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anastassius [24]
3 years ago
13

Applications for Systems of Equations

Mathematics
1 answer:
Luda [366]3 years ago
4 0
For a single CD: $42.475 around $42.50
For a single DVD: $27.485 around $27.50
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Examine the diagram and information to answer the question. Rectangle EFGH has vertices at E(7,7), F(1,5), G(2,2), and H(8,4). H
schepotkina [342]

Answer:

Perimeter of rectangle = 6√10 units (the attachment isnt clear. It seems the answer is in option B)

Step-by-step explanation:

First we find the distance of the length and width of the rectangle.

Distance between E and F = Distance EF

Distance EF = √(∆y²-∆x²)

= √[(5-7)² + (1-7)²] = √[(-2)² + (-6)²]

= √(4+36) = √40

Distance EF = 2√10

Distance between F and G = Distance FG

Distance FG = √(∆y²-∆x²)

= √[(2-5)² + (2-1)²] = √[(-3)² + (1)²]

= √(9+1) = √10

Distance FG = √10

Length= distance EF = distance HG

And width = distance FG = distance EH

Perimeter of rectangle = 2(length + width)

Perimeter of rectangle = 2(2√10 + √10)

= 2(3√10)

Perimeter of rectangle = 6√10 units (the attachment isnt clear. It seems the answer is in option B)

7 0
4 years ago
I NEED HELP WITH THIS PLZZ HELP ME!
Inessa05 [86]

B. 130+70+(-61)

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3 0
3 years ago
Read 2 more answers
It costs $6.45 to buy 5 songs on I-tunes. How much does it cost to buy 20 songs?
babunello [35]

Answer:$25.80

Step-by-step explanation:

6.45/5 = 1.29

1.29 x 20 =25.80

5 0
2 years ago
Anybody knows how to do this ?????
Afina-wow [57]

Answer:

the quickest way would be to "complete the square"

on x^2 + 5x - 7

you will end up with  (x+2.5)² = 13.25

or

 y =  (x+2.5)²-13.25    

the vertex

VERTEX: (-2.5,-13.25)    

Solution/X-Intercepts: -6.14 AND 1.14  

Step-by-step explanation:

 

3 0
3 years ago
This as a decimal 6th​
makkiz [27]

Answer:

the answer to the question is 3.2

8 0
3 years ago
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