A car last month was $250 this month its $330. What is the percent increase

Answer:

15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375, 390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, 735...

Step-by-step explanation:

Answer: D. y=-x+7

Step-by-step explanation: For example,

(-1,8)

x= -1

y=8

-(-1) = 1

1 + 7 = 8

Answer:

Step-by-step explanation:

Let's start by setting up two variables to represent the number of pounds of type A and type B coffee used in the blend. Let:

x be the number of pounds of type A coffee used

3x be the number of pounds of type B coffee used (since there were three times as many pounds of type B used as type A)

The total cost of the blend is given as $796.00, so we can set up an equation based on the cost of each type of coffee and their respective amounts:

5.95x + 4.65(3x) = 796

Simplifying and solving for x, we get:

5.95x + 13.95x = 796

19.90x = 796

x = 40

Therefore, 40 pounds of type A coffee were used in the blend. To find the number of pounds of type B coffee, we can substitute x = 40 into our expression for the number of pounds of type B:

3x = 3(40) = 120

Therefore, 120 pounds of type B coffee were used in the blend.

a) [tex]$\sum\limits_{n=1}^{\infty} 5\left(\frac{3}{4}\right)^{n-1}$[/tex] series has sum of 20.

What is sum?

In mathematics, the sum of a series is the result obtained by adding together all the terms in a sequence of numbers.

The series that has a sum of 20 is [tex]$\sum\limits_{n=1}^{\infty} 5\left(\frac{3}{4}\right)^{n-1}$[/tex].

To see why, we can use the formula for the sum of an infinite geometric series:

[tex]S = \frac{a}{(1-r)}[/tex]

where S is the sum of the series, a is the first term, and r is the common ratio.

In this case, the first term is:

[tex]a = 5(\frac{3}{4} )^0 = 5[/tex]

And the common ratio is:

[tex]r = \frac{3}{4}[/tex]

So, the formula becomes:

[tex]S = \frac{5}{(1-\frac{3}{4} )}[/tex]

Simplifying the denominator, we get:

[tex]S = \frac{5}{\frac{1}{4}}[/tex]

Multiplying by the reciprocal, we get:

S = 20

Therefore, the sum of the series is 20, which means that the series [tex]$\sum\limits_{n=1}^{\infty} 5\left(\frac{3}{4}\right)^{n-1}$[/tex]

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Answer:

Step-by-step explanation: Multiply all numbers and add all then divided by the lowest

Let x be the scale factor.

Then, the ratio of the areas of the two triangles is x².

We are given that the larger triangle has an area of 360 square meters and the smaller triangle has an area of 2.5 square meters. So we can set up the equation:

x²(2.5) = 360

Solving for x, we get:

x = sqrt(360/2.5)

x = sqrt(144)

x = 12

Therefore, the scale factor is 12:1. Answer: 12:1.

Answer: $105,000

Step-by-step explanation:

$140,000-25%deposit =$105,000

Using equations,

A: y=-x²+6x-5

y=3

3=-x²+6x-5

y=0

B: (x-2) (x-4) =0

C: x-2=0 OR x-4=0

D: x=2 OR x=4

An equation is a mathematical statement that contains the symbol "equal to" between two expressions with identical values. as in 3x + 5 = 15, for example. There are many different types of equations, including linear, quadratic, cubic, etc.

Y=-x²+6x-5

Y=3

Using substitution:

3 = - x²+6x- 5

x²- 6x+8 = 0

Now factor your equation:

x²- 6x+8 = 0

⇒ x² -2x - 4x + 8 = 0

⇒ x (x-2) -4(x-2) = 0

⇒ (x- 2) (x-4) =0

Identify the x-values of the solutions:

x-2=0 or x-4 =0

x=2 or x=4

Identify the solution to the system:

x=2       y=3 and

x=4       y=3

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Answer:

1 c

2 d

3 a

4 b

5 e

Step-by-step explanation:

scale factor > 1 => expansion

scale factor < 1 => contraction

scale factor = 1 => no change

scale factor is (-) => opposite site

The volume of the solid with a hole in the shape of a rectangular prism passing through the center of a cylinder with a radius of 10 yards is approximately 1410 cubic yards, rounded to the nearest ten.

The cylinder with the hole can be viewed as the difference of two solids: the cylinder and the rectangular prism. The volume of the cylinder is given by the formula V_cyl = π[tex]r^2h[/tex], where r is the radius and h is the height.

The height of the cylinder is equal to the height of the rectangular prism that passes through its center. The height of the rectangular prism is given as 12 yards, which is also the diameter of the cylinder. Therefore, the height of the cylinder is h = 12/2 = 6 yards.

The volume of the cylinder is therefore V_cyl = π[tex](10)^2(6)[/tex] = 600π cubic yards.

The rectangular prism has a length of 20 yards, a width of 10 yards, and a height of 12 yards. Therefore, its volume is V_prism = 20 × 10 × 12 = 2400 cubic yards.

The volume of the solid with the hole is then:

V = V_cyl - V_prism = 600π - 2400 = 600(π - 4) ≈ 1412.2 cubic yards.

Therefore, the volume of the solid is approximately 1410 cubic yards.

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Answer:

Step-by-step explanation:

explain you question more i cant understand if i could i would help

Answer:

The area of the shaded region equals 21.43 sq. units.

Step-by-step explanation:

When calculating how much material is needed to cover a wooden table, how many tiles are needed to tile the floor, how much space is needed for a parking lot, how much paint is needed for the walls, etc., we employ the notion of area.

Given, A circle is circumscribed in the square,

Area of shaded region = area of square - area of circle

Area of square = Side²

= 10 × 10 = 100 sq. units,

Area of circle = Πr²

Radius = Diameter / 2

radius = 10 / 2 = 5 unitsArea of circle = Πr²

Radius = Diameter / 2

radius = 10 / 2 = 5 units

Area of circle = 22/7 × 5 × 5

= 78.57 sq. units

Area of shaded region = 100 - 78.57,

Area of shaded region = 21.43 sq. units

Answer: a/ c/ d and e

Step-by-step explanation:

[tex]\Large\textbf{Please give complete questions}[/tex]

The probabilities of the events and their values are shown below

The total number of marbles in the bag is 13, with 6 blue, 2 green, and 5 red.

P(Blue or Green) represents the probability of selecting a blue or green marble on the first pick.

This is calculated as follows:

P(Blue or Green) = P(Blue) + P(Green)

= 6/13 + 2/13

= 61.5%

P(Blue and Green) represents the probability of selecting a blue marble and a green marble on two consecutive picks, with replacement.

Therefore:

P(Blue and Green) = P(Blue) * P(Green)

= (6/13) * (2/13)

= 7.1%

P(Blue and Green) represents the probability of selecting a blue marble and a green marble on two consecutive picks, without replacement.

Therefore:

P(Blue and Green) = P(Blue) * P(Green)

= (6/13) * (2/12)

= 7.7%

P(Blue) represents the probability of selecting a blue marble on the first pick.

This is simply the proportion of blue marbles in the bag:

P(Blue) = 46.2%

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Answer:

  z = 0.80

Step-by-step explanation:

You want the value of z such that p(-z < X < z) = 0.5762 for a normal distribution.

The area outside the region of interest will be split evenly between the two tails. That is, the lower tail will hold (1 -0.5762)/2 = 0.2119 of the area of the distribution. The required value of z will be the magnitude of the Inverse CDF function for this value.

The attached calculator shows the required value of z is about 0.80.

The given expression can be written in scientific notation as 1.8 x 10² To obtain this, we first divide 2,520,000 by 14,000 to get 180. Then, we express this as 1.8 x 10² by moving the decimal point two places to the left and adding an exponent of 2.

For expressing very big or very small numbers in scientific notation, the number is written as the product of a number between 1 and 10 and a power of 10

To convert a number to scientific notation, first express it in the form a x 10^b, where a is a number between 1 and 10, and b is an integer.

Then, move the decimal point in a to obtain a number between 1 and 10, and add an exponent to 10 that corresponds to the number of places you moved the decimal point.

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Approximately 106.79 mg of Tylenol remain in Courtney's body after 4 hours.

What is the capacity of taking medication?

When someone takes medication, it is important to understand how long the medication remains in their system. This can help ensure that the medication is effective and prevent unwanted side effects. In this case, Courtney has taken 250mg of Tylenol to relieve a headache. We are asked to find out how much of the Tylenol remains in her body after 4 hours.

To answer this question, we can use the formula A=250(.73)ⁿ, where A represents the amount of Tylenol remaining in the body after n hours. The value 250 represents the initial amount of Tylenol Courtney took, and 0.73 represents the percentage of Tylenol that is eliminated from the body per hour.

When we substitute n=4 into the formula, we get A= 250(.73)⁴. This means that after 4 hours, approximately 106.79 mg of Tylenol remain in Courtney's body. This calculation assumes that Courtney has not taken any additional Tylenol during this time period.

It is worth noting that individual factors such as age, weight, and metabolism can affect how long a medication remains in someone's system. Additionally, taking medications with other substances, such as alcohol or other medications, can also impact the body's ability to eliminate the medication. Therefore, it is always important to follow the advice of a medical professional and carefully read medication labels and instructions.

A = 250(.73)ⁿ

A = 250(.73)⁴ (substituting n=4)

A ≈ 106.79

In conclusion, we can calculate that after 4 hours, approximately 106.79 mg of Tylenol remains in Courtney's body. It is important to remember that medication elimination can vary based on individual factors, and it is always best to consult a healthcare professional if you have any concerns about medication use or potential side effects.

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a) The total cost for renting a compact car for eight days is as follows for each plan:

b) It is more economical to take the weekly rental plan than the daily rental plan.

Each plan's total rental cost is determined using multiplication or addition.

For instance, the total cost for the daily plan is a product of the daily rental cost and the number of days the car is rented.

The total cost for the weekly plan is an addition operation since the car is rented for 7 days (weekly cost) and 1 day (daily cost).

                               Day                  Week

Rental cost per      $48                   $312

1 week = 7 days

Total rental cost for

8 days                $384 ($48 x 8)     $360 ($312 + $48)

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The distance walked by Dario from to reach comic book store is 1.4 miles.

Displacement and distance are two terms that, while they appear to imply the same thing, have quite different definitions and meanings. Displacement is the measurement of "how much space an item has covered while it has been in motion," whereas distance is the indication of "how much ground an object has covered during its motion." Let's examine the distinction between displacement and distance in this essay.

For the given route we have:

House to jewelry store:

0.2 - (-0.5) = 0.2 + 0.5 = 0.7 miles.

Jewelry store to bank:

0.6 - 0.2 = 0.4 miles.

Bank to comic book store:

-0.5 -(-0.8) = -0.5 + 0.8 = 0.3 miles.

House to comic book store:

0.7 + 0.4 + 0.3 = 1.4 miles.

Hence, the distance walked by Dario from to reach comic book store is 1.4 miles.

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The complete question is:

The graph is a parabola, with a vertex at (4,-4), an axis of symmetry at x = 4, x-intercepts at x = 10 and x = -2, and a y-intercept at (0,-20).

A quadratic function is a type of polynomial function of degree 2. It can be defined as a function in which the highest power of the independent variable x is 2.

The quadratic function f(x) = x² - 8x - 20 has a graph that is a parabola with a vertical axis of symmetry.

Vertex: The vertex of the parabola can be found using the formula x = -b/2a, where a and b are the coefficients of x² and x respectively.

In this case, a = 1 and b = -8, so the x-coordinate of the vertex is x = -(-8)/(2×1) = 4.

To find the y-coordinate of the vertex, substitute x = 4 into the equation: f(4) = 4² - 8(4) - 20 = -4. Therefore, the vertex is located at (4,-4).

Axis of symmetry: The axis of symmetry of the parabola is a vertical line passing through the vertex.

In this case, the axis of symmetry is the line x = 4.

Intercepts: To find the x-intercepts set y = 0 and solve for x: x² - 8x - 20 =0.

this quadratic equation can be factored as (x - 10)(x + 2) = 0

so the x-intercepts are x = 10 and x = -2.

To find the y-intercept, set x = 0 and evaluate f(0) = 0² - 8(0) - 20 = -20. Therefore, the y-intercept is (0,-20).

Image is attached below.

The graph is a upward-facing parabola, with a vertex at (4,-4), an axis of symmetry at x = 4, x-intercepts at x = 10 and x = -2, and a y-intercept at (0,-20).

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(a)The transformed vertices would be:

W' = (1, -3)

X' = (-3, 0)

Y' = (1, -2)

(b)The transformed vertices would be:

W' = (-0, 1)

X' = (4, 4)

Y' = (-0, 2)

a) Reflection: To reflect the triangle across the y-axis, we simply need to negate the x-coordinates of each vertex.

The transformed vertices would be:

W' = (-0, 1)

X' = (4, 4)

Y' = (-0, 2)

The reflected triangle would be W'X'Y'.

b) Translation: To translate the triangle by the vector (1, -4), we add (1, -4) to the coordinates of each vertex.

The transformed vertices would be:

W' = (1, -3)

X' = (-3, 0)

Y' = (1, -2)

The translated triangle would be W'X'Y'.

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The absolute extrema for the given function occurred at the critical points for Interval  [0, 2π] is 3.

The point wherein the minimum or maximum value of the function is reached is known as the absolute extremum (also global extremum) of the function in the given interval.

The absolute extremum, or point equivalent to the highest or least value in the entire function, is frequently the interval specified, which is the domain of the function.

The given function :

y = 3 cos x,

Differentiate the function with respect to 'x'.

y' = -3 sin x

Find the critical point , by y = 0

-3 sin x = 0  

x = sin ⁻¹ (0)

Interval  [0, 2π]

So, critical points are: x = 0,π, 2π

Now, evaluate function by putting the critical points;

y(0) = 3 cos 0 = 3

y(π) = 3 cos π = 0

y(2π) = 3 cos 2π = 3

Thus, absolute extrema for the given function occurred at the critical points 0 and 2π that is 3.

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Answer:

12

Step-by-step explanation:

Answer:

x=-5, y=-2

Step-by-step explanation:

2x+4y=-18                (1)

5x-10y=-5                 (2)

apply 5×(1)+2×(2)

10x+20y=-90      (3)

10x-20y=-10   (4)

by adding (3) and (4)

20x=-100

x=-5

put the value of x in  (1)

we get 2×(-5)+4y=-18

⇒y=-2

After solving the given equations, the value of x and y are -5 and -2 respectively.

A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions.

A mathematical statement that has an "equal to" symbol between two expressions with equal values is called an equation.

As in 3x + 5 Equals 15, for instance.

Equations come in a variety of forms, including linear, quadratic, cubic, and others.

So, we have the equations:

2x+4y=-18                (1)

5x-10y=-5                 (2)

Apply as follows: 5×(1)+2×(2)

10x+20y=-90      (3)

10x-20y=-10   (4)

After adding (3) and (4):

20x=-100

x=-5

Insert the value of x in  (1) as follows:

We obtain: 2×(-5)+4y=-18

⇒y=-2

Therefore, after solving the given equations, the value of x and y are -5 and -2 respectively.

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Answer:

(7) AB is a tangent , (8) AB is not a tangent

Step-by-step explanation:

the angle between a tangent and the radius is 90°

if AB is a tangent then Δ ABC is right with hypotenuse AC

using Pythagoras' identity

the square on the hypotenuse of a right triangle is equal to the sum of the squares on the other 2 sides.

if AC² = AB² + BC² , then AB is a tangent to the circle

(7)

AC² = 34² = 1156

AB² + BC² = 30² + 16² = 900 + 256 = 1156

since AC² = AB² + BC² , then AB is a tangent to the circle

(8)

AC² = 28² = 784

AB² + BC² = 21² + 20² = 441 + 400 = 841

since AC² ≠ AB² + BC² , then AB is not a tangent to the circle

The measures of the numbered angles in the rhombus include the following:

In Mathematics and Geometry, a rhombus can be defined as a type of quadrilateral that is composed of four (4) equal sides and opposite interior angles that are congruent (equal). Additionally, a rhombus typically has two (2) diagonals that bisect each other at right angles (90 degrees).

This ultimately implies that, the opposite sides of a rhombus are parallel and the sum of all the four (4) interior angles is equal to 360 degrees.

m∠3 + 90° + 31° = 180°

m∠3 + 121° = 180°

m∠3 = 180° - 121°

m∠3 = 59°

m∠3 ≅ m∠6 ≅ m∠4 = 59°

Since opposite angles are equal, we have:

m∠1 ≅ m∠5 = 31°

Since the two (2) diagonals bisect each other at right angles (90 degrees), we have:

m∠2 = 90°

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