Angela bought a calculator on sale for 15% off. Sales tax is 7.5%. If the calculator cost x dollars, which expression represents the total cost of the calculator?A). (x-0.15) (0.075)B). (x-0.15) (1.075)C). (x-0.15x) (0.075)D). (x- .015x) (1.075)

Answers

Answer 1

Original price = x

Price with 15% off = x - 0.15x

Price with 15% off and 7.5% tax = (x - 0.15x)(1.075)

Answer:

Option B: (x - 0.15x)(1.075)


Related Questions

I need help with my homework pls be fast it’s 11pm for me and I couldn’t do this earlier because of family business

Answers

We have a linear function and we have to find the meaning of the slope.

The function is:

[tex]C=50h+35[/tex]

In this function the slope is m=50, as it is the coefficient for h, the number of hours.

The slope usually represents the variation of the result variable (in this case, the cost in dollars) and the independent variable (in this case, h, the number of hours).

Then, we can think of the slope in this model as the marginal hourly rate he charges. This means that any additional hour of work will cost $50 more.

Then, from the options given, the correct one is: the charge per hour [Option D].

The perimeter of a rectangle is 36 cm and the length is twice the width. What are the dimensions of this rectangle? What’s the length and width?

Answers

answer: 6*12

Perimeter = 2x + 2x + x + x = 6x. 6x = 36, so x = 6. The rectangle is 6*12, so area = 72 sq cm.

A medical experiment on tumor growth gives the following data table.



x y
61 48
95 76
97 82
101 95
115 118


The least squares regression line was found. Using technology, it was determined that the total sum of squares (SST) was 2640.8 and the sum of squares of regression (SSR) was 2429.8. Calculate R2, rounded to three decimal places.

Provide your answer below:

Answers

The calculation of the coefficient of determination, or rounded to three decimal places is 0.080.

What is the coefficient of determination (R²)?

The coefficient of determination, R², is a statistical measurement that determines the proportion of variance in the dependent variable that the independent variable can explain.

In other words, shows how well the actual data is approximated by the regression line.

R-Squared (R²) is widely used to predict future outcomes and for hypothesis testing because it provides information about the goodness of fit of the statistical model.

x         y

61      48

95     76

97     82

101    95

115    118

The total sum of squares (SST) = 2640.8

The sum of squares of regression (SSR) = 2429.8

R² = 1 - SSR/SST

R² = 1 - 2429.8/2640.8

R² = 1 - 0.92

R² = 0.080

R² = 8%

Thus, with R² = 8%, we can conclude that the y values are only accountable for 8% of the variation in x.

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Write a quadratic equationwith vertex (3,-6) and otherpoint (-7,14). Solve for a!

Answers

We have to find the parameter a of a quadratic equation knowing the following

• The vertex is (3,-6).

,

• A random point is (-7,14).

Based on the given information, we have the following

[tex]\begin{gathered} h=3 \\ k=-6 \\ x=-7 \\ y=14 \end{gathered}[/tex]

The vertex form of a quadratic equation is

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

Replacing all the givens, we have

[tex]14=a(-7-3)^2-6[/tex]

Now, we solve for a

[tex]\begin{gathered} 14=a(-10)^2-6 \\ 14=a(100)-6 \\ 14+6=100a \\ 100a=20 \\ a=\frac{20}{100}=\frac{1}{5} \end{gathered}[/tex]Therefore, a is equal to 1/5.

Check off all of the equations that would give infinitely many solution

Answers

All of the equations that would give infinitely many solutions are given as follows:

[tex]\begin{gathered} 1)\text{ 3x + 12 = 3x + 12} \\ 2)\text{ 2\lparen3x - 4\rparen = 6x - 8} \end{gathered}[/tex]

Thus the correct answer is option 3 and option 5.

Car Survey In a survey of 3,100 people who owned a certain type of car, 1,550 said they would buy that type of car again.
What percent of the people surveyed were satisfied with the car?
% of the people surveyed were satisfied with the car.
(Type a whole number.)

Answers

The percentage of people satisfied with car is 50.


What is percentage?
A number or ratio which can be expressed as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The percentage therefore refers to a part per hundred. Per 100 is what the word percent means. The letter "%" stands for it. There is no dimension to percentages. As a result, it is known as a dimensionless number. When we say a number is 50% of something, we mean that it is 50% of everything. As in 0.6%, 0.25%, etc., percentages can also be expressed as decimals or fractions. The grades earned in any subject have been calculated in terms of percentages in academics. Ram, for instance, scored 78% on his exam.

To find the percentage We divide 1550 by 3100 and then multiply by 100

We get

[tex]\frac{1550}{3100}*100\\=50[/tex]

Hence the percentage of people satisfied with the car is 50%

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a can of juice is 5.5 inches high and its base has a diameter or 6 inches what is the volume of the can? round to the nearest hundredth

Answers

According to the problem, the can of juice has the form of a cylinder, so we have to use the following formula

[tex]V=\pi(r)^2h[/tex]

Where the radius is half the diameter, r = 3 in, h = 5.5 in, and pi = 3.14. Replacing these values, we have

[tex]V=3.14\cdot(3in)^2\cdot5.5in=155.43in^3[/tex]Hence, the volume of the can is 155.43 cubic inches.

You start driving north for 5 miles, turn right, and drive east for another 12 miles. At the end of driving, what is your straight line dissonance from you r starting point?

Answers

You start driving north for 5 miles, turn right, and drive east for another 12 miles

The angle between north and east = 90

So, x is the hypotenuse of the triangle

[tex]x=\sqrt[]{5^2+12^2}=\sqrt[]{25+144}=\sqrt[]{169}=13[/tex]

so, the length = 13 miles

Find the length of line segment MN. Round to the nearest hundredths place.

Answers

First, look th the graph and set the coordinate of the points:

M = (mx,my)= (-1,2)

N = (nx,ny)= (4,0)

Now, apply the distance formula:

[tex]\text{Distance =}\sqrt[]{(mx-nx)^2+(my-ny)^2}[/tex]

Replace with the coordinates:

[tex]D\text{ =}\sqrt[]{(-1-4)^2+(2-0)^2}[/tex][tex]D=\sqrt[]{(-5)^2+2^2}=\sqrt[]{25+4}=\sqrt[]{29}\text{ =5.3}9[/tex]

Distance: 5.39

INT. ALGEBRA: You have a coupon for $20 off the purchase of a calculator. At the same time, the calculator is offered with a discount of 20%, and no further discounts apply. For what price on the calculator do you pay the same amount for each discount?

Thank you for your help, and please do show work! I will be looking to give the Brainliest answer to someone!

Answers

X=180.15x= 18x =120 so the answer is 120

3.615 x 4 regrouping

Answers

3.615x4 is 14.46 that’s my answer

Real estate prices in a Denver neighborhood areNormally distributed with a mean price of $187,500 and astandard deviation of $12,500.ALDenver Neighborhood Real Estate Pricing

Answers

[tex]\begin{gathered} \text{Given} \\ \mu=187500 \\ \sigma=12500 \\ x_1=150000 \\ x_2=225000 \end{gathered}[/tex]

First, find the z-score of the two values $150,000 and $225,000

[tex]\begin{gathered} \text{z-score for }x_1 \\ z=\frac{x-\mu}{\sigma} \\ z=\frac{150000-187500}{12500} \\ z=\frac{-37500}{12500} \\ z_1=-3 \\ \; \\ \text{z-score for }x_2 \\ z=\frac{x-\mu}{\sigma} \\ z=\frac{225000-187500}{12500} \\ z=\frac{37500}{12500} \\ z_2=3 \end{gathered}[/tex]

Since the z-scores are both 3 standard deviations away from the mean, by Emperical rule, we conclude that about 99.7% of the homes will be priced between $150,000 and $225,000.

A bag of marbles contains 6 blue marbles, 2 yellow marbles, 4 red marbles, and 1 green marble. What is the
probability of reaching into the bag and selecting a yellow marble?
73.
13
16
26

Answers

Answer:

2/13

Step-by-step explanation:

Out of a total 13 marbles , 2 are yellow     2 out of 13 = 2/13

Answer:

2/13

Step-by-step explanation:

6 blue marbles, 2 yellow marbles, 4 red marbles, and 1 green marble = 13 marbles

P( yellow) = number yellow / total

                 = 2/13

which question is best modeled with a division expression?
how many 3/8's are in 48
what is 3/8 of 48
what is the total of 3/8 and 48
how much more than 3/8 is 48

Answers

The question that can be best modeled as a division expression is how many 3/8's are in 48.

What is division?

Division is the process of dividing a number into equal parts using another number. The sign used to denote division is ÷. Division is one of the basic mathematical operations. The other mathematical operations are addition, multiplication and division.

In order to determine the 3/8's in 48, divide 48 by 3/8.

In order to determine 3/8 of 48, multiply 48 by 3/8.

In order to determine the total of 3/8 and 48, add the numbers together.

In order to determine how much more than 3/8 is 48, subtract 3/8 from 48.

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Write an equation for the line through the point (x0,y0) with a slope of M in point slope form. Enter X0 and Y0 as y0. Use X and Y for variables names. Your equation should be of the form y=….

Answers

The equation of the line in point slope form is  y = M(x - x₀) + y₀ .

The Point slope form of the line passing through the point (x₁,y₁) with slope m is given by the formula

(y - y₁) = m(x - x₁)

In the question ,

it is given that

the required line passes through the points (x₀ , y₀)

and the slope is M .

So, the point slope form equation of the line will be

( y - y₀) = M(x - x₀)

y - y₀ = M(x - x₀)

y = M(x - x₀) + y₀

Therefore , the equation of the line in point slope form is  y = M(x - x₀) + y₀ .

The given question is incomplete , the complete question is

Write an equation for the line through the point (x₀,y₀) with a slope of M in point slope form. Your equation should be in the form of y = ...    ?

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express the quadratic function f(x)=3x^2 + 6x - 2 in the form a(x + h)^2 + k where a,h and k are constants

Answers

Answer:

Explanation:

Given:

[tex]f(x)=3x^2+6x-2[/tex]

First, we do completing the square on the given function to express it into vertex form. So,

We write it in the form:

[tex]\begin{gathered} x^2+2ax+a^2 \\ \end{gathered}[/tex]

And, factor out 3: So,

[tex]\begin{gathered} 3(x^2+2x-\frac{2}{3}) \\ \text{where:} \\ 2a=2\text{ or a=1} \\ \text{Hence} \\ 3(x^2-2x-\frac{2}{3}+1^2-1^2) \end{gathered}[/tex]

Since:

[tex]\begin{gathered} x^2+2ax+a^2=(x+a)^2 \\ So, \\ x^2+2x+1^2=(x+1)^2 \end{gathered}[/tex]

Then,

[tex]\begin{gathered} 3(x^2-2x-\frac{2}{3}+1^2-1^2) \\ =3((x+1)^2-\frac{2}{3}-1^2) \\ \text{Simplify} \\ f(x)=3(x+1)^2-2-3 \\ f(x)=3(x+1)^2-5 \end{gathered}[/tex]

Therefore, the answer is:

[tex]f(x)=3(x+1)^2-5[/tex]

For each value of v, determine whether it is a solution to -96= -8(v +7)

Answers

Solution for v =5
Everything else is no

In a music class of 20 students, there are 12 who play the Guitar (G), 7 who play the Piano (P) and 4 who do not play any of these instruments.1)Represent this situation using a Venn diagram2)What is the probability no randomly selected student plays guitar and piano3)What is the probability that no randomly selected student plays either of these two instruments?4) How likely is it that no randomly selected student plays the piano

Answers

GIVEN:

Total number of students: 20

Number that plays the Guitar: 12

Number that plays the Piano: 7

Number that does not play any of the instruments: 4

Note that included in the number that plays either the guitar and the piano is the number that plays both instruments. Let's call this number x.

Number that play both instruments: To calculate this number, we have to get the number that plays each instrument alone and find the sum equated to the total number of students.

Number that plays the Guitar only: 12 - x

Number that plays the Piano only: 7 - x

Therefore, the total number of students will be:

[tex]\begin{gathered} 12-x+7-x+x+4=20 \\ 23-x=20 \\ \therefore \\ x=23-20 \\ x=3 \end{gathered}[/tex]

Hence, there are 3 students that play both instruments.

Therefore, 9 students play the guitar only and 4 students play the piano only.

VENN DIAGRAM:

QUESTION 2:

The formula to calculate the probability of an event E is given to be:

[tex]P(E)=\frac{n(E)}{n(U)}[/tex]

where

[tex]\begin{gathered} P(E)=\text{ Probability of event E happening} \\ n(E)=\text{ Number of times event E happened} \\ n(U)=\text{ Number of times all possible events occured} \end{gathered}[/tex]

The number of students that play the guitar and piano is 3. This means that the number that does not play the guitar and piano is

[tex]\Rightarrow20-3=17\text{ students}[/tex]

Therefore, the probability is given to be:

[tex]P=\frac{17}{20}[/tex]

QUESTION 3:

This question requires us to find the probability of students that do not play any of the two instruments. This number is 4.

Therefore, the probability is given to be:

[tex]P=\frac{4}{20}=\frac{1}{5}[/tex]

QUESTION 4:

The number of students that play the piano is 7. Hence, the number that doesn't play the piano will be:

[tex]\Rightarrow20-7=13[/tex]

Therefore, the probability is:

[tex]P=\frac{13}{20}[/tex]

Evaluation the expression -19-9-(11)

Answers

[tex]-19-9-(-11)=-19-9+11=-19+2=-17[/tex]

Then the final answer will be -17.

Simplify the given expression into the form a+bi, where a and b are rational numbers?

Answers

Given:

2(-36- 3i )+ (5+2i)(12-2i)

Open the parenthesis

2(-36- 3i) + 5( 12 - 2i) + 2i ( 12 - 2i)

- 72 - 6i + 60 - 10i + 24i + 4 ( Note: i² = -1)

Re-arrange

-72+60 + 4 - 6i - 10i + 24i

= -8 + 8i

HELP HELP! PLEASE, MY MOM WANT ME TO BE DONE!

Answers

Answer:

From least to greatest, we have:

2 to 3, 3:4, and 7/8

Explanation:

Given the following:

7/8, 2 to 3, and 3:4

The least is 2 to 3, followed by 3:4, then 7/8

Please help with this

Answers

Answer:

228

Step-by-step explanation:

Top 6x 6 = 36

4 sides 4(6x8)

4(48)

192

192 + 36 = 228

Answer:264

Step-by-step explanation: the surface area is every side added together and you calculate each side by multiplying the width height and length

Hello good night everyone I need help with number 6 I’m so lost I’m abt to cry

Answers

We have to add and substract this complex numbers.

In this type of problems, where we have to add or substract complex numbers, we need to have the real and imaginary terms separated.

In this case, we already have all the terms as real or imaginary.

Then, we can group the real terms on one side and the imaginary terms on the other side and simplify them. We can do it like this:

[tex]\begin{gathered} (7-2i)-(-1-4i)+3 \\ 7-2i+1+4i+3 \\ (7+1+3)+(-2i+4i) \\ 11+2i \end{gathered}[/tex]

Answer: 11 + 2i

Company operates stores under multiple banners in 13 states in the United States

Answers

Given:

Banners in 13 states in united states:

Total states in united state is 50.

(A)

Do not have store is:

[tex]\begin{gathered} =50-13 \\ =37 \end{gathered}[/tex]

So in 37 states Company not operates any store.

(B)

Fraction do not have a store operates :

[tex]\begin{gathered} =\frac{37}{50} \\ =0.75 \end{gathered}[/tex]

Beginning in 1995,( 1995= 0 years) the Chicago Cubs decreased its ticket price by a constant amount each year until 2016 when they finally won the World Series. A ticket cost $77.50 in 2005, but only $49.50 in 2012. How much did a ticket cost in 2000?

Answers

The cost of the Chicago Cubs ticket in the year 2000 was $97.50.

What is defined as the constant rate of change?A rate of change is defined as the ratio of change in dependent values as well as outputs to change in independent variables or inputs. The change, also known as the function's slope, describes what numbers change between 2 points on the a coordinate plane.

For the given question.

The price of the Chicago Cubs ticket in year 2005 is $77.50.

The price of the ticket reduced in year 2012 as $49.50.

There is a constant amount of decrease in the price.

Thus, difference in years;

= 2012 - 2005

= 7 years.

Difference in amount;

= 49.50 - 77.50

= -28

Price decreased in one year = 28/ 7 = -4 per year.

For the price of the ticket in the years 2000.

= 2005 - 2000

= 5 years.

Price decreased in 5 years is;

= -4 x 5

= -20

The price is 2000 is 77.50 + 20 = 97.50

Thus, the cost of the Chicago Cubs ticket in the year 2000 was $97.50.

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How do you solve this?

Answers

Answer: B

Step-by-step explanation:

Answer: The answer is B

Step-by-step explanation:

Yea I can see if it works if it’s okay

Answers

SOLUTION

We want to find the derivative of

[tex]y=sin(1.2t-3.7)[/tex]

(a) So, using chain rule, the inside function is u,

we have the inside:

[tex]u=1.2t-3.7[/tex]

outside becomes

[tex]y=sin(u)[/tex]

(b) The derivative of

inside, we have

[tex]\frac{du}{dt}=1.2[/tex]

derivative of the outside, we have

[tex]\frac{dy}{du}=cos(u)[/tex]

chain rule we have

[tex]\begin{gathered} \frac{dy}{dt}=\frac{dy}{du}\times\frac{du}{dt} \\ =cos(u)\times1.2 \\ =cos(1.2t-3.7)\times1.2 \end{gathered}[/tex]

Hence the answer is

[tex]\frac{dy}{dt}=1.2cos(1.2t-3.7)[/tex]

Painter charges $20 every hour that he paints let H represent the number of hours he paints & E represent his earnings select all statements that are trueA. The equation H equals 20 E shows the correct relationship between the earnings and hours worked B. With this hourly rate the painter must work more than 12 hours to earn 500C. With this hourly rate the painter earns 20h dollars for each hour worked.D. With this hourly rate if the painter works 10 hours he earns 20.E. Is the painter raises his hourly rate by two dollars the new equation is e=22h

Answers

Answer:

No.

Yes.

Yes.

No.

Yes...

in a hurry! have to finish the practice test in 30mins, so I can take the real one!(CHECKING AWNSERS, SO ONLY NEED AWNSERS TO I CAN COMPARE)

Answers

The expression can be simplified as,

[tex]\begin{gathered} \frac{3}{x+2}+\frac{2}{x-3}=\frac{3(x-3)+2(x+2)}{(x-3)(x+2)} \\ =\frac{3x-9+2x+4}{(x-3)(x+2)} \\ =\frac{5x-5}{(x-3)(x+2)} \end{gathered}[/tex]

Thus, option (D) is the correct option.

Geometry ? What is the coordinate of G if triangle E’F’G’ is created by dilating EFG with a scale factor of 4 about the origin

Answers

In order to dilate the figure around the origin by a scale of 4, we need to multiply the coordinates of each point by 4. This is done below:

[tex]\begin{gathered} F^{\prime}=(4\cdot-1,4\cdot2)=(-4,8) \\ G^{\prime}=(4\cdot2,4\cdot-2)=(8,-8) \\ E^{\prime}^{}=(4\cdot-2,,4\cdot0)=(-8,0) \end{gathered}[/tex]

The coordinates are: F'(-4, 8), G'(8,-8) and E'(-8,0).

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Twenty years ago a small town in texas had a population of 10,000. the population has increased 8% each year since then. what equation would be used to solve this population growth problem? a. p = 20 (10,000) superscript .08 b. p = 10,000 (8) superscript 20 c. p = 10,000 (20) superscript 1.08 d. p = 10,000 (1.08) superscript 20 Solve this system of linear equations. Separatethe x- and y-values with a comma.7x - by = -414x + 5y = 43 It is difficult for nika to believe that her brother spends fifteen minutes eating a jelly donut. he would finish faster if he didn't carefully split the pastry and scoop out the filling with a spoon before eating the crust. Liz is collecting aluminum cans for a school fundraiser. So far, she has collected 16 cans, which is 20% of her goal. How many cans must she collect to reach her goal?Parts A & B "conceived" and "nation" have the connotative meaning of. ("gettysburg address")A. honoring the deadB. being bornC. the brave men D. unfair decisions Figure 1 and Figure Il are similar figures. Figure I Figure II R S B F C w T E D V U Which proportion must be true? Where are the minimum and maximum values for f(x)A. min: x =2 2Reset Selectionmax:z = = 0, , 2OB. min:z = max:x = 0, 2OC. min:z = 0, 2 max:x = OD. min:z = ,,max:x = 0, 3, 4,2=- 3 cos z - 2 on the interval [0, 2]?2P the government of burginville has run a deficit of $20 million which it intends to pay for by issuing new government bonds. what impact will this action have on the bond market and the market for loanable funds? Try This question out and Ill give you brainliest no links or I will report you 9) According to the article, what is a major test of every democratic nation after presidentialelections? what expression can be used to add 1/2 plus 5/6? the inelastic segment of the demand curve part 2 a. is coincident with the vertical axis. b. is coincident with the horizontal axis. c. lies below the midpoint of the curve. d. lies above the midpoint of the curve. . . . question content area right part 1 quantity price midpoint demand Find the missing length of the triangle. 22 cm 17.6 cm The missing length is centimeters. 35.A substance that affects the speed of a chemical reaction without itself being chemically changed is called a...Select one:a. catalyst.b. product.c. reactant.d. yield. which substance is secreted primarily by the stomach cells and promotes eating and weight gain by increasing smell sensitivity, stimulating appetite, and promoting efficient energy storage? a. lipoprotein lipase (lpl) b. ghrelin c. cholecystokinin (cck) d. leptin The table gives a set of outcomes and their probabilities. Let A be the event "the outcome is a divisor of 6". Find P(A). Outcome Probability 1 0.044 2 0.065 3 0.194 4 0.304 5 0.103 6 0.003 7 0.102 8 0.004 9 0.095 10 0.086 Marco charges $42.99 for arepair that takes 2 hours.Marco charges $87.99 for arepair that takes 5 hours.for the slope and y intercept which graph show the solution set for -1.1+6.4>-1.3 6+[(-9)+(-1)] what does this equal I need help if you don't mind. I have to graph the linear equation using intercepts.