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Viktor [21]
3 years ago
9

Pls help me with this I'm not great with functions thx

Mathematics
2 answers:
Svetlanka [38]3 years ago
8 0
Part B: input+11
i think
ZanzabumX [31]3 years ago
4 0
Part b pic is not a function because they have repeating X factors
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Help!!!!! stuck on this
8090 [49]
I hope this helps you




Pythagorean



hypothenus ^2=base^2+height ^2



hypothenus ^2=15^2+20^2



hypothenus ^2=225+400



hypothenus ^2=625



hypothenus ^2=25
7 0
3 years ago
X2 - 7x + 9 =0 please leave answer in surf form and simplify ​
777dan777 [17]

Answer:

x = \frac{7}{2} ± \frac{\sqrt{13} }{2}

Step-by-step explanation:

Given

x² - 7x + 9 = 0 ( subtract 9 from both sides )

x² - 7x = - 9

Solve using the method of completing the square

add ( half the coefficient of the x- term)² to both sides

x² + 2( - \frac{7}{2} )x + \frac{49}{4} = - 9 +

(x - \frac{7}{2} )² = \frac{13}{4} ( take the square root of both sides )

x - \frac{7}{2} = ± \sqrt{\frac{13}{4} } = ± \frac{\sqrt{13} }{2} ( add

x = \frac{7}{2} ± \frac{\sqrt{13} }{2} = \frac{7+/-\sqrt{13} }{2}

4 0
3 years ago
Read 2 more answers
3.If x=3, what is the value of 3?​
algol13

Answer:

is it proper question I am sorry I canot understand

8 0
2 years ago
Y= (x-9) (x+3)
juin [17]

Answer:

y = x² − 6x − 27

Step-by-step explanation:

To distribute, you can use something called FOIL.  It stands for First, Outer, Inner, Last.

First, multiply the First term in each factor.

x · x = x²

Now multiply the Outer terms in each factor.

x · 3 = 3x

Next multiply the Inner terms in each factor.

-9 · x = -9x

Finally, multiply the Last terms in each factor.

-9 · 3 = -27

Add them all up:

x² + 3x − 9x − 27

x² − 6x − 27

4 0
3 years ago
An electronics retailer offers an optional protection plan for a mobile phone it sells. Customers can choose
Darina [25.2K]

Answer:

$79

Step-by-step explanation:

That's the Khan Academy answer

8 0
3 years ago
Read 2 more answers
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