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Effectus [21]
4 years ago
15

HELP NEEDED : Solve this using ELIMINATION: 8x + 8y = 240 4x + y = 54 Please!!!!

Mathematics
1 answer:
Licemer1 [7]4 years ago
4 0

4x + y = 54

8x + 2y = 104

8x + 8y - (8x + 2y) = 240 - 104

6y = 136

y=22 2/3

4x+ 22 2/3 = 54

4x= 31 1/3

x= 7 5/6

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OLEGan [10]

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3 years ago
Three workers can load a truck in 8 minutes. How many workers need to join this team so that they can load that truck in 6 minut
slamgirl [31]

Answer:

1 extra worker

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If three workers load the truck in 8 minutes we have that:

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We know that if we wanted to reduce the time at, for example, half, we would need to increase the workers in a half. More generally, if we want to reduce the time in 1/X me need to multiply the workers by X.

Here me need to reduce the time in 6/8 as 8*6/8 = 6. So, we will need:

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6 0
4 years ago
Hey school system is reducing the amount of dumpster loads of trash removed each week in week five there are 45 dumpster load th
natta225 [31]

Answer:

 y = -3x + 60

Step-by-step explanation:

For the answer to the question above,

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The linear equation may be expressed as,y = mx + b

 m and b are the slope and y - intercept, respectively. Substituting the corresponding values,

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Solving for m and b gives the values as m = -3 and b = 60. Thus, the equation is 

 y = -3x + 60

4 0
3 years ago
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