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abruzzese [7]
3 years ago
12

And an electronics warehouse ships TVs and DVD players to retailers all throughout the United States. The weight of three televi

sions and five DVD players is 62.5 pounds. The weight of three televisions and two DVD players is 52 pounds. How much does one DVD player and one TV weight.
Define your variables
Write your two equations
Solve
Mathematics
1 answer:
vodomira [7]3 years ago
4 0
X= weight of TV
y= weight of CD

3x+5y= 62.5
3x+ 2y= 52
You can either solve for a variable, or eliminate a variable by subtracting the second equation from the first:

3x + 5y = 62.5
-(3x+2y = 52)
0 + 3y = 10.5, so y = 10.5/3 or 3.5.

Now plug y= 3.5 back into any equation to get x:

3x + 5(3.5) = 62.5
3x + 17.5 = 62.5
3x = 45
x = 15
Always check work. Both equations should be true for x=15, y= 3.5
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The volume of a box(V) varies directly with its length(l). Using k for the constant of proportionality, express the relationship
pochemuha

Answer: V = L (k)

Step-by-step explanation:

Hi, to answer this question we have to write an equation with the information given:

  • <em>Volume of a box = V </em>
  • <em>Length = l </em>
  • <em>Constant of proportionality = k</em>

We know that the volume of the box (V) varies directly with its length (l).

So, the expression for the volume is:

V = L (k)

Feel free to ask for more if needed or if you did not understand something

8 0
3 years ago
9. How many gallons of paint will you need to buy if you are painting a room that is 30 ft by
pentagon [3]

Answer:

To paint the room with dimension 30 ft by 50 ft by 50 ft is 26.67 gallon    

Step-by-step explanation:

Given as :

The Length of wall = L = 50 ft

The width of wall   = W = 30 ft

The height of wall  = H = 50 ft

Each gallon of paints should cover 300 sq feet

Let the amount o gallon required to paint the room = x

SO, Area of four wall = 2 × ( L + W ) × H

Or, Area of four wall = 2 × ( 50 + 30 ) × 50

Or, Area of four wall = 2 × ( 80 ) × 50

SO, Area of four wall = 8000  ft²

∵ To paint 300 sq ft the amount of paint required = 1 gallon

∴ To paint 8000 sq ft the amount of paint required = 26.67 gallon

Hence ,to paint the room with dimension 30 ft by 50 ft by 50 ft is 26.67 gallon      answer  

6 0
3 years ago
Use the diagram below to answer the question.Identify a segment parallel to HG.
svetlana [45]
Its a hexagon i thnk
3 0
4 years ago
Read 2 more answers
Twice a number plus 6 times the number is -72.
katen-ka-za [31]

Answer:

The number is -9

Look at the attachment

7 0
3 years ago
Jackson received a paycheck with a salary of $4,200. The check included a deduction of $725 for taxes, $215 in benefits paid by
Artemon [7]

Answer:

C

Step-by-step explanation:

(4,200 - 725) + 215 + 375 = 4065

I WAS THE FIRST TO PUT THIS, so if someone says the same, they copied me

7 0
3 years ago
Read 2 more answers
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