What is the percent of change in the cost of a DVD set that originally sold for$69.99 and is now on sale for $44.99? Round your answer to the nearest whole number.

Answer:

1) yes the data is proportional

2) k= 3/4

3) y= 3/4 x

In this question you can simply find the partten by dividing y with x

Answer: 4 years

Step-by-step explanation:

3.1% of 500 hundred is 15.50 and its takes about 4 years.

Answer:

\( - 2 \frac{3}{5} \div \frac{3}{5} = - \frac{13}{5} \times \frac{5}{3} = - \frac{13}{3} = - 4 \frac{1}{3} \)

\(2 \frac{1}{4} \div \frac{3}{4} = \frac{9}{4} \times \frac{4}{3} = 3\)

\( - \frac{10}{17} \div ( - \frac{15}{17} ) =\)

\( - \frac{10}{17} \times ( - \frac{17}{15} ) = \frac{2}{3} \)

\( 2.75 \div ( - 2.2) = \)

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

\( \frac{11}{4} \div ( - \frac{11}{5} ) = \frac{11}{4} \times ( - \frac{5}{11} ) = - \frac{5}{4} = - 1.25\)

3 ⇒ 2 (1/4) / (3/4)

-1.25 ⇒ 2.75 / (-2.2)

2/3 ⇒ (-10/17) / (-15/17)

-4 1/3 ⇒ -2 (3/5) / (3/5)

Hope my answer helps you✌️

Mark BRAINLIEST

Answer:

The first click beetle went higher.

Step-by-step explanation:

The vertex is the minimum point of a parabola that opens upwards, or the maximum point of a parabola that opens downwards.

Since the height of each of the beetles at time, t seconds, is modelled as a parabola that opens downwards, the maximum height of each beetle is the y-value of the vertex.

The function representing the height, h, of the first beetle is:

\(h(t)=-16t^2+8t\)

We could complete the square to rewrite the function in vertex form, however the quickest way to find the vertex of a quadratic function in the form ax² + bx + c is to use the formula for the x-value of the vertex:

\(\boxed{x_{\sf vertex}=-\dfrac{b}{2a}}\)

Comparing  ax² + bx + c with the given function:

Therefore, substituting the values of a and b into the formula, the x-value of the vertex of h(t) is:

\(x_{\sf vertex}=-\dfrac{8}{2(-16)}=0.25\)

To find the y-value of the vertex, and thus the maximum height of the first beetle, simply substitute t = 0.25 into function h(t):

\(\begin{aligned}\implies h(0.25)&=-16(0.25)^2+8(0.25)\\&=-16(0.0625)+2\\&=-1+2\\&=1\end{aligned}\)

Therefore, the maximum height of the first beetle is 1 foot.

From inspection of the given graph modelling the height of the second beetle, we can see that the maximum y-value is approximately 0.76 feet.

As the height of the second click beetle is less than the maximum height of the first click beetle, the first beetle went higher.

Answer:

525

Step-by-step explanation:

If it's just asking to find the average of heads then times it by 20 then just do 32+28+21+24 to get 105 and divide it by 4 to get 26.25 then times it by 20 since this is the average of 50 throws and it's asking for the average of 1,000 throws which is 525

Answer:

the answer is 6 because when x=7 on the line it is also equal to 6 on the y axis

Answer:

A) Let f(x) represent the number of foster homes available after x months, and let g(x) represent the number of homeless pets after x months.

f(x) = 20 + 2x (since 2 additional people are expected to foster each month)

g(x) = 10(1.15)^x (since the number of homeless pets is growing at a rate of 15% per month)

Answer: L 38

Step-by-step explanation:

total 84

Answer: 48 small shirts

108 medium shirts

84 Large shirts

Step-by-step explanation:

20% of 240 = 48

45% pf 240 = 108

45 + 20 = 65, 100 - 65 = 35

35% of 240 = 84

And 48 + 108 + 84 = 240

Answer:

16+110=126 m²

Hope it helps :)

Answer:

Area of 1 st rectangle, length = 10m and breath = 15m

So using formula , rectangle = length × breadth

= 10 m × 15 m

=150^{2}

again,

Area of 2 st rectangle, length = 6m and breath = 4m

So using formula , rectangle = length × breadth

= 6 m × 4 m

= 24m^{2}

Now ,

Final area of whole box = 1^{st} area - 2^{nd} area

= 150m^{2} - 24m^{2}

= 126 m^{2} is answer

Here are the pairs matched with their products:

- (-5)(4.2) matches with -21

- (-7)(-3) matches with 21

- (2.5)(-9) matches with -22.5

Pairs (4) and (5) do not have corresponding products in the given options.

Considering area (A) of garden as 30 square feet:

30 = x(2x+7)

Now we need to expand it:

x(2x+7) = 2x^2 + 7x

2x^2 + 7x = 30

Adding this into an Algebra calculator gives us 5/2 or 2.5

So x = 2.5

To prove this:

2(2.5) + 7 = 12

14 * 2.5 = 30

The new height of the water container is equal to 66.7 centimeters.

For Container A:

For Container B:

First of all, we would determine the volume of the water in Container A:

Mathematically, the volume of a rectangular prism is given by this formula:

\(V = L \times W \times H\)

Where:

Substituting the given parameters into the formula, we have;

\(V = 25 \times 30 \times 40\)

V = 30,000 cubic centimeters.

Note: The volume of the two containers must be the same.

The new height:

\(30000=18\times 25 \times h\\\\30000=450h\\\\h=\frac{30000}{450}\)

h = 66.7 centimeters.

Read more on volume of a rectangular prism here: brainly.com/question/3867601

Answer:

2.73

Step-by-step explanation:

You could just divide.

Answer:

the answer is 2.73

Step-by-step explanation:

ur welcome brah

Answer: The chef bought 49.51 pounds of rice in all.

Step-by-step explanation:

Answer:

1. 30 cm^2

2. 40 cm^2

Step-by-step explanation:

Area = b * h for a parallelogram

Answer:

20

Step-by-step explanation:

The first step is to find out the similarity reason of the sides of the triangle, so we just divide the big side by the small side (12/4=3).

Now, for the similarity reason of the areas, we just square that number (3^2=9).

Then we just divide the area of the big triangle by 9, which is 180/9= 20.

Two figures are known as similar figures if there the corresponding angles are equal and the corresponding sider is in ratio. The area of the △DEF is 20cm².

Two figures are known as similar figures if there the corresponding angles are equal and the corresponding sider is in ratio. It is denoted by the symbol "~".

Given △ABC∼△DEF, therefore, the sides will be in a particular ratio,

Ratio = AB/DE = 12/4 = 3

Also, the area of △ABC is 180 square centimeters. since the area is a two-dimensional quantity it will be the product of two sides, therefore, the ratio will also be multiplied twice. Thus, the area of △DEF will be 1/9 of the area of △ABC. Hence, the area of △DEF is,

△DEF = △ABC/9

△DEF = 180cm²/9 = 20cm²

Hence, the area of the △DEF is 20cm².

Learn more about Similar Figures:

https://brainly.com/question/11315705

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Answer: 146

Step-by-step explanation:

You have to divide 876 by 6. Hope this helps :)

Answer:

A.............

Step-by-step explanation:

I think it helps you

Answer:

I think the answer is A because non of the other answers are confusing to me.

I hope this is helpful.

Step-by-step explanation:

Answer:

Please provide an image of the line plot so your question can be answered.

Option (D) 1 1/2 pounds

I got this question once in a quiz.

Answer:

WHY U ALWAYS LYINGGGG??? do u know that song?

Step-by-step explanation:in the parenthesis they both equal 4

Answer:

Step-by-step explanation:

They both equal 4

Answer:

x = 4 and y = 6

Step-by-step explanation:

With the way the equations are set up, substation is faster.

Just substitute -1/2x + 8 for the y in the first equation.

3x + 4(-1/2x + 8) = 36

And then you can just solve the equation. You would get x = 4.

Substitute 4 for x.

y = -1/2(4) + 8

y = 6

Answer:

?

Step-by-step explanation:

The slope tells us about A rate of $0.13 per minute.

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

Given:

Call in minutes     Cost

      5                     $0.65

     10                     $1.30

     15                     $1.95

     20                    $2.60

So, slope

= ( 1.30- 0.65)/ (10- 5)

= 0.65/5

=0.13

Hence, the slope tells us about A rate of $0.13 per minute.

Learn more about slope here:

https://brainly.com/question/3605446

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Answer: x=2π/3 and x=4π/3

Step-by-step explanation:

The equation we have is \(\sqrt{3-2cosx} =2\). All we have to do is get cosine alone to find the 2 values of x.

\(3-2cosx=4\\-2cosx=1\\cosx=-\frac{1}{2}\)

Now that we have our cosine left, we can use our unit circle to figure out when does cosx=-1/2. Cosine is the x value of the coordinate.

x=2π/3

x=4π/3

Answer:

6/36 or 1/6 simplified

Step-by-step explanation:

(1,6) (2,5) (3,4) (4,3) (5,2) (6,1)

Answer:

Brainliest pls

Step-by-step explanation:

Library (7, 8)

Market (-4, -2)

Bank (-4, 8)

School (10, 8)

Pool (7, 3)

Park (7, 1)