The original selling price of a single share of stock was d dollars. The selling price for a share of the same stock on a later date was represented by the expression 0.8(1.25d). Which description could explain what happened to the price of the share of stocks? A. The price increased by 25% and then decreased by 20%. B. None C. The price increased by 1.35% and then decreased by 15%. D. The price increased by 135% and then decreased by 85%. E. The price increased by 35% and then decreased by 0.15%.

i think that its is w,k,j. i could be wrong though

The girl walked a distance of [tex]\boxed{{\mathbf{5 miles}}}[/tex]  in her way.

Further explanation:

The time can be calculated as,

[tex]{\text{ time}}=\frac{{{\text{distance}}}}{{{\text{speed}}}}[/tex]  

Given:

It is given that a girl stands 20 miles away from the school at [tex]6:50{\text{ am}}[/tex]  and she started walking at the rate of [tex]3{\text{ mi/hr}}[/tex]  and then after some time her dad pick up and he drives at the rate of [tex]30{\text{ mi/hr}}[/tex] . They reach the school at [tex]9:00{\text{ am}}[/tex] .

Step by step explanation:

Step 1:

Consider [tex]x[/tex]  as the distance she walked in her way.

The speed of the girl when she walked is [tex]3{\text{ mi/hr}}[/tex] .

Now use the formula of time to obtain the walk time.

[tex]\begin{gathered}{\text{ walktime}}=\frac{{{\text{distance walked}}}}{{{\text{walking speed}}}}\hfill\\{\text{ walktime}}=\frac{x}{3}\hfill\\\end{gathered}[/tex]

Since the total distance is [tex]20{\text{ miles}}[/tex] .

Then consider [tex]20-x[/tex]  as the distance driven by the car.

The driving speed is [tex]30{\text{ mi/hr}}[/tex] .

Now use the formula of time to obtain the drive time.

[tex]\begin{gathered}{\text{drive time}}=\frac{{{\text{distance travelled by car }}}}{{{\text{ speed of car}}}}\hfill\\{\text{drive time}}=\frac{{20-x}}{{30}} \hfill\\\end{gathered}[/tex]

Step 2:

Now we calculate the total time took by girl to reach the school.

  [tex]9:00-6:50={\text{2 hrs 10 min}}[/tex]

Now convert the timing into hours as,

[tex]\begin{aligned}2{\text{ hours 10 minutes}}&=2+\frac{{10}}{{60}}\\&=2\frac{1}{6}\\&=\frac{{13}}{6}{\text{ hrs}}\\\end{aligned}[/tex]

Step 3:

Total time is the sum of drive time and walk time.

The total time can be expressed as,

[tex]\frac{x}{3}+\frac{{20-x}}{{30}}=\frac{{13}}{6}[/tex]

Now solve the above equation by cross multiply method.

[tex]\begin{aligned}\frac{x}{3}+\frac{{20-x}}{{30}}&=\frac{{13}}{6}\hfill\\\frac{{10x+20-x}}{{30}}&=\frac{{13}}{6}\hfill\\\frac{{9x+20}}{{30}}&=\frac{{13}}{6}\hfill\\6\left({9x+20}\right)&=13\left({30}\right)\hfill\\\end{aligned}[/tex]

Now simplify the further equation.

[tex]\begin{aligned}6\left({9x+20}\right)&=13\left({30}\right)\hfill\\54x+120&=390\hfill\\54x&=390-120\hfill\\54x&=270\hfill\\\end{aligned}[/tex]

Simplify the further equation.

[tex]\begin{aligned}54x&=270\hfill\\x&=\frac{{270}}{{54}}\hfill\\x&=\frac{{45}}{9}\hfill\\x&=5\hfill\\\end{gathered}[/tex]

Therefore, the girl walked 5 miles.

Learn more:  

Answer details:

Grade: High school

Subject: Mathematics

Chapter: Speed, distance and time

Keywords: girl, distance, drive, walk, drive time, dad, speed, travelled, formula, cross multiply, fraction, number, multiply, addition, subtraction, equation, school

Answer:

5 miles

Step-by-step explanation:

Answer: p(x) = steeper

               q(x) = less steep and reflection

               r(x) = reflection

Step-by-step explanation:

The parent graph is: f(x) = 1.5x³

p(x):  2 > 1.5 , so it is stretched (steeper).

p(x): coefficient has a positive sign, so it is NOT a reflection

q(x):  1  < 1.5 , so it is shrunk/compressed (less steep).

q(x): coefficient has a negative sign, so it is a reflection over x-axis

r(x): 1.5 = 1.5 so it is neither a stretch or a shrink

r(x): coefficient has a negative sign, so it is a reflection over x-axis

The graph of the function f(x) = 1.5x^3 has a steep increase or decrease, exhibits symmetry, and passes through the origin.

When comparing the graphs of different functions, it's important to analyze their key characteristics. In the case of the function f(x) = 1.5x^3, the graph will be a cubic function. Here are three significant differences between the graph of f(x) = 1.5x^3 and other functions:

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Answer:

(x-7)(x+6)

Step-by-step explanation:

The solution of the equation is -6 and 7 for factorization of the given polynomial [tex]x^{2} - x - 42[/tex].

Given equation :-   [tex]x^{2} - x - 42[/tex]

For finding factors of the equation, we have equate the given polynomial with zero.

∴    [tex]x^{2} - x - 42 = 0[/tex]

Factorizing the above equation,

⇒   [tex]x^{2} - 7x + 6x - 42 = 0[/tex]

⇒   [tex]x (x -7) + 6(x - 7) = 0[/tex]

⇒   [tex](x + 6)(x - 7) = 0[/tex]  

∴ Either x + 6 = 0  or  x - 7 = 0  

∴ x1 = -6  and  x2 = 7

Where x1 and x2 are the respective factors of the given polynomial in the question.

Thus, the solution of the equation is -6 and 7 for factorization of the given polynomial [tex]x^{2} - x - 42[/tex].

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Answer:

[tex]13\frac{1}{3}[/tex] cups

Step-by-step explanation:

We are told that a recipe calls for one half cup of ingredient A for every 1 and two thirds cups of ingredient B.      

To find the number of cups of ingredient B we will use proportions.

[tex]1\frac{2}{3}=\frac{5}{3}[/tex]

[tex]\frac{\text{Number of cups of ingredient A}}{\text{Number of cups of ingredient B}} =\frac{\frac{1}{2}}{\frac{5}{3}}[/tex]

[tex]\frac{\text{Number of cups of ingredient A}}{\text{Number of cups of ingredient B}} =\frac{3}{10}[/tex]  

Now let us substitute our amount of Ingredient A =4 in our proportions.

[tex]\frac{4}{\text{Number of cups of ingredient B}} =\frac{3}{10}[/tex]

[tex]\frac{\text{Number of cups of ingredient B}}{4}=\frac{10}{3}[/tex]

Multiplying both sides of our equation by 4.

[tex]4*\frac{\text{Number of cups of ingredient B}}{4}=4*\frac{10}{3}[/tex]

[tex]\text{Number of cups of ingredient B}=\frac{40}{3}[/tex]

[tex]\text{Number of cups of ingredient B}=13\frac{1}{3}[/tex]

Therefore, we need [tex]13\frac{1}{3}[/tex] cups of ingredient B to make our recipe.

Answer:

Proportion states that the  two ratios are equal.

Given statement: A recipe calls for one half cup of ingredient A for every 1 and two thirds cups of ingredient B. You use 4 cups of ingredient A.

By using proportion definition to find ingredients B;

[tex]\frac{\frac{1}{2} }{1\frac{2}{3} } = \frac{4}{B}[/tex]

Simplify:

[tex]\frac{\frac{1}{2} }{\frac{5}{3}} = \frac{4}{B}[/tex]

By cross multiply we get;

[tex]B \cdot \frac{1}{2} = 4 \cdot \frac{5}{3}[/tex]

or

[tex]\frac{B}{2} = \frac{20}{3}[/tex]

Multiply both sides by 2 we get;

[tex]B = \frac{20}{3} \times 2 = \frac{40}{3} = 13\frac{1}{3}[/tex]

Therefore, [tex]13\frac{1}{3}[/tex] cups of ingredients B needs.

The answer of this one is 9-c

Answer:

11 adult tickets

Step-by-step explanation:

I guess you want the number of adult tickets sold.

That is 20% of 55

= 0.20*55

= 11 (answer)

Answer:

the answer is 11

Step-by-step explanation:

I did the math its 11

Answer:

From Online Buying is more suitable

The difference between per diaper price is $0.04

Step-by-step explanation:

Given:

56 diapers can be bought for $ 28

and

online 112 diapers for $ 52

TO find:

Better deal = ?

Per diaper save= ?

Solution:

Let the first type be x

Now for x

Price of 56 diapers are $ 28

Price of one diaper = [tex]\frac{28}{56}[/tex]

                                 =$0.5 / diaper

Now for online let it be represented by O

Price of 112 diapers are $52

Price of one diaper = [tex]\frac{52}{112}[/tex]

                                 =$0.46 / diaper

Price of one diaper from online is less then price of one diaper from we bought not online

Difference of per diaper price = 0.5 - 0.46

                                                  =$0.04

So buying diapers from online would be suitable

Answer:

1,

3

Hope I helped thankssss

Step-by-step explanation:

[tex]h(x)=(6x-14)^8=[g(x)]^8\\\\f(x)=x^8\\\\g(x)=6x-14\\\\(f\ \circ\ g)(x)=(6x-14)^8[/tex]

Answer:

the first one is 371 and the second one is 46

Step-by-step explanation:

Answer:

side of the octagon = 46.38 mm

Perimeter of the octagon = 371.04 mm

Step-by-step explanation:

Area of octagon = 10,391.9 mm²

But, area of octagon is given by the formula = 2(1 + √2)side²

⇒ 2(1 + √2)side² = 10391.9

⇒ 4.83 × side² = 10391.9

⇒ side² = 2151.53

⇒ side of the octagon = 46.38 mm

Perimeter of the octagon = 8 × side

⇒ Perimeter of the octagon = 8 × 46.38

⇒ Perimeter of the octagon = 371.04 mm

Answer:

Red = 30 drops

Blue = 20 drops

Step-by-step explanation:

The ratio red to blue is 3 : 2

Sum of ratios = 3 + 2 = 5

Required purple paint = 50 gallons

So,

[tex]Multiplier = \frac{50}{5} = 10[/tex]

Now, Red drops = 3×10 = 30

Blue drops = 2×10 = 20

Answer:

Step-by-step

Answer:

The answer is B, I just took the test.

Step-by-step explanation:

Answer:

hello there the answer is b hope this helps

Step-by-step explanation:

Answer:

Step-by-step explanation:

the answer is 26

Answer:

45 units^2

Step-by-step explanation:

Think of this polygon as being the combination of a rectangle and a triangle. The rectangle is at the bottom. It has length 9 and width 2.

The triangle is above it. Its base is also 9 like the rectangle's length. The height of the triangle is the segment from point (2, -1) to (2, 4). The length of the height is 6.

Now use the area formulas for a rectangle and a triangle to find the two areas and add them,

Rectangle: A = LW

Triangle: A = bh/2

Total area = LW + bh/2

Total area = 9 * 2 + 9 * 6/2

Total area = 18 + 54/2

Total area = 18 + 27

Total area = 45 units^2

An3x=2x+1

subtract 2x from both sides

x=1 answer

Step-by-step explanation:

it will only take one day

Answer:

a * b^(n-1)

Step-by-step explanation:

I guessed and got it right :/

Answer:

After 15 month of membership, Brian will pay $164.5 and Seth will pay $100.

Step-by-step explanation:

Brian

y=9.50(15)+22

y=142.5+22

y=164.5

Seth

(15,100)

Hi there! :)

Answer:

$4.06 of taxes is added on an item that costs $56.00 is the sales tax rate is 7.25%.

Step-by-step explanation:

You are looking for 7.25% of $56.00

7.25% is the same thing as 7.25/100, which is the same thing as 7.25 ÷ 100

7.25 ÷ 100 = 0.0725

The word "of" is the same thing as a multiplication sign (×).

SO, 7.25% of $56.00 = 0.0725 × 56

0.0725 × 56 = 4.06 ⇒ YOUR ANSWER

There you go! I really hope this helped, if there's anything just let me know! :)

The tax on that item will be 4.06$.

A tax is a necessary fee or financial charge imposed by a government on an individual or an organization in order to raise funds for public works projects that provide the greatest services and infrastructure. The gathered funds are subsequently utilized to finance other government activities.

Given, The sales tax rate is 7.25%. for an item whose cost is 56.00$.

Tax added on that item  = 56* 7.25%

Tax added on that item  = 4.06$

Therefore, the total tax added on the item whose total value is 56 will be 4.06$.

Learn  more about tax here:

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Answer:

Step-by-step explanation:

From a calculator your answer in the picture.

Answer:

m = 4√2

Step-by-step explanation:

This is a right angled isosceles triangle whose sides are in the ratio 1:1:√2.

So = 8 / √2

= 8 *√2 / 2

= 4√2

Answer:

-60 3/4m

Step-by-step explanation:

The diver first dives down 50 1/4m, which is represented by the -50 1/4m. He then descends another 10 1/2m down. So -50 1/4m - 10 1/2m.

-50-10=-60

-(1/4)-(1/2)= (1/4)+(1/2)

(1/4+1/2)=(2/8+4/8) you can only add with the same denominators.

=6/8 (simplifies down to 3/4)

1) [tex]x+2=\sqrt{3x+10}[/tex]

Square both sides to get

[tex](x+2)^2=(\sqrt{3x+10})^2\implies x^2+4x+4=3x+10\implies x^2+x-6=0[/tex]

Factorize and solve:

[tex]x^2+x-6=(x+3)(x-2)=0\implies x=-3,x=2[/tex]

2) I assume we take [tex]\sqrt x[/tex] to be defined only for [tex]x\ge0[/tex]. Under this condition, a solution would be extraneous if [tex]\sqrt{3x+10}[/tex] is undefined, which happens if [tex]3x+10<0[/tex].

If [tex]x=-3[/tex], then [tex]3x+10=-9+10=1[/tex], so it is not extraneous.

If [tex]x=2[/tex], then [tex]3x+10=6+10=16[/tex], so it is not extraneous.

So there are not extraneous solutions to this equation.

3) Lots of information on this on the web...

The solution for the given equation is x=2. -3 is an extraneous solution caused by the squaring operation and it doesn't satisfy the original equation. An extraneous solution is a solution that does not satisfy the original equation.

To find the solution of the equation x+2=√(3x+10), we first square both sides to eliminate the square root: (x+2)2=3x+10.

This simplifies down to x2 + 4x + 4=3x+10. Rearranging terms then gives us x2 + x - 6=0. The solutions of this quadratic equation are x=2 and x=-3.

However, if we substitute x=-3 back into the original equation, it does not hold true. Thus, -3 is an extraneous solution. This extraneous solution arises in this case because we applied the squaring operation, which is not a reversible process. An extraneous solution, generally, is a solution to a transformed equation that does not satisfy the original equation.

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There was no increase. There was actually a decrease of people in the population. If you are asking for the percent of decrease, the answer is 3200/25000=0.128 0.128*100=12.8%.

9 groups because thats the greatest common denominator

Answer:

The vertex form of the function is [tex]f(x)=(x-1)^2+3[/tex].

Step-by-step explanation:

The given function is

[tex]f(x)=4+x^2-2x[/tex]

The vertex form is

[tex]f(x)=(x-h)^2+k[/tex]

Rewrite the given function

[tex]f(x)=(x^2-2x)+4[/tex]

[tex]-\frac{b}{2a}=-\frac{-2}{2(1)}=1[/tex]

Add and Subtract [tex](-\frac{b}{2a})^2[/tex].

[tex]f(x)=(x^2-2x+1)+4-1[/tex]

Use [tex](a-b)^2=a^2-2ab+b^2[/tex]

[tex]f(x)=(x-1)^2+3[/tex]

Therefore the vertex form of the function is [tex]f(x)=(x-1)^2+3[/tex].

Answer: A on Edge 2020

Step-by-step explanation:

Answer:

Colby makes more money by teaming with Danielle

Step-by-step explanation:

Colby's income =f(x) = 3x+12

and Danielle's income = g(x) = 5x+10

If they combine their efforts the combined income would be

h(x) = 3x+12+5x+10 = 8x +22

If shared equally between them

Colby would get 1/2(8x+22) = 4x+11  and

Danielle would get  1/2(8x+22) = 4x+11

Since given they worked each for 4 hours

Colby income = Danielle income= 4(4) +11 = 27

If not combined, then

Colby income 3(4) + 12=24 and

Danielle income= 5(4) +10 = 30

Because of combining Colby makes more money by teaming with Danielle.

The difference is 3 for 4 hours work.

Answer:

B

Step-by-step explanation:

team with Danielle , h(x)=8x+22

Answer:

.5 inches a month

Step-by-step explanation:

52 - 43 = 9 inches

9/18 = .5

Answer:

0.5 inches a month

Step-by-step explanation:

subtract 43 from 52 and divide that answer by 18

52-43=9 9÷18=0.5

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There are 8 pints in 1 gallon, so 50×8 = 400 pints in 50 gallons.

400 × 3 red drops = 1200 red drops

400 × 2 blue drops = 800 blue drops

Answer:

y=6x+1

Step-by-step explanation:

First you must find the slope of the two points...

[tex]\frac{4--3}{-23-19}[/tex] which then would equal 6

Then you take the slope and put into point-slope form

(y-y1)=m(x-x1)...take one of the points that is given and plug it into this formula.

so I used (-3,19).

(y-19)=6(x--3)

I would then get y-19=6x+18

Add 19 to both sides and you will get y=6x+1

She saves $100.She saves 10% more.They want to know how much they will save after 6 months. Multiply 10% by 6months and you get 60%.Then you multiply the answer of .60 (60%) by 100 and you get 60. Lastly, since you wanna know how much you saved,subtract $100-60 and your final answer you get is that she saves $40.Hope that helped!