The prices paid for a model of a new car are approximately normally distributed with a mean of $17,000 and a standard deviation of $500.

The price that is 3 standard deviations above the mean is $__

The price that is 2 standard deviations below the mean is $__

The percentage of buyers who paid between $16,500 and $17,500 is %__

The percentage of buyers who paid between $17,000 and $18,000 is %___

The percentage of buyers who paid less than $16,000 is %__

The equation that represents one sixth of the number n is given as follows:

n/6.

The equation is a fraction of an amount. A fraction has the following format:

x/y.

In which:

One sixth is a fraction in which the numerator is one and the denominator is six, as follows:

1/6.

To obtain one six of a number n, the above fraction is multiplied by n, as follows:

n x 1/6.

When two fractions are multiplied, the numerators multiply themselves, as do the denominators, hence the product is given as follows:

n x 1/6 = n/6.

Hence the equation that represents one sixth of the number n is given as follows:

n/6.

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The equation that represents twenty-five is one-sixth of the number n is;

25 equals n over 6

We want to find the equation that represents twenty-five is one-sixth of the number n.

Now, to say that twenty-five is one-sixth of the number n simply means that twenty five is equal to one-sixth of the number n.

Expressing this algebraic statement as an algebraic expression gives us; 25 = ¹/₆n

So we can see that this represents the given algebraic statement and as such looking at the options, we can conclude that the correct one is Option A.

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Complete question is;

Which equation represents twenty-five is one-sixth of the number n?

25 equals n over 6

25 = 6n

6 = 25n

one sixth equals n over 25

Step-by-step explanation:

9.

x = 3

yes, that's really it.

it just means that any value is valid for y.

this line is not a function, because the one valid value for x (3) has infinitely many assigned y values.

10.

the usual equation for a line is

y = ax + b

with "a" being the slope, "b" being the y-intercept (the y-value when x = 0).

we see that b = 0, as the line goes through the origin (0, 0).

the slope is the ratio

y coordinate difference / x coordinate difference

when going from one point on the line to another.

we see e.g. the points (0, 0) and (1, -3). I always recommend to look for points with integer coordinates.

when going from one to the other,

x changes by +1 (from 0 to 1).

y changes by -3 (from 0 to -3).

the slope "a" = -3/1 = -3.

the line equation is

y = -3x

The tangential and normal components of the acceleration when s = 10 m is 40 m/s^2 and 8 m/s^2 respectively.

In the given question, a car is travelling along the road with a speed of 2s m/s, where s is in meters.

We have to determine the tangential and normal components of the acceleration when s = 10 m.

Speed (v) = 2s  

Motion is circular so, Radius of circle = 50m

Tangential acceleration = dv/dt

Tangential acceleration = d(2s) / dt

Tangential acceleration = 2(ds)/dt

Tangential acceleration = 2v

Tangential acceleration = 2(2s)

Tangential Acceleration = 4s

As given s = 10 m

Tangential acceleration = 4 x 10

Tangential acceleration  = 40 m/s^2

Normal acceleration = v^2/ r

Normal acceleration = 4s^2/r

Normal acceleration = {4 x 10^2}/50

Normal acceleration = {4 x 100}/50

Normal acceleration = 400/50

Normal acceleration = 8 m/s^2

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The complete question is:

A car is travelling along the road with a speed of 2s m/s, where s is in meters. Determine the tangential and normal components of the acceleration when s = 10 m. Treat the car as a particle

The time is 8 seconds to reach the bottom of a 252-foot-long hill.

What is a quadratic equation?

Any equation of the form where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

We have,

riding at a speed of 18mi/h when she starts down a long hill,

The distance she travels in feet can be modeled by d(t) = 4t² + 18t,

252 foot - long hill

I attempted the problem and I got 12.5 seconds.. but im not sure if im right

Use the quadratic formula to find t.

d(t) = 4t² + 18t,

d(t)=400

4t² + 18t =400

4t² + 18t -400=0          

2t²+9t-200=0          

x= 8; -25/2  

Hence, the time is 8 seconds to reach the bottom of a 252-foot-long hill.

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Answer:

130 feet

Step-by-step explanation:

Your have to find the perimeter. Perimeter of a shape is the distance around the shape

Answer:

Dilation

Step-by-step explanation:

The  a'b'c'    figure is larger than the original a b c

Answer:

27.8miles

first we add 37 and 17=54

then multiple it with 20 and divide by 100 so we can change it to percent

so it will be 10.8 miles and then we add it with 17 miles =27.8 miles

the area of the triangle ABC is found by using the formula 1/2 * (base * height). Here, the base is 0 and the height is 1. Thus, the area of the triangle ABC = 0.5.

Let x = 0, y = 1 in 5x2y = 31

31 = 0

Thus, the point B is (0, 0).

The area of the triangle ABC = 1/2 * (0 * 1) + (0 * 1) + (1 * 0) = 0.5.

The equation of line L is given as 5x2y = 31. To find the point B, we need to substitute x = 0 in the equation. Doing so, we get 31 = 0, which means that the point B lies on the y-axis at (0, 0).

Next, since the line M is perpendicular to L and passes through A, we can assume that it is a horizontal line passing through (0, 1). Thus, the point C is the point of intersection of L and M, which is (1, 0).

Finally, the area of the triangle ABC is found by using the formula 1/2 * (base * height). Here, the base is 0 and the height is 1. Thus, the area of the triangle ABC = 0.5.

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Answer:

1. 80

2. runway 18

Step-by-step explanation:

Answer: The median of the shoe sizes is 6.5. If a shoe size of 4 is added to the data, the median will not change because it is based on the middle value in the data set and the addition of a value of 4 will not affect the middle value.

Step-by-step explanation:

Answer: 27

Step-by-step explanation:

This is a proportion.

a = 5

b = 9

So A must equal 15. In order to get that we multiply by 3. Since we did that to A, we must also do it to B; that way we keep an equal proportion.

9 x 3 = 27

Answer: Please adjust the 37. The answer would be 40.

Step-by-step explanation:

23 + 17 obviously equals 40.

The angle is changing at the rate  [tex]\frac{18}{\pi }[/tex] when a is 10m from the intersection and b is 20m from the intersection.

In this problem, all three variables (x, y & z) are changing with respect to time.

x = 20 and y = 10

[tex]\frac{dx}{dt} = -1[/tex]

[tex]\frac{dy}{dt} = 2[/tex]

[tex]tan[/tex](θ)=[tex]\frac{y}{x}[/tex]

take derivative :

[tex]tan[/tex] (θ) = [tex]\frac{y}{x}[/tex]

[tex]sec^{2}[/tex](θ) [tex]\frac{d\alpha }{dt}[/tex] = [tex]\frac{x\frac{dy}{dt} - y\frac{dy}{dt} }{x^{2} }[/tex]

Substitute the values :

[tex]sec^{2} \alpha (\frac{d\alpha }{dt} ) = \frac{20 . 2 - 10. (-1)}{20^{2} }[/tex]

solve the equation :

[tex]\frac{5}{4} (\frac{d\alpha }{dt} ) = \frac{20 . 2 - 10. (-1)}{20^{2} }[/tex]

[tex]\frac{5}{4} (\frac{d\alpha }{dt} ) = \frac{50}{400 }[/tex]

[tex](\frac{d\alpha }{dt} ) = \frac{50}{400 } * \frac{4}{5}[/tex]

[tex](\frac{d\alpha }{dt} ) = \frac{1}{10 }[/tex] radian/sec

[tex](\frac{d\alpha }{dt} ) = \frac{18}{\pi } degrees/sec[/tex]

This means that the angle is increasing as a gets closer to the intersection and b gets moves away from the intersection.

So, The angle is changing at the rate  [tex]\frac{18}{\pi }[/tex] when a is 10m from the intersection and b is 20m from the intersection.

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The value of a + c in the equation is -5

From the question, we have the following parameters that can be used in our computation:

y = ax² + 5x + c

x- intercepts at 1 and 3

This means that

When x = 1 and 3, the value of y is 0

So, we have

When x = 1:

a(1)² + 5(1) + c = 0

a + 5 + c = 0

a + c = -5

When x = 3:

a(3)² + 5(3) + c = 0

9a + 15 + c = 0

9a + c = -15

So, we have

a + c = -5

9a + c = -15

Hence, the value of a + c is -5

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The 12-foot ribbon is cut into pieces three-quarters of a foot long, then 16 pieces can be made.

What is a three-quarter length?

The fraction 3/4 or three-quarters means 3 parts out of 4. The upper number, 3, is called the numerator and the lower number, 4, is the denominator.

We have a 12-foot ribbon and you are making a cut into pieces three-quarters  (3/4-foot)  of a foot long sections, and you want to know many times you can do that here.

So, the number of pieces = (Length of the ribbon  ÷ Length of each piece)

You just need to take 12 and divide it by 3/4, to see how many sections you can have.

12 ÷ 3/4

Change division to multiplication by taking the reciprocal (the flipping) of the second number:

= (12 * 4) / 3

= 48/3

= 16

To multiply fractions, multiply straight across on top and straight across on bottom:

Hence, the 12-foot ribbon is cut into pieces three-quarters of a foot long, then 16 pieces can be made.

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The judgement on each of the given scenarios are as follows;

1. Yes, enough information is given to conclude that the triangles are congruent by the side-side-side SSS congruence theorem.

2. No, the information conveyed through the triangles is not enough to conclude that the triangles are congruent.

3. Yes, the two triangles given are congruent by the HL Congruence theorem.

1. By observation: the two Triangles represented in 1. share a side and also, the two corresponding sides are congruent; it can be concluded that the two triangles are congruent.

2. Although two sides are said to be congruent in the triangles; it cannot be concluded that the triangles are congruent neither by HL nor SSS congruence theorem.

3. The two Triangles share the diagonal which is the hypothenuse of both triangles.

Additionally, one of the other side lengths of the triangles are congruent; Therefore, the triangles are congruent by the HL congruence theorem.

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The values of v and w are 12 and 20 respectively which makes ΔPQR ≅ ΔIJK (Congruent right triangles).

Two triangles are said to be congruent if their shape and size are the same. If two right triangles are said to be congruent, then they must have equal measures for their corresponding sides and angles.

The given two right triangles are congruent. I.e., ΔPQR ≅ ΔIJK

So, their corresponding sides QR = IJ and PR = IK, and the corresponding angle ∠Q = ∠J.

But we have QR = w - 1; IJ = 3w - 41; PR = 6v-12; IK = 5v

So, on equating them, we get

QR = IJ ⇒ w - 1 = 3w - 41

⇒ 3w - w = 41 - 1

⇒ 2w = 40

∴ w = 20

And

PR = IK ⇒ 6v-12 = 5v

⇒ 6v - 5v = 12

∴ v = 12

Thus, the value of v = 12 and w = 20.

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The cost of the book before the sales tax is $31

From the question, we have the following parameters that can be used in our computation:

Sales tax = 5%

Cost of book = $32.55 after tax

The cost of the book before tax is calculated using the following equation

Cost of book after tax = Cost of book before tax * (1 + Sales tax)

Substitute the known values in the above equation, so, we have the following representation

32.55 = Cost of book before tax * (1 + 5%)

Evaluate the sum

So, we have the following representation

32.55 = Cost of book before tax * (1.05)

Divide both sides by 1.05

Cost of book before tax = 31

Hence, the cost is $31

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Answer:

  10 minutes

Step-by-step explanation:

You want to know how much longer 2/3 hour is than the sum of 1/5 hour and 3/10 hour.

Each fraction of an hour can be expressed in minutes:

The time difference of interest is ...

  (2/3 - 1/5 -3/10) h = (40 -12 -18) min = 10 min

Jacob spent 10 minutes more reading than doing housework.

(a) The net force acting on this object at t = 1 s is 88 N.

(b) The net force acting on this object at t = 4 s is 0 N.

(c) The net force acting on this object at t = 7 s is -13.2 N.

In the given question, the velocity graph of a 2.2 kg object as it moves along the x-axis.

The given mass = 2.2

a) We have to find the net force acting on this object at t = 1 s.

At t=1 s

Slope of a graph = acceleration

Acceleration = slope

Acceleration = 12/3

Acceleration = 4 m/s^2

Net force, F = m*a

F = 22*4

F = 88 N

So the net force is 88 N.

b) We have to find the net force acting on this object at t = 4 s.

At t = 4 s

Acceleration, a=slope of graph

a = ( 12 - 12) /(3 - 0)

a = 0 m/s^2

The net force , F = m * a

F = 2.2 * 0 = 0 N

c) We have to find the net force acting on this object at t = 7 s.

At t = 7 s

Acceleration, a = ( 0 - 12 ) / (8 - 6)

a = - 6 m/s^2

The net force, F = m * a

F = 2.2 * (-6)

F = -13.2 N

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The complete question is:

The figure(figure 1) shows the velocity graph of a 2.2 kg object as it moves along the x-axis.

(a) What is the net force acting on this object at t = 1 s.

(b) What is the net force acting on this object at t = 4 s.

(c) What is the net force acting on this object at t = 7 s.

Answer:

1. 6v+8

2.5x+6y

Answer: If your friends had 16 pizzas, the total amount of pizza sauce needed was 11/3 cups, How many pizzas could you create?

Step-by-step explanation: :D

Answer:

C

Step-by-step explanation:

The critical value for the left-tailed test is −2.0537.

For a left-tailed test, when α=0.02, the critical z-value is the value on the horizontal axis of the z- or standard normal distribution curve such that the area under the curve to the left of this critical value is 0.02.

Using a standard normal distribution table,

Z-Score, also known as the standard score, indicates how many standard deviations an entity is, from the mean.

There are two z-score tables which are:

Now 0.5-α=0.5-0.02

=0.48

So 0.48 is closest in z score table is z=2.05

The left-tailed critical value always negative(-).

So, the value is -2.05.

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Answer: d = 0

Step-by-step explanation:

     To solve this equation, we will isolate the variable.

7.5d = 2.5d

(7.5d) - 2.5d = (2.5d) - 2.5d

5d = 0

[tex]\frac{5d}{5}[/tex] = [tex]\frac{0}{5}[/tex]

d = 0

     Elena is correct when she subtracts 2.5d from each side. Since subtraction is the inverse operation of addition, we need to subtract. 7.5d and 2.5 are both like terms, so we subtract the coefficents.

To solve this equation, you can use the property of equality, which states that whatever you do to one side of the equation, you must also do to the other side.

To isolate the variable "y," you can divide both sides of the equation by 4:

4y / 4 = 164 / 4

This simplifies to:

y = 41

Therefore, y equals 41.

Answer:

[tex] \sf \: a) \: 41[/tex]

Step-by-step explanation:

Now we have to,

→ find the required value of y.

The equation is,

→ 4y = 164

Then the value of y will be,

→ 4y = 164

→ y = 164/4

→ [ y = 41 ]

Hence, the value of y is 41.

The probability that two or more of the events will occur is 0.683594.

The probability that two or more of the events will occur is equal to 1 minus the probability that none of the events will occur. Since the probability of each event occurring is 0.25, the probability that none of the events will occur is (1 - 0.25) * (1 - 0.25) * (1 - 0.25) * (1 - 0.25) = 0.316406. Therefore, the probability that two or more of the events will occur is 1 - 0.316406 = 0.683594.

Alternatively, you can find the probability that two or more of the events will occur by adding up the probabilities of each of the ways that two or more of the events can occur.

There are four ways that two events can occur (for example, event A and event B), six ways that three events can occur (for example, event A, event B, and event C), and four ways that all four events can occur.

Thus, the probability that two or more of the events will occur is (4 * 0.25 * 0.25) + (6 * 0.25 * 0.25 * 0.25) + (4 * 0.25 * 0.25 * 0.25 * 0.25) = 0.683594, which is the same result as before.

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Answer:

$51.20 is the cost after a 20% reduction.

Explanation:

There are two ways that this can be determined.

First, we can find what 20% of the original $64 price is and subtract the discount from the price.

20% = 0.20

0.20 ( $64) = $12.80

$64 - $12.80 = $51.20

Or

We can say that $64 is 100% of the price and subtract the 20% meaning the sale price will be 80% of the original price.

100% = 1.00 20% = .20

$64(1.00-.20) = $64(.80) = $51.20

Thee volume of the cone has a value of 1, 739. 60 cubic feet

The formula for calculating the volume of a cone is expressed as;

V = πr²h/3

Where;

From the information given, we have the values as;

Diameter = 19

But radius = Diameter/2

Now, radius = 18. 7/2 = 9.35 ft

Substitute the values into the formula

Volume = 3. 142( 9.35)² × 19/3

Find the value of the square

Volume = 3. 142(87. 42) × 6. 3

Multiply the values

Volume = 1, 739. 60 cubic feet

Hence, the value is 1, 739. 60 cubic feet

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Answer:

Step-by-step explanation:

You want the number of months and the total amount paid when you pay off a credit card debt of $1367.90 with 9.5% APR at the rate of $400 each month.

The amount of the payment that goes to interest each month is the monthly rate (9.5%/12) multiplied by the remaining balance. The first month's interest is ...

  $1367.90 × 0.095/12 = $10.8292 ≈ $10.83 . . . . rounded to cents

Then the balance is reduced by ...

  $400 -10.83 = $389.17

so it becomes ...

  $1367.90 -389.17 = $978.73 . . . . . balance after first payment

These calculations are repeated for subsequent payments. It is convenient to let a spreadsheet do them. (It can round the interest for you.) The results are shown in the attachment.

The negative balance for month 4 reflects the overpayment that a payment of $400 would be. The actual month 4 payment is the previous balance ($191.12) together with the interest due on that ($1.51), so is $192.63.

The total repaid is the sum of interest charges ($24.73) and the initial balance ($1367.90). That is, you paid off the initial balance and the interest due.

You repaid a total of $1392.63 in 4 months.

__

Additional comment

The steps for computing the total repaid are ...

Note, there are formulas for the payoff time and the total repaid. However, they do not take into account rounding of intermediate values, and they presume the last payment is made partway through the month. In short, it only gives an approximation of the amount repaid.

By listing actual amounts, rounded to cents, the actual amount repaid can be figured with no error. A spreadsheet is very helpful for that.