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Lelu [443]
3 years ago
5

Jason has a coupon for $2.50 off any electronic book for an online book store. If the original price, in dollars, of an electron

ic book is p and the discounted price, in dollars, is d, which table shows the relationship between p and d?
Mathematics
1 answer:
lorasvet [3.4K]3 years ago
5 0
Given:

$2.50 off any electronic book for an online bookstore.

let p = original price in dollars
     d = discounted price in dollars

p = d + $2.50 

The equation above is the working equation to determine the original and discounted price of any ebook purchased by Jason. <span />
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How do you find the area of a polygon in a coordinate plane
inna [77]

Step-by-step explanation:

The way that I would do it, would be to use the point distance formula to find the length of each side.

Distance formula: \sqrt{(x2-x1)^{2} (y2-y1) ^{2} }

After you use this formula to find the length of all sides of the polygon, you would need to use the appropriate area formula to find the area of the polygon.

Area of Triangle: A= 1/2 base times height

Area of Rectangle: A= length times width

Area of Square: A= s^2 where s is the length of the side

Area of Parallelogram: A= base times height

Area of Trapezoid: A= 1/2 times height (base 1 + base 2) where base 1 and base 2 are the parallel sides

Area of Kite or Rhombus: A= 1/2 (diagonal 1 times diagonal 2)

Area of Regular Polygons: A= 1/2 (apothem times perimeter)

6 0
2 years ago
What is the least common multiple (LCM) of 15 and 45? A. 15 B. 675 C. 45 D. 90
harkovskaia [24]

Answer:

C - 45 is the LCM of 15 & 45

Step-by-step explanation:

Find the multiples:

15, 30, 45, 60

45, 90

They both have 45 in common

3 0
3 years ago
What is the equation when y=5x+4 is reflected over the x-axis, y-axis &amp; y=x?
tigry1 [53]

Answer:

A) y=-5x-4

B) y=-5x+4

C) y=\frac{x-4}{5}

Step-by-step explanation:

So we have the equation:

y=5x+4

Let's write this in function notation. Thus:

y=f(x)=5x+4

A)

To flip a function over the x-axis, multiply the function by -1. Thus:

f(x)=5x+4\\-(f(x))=-(5x+4)

Simplify:

-f(x)=-5x-4

B) To flip a function over the y-axis, change the variable x to -x. Thus:

f(x)=5x+4\\f(-x)=5(-x)+4

Simplify:

f(-x)=-5x+4

C) A reflection over the line y=x is synonymous with finding the inverse of the function.

To find the inverse, switch x and f(x) and solve for f(x):

f(x)=5x+4

Switch:

x=5f^{-1}(x)+4

Subtract 4 from both sides:

x-4=5f^{-1}(x)

Divide both sides by 5:

f^{-1}(x)=\frac{x-4}{5}

And we're done :)

7 0
3 years ago
Nina works at an hourly rate of $12.25 per hour and worked 46 hours last week. She earns overtime for hours exceeding 40 hours.
Alenkinab [10]

Answer:

$600.25

Step-by-step explanation:

12.25 per week

46hrs last week

40+ = overtime

Overtime = t*1.5

------------------------------

46-40= 6hrs of overtime

40*12.25= 490 - this is her money for working 40hrs.

To figure out the money amount of overtime pay--- 12.25*1.5= 18.375 (18.38)

<em>18.38*6= 110.25</em>

add now

<em>110.25+490= $600.25</em>


=) ~i hope i helped~ =)

6 0
3 years ago
What are the lengths of the legs of triangle ABC?
lys-0071 [83]

Answer:

B)6v3; 12

The answer to the question is b.

7 0
3 years ago
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