, we will substitute these values into the condition over   

  1 + 2 + 1 = 0

 which is genuine, so the point lies on the plane.

To discover the determinant that is zero, we will utilize the three focuses (x, y, z), (1, 1, 0), and (1, 2, 1) to make a 3x3 lattice:

| x y z |

| 1 1 0 |

| 1 2 1 |

Growing the determinant along the primary push, we get:

x | 1  0 |

| 2 1 | = x(1 - 0) - y(1 - 0) + z(2 - 1) = x - y + z

Subsequently, the determinant is:

x - y + z

Since these three focuses lie on a plane through the root, they fulfill the condition:

x + y + z = 0

 Substituting z = -x + y into the expression for the determinant over, we get:

x - y + (-x + y) = 0

 Streamlining, we get:  

 0=0  

 Subsequently, the determinant is zero, as anticipated. 

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Answer:

Where is the shape???

Step-by-step explanation:

Given:

The total number of marbles are 26.

Red marbles=10

Black marbles=8

Green marbles=8

The two marbles are drawn randomly,

To find the probability that both marbles are green,

The probability that first marbles chosen is green,

Condition is given that the first is not returned before the second one is drawn.

Now the we have 7 green marbles and total marbles are 25.

Probability is given by,

The total probability of getting both green marbles without replacement is,

Answer: Probability is 0.08615.