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3 years ago

Given f(x) = 2*2+3 find f (-3)

Mathematics

1 answer:

san4es73 [151]3 years ago

4 0

Answer:

Being as their is no variable in your equation, the answer regardless of what we put in for the function is 7.

Step-by-step explanation:

f(x) = 2*2 + 3

f(x) = 4 + 3

f(x) = 7

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Serga [27]

Answer:

flip it around 9/13 reciprocal would be 13/9

8 0

2 years ago

A pigpen is to be enclosed using 640 m of fencing along three of its sides, the fourth side being a barn. Determine the dimensio

Basile [38]

Answer:

$W_{max}=480m\\ L_{max}=160m$

Step-by-step explanation:

Since we know we only have 640 feet of fence available, we know that L + W + L = 640, $\implies$ 2L + W = 640. This allows us to represent the width, W, in terms of L: W = 640 – 2L

Remember, the area of a rectangle is equal to the product of its width and length, therefore,

$A_{\rm pigpen}=L(640-2L)\implies 640L-2L^2$

Notice that, quadratic has been vertically reflected, since the coefficient on the squared term is negative, so the graph will open downwards, and the vertex will be a maximum value for the area.

recall,

$x_{max}=-b/2a$
$f(x)_{max}=f(x_{max})$

Since our function is A(L)=640L-2L², we get

a=-2
b=640

plug in the value of a and b into the first formula:

$L_{max}=-(640)/2(-2)\implies 160$

$A(L)_{max}=640(160)-2(160)^2\implies 76800$

hence,the dimensions of the pen that will maximize the area are L=160m and W=76800/160=480m

and we're done!

3 0

3 years ago

2-(-2x-4)=3x+6-x what is the answer to that?

ruslelena [56]

98--8=

Step-by-step explanation:

3 0

3 years ago

Find two consecutive positive integers such that the square of the first decreased by

dsp73

Answer:

2 is the answer

Step-by-step explanation:

hope it helps

7 0

2 years ago

I need help assssapp

tekilochka [14]

Your mistake is that 1 pound and 15 ounces does not equal 1.15 pounds. You also did not make everything into the same measurement (you mixed up pounds and ounces). I will make everything into the measurement of ounces, since the numbers do not come out clean if we do pounds.

18 pounds (original) = 288

1 pound 15 ounces = 31 ounces

3 1/8 pound = 50 ounces

4 1/2 pound = 72 ounces

So after cutting out those steaks, Mr. Rand has 288-31-50-72 = 135 ounces. Then, it states that he divides those up into 9 ounce patties:

135/9 = 15 patties

And sells them at 3 for $3.12. There are 5 3's in 15 patties, so it is 5 * $3.12 = Mr Rand receives $15.60 for the patties.

8 0

3 years ago