Please help (geometry) number 11

Answer:

30 m/s

Step-by-step explanation:

p = mv

momentum = mass × velocity

here the momentum is 60kgm/s

mass is 2kg

substitute in the equation

60 = 2v

v= 30m/s

Answer:

a is the perimeter which is given as 820 mm.

Step-by-step explanation:

Perimeter, P = 820 mm

Length is 100 m less than twice of width

let the length is x and the width is y.

So,

x = 2 y - 100

P = 2 (x + y)

820 = 2 (2y - 100 + y)

410 = 3 y - 100

3 y = 510

y = 170 mm

x = 2 x 170 - 100 = 240 mm

The equation is

2 x = 2 y = a

where, a is the perimeter which is given as 820 mm.

Option A is correct.

For testing, if x is a significant predictor of y in simple linear regression, we need to determine if the slope is significantly different from zero.

What is linear regression?

A statistical technique known as linear regression is used to represent the connection between a scalar answer and one or more explanatory factors. When there is just one explanatory variable, simple linear regression is employed; when there are numerous explanatory variables, multiple linear regression is utilized.

Based on the value of another variable, linear regression analysis makes predictions about the value of the first variable. The dependent variable is the one you're trying to forecast. The independent variable is the one you are utilizing to make a prediction about the value of the other variable.

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The probability of winning with 10 tickets in one raffle is 100 times greater than the probability of winning with one ticket in 10 different raffles. This means that buying 10 tickets in one raffle is the best way to maximize your chances of winning something.

Buying ten tickets in one raffle will give you a greater chance of winning the prize than buying one ticket in ten different raffles. In the first scenario, you have a 10% chance of winning the prize (10 tickets out of 100 total tickets). In the second scenario, your chances are only 1% (1 ticket out of 100 tickets in each raffle).

Mathematically, this can be expressed as the probability of winning with 10 tickets in one raffle (P1): P1 = 10/100 = 0.1

The probability of winning with one ticket in 10 different raffles (P2): P2 = (1/100)^10 = (0.01)^10 = 1/10,000 = 0.0001

Therefore, the probability of winning with 10 tickets in one raffle is 100 times greater than the probability of winning with one ticket in 10 different raffles. This means that buying 10 tickets in one raffle is the best way to maximize your chances of winning something.

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The vector (nu) x is an eigenvector of A and corresponds to each nonzero complex scalar (nu) (lambda).

Let x in Cn be an eigenvector of A that corresponds to an eigenvalue. Assume that A is a n x n matrix (lambda). Ax = (lambda)x follows.

Let (nu) now be a complex scalar that is nonzero. A((nu)x) = A((nu)x) = A((nu)x) = A((nu)x) = A((nu)x) = A((nu)x)

As a result, (nu)x is an eigenvector of A that corresponds to (nu) (lambda).

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A test statistic found to be statistically significant at the .05 level means that the probability of obtaining that result by chance alone is 5% or less.

If a test statistic has been found to be statistically significant at the .05 level, the probability of getting this result by chance alone is 5% or less.

1. When conducting hypothesis testing, a significance level (also known as alpha) is chosen, typically .05.
2. If the test statistic falls in the critical region, which is determined based on the significance level, we reject the null hypothesis.
3. The probability of obtaining a test statistic as extreme as the one observed, assuming the null hypothesis is true, is the p-value. If the p-value is less than the significance level, we reject the null hypothesis, indicating statistical significance.

In conclusion, a test statistic found to be statistically significant at the .05 level means that the probability of obtaining that result by chance alone is 5% or less.

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The distance between the boat 1 and boat 3 is 34 miles if the  distance between Boats 2 and 3 is 50 miles.

It is a triangle in which one of the angles is 90 degrees and the other two are sharp angles. The sides of a right-angled triangle are known as the hypotenuse, perpendicular, and base.

The distance between boat 2 and boat 3 = 50 miles

Let's suppose the point is A between the boat 2 and boat 3

Distance between boat 3 and point A = 50 - 20 = 30 miles

As we can see in the figure, it is a right angle triangle.

From the Pythagoras theorem

Distance between the boat 1 and boat 3 = √(30² + 16²) = 34 miles

Thus, the distance between the boat 1 and boat 3 is 34 miles if the  distance between Boats 2 and 3 is 50 miles.

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Answer:

Step-by-step explanation:

\(\frac{g}{f} (x)=\frac{g(x)}{f(x)} \\=\frac{3x^2+x}{4x} \\=\frac{x(3x+1)}{4x} \\=\frac{3x+1}{4}\)

Answer: A

Step-by-step explanation: using y= kx+ b, k is the slope which is 1/4 and b is the y intercept which is -5

Answer:

A

Step-by-step explanation:

using the standard form y = mx + b

m = slope

b = y intercept

so..

y = 1/4x + (-5)

which is also y = \(\frac{1}{4} x\) - 5

From given report, on average college women gain more weight than college men during their first year of college.

In this question, we ahve been given a study is conducted to show that college women, on average, gain more weight than college men during their first year of college.

The study is completed and reports a p-value of 0.001

We need to write the conclusion for above situation.

We can see that the results are statistically significant.

And from given p-value, we can say that on average college women gain more weight than college men during their first year of college.

Therefore, on average college women gain more weight than college men.

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The family-size package of ground beef that Maya's parents bought weighs a total of 6 pounds.

To determine the total weight of the family-size package of ground beef that Maya's parents bought, we need to find the weight of one portion and then multiply it by the total number of portions.

Given:

Weight of one portion = 0.25 pounds total weight of the family-size package of ground beef = Weight of one portion × Number of portions

= 0.25 pounds × 24

= 6 pounds

Therefore, the family-size package of ground beef that Maya's parents bought weighs a total of 6 pounds.

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The correct question is given below-

Maya's family is hosting an end-of-summer burger bash. Her parents buy a family-size package of ground beef, and Maya uses a scale to divide the meat evenly into 24 burger-size portions. Each portion weighs 0.25 pounds. How much does the package weigh?

Answer:

  -1/2

Step-by-step explanation:

Zeros of a polynomial function are its x-intercepts, the values of x that make the polynomial zero. Each zero x=p corresponds to a linear factor (x-p) of the polynomial.

A monic polynomial is one that has a leading coefficient of 1. For a monic polynomial of degree n, the coefficient of the term of degree n-1 is the opposite of the sum of all of the zeros. The constant term of any odd-degree monic polynomial is the opposite of the product of the zeros.

The given polynomial can be made monic by dividing by its leading coefficient:

  (2x^3 -x^2 -5x -2)/2 = x^3 -(1/2)x^2 -(5/2)x -1

The given polynomial has degree 3, so we're interested in the coefficient of the x^2 term. That coefficient is -1/2, so the sum of zeros will be ...

  sum of zeros = -(-1/2) = 1/2

If z represents the third zero, then we have the sum ...

  1/2 = -1 +2 +z

  z = -1/2 . . . . . . subtract 1 from both sides

The third zero is -1/2.

The given polynomial is of odd degree, so the product of the zeros is the opposite of the constant.

  (-1)(2)(z) = -(-1)

  z = 1/(-2) = -1/2 . . . . . divide by the coefficient of z

The third zero is -1/2.

Of course, a graph will show all of the (real) zeros. The attached graph from a graphing calculator shows the third zero is -1/2.

Using the hypergeometric distribution, it is found that there is a 0.1538 = 15.38% probability that the top three finishers in the contest will all be seniors.

The formula is:

\(P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}\)

\(C_{n,x} = \frac{n!}{x!(n-x)!}\)

The parameters are:

In this problem:

The probability that all of them are seniors is P(X = 3), hence:

\(P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}\)

\(P(X = 3) = h(3,14,3,8) = \frac{C_{8,3}C_{6,0}}{C_{14,3}} = 0.1538\)

0.1538 = 15.38% probability that the top three finishers in the contest will all be seniors.

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Answer:

initial amount is 130

decaying at 55%

Step-by-step explanation:

The expression for the number of cups of flour Cindy has left in the cupboard is y = 5 - c.

A finite combination of symbols that are well-formed in accordance with context-dependent principles is referred to as an expression or mathematical expression.

Let c be the number of cups of flour Cindy needs in her cupboard.

Let y be the number of cups of flour Cindy has left after making the brownies.

Now, the total number of cups in the cupboard is 5.

So, the expression for the total number of cups will be:

c + y = 5

Subtracting c from each side of the equation.

c + y - c = 5 - c

y = 5 - c

Therefore, the expression for the number of cups left is y = 5- c.

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Answer:

P - 5

Step-by-step explanation:

hello

original price is P

$5 discount means that the final price is P - 5

hope this helps

Answer:

p-5

Step-by-step explanation:

Some examples of equivalent fractions to -3/2 are:

-3/2 = -6/4

-3/2 = -15/10

To find an equivalent fraction to a fraction a/b, we need to multiply/divide both numerator and denominator by the same real number (except for zero).

Then for example if we have -3/2, we can multiply both numerator and denominator by 2, and we will get an equivalent fraction:

(-3*2)/(2*2) = -6/4

Or if we multiply both by 5:

(-3*5)/2*5 = -15/10

These are some examples of equivalent fractions.

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The expression which represents the total number of square yards of fabric she needs for both pillows is 3x + y = z

let

x = first pillow

y = second pillow

fabrics needed for first pillow = 3 yards

fabrics needed for second pillow = 1 yards

z = Total square yards needed

The equation:

3x + y = z

Therefore, the expression which represents the total number of square yards of fabric she needs for both pillows is 3x + y = z

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Answer:The expression which represents the total number of square yards of fabric she needs for both pillows is 3x + y = z

let

x = first pillow

y = second pillow

fabrics needed for first pillow = 3 yards

fabrics needed for second pillow = 1 yards

z = Total square yards needed

The equation:

3x + y = z

Therefore, the expression which represents the total number of square yards of fabric she needs for both pillows is 3x + y = z

Step-by-step explanation:

A rectangle is a four-sided geometric shape with opposite sides that are parallel and equal in length. The opposite sides are called the length and width of the rectangle. Area = (30m - 0.5m) x (40m - 0.5m) = 29.5m x 39.5m = \(1162.75 m^2\)

a. The maximum area of turf that Toby needs to buy can be found by using the measurements given by James, which are the length and width of the rectangle.

The area of a rectangle is found by multiplying its length and width, so the maximum area of turf needed would be:

Area = length x width = 30m x 40m = \(1200 m^2\)

b. The minimum area of turf that Toby needs to buy can also be found by using the measurements given by James, but this time taking into account the margin of error due to the measurements being given to the nearest metre.

If the true length and width of the rectangle are slightly less than the measurements given by James, the mini  mum area of turf needed would be:

Area = (30m - 0.5m) x (40m - 0.5m) = 29.5m x 39.5m = \(1162.75 m^2\)

So the minimum area of turf that Toby needs to buy would be \(1162.75 m^2\)and the maximum area of turf that Toby needs to buy would be \(1200 m^2.\)

In general, the measurements given by James could be off by half a meter in both directions, therefore the minimum area of turf that Toby needs to buy would be the area calculated by taking into account the margin of error, in this case, it's \(1162.75 m^2.\)

The maximum area of turf that Toby needs to buy would be the area calculated using the measurements given by James, which is \(1200 m^2.\)

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Answer:

25

Step-by-step explanation:

Answer:

x=25

Step-by-step explanation:

6x-30=4x+20

6x-30+30=4x+20+30

6x=4x+50

2x=50

x=25

When a hollow plastic ball is projected into the air, there is air resistance opposing its motion. The magnitude of the ball's acceleration is not equal to zero. At time t, the ball is moving up and to the right at a 45-degree angle to the horizontal.

The acceleration of the ball can be determined by considering the forces acting on it. Since there is air resistance opposing the ball's motion, its acceleration is less than the acceleration due to gravity (g). Therefore, the statement "a < g" best represents the magnitude and direction of the ball's acceleration at time t. This means that the ball's acceleration is directed downward but is smaller than the acceleration due to gravity. The presence of air resistance affects the ball's motion and causes its acceleration to be less than the acceleration due to gravity.

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I started by labeling the right angle (Angle C) 90º. Next, I wrote down everything in one equation.

2x + 90 + 3x - 20 = 180º (180 degrees in a triangle)

Next, I add 20 on both sides.

2x + 90 + 3x = 200º

I combine like terms (2x and 3x)

5x + 90 = 200º

I subtract 90 from both sides.

5x = 110º

Divide 110 by 5 to get x.

x = 22

======

For problem two, I label all the angles I know.

49º + 80º + r = 180º

I add 80 and 49.

129º + r = 180º

I subtract 180 and 129 and get 51º, which is your angle for R.

For angle X, you know that angle R plus angle X equals half of a circle, which is 180º

We know from before that 129º is 180º without R, so X is 129º

I hope this helps! Let me know if I'm wrong!

Hope it helps u

Have a good day

\( \bf \implies{m \angle{EHF} = 31 \degree}\)

\( \bigg( \bf \angle{DHE} \: and \: \angle{EHF} \: are \: \\ \bf{complementary \: angles} \bigg)\)

\({ \bf \longrightarrow{m \angle{EHF} = \: ? }}\)

We know that,

\( \bf \longrightarrow{6x - 1+ 3x + 1 = 90 \degree}\)

\( \bf \longrightarrow{6x \cancel{- 1} + 3x \cancel{+ 1 }= 90 \degree}\)

\( \bf \longrightarrow{6x + 3x = 90 \degree}\)

\( \bf \longrightarrow{9x = 90 \degree}\)

\( \bf \longrightarrow{x = \frac{ \cancel{90} \degree}{ \cancel{9}} }10 \degree\)

\( \bf \longrightarrow{x = 10 \degree}\)

\({ \bf \longrightarrow{m \angle{EHF} = \: 3 \times 10 \degree + 1 \mapsto31 \degree }}\)

\( \bf \longrightarrow{m \angle{EHF} = 31 \degree}\)

9514 1404 393

Answer:

Step-by-step explanation:

  \(\begin{array}{rccl}&-2(5x+8)=14+6x\\\text{Step 1:}&-10x-16=14+6x&\text{distribute}&\text{-2 to $5x$ and 8.}\\\text{Step 2:}&-16x-16=14&\text{subtract}&6x\\\text{Step 3:}&-16x=30&\text{add}&16\\\text{Step 4:}&x=\dfrac{30}{-16}&\text{divide by}&-16\end{array}\)

At each step after the first, we use one of the properties of equality to simplify the equation. In the first step, we use the distributive property to eliminate parentheses.

_____

Additional comment

Note that the first step could have been "divide by -2", which would result in the equation 5x+8 = -7 -3x. Subsequent steps would add 3x, subtract 8, and divide by 8, to give a result of x=-15/8. There is usually more than one way to work a math problem.

Answer: 168 hours

Step-by-step explanation:

There are 24 hours in a day.  Thus, simply multiply 7*24 to get 168.

Hi there! Hopefully this helps!

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Answer: There are 168 hours in 7 days.

Since there 24 hours in a day, Multiply 24 times 7 and you get 168.

Example : 24 x 7 = 168.

Lambda  is the proportional reduction in error-based measure of association for nominal data uses marginals to reduce prediction errors.

According to the statement

we have to find and explain about the term which is used in the proportional reduction in error-based measure of association for nominal data uses marginals to reduce prediction errors.

So, For this purpose, we know that the

Lambda is the calculate the error rate, divide the value of Errors by the value of Invocations .

And

Lambda calculus is a formal system in mathematical logic for expressing computation based on function abstraction and application using variable binding.

It is the term used in the nominal data to calculate the errors.

Lambda is the always proportional reduction in error-based measure of association for nominal data.

So, from all this it is clear that the Lambda  is the proportional reduction in error-based measure of association for nominal data uses marginals to reduce prediction errors.

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Answer:

c. 1 \(\frac{3}{8}\) inches

Step-by-step explanation:

Since the paper clip is past the 1, the answer will be 1 and ___.

the mark in the middle of the 1 and 2 is one half (1/2)

the mark in between the 1 and 1/2 is 1/4

the mark between 1/4 and 1/2 is 1/8

there are three (3) 1/8 marks where the paperclip is

3 * 1/8 = 3/8

so your answer is 1 3/8

hope this helps:)

The probability that at least one of three randomly selected people has been vaccinated in a large population where 64% of people have been vaccinated is 0.784.

The probability that at least one of three randomly selected people has been vaccinated in a large population where 64% of people have been vaccinated can be calculated using the binomial probability formula.

The binomial probability formula is used to calculate the probability of a given number of successes from a given number of trials when the probability of success is constant. In this case, the number of trials is 3 (i.e. the three randomly selected people) and the probability of success is 64% (i.e. the probability that each of the randomly selected people has been vaccinated).

To calculate the probability that at least one of the three randomly selected people has been vaccinated, we first calculate the probability of none of them having been vaccinated:
P(none) = (1 - 0.64)^3 = 0.216

Then, the probability of at least one of them having been vaccinated is 1 - P(none) = 1 - 0.216 = 0.784.

In conclusion, the probability that at least one of three randomly selected people has been vaccinated in a large population where 64% of people have been vaccinated is 0.784.

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