3 years ago

Si el peso de la figura es de 80 N cuales son las tensiones en las cuerdas a y b

Mathematics

1 answer:

Sauron [17]3 years ago

8 0

Answer: Can you translate for me? I don't know spanish.

Step-by-step explanation:

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Find the dimensions of the rectangle with area 256 square inches that has minimum perimeter, and then find the minimum perimeter

mezya [45]

Answer:

Dimensions: $A=a\cdot b=256$

Perimiter: $P=2a+2b$

Minimum perimeter: [16,16]

Step-by-step explanation:

This is a problem of optimization with constraints.

We can define the rectangle with two sides of size "a" and two sides of size "b".

The area of the rectangle can be defined then as:

$A=a\cdot b=256$

This is the constraint.

To simplify and as we have only one constraint and two variables, we can express a in function of b as:

$b=\frac{256}{a}$

The function we want to optimize is the diameter.

We can express the diameter as:

$P=2a+2b=2a+2*\frac{256}{a}$

To optimize we can derive the function and equal to zero.

$dP/da=2+2\cdot (-1)\cdot\frac{256}{a^2}=0\\\\\frac{512}{a^2}=2\\\\a=\sqrt{512/2}= \sqrt {256} =16\\\\b=256/a=256/16=16$

The minimum perimiter happens when both sides are of size 16 (a square).

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3 years ago

Which of the following is the inverse of F(x) if F(x) = 6x?

exis [7]

The best answer is d

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3 years ago

Sarah received a gift in a rectangular box with a volume of 240 in3. If the base of the box was 20 in2, how tall was the box?

Murrr4er [49]

V = l * w * h
240 = 20* h
divide both sides by 20
12 = h
height = 12 inches

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3 years ago

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Find the median. 2, 20, 19, 15, 11,9,7,1 OA. 10 OB. 10.5 c. 19 D. 20

pickupchik [31]

Answer:

A. 10

Step-by-step explanation:

First put the numbers in order from least to greatest then find the two numbers in the center of that since there is an even number of numbers there will be two the add and divide by two and you get 10.

1,2,7,9,11,15,19,20

9+11=20

20/2=10

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3 years ago

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We want to find the zeros of this polynomial: p(x)=(2x-1)(x+3)(x+1)(x-2) Plot all the zeros (xxx-intercepts) of the polynomial i

kicyunya [14]

Answer:

i don't understand the question

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3 years ago