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myrzilka [38]
3 years ago
7

Plz help no guessing

Mathematics
2 answers:
katrin2010 [14]3 years ago
8 0
Answer to this question is negative 3
Gemiola [76]3 years ago
7 0

The answer is B. -3

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You spend $77 shopping. You buy some shirts at $12 each, and spend $5 on food. How many shirts did you buy?
galina1969 [7]
You buy 6 shirts. So $77 minus $5=$72
Then you divide $72 by $12 and you get 6 shirts
5 0
3 years ago
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Answerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
Ulleksa [173]

Answer:

  • 5x²-2x+7+2x²+6x-9
  • 5x²+2x²-2x+6x+7-9
  • 7x²+4x-2

so, 7x²+4x-2 is yr answer.

hope it helps.

<h3>stay safe healthy and happy.</h3>
8 0
2 years ago
3 1/8t=2 1/2 what is t?​
navik [9.2K]

Answer:

T=4

Step-by-step explanation:

it is just half of what the other side is if one side is like 1 1/2 then you just break the other side in half and that will give you T.

5 0
3 years ago
(4 times 2 to the third power) - (64 divided by 8)
Irina-Kira [14]

Answer:

24

Step-by-step explanation:

(4 times 2 to the third power) - (64 divided by 8) = 4*(2^3) - 64/8

= 4*8 - 8 = 32 - 8 = 24

The answer is 24

Hope this helps :)

Have a great day!

7 0
2 years ago
A cylinder shaped can needs to be constructed to hold 600 cubic centimeters of soup. The material for the sides of the can costs
PSYCHO15rus [73]

Answer:

the dimensions that minimize the cost of the cylinder are R= 3.85 cm and L=12.88 cm

Step-by-step explanation:

since the volume of a cylinder is

V= π*R²*L → L =V/ (π*R²)

the cost function is

Cost = cost of side material * side area  + cost of top and bottom material * top and bottom area

C = a* 2*π*R*L + b* 2*π*R²

replacing the value of L

C = a* 2*π*R* V/ (π*R²) + b* 2*π*R²  = a* 2*V/R + b* 2*π*R²

then the optimal radius for minimum cost can be found when the derivative of the cost with respect to the radius equals 0 , then

dC/dR = -2*a*V/R² + 4*π*b*R = 0

4*π*b*R = 2*a*V/R²

R³ = a*V/(2*π*b)

R=  ∛( a*V/(2*π*b))

replacing values

R=  ∛( a*V/(2*π*b)) = ∛(0.03$/cm² * 600 cm³ /(2*π* 0.05$/cm²) )= 3.85 cm

then

L =V/ (π*R²) = 600 cm³/(π*(3.85 cm)²) = 12.88 cm

therefore the dimensions that minimize the cost of the cylinder are R= 3.85 cm and L=12.88 cm

5 0
3 years ago
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