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2 years ago

8

You have 68 feet of fencing to enclose a rectangular plot that borders on a river. If you DO NOT fence the side

1 answer:

Vladimir79 [104]2 years ago

3 0

Answer:

168 = L + 2W

And you want to maximize LW.

Which means you want to maximize W (168 - 2W), or 168W - 2W^2.

To maximize that, the derivative must go to zero.

0 = 168 - 4W, or W = 42. And L = 84. Done. :-)

Step-by-step explanation:

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The depth of the Challenge Deep is 36,198 feet. How deep is it in fathoms and leagues (marines) (Round to the nearest hundredth.

lbvjy [14]

6 feet = 1 fathom, so 36,198 ft = 6,033 fathoms

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3 years ago

What is the actual distance from the library to the grocery store?

gtnhenbr [62]

Answer:

3

Step-by-step explanation:

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3 years ago

I have two coins totaling 15 cents. One of them is it a nickel. What are they?

Aloiza [94]

One is a nickel and the other is a dime

5 0

3 years ago

katovenus [111]

Answer:

x = $\frac{7+\sqrt{47}\times i }{4}$

Step-by-step explanation:

<u>To solve quadratic systems,we always substitute one variable in terms if the other and then solve the equation.</u>

x + 2y = 6 ---------------(1)

y - 5 = $(x-2)^{2}$ ---------------(2)

y = $(x-2)^{2}$ + 5 ---------------(3)

Substitute (3) in (1) ,

x + 2( $(x-2)^{2}$ + 5 ) = 6

$(a + b)^{2}$ = $a^{2} + 2ab + b^{2}$

x + 2( $x^{2} - 4x + 4$ + 5 ) = 6

$2x^{2} - 7x + 12=0$ --------------(4)

The roots of the quadratic equation $ax^{2} +bx+c$ is

x = $\frac{(-b) + \sqrt{(-b)^{2}-4 \times ac } }{2 \times a}$ -----------(5)

According to equation (5),solution of (4) is

x = $\frac{7 + \sqrt{(-7)^{2}-4 \times 24 } }{2 \times 2}$

x = $\frac{7+\sqrt{49-96}}{4}$

x = $\frac{7+\sqrt{47}\times i }{4}$

4 0

3 years ago

She has one orange pick for every two green picks how many green picks does she have if she has 12 total picks

Lelechka [254]

She has 6 green picks, because 2*6=12.

5 0

3 years ago