Can someone help me please

Answer:

Step-by-step explanation:

(5 + 2)/2 = 7/2

(-8 + 9)/2= 1/2

(7/2, 1/2) the midpoint

Since we don't know the sample size, we can't calculate the exact value of the upper limit.

To find the 95% confidence interval for the concentration of CO in this sample,

Use the formula

CI = X ± (Zα/2)(σ/√n)

where,

X is the sample mean (85 ppm)

Zα/2 is the critical value from the standard normal distribution,

which can be found using a table or calculator (for a 95% confidence interval, Zα/2 = 1.96)

σ is the standard deviation of the population (8 ppm)

n is the sample size (which we don't know, but assume to be large enough for the central limit theorem to apply)

Put in these values, we get,

⇒ CI = 85 ± (1.96)(8/√n)

To find the upper limit of the confidence interval,

we just need to add the second term to the sample mean,

Upper Limit = 85 + (1.96)(8/√n)

Since we don't know the sample size,

we can't calculate the exact value of the upper limit.

Therefore, we can say that with 95% confidence, the true concentration of CO in the sample lies somewhere between the lower and upper limits of the confidence interval.

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Answer:

= 6 over 23 (or = 6/23

Step-by-step explanation:

Convert mixed numbers to improper fractions 3 5/6 = 23/6

Convert element to fraction

= 1 divide 23/6

Apply the fraction rule: a/b divide c/d = a/b x d/c

= 1 over 1 (or 1/1) divide 23/6

Apply rule a/a = 1

= 1 over 1 (or 1/1) x 6/23

Multiply 1x 6/23 = 6/23

= 1 x 6/23

ANSWER 6/23

Hope this helps!

Answer:

D) (0,1) (2,3) (4,5)

Step-by-step explanation:

Explanation

Given Points are  A(0,1) , B(2,3) , C(4,5)

slope of the AB

                  \(= \frac{y_{2} -y_{1} }{x_{2}-x_{1} } = \frac{3-1}{2-0} =\frac{2}{2} =1\)

Slope of BC

                \(= \frac{y_{2} -y_{1} }{x_{2}-x_{1} } = \frac{5-3}{4-2} =\frac{2}{2} =1\)

Therefore slope of AB and BC are equal

The three points lie on same straight line

The three points are collinear points

To evaluate the given integral by changing to polar coordinates, we first need to express the limits of integration in polar coordinates. We have:

The semicircle x = 81 - y^2 can be expressed in polar coordinates as r cos(theta) = 81 - r^2 sin^2(theta), or r = 9 cos(theta).

The y-axis corresponds to theta = pi/2.

The origin corresponds to r = 0.

Therefore, the limits of integration in polar coordinates are:

theta from 0 to pi/2 (because we only need to integrate over the upper half of the semicircle).

r from 0 to 9 cos(theta) (because at each value of theta, r ranges from 0 to the radius of the semicircle at that angle).

Next, we need to express the integrand in terms of polar coordinates. We have:

x^2 + y^2 = r^2 (because we are in polar coordinates).

e^(-x^2 - y^2) = e^(-r^2) (because x^2 + y^2 = r^2).

Therefore, the integrand becomes:

e^(-x^2 - y^2) dA = e^(-r^2) r dr theta

Putting everything together, we have:

The integral to be evaluated is: ʃ(0 to pi/2) ʃ(0 to 9 cos(theta)) e^(-r^2) r dr dtheta.

We can evaluate this integral using the substitution u = r^2, du = 2r dr, to get:

ʃ(0 to pi/2) ʃ(0 to 81 cos^2(theta)) e^(-u) du dtheta/2

The integral over u can be evaluated as -e^(-u) evaluated from u=0 to u=81 cos^2(theta), which gives 1 - e^(-81cos^2(theta)).

Integrating this expression with respect to theta from 0 to pi/2 gives:

(1/2) (1 - e^(-81)).

Therefore, the value of the given integral is (1/2) (1 - e^(-81)).

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A single person, with no dependents, who made $150,000 last year is eligible to use a 1040EZ form when filing a federal income tax return.

A federal income tax return is a document that individuals, businesses, and other entities file with the United States government to report their income and calculate the amount of federal income tax that they owe.

Individuals typically file a federal income tax return annually using a form such as Form 1040 or Form 1040EZ, which includes information about their income, deductions, and tax credits.

We have,

The 1040EZ form is the simplest federal income tax form, and it can only be used by individuals who meet certain requirements.

These requirements include:

Filing as single or married filing jointly

Having no dependents

Being under the age of 65

Having taxable income below $100,000

Having only W-2 wages, salaries, and tips (no self-employment income, alimony, etc.)

Not claiming any adjustments to income or tax credits

Based on these requirements,

The only option listed that is eligible to use the 1040EZ form is a single person with no dependents who made $150,000 last year, assuming all other criteria are met.

Thus,

A single person, with no dependents, who made $150,000 last year is eligible to use a 1040EZ form when filing a federal income tax return.

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Answer:35x + 1.5

Step-by-step explanation:

Answer:

Point 1: (0,7)

Point 2: (1,5)

Point 3: (2,3)

I have graphed and plotted the points on the graph,

Hope this helps!

The polynomial function f(x) = -4x⁵ + 15x⁴ - 17x³ + 6x² - 7x + 11 has a maximum of 2 positive real zeros and a maximum of 0 negative real zeros.

To determine the possible number of positive real zeros and negative real zeros of the polynomial function f(x) = -4x⁵ + 15x⁴ - 17x³ + 6x² - 7x + 11, we need to examine the signs of the coefficients.

For the positive real zeros:

- Count the number of sign changes in the coefficients or the sign changes in f(x) when substituting -x for x.

- The maximum number of positive real zeros is equal to the number of sign changes or less by an even number.

For the negative real zeros:

- Count the number of sign changes in the coefficients of f(-x) or f(x) when substituting -x for x.

- The maximum number of negative real zeros is equal to the number of sign changes or less by an even number.

Let's analyze the coefficients of the polynomial function: -4, 15, -17, 6, -7, 11

For the positive real zeros, there are 2 sign changes from negative to positive:

-4, 15, -17, 6, -7, 11

So, the maximum number of positive real zeros is 2 or less by an even number.

For the negative real zeros, there are no sign changes from positive to negative:

4, 15, 17, 6, 7, 11

Therefore, the maximum number of negative real zeros is 0.

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You can write this as an equation:

Because the numbers are consecutive they are apart by one.

x + (x + 1) + (x + 2)

These are the three numbers

x + (x + 1) + (x + 2) = 2022

3x + 3 = 2022

3x = 2019

x = 673

673 is the first number

Answer: 5x = 35 x 10-2. = 3.5 x 10-1. 3.5 x 10-¹. The exponent tells how many times 5 is multiplied to itself. Multiply the numbers and add the exponents.

Step-by-step explanation:

ZERO. Write the equation so one side of the equation is zero. ...

FACTOR. Factor the expression.

PROPERTY. Set each factor equal to zero and solve. ...

Check by substituting solutions into the original equation.

Answer:

-4, 0, 3, 5

Step-by-step explanation:

The number line is being counted by ones. So when it's complete, it would be like this:

-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6

Hope this helps!!

Answer: -4, 0, 3, 5.

Step-by-step explanation:

Answer:

A. definition of perpendicular bisector

Step-by-step explanation:

Answer: \(14.07\ m\)

Step-by-step explanation:

Given

Max is driving at a speed of \(42\ mph\)

It took him three-quarters of a second i.e. \(0.75\ s\)

Speed in meter per second is \(18.77\ m/s\)

Distance is given by

\(d=v\times t\)

Reaction distance is

\(d=18.77\times 0.75=14.07\ m\)

Answer:

1/3000

Step-by-step explanation:

3 meters to centimeters:

3 × 100 = 300

= 1/10 ÷ 300

= 1/10/300

= 1/(10×300)

= 1/3000

Answer:

x=16

Step-by-step explanation:

3*4=12

4*4=16

Answer:

x = 2

Step-by-step explanation:

Given the price the stickers can be sold for, and the cost in total of the stickers, you can make profit.

The total revenue that can be made on the sale of the 600 stickers that you got, would be:

= ( Number of stickers in total / Number of stockers per pack ) x Price per sticker pack

= 600 / 10 x 2

= 60 x 2

= $ 120

Your profit would be:

= Total revenue from stickers - total cost

= 120 - 26. 97

= $ 93. 03

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Answer:

(2 - a) (x² - y)

Step-by-step explanation:

2x² + ay - ax² - 2y

=> 2x² - 2y + ay - ax²

=> 2 (x² - y) + -a (-y + x²)

=> 2 (x² - y) + -a (x² - y)

=> (2 - a) (x² - y)

If the vectors are 4i-6j and -i-5j then the angle between both the vectors is approximately 45°.

Given two vectors be  4i-6j and -i-5j.

We are required to find the angle between vectors  4i-6j and -i-5j.

A vector is basically an equation involving a linear combination of vctors with possibly unkown coefficients. Vector is basically a quantity that has both magnitude and direction but not possition.

Angle is basically measure of inclination of something with the surface.

The angles between two vectors can be find out by the following formula:

cos Θ=[dot product of both the vectors/(product of magnitude of both the vectors)

cos Θ=[4*(-1)+(-6)*(-5)]/\(\sqrt{4^{2} +(-6)^{2} } *\sqrt{(-1)^{2} +(-5)^{2} }\)

cos Θ=(-4+30)/\(\sqrt{52}\sqrt{26}\)

cos Θ=26/\(\sqrt{1352}\)

cos Θ=26/26.77

cos Θ=0.7070

Θ=\(cos^{-1}\)(0.707)

Θ=45.008

Approximately 45°.

Hence if the vectors are 4i-6j and -i-5j then the angle between both the vectors is approximately 45°.

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Answer:

See below

Step-by-step explanation:

I hope you wrote down the right equation using a minus sign instead of a plus.

Rounding 96.26 off to just 96  and then rounding 62.74 off to 62, you can subtract the two in your head real quick.

96 - 62 = 34

So using this estimation you can see that the answer of 159 is no where near correct.

The area of the rectangle ABCD is approximately 29.15 square units.

To find the area of the rectangle ABCD, we can use the formula for the area of a rectangle, which is given by the product of its length and width.

Let's first find the length and width of the rectangle using the coordinates of its vertices.

Length AB = distance between points A and B

= √[(x₂ - x₁)² + (y₂ - y₁)²]

= √[(1 - (-4))² + (4 - 4)²]

= √[5² + 0²]

= √25

= 5

Width BC = distance between points B and C

= √[(x₂ - x₁)² + (y₂ - y₁)²]

= √[(-4 - 1)² + (1 - 4)²]

= √[(-5)² + (-3)²]

= √[25 + 9]

= √34

Now that we have the length and width, we can calculate the area of the rectangle.

Area = Length × Width

= 5 × √34

≈ 5 × 5.83

≈ 29.15 square units

Therefore, the area of the rectangle ABCD is approximately 29.15 square units.

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Answer:

the first one is 3

the second one is 7

the third one is -2

and the last one is -3

Step-by-step explanation:

The equation is matched with its solutions below;

1/4x + 5/3x - 4 = 2 - 1/12x

combine like terms

1/4x + 5/3x + 1/12x = 2 + 4

(3x+20x+x) / 12 = 6

24/12x = 6

2x = 6

Divide both sides by 2

x = 6/2

x = 3

3.2b - 4.7 = 3b - 3.3

combine like terms

3.2b - 3b = -3.3 + 4.7

0.2b = 1.4

divide both sides by 0.2

b = 1.4 / 0.2

b = 7

4.6y - y + 4 = y - 1.2

combine like terms

4.6y - y - y = - 1.2 - 4

2.6y = - 5.2

divide both sides by 2.6

y = -5.2 / 2.6

y = -2

7.5c - 2.5c + 8 = - 7

5c = -7 - 8

5c = -15

divide both sides by 5

c = -15/5

c = -3

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Nine hundred Fifty-Six and three hundreths

900 + 50 + 6 + 3/100

956.03

900+ 50+ 6+ .03

we will solve as follows:

Since you have basic knowledge of computer hardware, an action which you should take as an ethical employee include the following: A. Initiate help by offering to check the computer.

A computer hardware can be defined as a physical component of a computer system or an information technology (IT) that can be seen, touched and replaced.

In Computer technology, there are various examples of a computer hardware and these include the following:

Based on ethical principles, we can reasonably infer and logically conclude that an ethical employee should initiate help by offering to help check the colleague’s computer since he or she has basic knowledge of computer hardware.

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Answer:

(2, -1)

Step-by-step explanation:

This can easily be solved by graphing the inequality. Then plot the points. The point that is in the shaded area can be a solution.