A laptop computer sells for $850. the sales tax is 7%. what is the total cost of the laptop?

Answers

Answer 1

Answer:

$909.50

Step-by-step explanation:

$850 x 7% = $59.50 (tax amount)

850 x (1+ 0.07) = $909.50


Related Questions

John invested $400 in a savings account. How much interest will he earn in 5 years if the imterest rate is 7%?

Answers

I=prt....i=400*0.07*5=?????
400 * 5 * 0.07 = 140

answer: John will earn $140 of interest in 5 years

show that cos(3theta) = cos^3(theta)-3 cos(theta)sin^2(theta) ... use this to find an equation in rectangular coordinates for the curve r= 4 cos (3theta)......


ANY HELP ? ...?

Answers

First, the angle sum forumlas:sin(α+β)=sinαcosβ+sinβcosαcos(α+β)=cosαcosβ−sinαsinβSo,cos(3θ)=cos(2θ+θ)=cos(2θ)cosθ−sin(2θ)sinθ=(cos2θ−sin2θ)cosθ−(2sinθcosθ)sinθ
From there, it's distribute and simplify...

2/3 of a circle is what percent of a circle

Answers

I hope this helps you




360.2/3=240



if 360 240


100 ?



?.360=240.100


?=66,6

The recipe calls for 1 egg, which makes 8 slices of pumpkin pie. how many eggs would be needed to make 56 slices of pumpkin pie ?

Answers

1 / 8 = x / 56
cross multiply
8x = 56
x = 56/8
x = 7 eggs are needed to make 56 slices

To find the number of eggs needed for 56 slices of pumpkin pie when the recipe calls for 1 egg for 8 slices, simply set up a proportion and solve. In this case, you would need 7 eggs for 56 slices of pie.

To determine how many eggs are needed to make 56 slices of pumpkin pie, we use a proportion. Given that 1 egg makes 8 slices of pie, we set up the proportion as follows:

1 egg / 8 slices = x eggs / 56 slices

Solving for x, which represents the number of eggs needed for 56 slices, we get that x = 7 eggs.

If there is a positive correlation between salary and education, then based on the table shown, which of the following careers requires the least education?


a. accountant
b. architect
c. pharmacist
d. surveyor

Answers

Answer:

D


Step-by-step explanation:

The horizontal axis of the graph is Salary.

Given there is a positive correlation between salary and education, means that as if education increase, salary increase OR if education decrease, salary decrease, and vice versa.


Out of the 4 choices, they wanted to know the one that requires LEAST education. So we will look at the bar that has LEAST salary.

Looking at the graph and bars, out of the 4 choices, Surveyor has the LEAST SALARY, so SURVEYOR would require LEAST EDUCATION. Answer choice D is right.

The career with the least education and having positive correlation between salary and education is [tex]\boxed{{\text{Surveyor}}}.[/tex] Option (d) is correct.

Further Explanation:

Given:

The options are as follows,

(a). Accountant

(b). Architect

(c). Pharmacist

(d). Surveyor

Explanation:

Correlation is a relationship between the two events. The change in one will affect the in change of another one.

There are two type correlations.

A positive correlation mean that if one increases the second event will also increase and if one decreases the second event will also decreases.

A negative correlation mean that if one increases the second event will also decrease and if one decreases the second event will also increase.

There is a positive correlation between salary and education.

The least salary in the given option is of surveyor and has least education.

The career with the least education and having positive correlation between salary and education is [tex]\boxed{{\text{Surveyor}}}[/tex]. Option (d) is correct.

Learn more:

Learn more about normal distribution https://brainly.com/question/12698949 Learn more about standard normal distribution https://brainly.com/question/13006989 Learn more about confidence interval of meanhttps://brainly.com/question/12986589

Answer details:

Grade: High School

Subject: Statistics

Chapter: Correlation

Keywords: correlation, salary, education, positive correlation, based, careers, least education, accountant, architect, pharmacist, surveyor, negative correlation, average salaries, personal trainer,  

mai is saving money to buy a game so far she has saved 20$ which is four fifths of the total cost of the game how much does the game cost

Answers

Four fifths of 25 is twenty so the total cost would be 25$

What does the equal sign with an arrow mean?

Answers

The ⇒ sign means that if the function on the left hand side of the notation is true, then so is the function on the right hand side of the notation.

What is the range of the function on the graph

Answers

Harizontile and diagniol because the line is going both ways

Answer:

all real numbers less than or equal to 3

Step-by-step explanation:

The range of the function is set of all y value for which the function is defined

To find out the range we look at the maximum or minimum point on the graph

Maximum point on the graph that is vertex is (-1,3)

x=-1 and y=3

The graph of y is below 3 (vertex)

So the range of the function is set of all real numbers less than or equal to 3

At a local University 54.3% of incoming first-year students have computers. If 3 students are selected at random, find the following probability. A) At least one has a computer
B) None have computers

Answers

 A is .9046
B is .457^3

Solve the equation sin theta = 0.3 to the nearest tenth. Use the restrictions 90degrees < theta < 180degrees.

A)
θ=107.5


B)
θ=162.5


C)
θ=197.5


D)
θ=17.5

Answers

We first do:
∅ = sin⁻¹(0.3)
∅ = 17.5°

To go into the second quadrant, we add 90°.
∅ = 17.5 + 90
= 107.5°
The answer is A.

if f(2)=3 and f'(2)=5 find the equation of the tangent line and the normal line to the graph of y=f(x)

Answers

1) tangent line: slope = f '(2) = 5, point (2,3)

y - 3 = 5(x-2)
y = 5x - 10 + 3
y = 5x - 7

2) normal line: slope = - 1/ f '(2) = - 1/5, point (2,3)

y - 3 = [-1/5](x - 2)

y = - x/5 + 2/5 + 3

y = - x/5 + 17/5

The equations of the tangent and normal to f(x) at x = 2 are -

Tangent → y = 5x - 7

Normal → y = -1/2 x + 3.4

What is tangent and normal to a curve?

A tangent is a line touching the curve at one distinct point, and this distinct point is called the point of contact.

The normal line to a curve at a particular point is the line through that point and perpendicular to the tangent.

Given is a function f(x) and f(2) = 3 and f'(2) = 5.

We can find the tangent to the curve at x = 2 by finding the value of the derivative of f(x) at x = 2. The slope of the tangent at x = 2 is -

m[T] = (dy/dx) [at x = 2] = f'(2) = 5

Now. the equation of tangent can be written as -

(y - y₁) = m [T] (x - x₁)

and

f(2) = 3

At x = 2, y =3 →

y - 3 = 5 (x - 2)

y - 3 = 5x - 10

y = 5x - 10 + 3

y = 5x - 7

This is the equation of the tangent.

In order to find the slope of Normal at x = 2, use the following formula -

m [T] x m [N] = -1

m [T] = 5

Then -

m [N] = - 1/5

The equation of the normal is given by -

(y -  y₁) = m [N] (x - x₁)

(y - 3) = -1/5 (x - 2)

y - 3 = -x/2 + 2/5

y = -x/2 + 2/5 + 3

y = -1/2 x + 3.4

This is the equation of Normal.

Therefore, the equations of the tangent and normal to f(x) at x = 2 are -

Tangent → y = 5x - 7

Normal → y = -1/2 x + 3.4

To solve more questions on Tangents and Normal, visit the link below-

https://brainly.com/question/4463819

#SPJ2

The length of a rectangle is 4/5 feet. The width is 5/8 feet. How much greater is the length of the rectangle than the width?

A.)7/40 feet
B.)1/5 feet
C.)3/20 feet
D.)1/3 feet

Answers

A.) 7/40 because 4/5=32/40 and 5/8=25/40 and 32/40-25/40 is 7/40. 

Question 8
 8  pts + 4 pts for the best answer Thanks!
Question is attached.

Answers

The answer will be -3
-3 is the answer just make sure u get it right

The lines p and q intersect at point O. What is the value of x?
X =

Answers

Answer:

The value of x is 16 .

Step-by-step explanation:

Definition of vertically opposite angles

Two lines crosses angles opposite to each other are called vertically opposite angle .

Thus

(2x + 13)° = (3x-3)°

(Vertically opposite angles )

2x + 13 = 3x-3

2x - 3x = -3-13

-x = -16

x = 16

Therefore the value of x is 16 .

What is the difference between 7 and -8?

Answers

7 - (-8) = 15
Hope this helps. :)


The answer would be 15.

7 + 8 (simplify brackets by switching it from subtraction to addition.)

15 (simplify)

What is the end of the CD account time when the money can be withdrawn?

Maturity date

End date

Completion date

Withdrawal date

Answers

The correct answer for this question would be the first option. It is the MATURITY DATE that is seen in the end of the CD (Certificate of Deposit) account time when the money can be withdrawn. Hope this is the answer that you are looking for. 

Correct Answer: maturity date

denise bought 5.2 pounds of rice for $5.29. using the unit rate, how much would 2 pounds of rice cost?

Answers

5.29/5.2=x/2
times both sides by (5.2)(2)
(2)(5.29)=5.2x
10.58=5.2x
divide both sides by 5.2
2.034=x
answer is $2.03 for 2lb rice
i think it will be $1.966 or about $2 if you rounded it up

In a triangle, the second angle is twice the measure of the first, and the third angle is three times the measure of the second. Find the measure of the third angle.

A. 20 degrees

B. 30 degrees

C. 120 degrees

D. 180 degrees

Answers

its b if 3 times its c

Select all ratios equivalent to 5:15.
2:60, 20:9, 7:21, 1:3

Answers

20:9 and 1:3, it says my character count is too short so I'm writing this LOL

what is 475.53 minus 67.37

Answers

It is 408.16. because that is what you get when you subtract them.
hello, it should be 408.16 

7 × 30 = 7 × ___ tens

Answers

30 tens so that it can still= 210 tens.

7 × 30 = 7 × 3 tens.

To solve 7 × 30 in terms of tens, we first observe that 30 can be written as 3 tens since 30 equals 3 × 10.
Therefore:

7 × 30 can be rewritten as 7 × (3 × 10), which simplifies to 7 × 3 tens.

So, 7 × 30 = 7 × 3 tens.

Joe paid $14.00 for a board game this is 70% of the original price what was the original price

Answers

start off by finding 10% of $14. in order to find 10%, divide it by 70 which gives 2. you now need to make the 30% to add to the 70%, by timesing the 2 by 3to give 6. now all you need to do it add the 6 to 14 to make 20!

so your answer is $20

Answer:

The original price was $20.00

Step-by-step explanation:

Joe paid $14.00 for a board game.

This is the 70% of the original price.

Let the original price of a board game be x

70% of x = $14.00

0.70x = 14.00

x = [tex]\frac{14}{0.7}[/tex] = $20.00

The original price was $20.00

1. Solve for Y 1/2y+4x=z

Answers

I hope this helps you

Wxyz is a parallelogram. name an angle congruent to xyz

Answers

Answer: The answer is ∠XWZ.

Step-by-step explanation:  Given that WXYZ is a parallelogram. We are to name an angle that is congruent to ∠XYZ.

Attached herewith, an image of parallelogram WXYZ.

We know that the opposite angles in a parallelogram are congruent to each other. So, in the parallelogram WXYZ, we must have

∠WXY ≅ ∠WZY and ∠XYZ ≅ ∠XWZ.

Therefore, angle congruent to ∠XYZ is ∠XWZ.

Thus, the answer is ∠XWZ.

Final answer:

Angle congruent to angle XYZ in parallelogram WXYZ would be angle W since opposite angles in a parallelogram are congruent.

Explanation:

If WXYZ is a parallelogram and you are asked to name an angle congruent to angle XYZ, you should look at the properties of a parallelogram. One key property is that opposite angles are congruent. Therefore, the angle congruent to angle XYZ would be angle W. If we consider the vertices in order around the parallelogram W, X, Y, Z, angle XYZ corresponds to angle WZY, so its opposite angle is angle WXZ (or simply angle W).

It's important to remember that in a parallelogram, consecutive angles are supplementary (their sum is 180 degrees). This supplementary property could help you in other problems related to angles in a parallelogram, but for this particular case—identifying a congruent angle—the opposite angles property directly gives us the answer.

GRAPHING EXPONENTIAL FUNCTIONS
1. If (-1, y) lies on the graph of y = 3^x+1, then y =
a) 0
b) 1/3
c) 1

2. If (x, 1/100) lies on the graph of y = 10^x, then x =
a) 2
b) -1/2
c) -2

3. If (-1, y) lies on the graph of y = 2^2x, then y =
a) -4
b) 1/4
c) 1

4. What is the relationship between the graphs of y = 2^x and y = 2^-x?
a) reflections over the x-axis
b) reflections over the y-axis
c) reflections over y = x

5. If (3, y) lies on the graph of y = -(2x), then y =
a) 1/8
b) -6
c) -8

6. Which of the following equations is not exponential?
a) y = 1x
b) y = (1/2)x
c) y = -2x

7. If (-2, y) lies on the graph of y = 4^x, then y =
a) -16
b) 1/16
c) 16

8. If (-3, y) lies on the graph of y = 3^-x, then y =
a) -27
b) 1/27
c) 27

9. If (-3, y) lies on the graph of y = 3^x, then y =
a) 1/27
b) -1
c) -27

10. If (-3, y) lies on the graph of y = (1/2)^x, then y =
a) 8
b) 1/8
c) -8

Answers

1. If (-1, y) lies on the graph of y = 3^(x+1), then y = 3^(-1 + 1) = 3^0 = 1

2. If (x, 1/100) lies on the graph of y = 10^x, then 1/100 = 10^x
10^-2 = 10^x
x = -2

3. If (-1, y) lies on the graph of y = 2^2x, then y = 2^2(-1) = 2^(-2) = 1/4

4. The relationship between the graphs of y = 2^x and y = 2^-x is reflections over the y-axis.

5. If (3, y) lies on the graph of y = -(2x), then y = -2(3) = -6

6. All are not exponential

7. If (-2, y) lies on the graph of y = 4^x, then y = 4^(-2) = 1/4^2 = 1/16

8. If (-3, y) lies on the graph of y = 3^-x, then y = 3^-(-3) = 3^3 = 27

9. If (-3, y) lies on the graph of y = 3^x, then y = 3^(-3) = 1/3^3 = 1/27

10. If (-3, y) lies on the graph of y = (1/2)^x, then y = (1/2)^(-3) = 2^3 = 8

The detailed answer provides the solutions to a series of questions involving finding specific values for y given x in various exponential equations, as well as recognizing the relationship between graphs of exponential functions and identifying which equations are not exponential.

1. If (-1, y) lies on the graph of y = 3ˣ+1, then y equals the value of the function when x is -1. Therefore, y = 3⁻¹ + 1 which simplifies to y = 1/3 + 1 = 4/3, which is not one of the provided options.

2. If (x, 1/100) lies on the graph of y = 10ˣ, then we need to find the value of x such that 10ˣ equals 1/100. 10ˣ = 1/100 is equivalent to 10ˣ = 10⁻², so x = -2.

3. If (-1, y) lies on the graph of y = 2²ˣ, we substitute x with -1. Then y = 2²*⁻¹ = 2⁻² = 1/4.

4. The relationship between the graphs of y = 2ˣ and y = 2⁻ˣ is that they are reflections over the y-axis. When x is replaced by -x in the function, the resulting graph is a reflection over the y-axis.

5. If (3, y) lies on the graph of y = -(2ˣ), then y is the negative value of 2 raised to the power of 3, which is -8. So, y = -8.

6. Among the given equations, y = -2ˣ is not exponential because it lacks the variable as an exponent. So, y = -2ˣ is not exponential.

7. If (-2, y) lies on the graph of y = 4ˣ, then y = 4⁻² = 1/16.

8. If (-3, y) lies on the graph of y = 3⁻ˣ, then y = 3⁻⁽⁻³⁾ = 3³ = 27.

9. If (-3, y) lies on the graph of y = 3ˣ, then y = 3⁻³ = 1/27.

10. If (-3, y) lies on the graph of y = (1/2)ˣ, then y = (1/2)⁻³ = 2³ = 8.

If AB is parallel to CD and the slope of CD is -8, what is the slope of AB ?

Answers

Parallel Lines Theorem Two coplanar nonvertical lines are parallel if and only if they have the same slope. Any two vertical lines are parallel. Therefore, the slope of AB is -8 if AB is parallel to CD.

Answer:

and only if they have the same slope. Any two vertical lines are parallel. Therefore, the slope of AB is -8 if AB is parallel to CD.

Step-by-step explanation:

How many points are shared by concentric circles?

a. 0
b. 1
c. 2
d. infinite points

Answers

Zero! Concentric circles all share the same center or middle point. This means there is one outer circle and infinite circles inside of it but they never touch one another.

Answer:

Option a. 0

Step-by-step explanation:

As we know if we draw two circles with same center but with the different radii, they neither touch each other nor intersect. This is true not only for two circles but for infinite number of the circles having the same center. They never have the common points to share. Set of points lying on each concentric circles are different.

Therefore Option a. 0 points is the correct answer.

Which relationship between x and y in the equation shows a proportional relationship?

y=3x
y=5(x+3)
y+5=x+3 
y=5x+3

Answers

y=3x
they are in proportion of 1 to 3

solve: log 3=.5, then log 1/9=?

Answers

If we know that log 3 = .5, we have to solve:
log 1/9 = ?
log 1/9 = log 3^(-2) = -2 * log 3=                ( because: log x^n = n log x )
- 2 * .5 = - 1
Answer: log 1/9 = - 1 

18 is 240% of what? basic percent equation ...?

Answers

18 = (240/100) x what;
what = 18 x (100/240);
what = 1800/240;
what = 7.5;
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