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shutvik [7]
3 years ago
6

Ray has saved $576 to purchase a lap top computer. This amount is ¾ of the total price of the computer. What is the price of the

computer without sales tax? If he has to pay a sales tax of 6%, what is the total cost of the computer? Show and Explain your work.
Mathematics
2 answers:
qaws [65]3 years ago
8 0
3/4 x=576
x=576 x 4/3=2304/3=$768 price of laptop. $768 x .06 tax=46.08 add to 768=$814.08 for the total cost of the laptop
Ronch [10]3 years ago
7 0
576=.75x  ($576 is 75% of what?)
Divide both sides by .75 to isolate x cancels out the .75 on the side with the x
x=576/.75=768 cost of the computer without sales tax
To find it with sales tax:
First you multiply the cost by the tax rate to get the tax
768*.06=46.08 is the sales tax
Then you add the tax to the cost to get the total cost
768+46.08=814.08 is the price of the computer with sales tax

So your two answers are $768 without tax and $814.08 with tax.

Feel free to ask me any questions.
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Write the slope-intercept form of the equation of the line described. 8.) through: ( -4 , 5 ) , perpendicular to Y= 3/2x - 2
kozerog [31]

Answer

The equation of the required line in slope-intercept form is

y = (-2x/3) + (7/3)

Comparing this with y = mx + c,

Slope = m = (-2/3)

Intercept = c = (7/3)

Explanation

The slope and y-intercept form of the equation of a straight line is given as

y = mx + c

where

y = y-coordinate of a point on the line.

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

c = y-intercept of the line.

So, to solve this, we have to solve for the slope and then write the eqution in the slope-point form which we can then simplify to the slope-intercept form

The general form of the equation in point-slope form is

y - y₁ = m (x - x₁)

where

y = y-coordinate of a point on the line.

y₁ = This refers to the y-coordinate of a given point on the line

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

x₁ = x-coordinate of the given point on the line

The point is given as (x₁, y₁) = (-4, 5)

Then, we can calculate the slope from the information given

Two lines with slopes (m₁ and m₂) that are perpendicular to each other are related through

m₁ × m₂ = -1

From the line given,

y = (3/2)x - 2

We can tell that m₁ = (3/2), so, we can solve for m₂

(3/2) (m₂) = -1

m₂ = (2/3) (-1) = (-2/3)

We can then write the equation of the given line in slope-intercept form

y - y₁ = m (x - x₁)

y - 5 = (-2/3) (x - (-4))

y - 5 = (-2/3) (x + 4)

y - 5 = (-2x/3) - (8/3)

y = (-2x/3) - (8/3) + 5

y = (-2x/3) + (7/3)

Hope this Helps!!!

4 0
1 year ago
How to solve this proof
pishuonlain [190]

sorry do not know the answer'


5 0
2 years ago
Sommer wants to buy a new car. She currently drives a car that gets 24 miles per gallon. She is contemplating buying a car that
frozen [14]

answer

$962.50

set up equation

first, we want to find out how many gallons of gas she'll save a year

x1 = gallons for old car

x2 = gallons for new car

gallons saved = x1 - x2 since she uses more gallons with the old car with a lower miles per gallon

then, find how much she saves on gas by multiply the price per gallon (3.85) by gallons saved

price saved = gallons saved * price

price saved = (x1 - x2) * 3.85

gallons with old car

to find the number of gallons, we divide the number of miles (15000) by miles per gallon (24 for the old car)

x1 = 15000 / 24

x1 = 625

gallons with new car

use the same process as with the old car, but with 40 miles per gallon instead

x2 = 15000 / 40

x2 = 375

plug in values

price saved = (x1 - x2) * 3.85

price saved = (625 - 375) * 3.85

price saved = 250 * 3.85

price saved = $962.50

3 0
3 years ago
Find the exact value of : cos(2 arctan(4/3))
QveST [7]
Cos(2 arctan(4/3)) = cos(2 arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arcsin(4/5)) = (3/5)^2 - (4/5)^2 = 9/25 - 16/25 = -7/25.
7 0
2 years ago
The ratio of Warrior fans to Laker fans at a basketball game was 5 to 3. If
djyliett [7]

Answer:

35

Step-by-step explanation:

Create a proportion where x is the number of Warrior fans

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Cross multiply and solve for x

105 = 3x

35 = x

So, there were 35 Warrior fans

7 0
2 years ago
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