What is the simplified expression for
44.4°?
49
40
41
42
43

Using it's concept, it is found that there is a 0.45 = 45% experimental probability of the coin landing on tails.

A probability is given by the number of desired outcomes divided by the number of total outcomes.

For an experimental probability, these number of outcomes are taken from previous trials.

In this problem, 9 out of 20 trials resulted in tails, hence the experimental probability is given by:

p = 9/20 = 0.45 = 45%.

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Answer:

B: M,P,O,N,Q

Step-by-step explanation:

Sowy if i am wrong pls don't go hard on me.

Answer:

b

Step-by-step explanation:

took the test

Answer:

49t²r³

Step-by-step explanation:

Hello!

6r is multiplied by 7r³ to get to 42r^4. To keep a fraction proprtional, both numerator and denominator must be multiplied by the same amount.

We have to multiply 7t² by 7r³ to find the missing value.

Multiply:

The missing value is 49t²r³

Answer:

1,962.5

Step-by-step explanation:

r=d/2

50 / 2 = 25

25 = r

A= πr²

3.14 x 25²=1,962.5

[tex]Hope[/tex]  [tex]this[/tex]  [tex]helps![/tex]

Answer:

4/3 πr^3

= 4/3π (6)^3

therefore the answer is C

Answer:

a) Low: 45 Q1=80 Q2=89 Q3=94 High=100 b) Look at attached image

Step-by-step explanation:

Organized numbers: 45,70,72|,80,|82,85,88|,89,|90,92,92|,94,|98,100,100

mark medians

Graph created in Desmos

Answer:

Step-by-step explanation:

ok, so this is an infinitly repeating function, so you can write it as:

sqrt(12-x)

Although, x is also equal to sqrt(12-x), so

x = sqrt(12-x), and

x^2 = 12-x

x^2-12+x = 0

now just apply the quadratic formula and you're good

hope i helped :D

Answer:

56. In the Vector Addition Lab, Anna starts at the classroom door and walks:

2.0 meters, West

12.0 meters, North,

31.0 meters, West,

8.0 meters, South

3.0 meters, East

Using either a scaled diagram or a calculator, determine the magnitude and direction of Anna's resulting displacement.

Answer: 30.3 meters, 172 degrees

To insure the most accurate solution, this problem is best solved using a calculator and trigonometric principles. The first step is to determine the sum of all the horizontal (east-west) displacements and the sum of all the vertical (north-south) displacements.

Horizontal: 2.0 meters, West + 31.0 meters, West + 3.0 meters, East = 30.0 meters, West

Vertical: 12.0 meters, North + 8.0 meters, South = 4.0 meters, North

The series of five displacements is equivalent to two displacements of 30 meters, West and 4 meters, North. The resultant of these two displacements can be found using the Pythagorean theorem (for the magnitude) and the tangent function (for the direction). A non-scaled sketch is useful for visualizing the situation.

Applying the Pythagorean theorem leads to the magnitude of the resultant (R).

R2 = (30.0 m)2 + (4.0 m)2 = 916 m2

R = Sqrt(916 m2)

R = 30.3 meters

The angle theta in the diagram above can be found using the tangent function.

tangent(theta) = opposite/adjacent = (4.0 m) / (30.0 m)

tangent(theta) = 0.1333

theta = invtan(0.1333)

theta = 7.59 degrees

This angle theta is the angle between west and the resultant. Directions of vectors are expressed as the counterclockwise angle of rotation relative to east. So the direction is 7.59 degrees short of 180 degrees. That is, the direction is ~172 degrees.

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57. In a grocery store, a shopper walks 36.7 feet down an aisle. She then turns left and walks 17.0 feet straight ahead. Finally, she turns right and walks 8.2 feet to a final destination. (a) Determine the magnitude of the overall displacement. (b) Determine the direction of the displacement vector relative to the original line of motion.

Answer: (a) 48.0 feet; (b) 21 degrees from the original line of motion

This problem is best approached using a diagram of the physical situation. The three displacements are shown in the diagram below on the left. Since the three displacements could be done in any order without effecting the resulting displacement, these three legs of the trip are conveniently rearranged in the diagram below on the right.

Now it is obvious from the diagram on the right that the three displacement vectors are equivalent to two perpendicular displacement vectors of 44.9 feet and 17 feet. These two vectors can be added together and the resultant can be drawn from the starting location to the final location. A sketch is shown below.

Since these displacement vectors are at right angles to each other, the magnitude of the resultant can be determined using the Pythagorean theorem. The work is shown below.

R2 = (44.9 ft)2 + (17.0 ft)2 = 2305 ft2

R = Sqrt(2305 ft2)

R = 48.0 feet

The angle theta in the diagram above can be found using the tangent function.

tangent(theta) = opposite/adjacent = (17.0 ft) / (44.9 ft)

tangent(theta) = 0.3786

theta = invtan(0.3786)

theta = 20.7 degrees

This is the angle which the resultant makes with the original line of motion (the 36.7 ft displacement vector).

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58. A hiker hikes 12.4 km, south. The hiker then makes a turn towards the southeast and finishes at the final destination. The overall displacement of the two-legged trip is 19.7 km at 309 degrees . Determine the magnitude and direction of the second leg of the trip.

Answer: 12.7 km, 347 degrees

Like the previous problem (and most other problems in physics), this problem is best approached using a diagram. The first displacement is due South and the resulting displacement (at 309 degrees) is somewhere in the fourth quadrant. (It is in the fourth quadrant because 309 degrees lies between 270 degrees or due South and 360 degrees or due East.) For communication sake, we will refer to the first displacement as A and the second displacement as B. Note that A + B = R. Since the magnitude and direction of the resultant is known, the x- and y-components can be determined using trigonometric functions. Since the angle of 309 degrees is expressed as a counterclockwise angle of rotation with due East, it can be used as the Theta in the equation.

Rx = R•cos(theta) = 19.7 km • cos(309 deg) = 12.398 km

Ry = R•sin(theta) = 19.7 km • sin(309 deg) = -15.310 km (the "-" means South)

Whatever the magnitude and direction of B is, it must add on to vector A in order to give a southward displacement of 15.310 km and a eastward displacement of 12.398 km. This could be expressed by mathematical equations as

Answer: 78

Step-by-step explanation:

Area=b x h
13 x 6 =78

Answer:

78 m

Step-by-step explanation:

The formula to find the area of a rectangle or square = length * Height

A = L * H

In this scenario, the length is 6 and the height is 13

So the area (A) = 6 * 13 = 78

And don't forget your units ;)

Answer:

1,3,4

Step-by-step explanation:

ıf we rearrange formula we can obtain

p=nrt/v

t=pv/nr

v=nrt/p

r=pv/nt

The product of the expressions (3 – 5i) and (–2 + 4i) is 14 + 2i. Then the correct option is A.

It is also known as the product. If the object n is given to m times then we just simply multiply them.

The expressions are (3 – 5i) and (–2 + 4i).

Then the product of the expressions will be

(3 – 5i)(–2 + 4i)

–6 –10i + 12i –20i²

We know that i² = –1, then we have

–6 + 2i –20 (–1)

–6 + 2i + 20

14 + 2i

More about the multiplication link is given below.

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Answer: B- 14+22i

Step-by-step explanation: edge 2023

Answer:

4x(squared)-36

Step-by-step explanation:

=(2x+−6)(2x+6)

=(2x)(2x)+(2x)(6)+(−6)(2x)+(−6)(6)

=4x^2+12x−12x−36

=4x^2 −36

Answer:

  24 cm²

Step-by-step explanation:

You can show your sister how to use the formula for the area of a triangle.

The base dimension is substituted for the letter b, the height is substituted for the letter h, and then the arithmetic is carried out.

  A = 1/2bh

  A = (1/2)(12)(4) = (6)(4) = 24 . . . . square centimeters

Answer:

7x+12y ≤ 600

7x+12y = 600

Step-by-step explanation:

Lets first call cars x and minivans y. Since they want to raise 600, you can do the sign ≤ and 600

≤ 600

Since it is $7 per car, we can do 7x.

Since it is $12 per minivan, we can do 12y.

Together, they have to add up to 600 or more.

7x+12y ≤ 600

If you provide some options, I might be able to give a better answer. Without options, I can't tell if they want an exact answer or not. So technically, the answer could also be:

7x+12y = 600

The 98 percent confidence interval for the mean hours spent on personal tasks for 25-44 years olds will be (3.97, 4.11).

From the complete information, it should be noted that the mean is 4.04, the standard deviation is 0.81 and the number is 708.

Since the sample size is large, so the z-critical will be used. In this case, the critical value is 2.33.

The 98% confidence interval will be:

= 4.04 + 2.33(0.81/✓768)

= 4.11

Also, 4.04 - 2.33(0.81/✓768)

= 3.97

Therefore, the 98% confidence interval is (3.97, 4.11).

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Answer:

x=6

Step-by-step explanation:

Create equivalent expressions in the equation that all have equal bases, then solve for x.

Answer:

if you play 3 games and the total cost equals to 42
then just do 42 divided by 3 which is 14 so that should be your answer!

Step-by-step explanation:

im very sorry if i get it wrong im only trying to help
so i hope its correct

Answer:

see image.

Step-by-step explanation:

Since this is a subtraction problem remember to 'add the opposite' So change to addition between the two sets of parenthesis and change all the signs/operations in the second term.

Then combine like terms. This means the terms can only be added or subtracted if the have exactly the same variables and exponents. See image.

Answer:

A. Whatever that is in the parenthesis should be solve first.

Answer:

A is the correct option you should always solve the bracket first if you know about BIDMAS

B- BRACKET

I- INDICES

D- DIVISION

M- MULTIPLICATION

A- ADDITION

S- SUBTRACTION

Answer:

22 is the perimeter.

Step-by-step explanation:

You find the perimeter by adding up all of the sides of a shape. 9 + 9 = 18. 18 + 4 = 22.

Answer:

D

Step-by-step explanation:

When multiplying numbers with the same base but different exponents, add the exponents together.

Answer:

your family

Step-by-step explanation:

1,900/2 = 950

2,700/3 = 900

your family travels 950 miles every day whereas their family travels 900 miles every day :)

Overtime Hours Worked A random sample of 15 registered nurses in a large hospital showed that they worked on average 44. 2 hours per week. we can estimate with 90% confidence that the population mean of overtime hours worked by registered nurses in the hospital is between 42.5 and 45.9 hours per week.

The t-distribution is a probability distribution that is used to estimate the population mean of a normally distributed variable when the sample size is small or the population standard deviation is unknown.

To estimate the population mean with a 90% confidence interval, we can use a t-distribution with n-1 degrees of freedom, where n is the sample size.

First, we need to calculate the standard error of the mean, which measures the variability of sample means around the population mean. The formula for the standard error of the mean is:

SE = s / sqrt(n)

where s is the sample standard deviation and n is the sample size.

In this case, s = 2.6 and n = 15, so:

SE = 2.6 / sqrt(15) = 0.671

Next, we need to find the critical value of the t-distribution with 14 degrees of freedom and a 90% confidence level.

We can look this up in a t-table or use a calculator to find that the critical value is approximately 1.761.

Finally, we can calculate the confidence interval using the formula:

CI = X ± tα/2 * SE

where X is the sample mean, tα/2 is the critical value of the t-distribution, and SE is the standard error of the mean.

In this case, X = 44.2 and tα/2 = 1.761, so:

CI = 44.2 ± 1.761 * 0.671

CI = (42.5, 45.9)

Therefore, we can estimate with 90% confidence that the population mean of overtime hours worked by registered nurses in the hospital is between 42.5 and 45.9 hours per week.

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Answer:

874

rem = 4.

Step-by-step explanation:

4374/ 5

= 874 remainder 4

Answer:

x=3 and x= -3

Step-by-step explanation:

Sorry for my handwriting I know it's not the best but I hope it helps

Answer:

x=-1.13389341903

Step-by-step explanation:

square root of 63=7.93725393319

÷-7=-1.13389341903

this should be the answer

Answer:

Quotient: 6

Remainder: None

Step-by-step explanation:

24 divided by 4 is 6.

Solving them, it is found that the equivalent equations are given as follows: 2 + x = 5, x + 1 = 4, -5 + x = -2.

Equivalent equations are equations that have the same solution.

In this problem, the equations and their solutions are given as follows.

Hence the equivalent equations are: 2 + x = 5, x + 1 = 4, -5 + x = -2.

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Using a system of equations, it is found that:

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

You buy 4 health bars and 3 health drinks for $10, hence:

4x + 3y = 10.

Your friend buys 6 health bars and 2 health drinks for $10, hence:

6x + 2y = 10

2y = 10 - 6x

y = 5 - 3x.

Replacing on the first equation:

4x + 3y = 10

4x + 3(5 - 3x) = 10

-5x = -5

5x = 5

x = 1

Then:

y = 5 - 3x = 5 - 3 = 2.

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