Please I need explanation and and and answer for just h and c don't just give me the answer I need the explanation please.

The original price of each sketchbook is $6

Mr. Olin bought 6 sketchbooks for the students in his art class.

If the sketchbooks cost $18 total before tax

Each sketchbook was on sale for $3 off

We need to calculate the original price of each sketch book.

If the sketchbooks cost $18 total before tax

Cost of each text book = total cost / number of sketchbooks

= 18/6 = 3

Cost of each sketch book is $3

Each sketchbook was on sale for $3 off

Cost price = original price = discount

3 = original price - 3

original price = 6

Therefore, the original price of each sketchbook is $6

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Answer:

D. 9

Step-by-step explanation:

here you go

this is what my teacher gave me...

please mark brainliest...

Answer:  f=15h+200

Step-by-step explanation:

h=hours
15$ and hour
mutiply hours and dollars add base pay
f for total money made :)

A recipe uses 5 cups of flour for every 2 cups of sugar. How much sugar is used for every cup of flour?

2/5 = 0.4

so there is 0.4 cups of sugar used for every one cup of flour.

This proves that the sum of 1/2n(n+1) + 1/2(n+1)(n+2) is always a square number.

When a number is multiplied by itself, the result is a square number. As an illustration, 25 is a square number as it is composed of 5 groups of 5, or 5 x 5. A square number, sometimes known as a perfect square, is an integer that is the square of another integer, or the result of multiplying another integer by itself. For instance, 9 is a square number as it equals 32 and is represented by the symbols 3.

Here,

Find the sum:

=1/2n(n+1) + 1/2(n+1)(n+2)

=1/2(n² + n) + 1/2(n² + 3n + 2)

=1/2(n² + n + n² + 3n + 2)

=1/2(2n² + 4n + 2)

=n² + 2n + 1

=(n + 1)²

This demonstrates that 1/2n(n+1) + 1/2(n+1)(n+2) is always a square number when added together.

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Answer:

see below

Step-by-step explanation:

= 9000 ( .7^2) ^t  = 9000 (.49)^t

Answer:

[tex]G(t)=9000(0.49)^{t}[/tex]

Step-by-step explanation:

Given function:

[tex]G(t)=9000(0.7)^{2t}[/tex]

[tex]\textsf{Apply exponent rule} \quad a^{bc}=(a^b)^c:[/tex]

[tex]\implies G(t)=9000(0.7^2)^{t}[/tex]

Simplify:

[tex]\implies G(t)=9000(0.49)^{t}[/tex]

The image of point (8,4) after translation is (-6,0).

What is image of a point?

A transformation where a point is moved across a certain line, called the line of reflection, to appear at an equal distance.

Main Body:

Given point is (8,4)

Translation in the point is left 2 units, down 4 units.

so left- right translation is done on x-axis where moving left means subtracting is while up - down translation is done on y- axis where moving down means subtracting.

Which means 2 units will be subtracted from x-axis and 4 units from y-axis

New point = (8-2 ,4-4)

                 = (6,0)

Image of point (6,0) according to y-axis will be (-6,0).

Hence image point is (-6,0)

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Answer:

below

Step-by-step explanation:

Domain is the set of all x values a function can have

 this one goes from    - inf to the asymtope at x = 2

(-∞, 2)     domain

range is the y values the function can have

   looks like 0   to - inf

(- ∞, 0]       ( but it COULD be  ( -∞, 0)    <===cannot tell from graph)

The probability that a randomly selected sample mean will be more than $100 = 0.14082.

We are given that according to a research​ institution, the average hotel price in a certain year was $97.00.

Assume the population standard deviation is $18.00 and that a random sample of 40 hotels was selected.

Here, Mean = μ = $97.00  and  Standard deviation = σ = $18 and  n = 40

(a) Standard error of the mean = σ/[tex]\sqrt{n}[/tex] = 18/[tex]\sqrt{40}[/tex] = 2.74

(b) Let X bar = Sample Mean

The z score probability distribution for sample mean is ;

          Z = Xbar-μ/ σ/[tex]\sqrt{n}[/tex] ~ N(0,1)

So, Probability that the sample mean will be less than $102 = P(X bar < $102)

P(X bar < 102) = P(Xbar-μ/ σ/[tex]\sqrt{n}[/tex] < 102 - 97.00/ 18/[tex]\sqrt{40}[/tex]) = P(Z < 0.74) = 0.7704

(c) Probability that the sample mean will be more than $104 =P(X bar > $104)

=  P(X bar > 104) = P(Xbar-μ/ σ/[tex]\sqrt{n}[/tex] < 104 - 97.00/ 18/[tex]\sqrt{40}[/tex]) = P(Z > 1.47) = 1 - P(Z <= 1.47)

= 1 - 0.92922 = 0.0708

(d) Probability that the sample mean will be between $99 and $100 is given by = P($99 < X bar < $100) = P(X bar < $100) - P(X bar <= $99)

= P(X bar < 100) = P(Xbar-μ/ σ/[tex]\sqrt{n}[/tex] < 100 - 97.00/ 18/[tex]\sqrt{40}[/tex]) = P(Z < 0.01) = 0.50399

= P(X bar <= 99) = P(Xbar-μ/ σ/[tex]\sqrt{n}[/tex] <= 99 - 97.00/ 18/[tex]\sqrt{40}[/tex]) = P(Z <= -0.35) = 1 - P(Z <= 0.35)

= 1 - 0.63683 = 0.36317

Therefore, P($99 < X bar < $100) = 0.50399 - 0.36317 = 0.14082 .

Hence the answer is the probability that a randomly selected sample mean will be more than $100 = 0.14082.

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The value of the expression is 1.64.

The number of times a number is multiplied by itself is referred to as an exponent.

The given expression is (8.2×10⁻³)×(2.0×10²).

Simplify the expression as follows:

(8.2×10⁻³)×(2.0×10²)

=16.4×10⁻³⁺²

= 16.4 × 10⁻¹

= 16.4 × 1/10

= 1.64

Hence, the value of the expression is 1.64.

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The measurement closest to the side of this sign is 15 inch.

Area of Square is a², where 'a' is the length of a side of a square.

The Area of square is 219 in²,

Therefore, a²=219

Adding square roots to both sides..

√a² = √219

a = 14.798

    =15 inches (nearest value)

Hence, the closest value of the side is 15 inches.

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As per the given data about the group of student, total number of students polled about the technology they own is equal to 99.

As given in the question,

Let 'n(U)' represents the total number of students polled about the technology they own.

Number of students own cell phone = 69

Number of students own a computer = 45

Number of students own a iPod = 23

Number of students own nothing of the above items = 4

Number of students own all three items = 34

Number of students own a cell phone and an iPod but not computer = 8

Total number of students polled  

= 69 + 45 + 23 + 4 + 34 - 8

= 99

Therefore, for the given data about the group of student, total number of students polled about the technology they own is equal to 99.

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The number of hour Jackon worked washing car last week = 8 hours and no . of hours he spent on landcaping = 6 hours .

Let x be no . of hours spent washing car and y be no . of hours spent in landcaping .

According to question ,

x + y = 14                         ....... eqn ( 1 )

( 10 * x ) + ( 12 * y ) = 152

10 x + 12 y = 152                     ...... eqn ( 2 )

Solving linear eqn in 2 variable

Mult . eqn ( 1 ) by 10 ,

10 x + 10 y = 140                           ....... eqn ( 3 )

Subtracting eqn ( 2 ) from eqn ( 3 ) we get ,

( 10 x + 10 y ) - ( 10 x + 12 y ) = 140 - 152

- 2 y = - 12

y = 6

Substituting value of y in eqn ( 1 )

x = 8

Hence , the no . of hour Jackon worked washing car last week = 8 hours and no . of hours he spent on landcaping = 6 hours .

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The largest area that can be enclosed by a fence of 240 m and a wall is 7200m²

It is given that the rectangular area will be fenced up against a long rectangular wall. Therefore, the fencing will be done on just three sides.

Let one side be x

Then the side opposite to it must be x cm as well

The sum of the three sides should be equal to 240 m

Hence the third side must be 240 - 2x m

Therefore the area of the region fenced must be

A = x(240 - 2x)

or, A = 240x - 2x²

Now we need to maximize the above equation

Taking the first derivative zero we get

A' = 0

or, 240 - 4x = 0

or, 60 - x = 0

or, x = 60

Now we will test whether the above output is maximum or not. The second derivative of A is

A'' = -4

Since A'' is a constant function,

Now, A''(60) = -4

Therefore, the maximum side will have lengths of 60 m and 120 m.

Hence the largest area that can be enclosed with the fence is

60 X 120 m²

= 7200 m²

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Answer:y=-6x+34

Step-by-step explanation: I hope this helps

The R means Revolution, T means taper and I means inch. The correct option is B.

Given that in machine tool feed rate or dimensional change notation, dimensional distance i related to rotation or travel change.

We want to find the expression R, T and I.

Machining center programmers specify spindle speed in revolutions per minute (RPM). Feedrates per minute are often given in either inches per minute (ipm) or millimeters per minute (mmpm).

From the above definition, we get that R means Revolution, I means inch and T means taper.

Hence, The expressions R means revolution, T means taper and I means inch for the three of the more common notation are IPM, IPR, or TPI.

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The 90% confidence interval for the mean is (264.6935,275.5065)

A confidence interval (CI) in frequentist statistics is a range of estimates for an unknown parameter. A confidence interval is calculated at a specified confidence level; the 95% confidence level is the most frequent, but other levels, such as 90% or 99%, are occasionally used. The confidence level denotes the long-run proportion of related CIs that include the true value of the parameter. For example, 95% of all intervals generated at the 95% level should contain the parameter's true value.

From the given data ,

Sample mean = X = 270.1

Sample standard deviation = s = 9.3268

n = 10

Therefore , the 90% confidence interval for the mean is ,

[tex]\bar{X}[/tex]±[tex]t_{n-1,\alpha /2}[/tex](s/√n)

270.1 ± [tex]t_{10-1.0.10/2}[/tex](9.3268/√10)

270.1 ±1.8331 ×2.9494

270.1 ± 5.4065

(264.6935,275.5065)

Therefore, the 90% confidence interval for the mean is (264.6935,275.5065)

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The complete question is:

"The following are airborne times (in minutes) for 10 randomly selected flights from San Francisco to Washington Dulles airport. 269 255 267 285 274 275 266 258 271 281

(a) Compute a 90% confidence interval for the mean airborne time for flights from San Francisco to Washington Dulles. (Round your answers to three decimal places.)"

Answer:

2

Step-by-step explanation:

The density of the drink is approximately 1.04 g/cm³.

Density is the ratio of mass and volume.

density = mass/volume

To work out the density of the drink, you will need to calculate the total mass of the drink and then divide it by the volume of the drink.

First, you can calculate the mass of the grape juice by multiplying the density of grape juice by the volume of grape juice:

Mass of grape juice = Density of grape juice x Volume of grape juice

= 1.07 g/cm³ * 35 cm³

= 37.45 grams

Then, you can calculate the mass of the fruit syrup in the same way:

Mass of fruit syrup = Density of fruit syrup x Volume of fruit syrup

= 1.6 g/cm³ x 25 cm³

= 40 grams

Finally, you can calculate the mass of the carbonated water in the same way:

Mass of carbonated water = Density of carbonated water x Volume of carbonated water

= 0.99 g/cm³ * 310 cm³

= 308.9 grams

To find the total mass of the drink, you can add the mass of the grape juice, the mass of the fruit syrup, and the mass of the carbonated water:

Total mass of drink = 37.45 grams + 40 grams + 308.9 grams

= 386.35 grams

To find the density of the drink, you can divide the total mass of the drink by the volume of the drink:

The density of drink = Total mass of drink / Volume of drink

= 386.35 grams / 370 cm³

= 1.04 g/cm³

Therefore, the density of the drink is approximately 1.04 g/cm³.

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I would choose the western side to climb because it is less steep then others.

In mathematics, a line's steepness is determined by its slope (or gradient). The slope is the ratio of any two points on a line's vertical and horizontal distances. A line's steepness can be determined by looking at its slope. Slope is calculated mathematically as "rise over run" (change in y divided by change in x). The slope's absolute value serves as a gauge for a line's steepness, incline, or grade. A steeper line is indicated by a slope with a higher absolute value. A line can be drawn with one of four directions: upward, downward, horizontal, or vertical. If a line rises from left to right, it is said to be increasing.

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Answer:

Step-by-step explanation:

Inverse matrix:

Answer:

a) 3⁶ • 5⁶

Step-by-step explanation:

Given expression,

→ (3 • 5)⁶

Let's simplify the expression,

→ (3 • 5)⁶

→ 3⁶ • 5⁶

Hence, the answer is 3⁶ • 5⁶.

1 Quintal can be carried for Rs 180 to the same direction.

Given that the charge of 0.25 quintal to a certain distance is Rs 45.

With Rs 45, 0.25 quintals can be carried.

With Rs 1, 0.25/45 quintals can be carried in same direction.

With Rs 180, (0.25*180)/45 = 1 quintal can be carried in same direction.

Hence 1 Quintal can be carried for Rs 180 to the same direction.

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The account balance at the end of two years (eight quarters) is $866.24.

Suki earned $66.24 interest during that time.

What do you mean by interest rate?

The real yearly cost of funds over the course of a loan is the annual rate that is charged for borrowing (or made by investing), expressed as a single percentage number.

According to data in the given question,

We have:

Placed amount= A= $800

Interest rate (quarterly)= r= 4%

Time= t = 2 years

Now, we will using the formula below:

[tex]A=P(1+\frac{r}{n} )^{nt}\\=800(1+\frac{0.04}{4} )^{4*2}\\=800(1+0.01 )^{8}\\=800(1.0828)\\=866.24[/tex]

So, the account balance at the end of two years (eight quarters) is $866.24.

Then, we have to determine the earned interest during that time,

Earned interest= A-P

= 866.24 - 800

= 66.24

Therefore, she earned $66.24 interest during that time.

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Answer:

I can’t be confident at all; this is about as close to a random guess as you can get.

Step-by-step explanation:

A correlation coefficient of 0 ⇔ no linear relationship

The linear equation representing the total amount of money Felipe makes every month be

y = x + 1000

Given, Felipe is paid $1,000 every month plus an additional bonus for every tractor he sells, x.

Let the total amount of money be, y

as, felipe gets a fixed amount i.e. $1000 every month.

now, let felipe gets 'x' amount as the additional bonus.

So, the linear equation be,

y = 1000 + x

Hence, the linear equation representing the total amount of money Felipe makes every month be

y = x + 1000

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Answer:

1 and c or 3 I´m not sure what the third angle labeled is

Step-by-step explanation:

The reason why is because they are corresponding angles which makes them equal to each other.

Hope this helped

If the end behavior is increasing to the left and increasing to the right, the function must be of an even degree and must have a positive leading coefficient.

Here, we are given a function whose end behavior is increasing to the left and increasing to the right.

This will happen when the degree of the function is even. For example, if we have a quadratic function- a[tex]x^{2}[/tex] + bx + c, the graph of the given function will either be increasing to the left and increasing to the right or decreasing to the left and decreasing to the right.

Whether it is increasing or decreasing will depend on the leading coefficient or the coefficient of the highest power of the independent variable.

If the leading coefficient is positive, the end behavior will be increasing, whereas if its negative, it'll be decreasing.

Thus, If the end behavior is increasing to the left and increasing to the right, the function must be of an even degree and must have a positive leading coefficient.

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Translate left 12 units, stretch by a factor of 4, and reflect over the x-axis. Then state the vertex. g(x)= vertex:

Using the transformation concepts, it is found that:

   The rule for g is: [tex]g(x) = -4x^{2}[/tex]

   The vertex is: (0,0).

   Stretching a function f(x) vertically by a factor of b is given by:

[tex]g(x) - bf(x)[/tex]

   Reflecting a function over the x-axis is the equivalent of:

g(x) = -f(x)

   The original function is: [tex]f(x) = x^{2}[/tex]

   Stretching by a factor of 4 means that the function is multiplied by 4, thus: [tex]g(x) = 4x^{2}[/tex]

   Reflecting over the x-axis, that is, multiplying by -1, we have that: [tex]g(x) = -4x^{2}[/tex], which is the rule for g.

   From the above equation, added at the end of this answer, the vertex is at (0,0).

Hence the answer is the vertex is at (0,0)

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The probability that the mean time for the sample of 150 returns for this year is greater than 92 is 0.04006.

In the given question,

The mean time to prepare a return is 90 minutes. So μ = 90.

The population standard deviation of this distribution is 14 minutes. So σ=14.

150 returns from this year are selected and analyzed regarding the preparation time. So n = 150.

Then we have to find the probability that the mean time for the sample of 150 returns for this year is greater than 92.

μx = μ = 90

σx = σ/√n = 14 /√150 = 1.14

P (x>92 ) = 1-P(x<92)

= 1 - P[z < (x-μx)/σx]

= 1 - P[z < (92-90)/1.14}

= 1 - P ( z < 1.754)

Using standard normal table

= 1 - 0.95994

= 0.04006

Probability = 0.​04006

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The right question is:

Bones Brothers & Associates prepare individual tax returns. Over prior years, Bones Brothers has maintained careful records regarding the time to prepare a return. The mean time to prepare a return is 90 minutes, and the population standard deviation of this distribution is 14 minutes. Suppose 150 returns from this year are selected and analyzed regarding the preparation time. What is the probability that the mean time for the sample of 150 returns for this year is greater than 92?