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xenn [34]
3 years ago
15

What is the value of “a” in the function equation?

Mathematics
1 answer:
trapecia [35]3 years ago
6 0

Answer:     the value of A is 2

Step-by-step explanation:

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Frank is having a raised rectangular platform built. He designed it so that the length of the platform is 4 feet longer than the
Anastaziya [24]
One system of equations would be
L = w+4
H = w-10
4H + 8(wL) = 1544
There is one viable solution; the width is 12, the length is 16, and the height is 2.

Using substitution with the system of equations, we have
4(w-10)+8(w(w+4))=1544
4w-40+8(w²+4w)=1544
4w-40+8w²+32w=1544

Combining like terms, we have
8w²+36w-40=1544

Factoring out a 4, we have
4(2w²+9w-10)=1544

Dividing both sides by 4 gives us
2w²+9w-10=386

Subtract 386 from both sides to get
2w²+9w-396=0

Using the quadratic formula, we have
w=\frac{-9\pm \sqrt{9^2-4(2)(-396)}}{2(2)}
\\
\\=\frac{-9\pm \sqrt{81--3168}}{4}
\\
\\=\frac{-9\pm \sqrt{3249}}{4}=\frac{-9\pm 57}{4}
\\
\\=\frac{-9+57}{4}\text{ or }\frac{-9-57}{4}=\frac{48}{4}\text{ or }\frac{-66}{4}
\\
\\=12\text{ or }-16.5

Since a negative width makes no sense, we know that w=12.

This means L=w+4=12+4=16 and H=w-10=12-10=2
5 0
4 years ago
The derivative of 1/x? I'm blanking on my simple rules here; thanks, actually thought of that right after i asked this whats the
mote1985 [20]
D(1/x)/dx= d(x^-1)/dx
= -x^-2

the derivatives of the two cases you mentioned is as follows:
(I) f(x)=k/x
d{f(x)}/dx= k×(-x^-2)
= -kx^-2

(ll) f(x)=x/k
d{f(x)}= d(x/k)/dx
= 1/k

you can just simply take out the constant from the derivative and multiply it to the final answer of the derivative of the given function.
6 0
4 years ago
Please help me with this problem
salantis [7]
136.75 is the answer to this equation
4 0
4 years ago
Read 2 more answers
Find the function that is represented by the<br> graph.<br> Click on the correct answer.
Eduardwww [97]
B is the correct answer im pretty sure
7 0
2 years ago
Which expression is equivalent to the given expression -1/2(6x+9)-(x-3/2)
12345 [234]

Answer:

-1/2(6x+9)-(x-3/2) \: is \: equivalent \: to \: -2/4(6x+9)-(3x-9/6) \\

8 0
3 years ago
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