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3 years ago

Please help me on this and I will give you BRIANLEIST Thank You ^ ^

Mathematics

2 answers:

madreJ [45]3 years ago

6 0

Answer:

C: 5

Step-by-step explanation:

A reciprocal means flipping the fraction over.

In this case, 1/5 — 5/1 or just 5.

Hope this helps! Have a great day!

dalvyx [7]3 years ago

5 0

Answer:

the answer is five

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in Eduardo’s collection, the number of butterflies is 12 more than twice the number of moths. If there are x moths, write an exp

34kurt

Answer:

An expression to represent the number of butterflies he has is y = 12 + 2x

Step-by-step explanation:

Let the number of butterflies in Eduardo’s collection be y

Then according to the question

The number of moths = x

The number of butterflies y = 12 + twice the number of moths---------(1)

Twice the number of moths = $2 \times \text{number of moths}$

Twice the number of moths = 2x -----------------------(2)

Substituting equation (2) in (1)

The number of butterflies y = 12 + 2x

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grandymaker [24]

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2 years ago

What is the length of the line segment with endpoints (11,−4) and (−12,−4) ?

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4 years ago

A farmer wants to build a rectangular pen and then divide it with two interior fences. The total area inside of the pen will be

irina [24]

Answer:

Dimensions of the pen:

x = 11 ft

y = 6 ft

Step-by-step explanation:

Let call "x" and "y" dimensions of the rectangular pen and x > y, so the interior fences will be equal to y.

The exterior length is 2*x + 2*y and its cost is (2*x + 2*y ) *20.40

The interior fences are 2*y and its cost is 2*y* 17

Total cost C = (2*x + 2*y ) *20.40 + 2*y* 17 (1)

Now area inside the pen is 66 ft² and it is equal to:

A = x*y ⇒ 66 = x*y ⇒ y = 66/x

Plugging that value in equation (1) will give C as a function of x

C(x) = [ 2*x + 2* (66/x) ]* 20.40 + 2* (66/x) * 17

C(x) = ( 2*x + 132/x ) 20.40 + 2244/x

C(x) = 40,80*x + 2692.8/x + 2244/x

C(x) = 40.80*x + 4936,8/x

Taking derivatives on both sides of the equation we get

C´(x) = 40.80 - 4936,8/x²

C´(x) = 0 ⇒ 40.80 - 4936,8/x² = 0 ⇒ 40.80 *x² = 4936,8

x² = 4936,8 / 40.80 ⇒ x² = 121 ⇒ x √121

x = 11 ft

And y = 66/x ⇒ y = 66/11 ⇒ y = 6 ft

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4 years ago