Need help will give brainliest and 5 stars for quick answers! I have 20 minutes to do this!

Need Help Will Give Brainliest And 5 Stars For Quick Answers! I Have 20 Minutes To Do This!

Answers

Answer 1

Answer:

Step-by-step explanation:

(n-2) x 180 = 1260

n-2 = 1260/180

n-2 = 7

n = 9

Therefore, the regular polygon has 9 sides.


Related Questions

which radian measure is equivalent to 300°?
• 5/3
• 11pi/6
• 5pi/6
• 5pi/3​

Answers

The radian measure that is equivalent to 300° is equal to 5π/3. So, correct option is D.

To convert degrees to radians, we use the conversion factor of π/180, which means that one degree is equal to π/180 radians. Therefore, to convert 300° to radians, we multiply 300 by π/180:

300° * π/180 = 5π/3

To understand this conversion, we need to remember that radians are a unit of measurement for angles, just like degrees. However, while degrees divide a circle into 360 equal parts, radians divide a circle into 2π equal parts. One full rotation is equal to 2π radians, which is also equal to 360°.

Since 5π/3 radians is less than one full rotation, it represents an angle that is less than 360°. In fact, 5π/3 radians is equivalent to 300°, which is a well-known angle used in many contexts, such as in geometry, trigonometry, and physics.

In summary, to convert 300° to radians, we multiply it by the conversion factor π/180, which gives us the equivalent angle measure of 5π/3 radians.

So, correct option is D.

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Determine the interval(s) for which the function shown below is increasing.

Answers

Answer:

Step-by-step explanation:

When x≥2 the function is increasing.  you read the graph from left to right

Can also be written [-2, +∞)

2. If you know the correlation coefficient between two tests is +.79, you expect a person who gets a
high score on one of the tests to get a _____score on the other test.

Answers

Answer:

"high" should go in the blank. A correlation coefficient of .79 indicates a pretty strong positive correlation.

The equation y = 400x represents the relationship between x, the time that a plane flies in hours, and y, the distance the plane flies in miles for Plane A. The table represents the relationship for Plane B. Find the slope of the graph for each plane and the plane's rate of speed. Determine which plane is flying at a faster rate of speed.

Answers

The slope of line is 400 and plane A's rate of speed is 400 mi/h

The slope of line is 475 and plane B's rate of speed is 475 mi/h

Therefore, Plane B is flying faster.

For Plane A the equation y = 400x represents the relationship between x, the time that a plane flies in hours, and y, the distance the plane flies in miles.

We know the equation of line is y =mx + c

m = slope of line

So, on comparing slope of line is 400 and plane A's rate of speed is 400 mi/h

For Plane B

We know the formula for slope = (y₂-y1)/(x₂ - x₁)

= (950 - 475)/(2 - 1)

= 475

So, slope of line is 475 and plane B's rate of speed is 475 mi/h

Therefore, Plane B is flying faster.

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Michelle has four credit cards with the balances and interest rates listed below. She would like to consolidate all of her credit cards in a single credit card with an interest rate of 16% and pay off the balance in 36 months. If she did so, what would Michelle’s monthly credit card payment be?

Credit Card
Balance
APR
#1
$4,380
17%
#2
$1,365
19%
#3
$2,480
23%
#4
$5,000
15%
a.
$367.36
b.
$464.95
c.
$685.23
d.
$826.56

Answers

Answer:

mark me brilliant

Step-by-step explanation:

To calculate Michelle’s monthly credit card payment, we need to find the total amount she owes and then divide it by the number of months she has to pay it off.

First, we need to find the total balance on Michelle’s credit cards:

$4,380 + $1,365 + $2,480 + $5,000 = $13,225

Next, we need to find the weighted average interest rate of her credit cards. To do this, we multiply each balance by its corresponding APR and add up the results. Then we divide by the total balance:

($4,380 x 0.17) + ($1,365 x 0.19) + ($2,480 x 0.23) + ($5,000 x 0.15) = $1,038.55

$1,038.55 ÷ $13,225 = 0.0785, or 7.85%

Now we can use the total balance and the weighted average interest rate to calculate Michelle’s monthly payment using the formula for a fixed payment on a loan:

P = (r(PV)) / (1 - (1 + r)^-n)

Where:

P = monthly payment

r = monthly interest rate (as a decimal)

PV = present value of the loan

n = number of payments

r = 0.16 ÷ 12 = 0.01333 (monthly interest rate)

PV = $13,225

n = 36

P = (0.01333(13,225)) / (1 - (1 + 0.01333)^-36) = $367.36

Therefore, Michelle’s monthly credit card payment would be $367.36 if she consolidated all of her credit card debt into a single credit card with an interest rate of 16% and paid it off in 36 months. The answer is (a) $367.36.

In a survey conducted by a website, employers were asked if they had ever sent an employee home because they were dressed inappropriately. A total of 2765 employers responded to the survey, with 964 saying that they had sent an employee home for inappropriate attire. In a press release, the website makes the claim that more than one-third of employers have sent an employee home to change clothes.
A button hyperlink to the SALT program that reads: Use SALT.
Do the sample data provide convincing evidence in support of this claim? Test the relevant hypotheses using
= 0.05.
For purposes of this exercise, assume that it is reasonable to regard the sample as representative of employers in the United States. (Round your test statistic to two decimal places and your P-value to four decimal places.)
z =
P-value =

Answers

To test the claim that more than one-third of employers have sent an employee home for inappropriate attire, we can use a one-sample proportion test. Let p be the true proportion of all employers who have sent an employee home for inappropriate attire. The null hypothesis is that p <= 1/3, and the alternative hypothesis is that p > 1/3.

Using the sample data, the proportion of employers who have sent an employee home for inappropriate attire is:

p-hat = 964/2765 = 0.3493

The sample size is sufficiently large (n = 2765) to assume that the sampling distribution of p-hat is approximately normal.

The test statistic is:

z = (p-hat - p0) / sqrt(p0*(1-p0)/n) = (0.3493 - 1/3) / sqrt((1/3)*(2/3)/2765) = 2.58

Using a one-sided test with a significance level of 0.05, the critical value is 1.645. Since the test statistic (z = 2.58) is greater than the critical value (1.645), we reject the null hypothesis and conclude that there is evidence to support the claim that more than one-third of employers have sent an employee home for inappropriate attire.

The P-value for the test is P(Z > 2.58) = 0.0049. This means that the probability of observing a sample proportion of 0.3493 or more extreme, assuming the null hypothesis is true, is 0.0049. Since this P-value is less than the significance level of 0.05, we reject the null hypothesis and conclude that there is evidence to support the claim that more than one-third of employers have sent an employee home for inappropriate attire.

2c – 4 = 3(4 – 2c) c = –4a + 9 = –2(4 + 5a) – 7 a =

Answers

Answer:

c=7/2, a = 5/34

Step-by-step explanation:

find an equation of a parabola with a vertex at the origin and directrix y=-1.5.

x=-1/6y^2
x=1/6y^2
y=-1/6x^2
y=1/6x^2

Answers

Step-by-step explanation:

We know that the vertex of the parabola is at the origin, so the equation must have the form:

y = a x^2

where a is a constant.

We also know that the directrix is y = -1.5, which means that the focus is located at (0, 1.5).

Using the formula for the distance between a point (x, y) and a line ax + by + c = 0, which is given by:

d = |ax + by + c| / sqrt(a^2 + b^2)

we can find the value of a. The distance from the vertex (0, 0) to the directrix y = -1.5 is equal to the distance from the vertex to the focus (0, 1.5), so we have:

d = |y - (-1.5)| / sqrt(1^2 + 0^2) = sqrt(x^2 + (y - 1.5)^2) / sqrt(0^2 + 1^2)

Simplifying this equation, we get:

sqrt(x^2 + (y - 1.5)^2) = |y + 1.5|

Squaring both sides, we get:

x^2 + (y - 1.5)^2 = (y + 1.5)^2

Expanding and simplifying, we get:

x^2 = 3y

So the equation of the parabola with vertex at the origin and directrix y = -1.5 is:

y = (1/3)x^2

Therefore, the correct answer is: y = (1/3)x^2.

Calculate the area of the red triangle to find the area of the garden. Show your work. (2 points)

Answers

Using a metric standard of 2 meters, then the area of the red triangle would be 54m². The area of the garden would be; 500m²

Using typical walkway widths to 6 ft, to calculate the area the red triangle to be 486 square feet and the area of the garden to be about 4400 square feet, rounding up.

Then it is a right triangle and side a is the altitude or height of the triangle and side b is the base.  

The measurements of the triangle are approximately in the proportion of 3, 4, 5, a typical "Pythagorean Triple" right triangle.

Estimating from rough measurements of the triangle and the dimensions of the garden as shown, the area of the garden is about 18 times the area of the red triangle.

The area of the triangle is half the area of a rectangle with the same side lengths a & b, therefore, 9 ab is a good estimate of the area of the garden.

Area of the triangle estimate:

A = 36ft × 27ft /2

A = 486 square feet

To estimate 2 meter wide sidewalk, the area of the triangle can be reasonably calculated to be;

A = 9m × 12m /2 = 54 m²

The area of the garden = 9 × 54 = 486m²

Then rounded reasonably to 500m²

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matt had 4/6 bag of peanuts. He ate a quarter of what was in the bag. How much of a full bag of peanuts did Matt eat?

Answers

Matt ate 1/6 of the bag of peanut


How to calculate the amount of peanut that matt ate?

Matt had 4/6 bag of peanut

He ate a quarter of what was in the bag

The amount of peanut he ate can be calculated as follows

= 4/6 × 1/4

= 4/24

= 1/6

Hence Matt ate 1/6 of the bag of peanut

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Find the value of x.
a. 53°
b. 72°
c. 48°
d. 39°

Answers

Answer:

Step-by-step explanation:

yes it is b

The number of students earning master's degrees in mathe
g(x) = 7x² -226x + 4941, where x represents the number o
mathematics or statistics in that country in 2009.

Answers

The number of students earning master’s degrees in mathematics or statistics in the country in 2009 was 4474.

We are given that;

g(x) = 7x² -226x + 4941

Now,

To find the number of students in 2009, we need to plug in x = 9 into the function g(x), since 2009 is 9 years after 2000.

g(9) = 7(9)² -226(9) + 4941

g(9) = 7(81) -2034 + 4941

g(9) = 567 -2034 + 4941

g(9) = 4474

Therefore, according to the function g(x) the answer will be 4474.

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what is the ss total if ss is between 164 and within 70.2

Answers

The value of ss total while ss between is 164 and ss within is 70.2 is given by 234.2.

We know that the sum of square in total is equal to the sum of sum of square in between and sum of squares within.

In mathematical word, ss (total) = ss (between) + ss (within)

Here given that the ss (between) is given by = 164

and ss (within) is given by = 70.2

So the ss(total) is given by,

ss(total) = ss(between) + ss(within) = 164 + 70.2 = 234.2.

Hence the required value of ss total is 234.2.

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9) Find the 10th term in the
sequence.
9) 2, 4, 12, 48, 240, ...
A) a
5828046
a 10
B) a = 3765310
10
C) a = 4678865
10
D) a = 7257600
10

Answers

The 10th term of the sequence is 7,257,600. Option D.

Arithmetic sequence

To find the 10th term in the sequence, we can use the pattern to generate the next terms:

The first term is 2.

To get the second term, we multiply the first term by 2: 2 × 2 = 4.To get the third term, we multiply the second term by 3: 4 × 3 = 12.To get the fourth term, we multiply the third term by 4: 12 × 4 = 48.To get the fifth term, we multiply the fourth term by 5: 48 × 5 = 240.

Therefore, to get the 10th term, we can multiply the fifth term by 6, then by 7, then by 8, and then by 9:

5th term = 2406th term = 240 × 6 = 14407th term = 1440 × 7 = 100808th term = 10080 × 8 = 806409th term = 80640 × 9 = 72576010th term = 725760 × 10 = 7257600

Therefore, the 10th term in the sequence is 7,257,600.

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Find P(A')) if P(A) =0.64

Answers

If P(A) is 0.64, then P(A') is 0.36. P(A) is probability of occurrence of event A.

This question pertains to Probability principles. Probability is a measure of the possibility of an event occurring. Many occurrences cannot be foreseen with absolute accuracy. We can only anticipate the likelihood of an event occurring using it.

A is an occurrence in this context. A' denotes the event's complement.  

For example, if Event A is getting heads on a coin toss, then Event A' is getting tails.

This demonstrates one thing:

A ∪ A' = U, here U is the universal set.

P ( U) = 1

P (A) + P(A') = 1

0.64 + P (A') = 1

P(A') = 1 - 0.64

P (A') = 0.36

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* Required Problem Set 1 A swimming pool has 150 gallons of water in it. It fills up at a constant rate of 30 gallons every 2 hours. The initial value is 30 gallons every 2 hours * O True O False ​

Answers

False. The initial value is 0 gallons every 2 hours because the pool already has 150 gallons of water in it.

What is the distance between the coordinates (2, 9) and (10, 6)? Round your
answer to the nearest tenth.
Answer here
<>
SUBM

Answers

Answer:

8.54

Step-by-step explanation:

√(6-9)²+(10-2)2

=√(-3)²+8²

=√9+64

=√73=8.54

The answer is 8.54

What is the decimal equivalent of 7/12? A. 0.583 B. 0.58 C. 0.583 D. 5.83
who ever answers the question right i will make them a brainlest

Answers

Answer:

c

Step-by-step explanation:

I hope it help :)

Can anyone tell me this worksheet and how to do it? Btw whenever I divide, I will have to turn it into a fraction and if the fraction isn’t simplified I will have to simplify it to a good looking fraction. Example: 0.75/1.25 would be 3/5in, scale drawing goes on top, actual goes on bottom. Remember you have to do proportional set up. it’s like that.

Answers

The scale factor of the given images above is as follows:

1.) 5/3

2.) 7/10

3.) 7/3

4.) 3/2

How to determine the scale factors of the given images?

For image 1.), the image was scaled down.

scale factor = original image dimensions/scale drawing

= 1.25/0.75

proportional set up = 125/75 = 5/3

For image 2.) the image was scaled up.

scale factor = Bigger dimensions/smaller dimensions

= 3.5/2

proportional set up = 35/20 = 7/10

For image 3.) the image was scaled down.

scale factor = original image dimensions/scale drawing

= 1.75/0.75

proportional set up = 175/75 = 7/3

For image 4.) the image was scaled up.

scale factor = Bigger dimensions/smaller dimensions

= 6/4 = 3/2

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The table represents a quadratic function C(t).


t C(t)
−2 1
−1 4
0 5
1 4
2 1

What is the equation of C(t)?
C(t) = −(x − 5)2
C(t) = (x − 5)2
C(t) = −x2 + 5
C(t) = x2 + 5

g(x) = (x − 4)2 − 3
g(x) = (x − 4)2 + 3
g(x) = (x + 4)2 − 3
g(x) = (x + 4)2 + 3

Answers

From the given table, the equation of C(t) is  - t² + 5. that is option C

How to determine the equation of the parabola?

The standard form is (x - h)² = 4p (y - k), where the focus is (h, k + p) and the directrix is y = k - p.

Let the point (h, k) be the vertex of the parabola and a be the leading coefficient.

Then the equation of the parabola will be given as,

y = a(x - h)² + k

The table represents a quadratic function C(t).

t          C(t)

−2           1

−1           4

0           5

1           4

2            1

From the table, the coordinate of the vertex will be at (0, 5). Then the equation is given as,

C(t) = a(t - 0)² + 5

C(t) = at² + 5

The equation is passing through the point (1, 4), then we have

4 = a (1²) + 5

4 = a + 5

a = - 1

The equation that presents the table will be C(t) = - t² + 5. Then the correct option is C.

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answerrrrrrrrrrr teh questionnnnnnnn

Answers

The linear function with a slope of 1/2 and passing through the point (4, -2) is given as follows:

y = x/2 - 4.

How to define a linear function?

The slope-intercept representation of a linear function is given by the equation shown as follows:

y = mx + b

The coefficients m and b have the meaning presented as follows:

m is the slope of the function, representing the increase/decrease in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, representing the numeric value of the function when the input variable x has a value of 0. On a graph, it is the value of y when the graph of the function crosses or touches the y-axis.

The gradient of the function is given as follows:

m = 1/2.

Hence:

y = x/2 + b.

When x = 4, y = -2, hence the intercept b is obtained as follows:

-2 = 4/2 + b

2 + b = -2

b = -4.

Hence the equation is:

y = x/2 - 4.

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Represent "the product of 3 and a number" algebraically Use n to represent "a number". DO NOT USE ANY SPACES! Use only +,-,*,/ for operation symbols

Answers

Answer:

The product of 3 and a number can be represented as:

[tex]3n[/tex]

pls help me with this

Answers

The expression of the perimeter of the triangle is  15h - 6k + 12m.

How to find the perimeter of a triangle?

A triangle is a polygon with three sides. The sum of angles in a triangle is 180 degrees.

The perimeter of a triangle is the sum of the whole three sides of the triangle.

Therefore, let's find the perimeter of the triangle with side length (5h - 4k), (10h + 7m) and  (5m - 2k).

Therefore,

perimeter of a triangle = 5h - 4k + 10h + 7m + 5m - 2k

collect like terms

perimeter of a triangle = 5h + 10h - 4k - 2k + 7m + 5m

Therefore,

perimeter of a triangle = 15h - 6k + 12m

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For questions 23, use a Venn diagram or truth table or common form of an argument to decide whether each argument is valid or invalid.

23. If a person is on this reality show, they must be self-absorbed. Laura is not self-absorbed. Therefore, Laura cannot be on this reality show.

Answers

In the Venn diagram , the statement is Valid.

What is Venn diagram?

Venn diagrams are frequently used in mathematics, statistics, logic, teaching, linguistics, computer science, and business. They are also known as Set diagrams or Logic diagrams.

Here according to the Venn diagram , if person is  on the reality show , they must be self absorbed. But Laure is not self absorbed so she cannot be on the reality show.

Hence the statement is valid.

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Calculate the area of the shaded region for the given figure.

Answers

The area of the shaded region of the given figure would be = 47.1.

How to calculate the area of the shaded figure?

To calculate the area of the shaded figure, the formula of the area of a sector of a circle is used such as;

area of sector = ∅/360πr²

∅ = 40°

r = 12

area = 40/360 × 3.14× 12×12

= 18086.4/360

= 50.24

Area of the unshaded portion

radius = 12-9 = 3

area = 40/360×3.14×3×3

= 1130.4/360

= 3.14

Therefore area of the shaded portion;

= 50.24- 3.14

= 47.1

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4. A spinner is divided into four colored sections. that are not of equal size: red blue purple and orange. The arrow on the spinner is spun several times. SPINNER RESULTS Color Number of Times Red 15 Blue 24 Purple Orange 12 B. 9 The arrow on the spinner will be spun one more time. Based on these results, what is the probability that the arrow will land on the purple section? C. 27 D. 1/2​

Answers

To find the probability of the arrow landing on the purple section, we need to know the total number of spins. From the given results, we can see that the arrow has been spun a total of:

15 + 24 + 12 + 9 = 60 times

Out of these 60 spins, we know that the arrow landed on the purple section 9 times. Therefore, the probability of the arrow landing on the purple section can be calculated as:

P(purple) = number of times the arrow landed on purple / total number of spins
= 9 / 60
= 3 / 20

Therefore, the probability of the arrow landing on the purple section is 3/20. Answer: B.

Does anyone know this answer??

Answers

Step-by-step explanation:

This question uses trigonometry, a subject you may have learnt. Using the functions sin, cos, tan and the abbreviation SOHCAHTOA, you'll need to use sin to find your answer.

sin = opposite/hypotenuse

sin 25  = 112/d

d = 112/sin 25

d = 238.5661004

Answer: 238.6 metres

Find the equation of a line parallel to −5x+y=−4that passes through the point (−7,−9).

Answers

The equation of the line is parallel to -5x+y=-4 and passes through the point (−7,−9) is y=5x+26.

Given that, the equation of the line is parallel to -5x+y=-4 and passes through the point (−7,−9).

The given equation can be written as y=5x-4.

Now, compare y=5x-4 with y=mx+c, we m=5

The slope of a line parallel to given line is m1=m2

So, the slope of the line parallel to the given line is 5.

Now, substitute m=5 and (x, y)=(-7, -9) in y=mx+c, we get

-9=5(-7)+c

c=-9+35

c=26

So, the equation is y=5x+26

Therefore, the equation of the line is parallel to -5x+y=-4 and passes through the point (−7,−9) is y=5x+26.

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Mary is traveling cross country on a road trip. So far, Mary has traveled 200 miles in her car and 200 miles by train. The car traveled at a rate that was 30 miles per hour slower than the train.

Mary modeled the total time for her trip with the following expression.

What does x - 30 represent in this situation?

Answers

Answer:

The answer to your problem is, x-30 is speed of the car.

Step-by-step explanation:

Let the object is moving n miles in one hour.

Let the speed is m miles per hour.

We know that our friend Mary has traveled 200 miles in her car and 200 miles by train. And shown Mary also modeled the total time for her trip;

[tex]\frac{200}{x}[/tex] + [tex]\frac{200}{x-30}[/tex]

The car that was given had traveled at a rate that was 30 miles per hour slower than the train.

speed of the train is x miles per hour

speed of the car = x - 30 miles per hour.

Thus the answer to your problem is, x-30 is speed of the car.

A pack of 12 pens cost $3.25 what is the cost of one pen

Answers

Therefore, using simple division, the price of one pen is calculated to be around $0.27.

Describe Division.

In mathematics, division is the process of dividing an integer into equal pieces or groups. It performs multiplication in the other direction. To obtain the quotient or outcome in division, an even number has been divided by another integer, known as the divisor.

We must divide the total expense of the 12-pen pack by the quantity of pens in the box in order to figure out the price of one pen:

Price of one pen is equal to the sum of the pack's pen costs divided by the number of markers in the pack.

In this instance, we may substitute these values as we are aware that the set of 12 pens costs $3.25.

In this instance, we may enter the following values into the calculation as we are aware that the set of 12 markers costs $3.25:

One pen costs $3.25 divided by 12

Long division or using a calculator, we obtain:

One pen costs $0.27.

Consequently, the price of a pen is roughly $0.27.

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Particle Physics: What type of particle detector uses supersaturated gas, that when a charged particle passes through, causes the gas to condense, leaving a track of the particle? This type of detector was famously used to first detect the positron and muon? Which statements describe Georgia's local governments? Check all that apply.O Home rule allows local governments to amend local laws.Local governments must receive state approval for changing laws.Border changes can be completed with citizen approval.O Federal laws can be changed with local government approval.O Local governments are not required to follow the state constitution. an electric scooter is offered at 21% off the manufacturer's suggested retail price of $220. Find the discount and the sale price of the scooter. Please show work If cot (x - 10) = tan (4x), a possible value of xisa.b.C.d.10203040 Why did Greg's whole grade perform poorly on the school test?A. Students began getting sick from the snacks Rowley had shared at lunchtime.B. The sprinkler system malfunctioned.C. A squirrel climbed through an open window and ran in and out of classrooms.D. A kid let the stress lizard out of its case. Please hurry!The figure shows a 1175-yard-long sand beach and an oil platform in the ocean. The angle made with the platform from one end of the beach is 82and from the other end is 75Find the distance of the oil platform, to the nearest tenth of a yard, from each end of the beach. In a study of 796 randomly selected medical malpractice lawsuits, it was found that 501 of them were dropped or dismissed. Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed.What is the test statistic?z=___(Round to two decimal places as needed.) How do you think were the Kakatiyas able to gain control over the chiefs? What is the total profit received from the top four brands, by units sold, by carey's extreme sports? The position of a lieutenant governor in a state is comparable to that of which position in the federal government? Solve: log(2x - 4) - log(x + 2) = 1 Which of the following is a type of data in an enterprise system? multiple choice organizational data optimization data minor data main data In seals, the gene for the length of the whiskers has two alleles. The dominant allele (A) codes long whiskers and the recessive allele (a) codes for short whiskers. What percentage of offspring would be expected to have short whiskers from the cross of two long whiskered seals, one that is homozygous dominant and one that is heterozygous? DEFUNCT AIRLINES: The Simpsons perfectly satirized this former behemoth's longstanding sponsorship of Walt Disney World, including attractions at Epcot Center. This Miami-based airline, once headed by Eddie Rickenbacker, ceased operations in 1991? 1. Calculate the distance between P1 and P2 using the(x x) + ( Y).-P1(2,1)distance formulaP2(5,7)d= in the marketing research process, marketers should examine alternative solutions before making a recommendation. group of answer choices true false jackson inc. has decided to use an r-chart to monitor the changes in the variability of their 78.00 pound galvanized pipes. the production manager randomly samples 7 galvanized pipes and measures the weight of the sample (in pounds) at 18 successive time periods. what is the center line of the control chart? round your answer to three decimal places. How long does it typically take for deeper aquifers to recharge? A steel tube, which is closed at both ends, is filled with air. Theair in the tube is vibrating at a frequency of 40 Hz, fundamentalwavelength in a closed tube is 4 times the length of thetube, how long is the tube?(Use 330 m/s for the speed of sound in air?a 4.8mb 1.2mc 0.6md 9.6m what are the kidney stones made from, and what are the cuases and treatments?