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ipn [44]
3 years ago
9

I don't understand this.

Mathematics
1 answer:
Dimas [21]3 years ago
5 0
3x + y = 6.  You're free to choose any x values you wish (at least, for this linear function).  So, if you chose x = 0, y would be 6, and you'd enter    0      6    in the first row of the given table.

If you chose x = -2, then -6 + y = 6 and y would be 12.  Enter        -2     12  in the second row of the table.

You could also choose y values and calculate the related x-values.
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photoshop1234 [79]
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2 years ago
Im so confused please help with 5 and 6
Drupady [299]

Answer:

5)102,78

6)56,56

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8 0
3 years ago
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A box with a square base and open top must have a volume of 32,000 cm3. find the dimensions of the box that mini- mize the amoun
zmey [24]
Alrighty


squaer base so length=width, nice


v=lwh
but in this case, l=w, so replace l with w
V=w²h

and volume is 32000
32000=w²h


the amount of materials is the surface area
note that there is no top
so
SA=LW+2H(L+W)
L=W so
SA=W²+2H(2W)
SA=W²+4HW

alrighty

we gots
SA=W²+4HW and
32000=W²H

we want to minimize the square foottage
get rid of one of the variables
32000=W²H
solve for H
32000/W²=H
subsitute

SA=W²+4WH
SA=W²+4W(32000/W²)
SA=W²+128000/W

take derivitive to find the minimum
dSA/dW=2W-128000/W²
where does it equal 0?

0=2W-1280000/W²
128000/W²=2W
128000=2W³
64000=W³
40=W

so sub back
32000/W²=H
32000/(40)²=H
32000/(1600)=H
20=H

the box is 20cm height and the width and length are 40cm
7 0
3 years ago
Keenan set his watch 3 seconds behind, and it falls behind another
disa [49]

Answer:

in *42* days it will be 45 seconds behind

Step-by-step explanation:

it is already 3 behind and if its only 1 second everyday then you add 1 day until you get to 45 which 42+3 is 45 so the correct answer is 42 days.

6 0
3 years ago
The Moores paid $6 more for skate rentals than the cotters did. Together the Two families paid $30 for skate rentals. How many p
lesya [120]

the moores paid $18, hope this helps

8 0
3 years ago
Read 2 more answers
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