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DedPeter [7]
3 years ago
14

What is the product of the polynomials below?

Mathematics
2 answers:
AysviL [449]3 years ago
8 0
Hi there! The answer is C.

(5 {x}^{2}  + 5x + 7)(8x + 6) =  \\ work \: out \: parenthesis \\  \\  40 {x}^{3}  + 30 {x}^{2}  + 40 {x}^{2}  + 30x + 56x + 42 =  \\ collect \: terms \\  \\ 40 {x}^{3}  + 70 {x}^{2}  + 86x + 42
drek231 [11]3 years ago
6 0
The answer is C

40x3 + 70x2 + 86x + 42
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Well what I would do is how much do I have to multiply by to get 150 trees which is 1.5. So now we take the 1.5 and the 2 hour multiply them and now we have 3. 3 hours is your answer
4 0
3 years ago
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What is the equation when y=5x+4 is reflected over the x-axis, y-axis & y=x?
tigry1 [53]

Answer:

A) y=-5x-4

B) y=-5x+4

C) y=\frac{x-4}{5}

Step-by-step explanation:

So we have the equation:

y=5x+4

Let's write this in function notation. Thus:

y=f(x)=5x+4

A)

To flip a function over the x-axis, multiply the function by -1. Thus:

f(x)=5x+4\\-(f(x))=-(5x+4)

Simplify:

-f(x)=-5x-4

B) To flip a function over the y-axis, change the variable x to -x. Thus:

f(x)=5x+4\\f(-x)=5(-x)+4

Simplify:

f(-x)=-5x+4

C) A reflection over the line y=x is synonymous with finding the inverse of the function.

To find the inverse, switch x and f(x) and solve for f(x):

f(x)=5x+4

Switch:

x=5f^{-1}(x)+4

Subtract 4 from both sides:

x-4=5f^{-1}(x)

Divide both sides by 5:

f^{-1}(x)=\frac{x-4}{5}

And we're done :)

7 0
3 years ago
×/5=2 what is it i need help with homework
serious [3.7K]
X divided by two is 5
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3 years ago
Find the measure of the interior angles.
nexus9112 [7]
Interior angles of a triangle should always add up to 180.
180-154=26
26-13=13
X=13
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3 years ago
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