3 years ago

PLEASE HELP!!! Be as specific as possible!!!

Mathematics

1 answer:

Shalnov [3]3 years ago

6 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

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I'd like 75% of my order 6 feisty's cupcakes, and the rest frosty's. how many frosty's do I get?

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3 years ago

A fence is to be built to enclose a rectangular area of 800 square feet. The fence along three sides is to be made of material t

myrzilka [38]

Answer:

dc/dx = 0 when x = 20. hence fence is 20×40

Step-by-step explanation:

Given data:

Rectangular Area = 800 ft^2

three side material cost = $5 per ft

fourth side material cost is $15 per ft

let expensive side is x and other dimension assume to be y

Then cost is c

c = 5(x+ 2y) + 15 x

xy = 800, so y = 800/x

c =5(x+ 1600/x^2) + 15x

for minimum when dc/dx = 0

$\frac{dc}{dx} = 5(1-\frac{1600}{x^2}) + 15 = 0$

$5(1-\frac{1600}{x^2}) + 15 = 0$

$(1-\frac{1600}{x^2}) + 3 = 0$

$(1-\frac{1600}{x^2}) = - 3$

$x^2 - 1600 = -3x^2$

$4x^2 - 1600 = 0$

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x = 20

dc/dx = 0 when x = 20. hence fence is 20×40

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4 years ago

Which set of side lengths forms a right triangle? A) 5 cm, 6 cm,7 cm B) 2 cm, 4 cm, 6 cm C) 8 cm, 9 cm, 11 cm D) 8 cm, 15 cm, 17

Tamiku [17]

A) 5cm,6cm,7cm
you’re welcome

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3 years ago