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Anika [276]
3 years ago
9

9. (3x + 4y)² – (3z) 2square​

Mathematics
2 answers:
rodikova [14]3 years ago
5 0
Solution: (3x + 4y - 3z) x (3x + 4y + 3z)
S_A_V [24]3 years ago
4 0

Answer:

(3x + 4y - 3z)(3x + 4y + 3z)

Step-by-step explanation:

(3x + 4y)² - (3z)² ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

Here a = 3x + 4y and b = 3z, then

(3x + 4y)² - (3z)²

= (3x + 4y - 3z)(3x + 4y + 3z) ← in factored form

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grigory [225]

Answer:

7.

f(n) = 80*3^n

8.

f(n) = 4 * 3^(n - 1)

7 0
3 years ago
Complete the table above.
4vir4ik [10]

\bf \begin{array}{|c|c|c|ll}
\cline{1-3}
x&y=3x^2&y=3^x\\
\cline{1-3}&&\\
0&\stackrel{3(0)^2}{0}&\stackrel{3^0}{1}\\&&\\
1&\stackrel{3(1)^2}{3}&\stackrel{3^1}{3}\\&&\\
2&\stackrel{3(2)^2}{12}&\stackrel{3^2}{9}\\&&\\
\cline{1-3}
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4 0
3 years ago
Kevin drove for 4 hours and then stopped to eat dinner. The total distance he had driven at different time intervals is shown on
natta225 [31]

Answer:

If you want a simple average, you can add all the speeds you see and divide them by the number of how many they are.  

So firstly you have to calculate the speed of the first point, which is:  

20 miles/0.5 hour

That means: 40 miles/hour

That would be your first "speed"

Then you calculate all of them :speed1+speed2+speed3 = something.  

As an example: 20miles/hr + 40miles/hr+0miles/hr = 60miles/hr

Then, you divide it by how many "speeds" they are: 60miles/hr divided by 3 if I continue my previous example.

It is my first answer, and I hope I could help you a bit!

Sorry for the awkward English, as it is not my mother tongue.

Step-by-step explanation:

8 0
2 years ago
Please help with both if you can!<br><br> Thank you!
Alexxandr [17]

Answer:

15). is done

16).

slope =  \frac{ {y}^{1} -  {y}^{o}  }{ {x}^{1}  -  {x}^{o} }  \\  =  \frac{2 - ( - 2)}{ - 3 - 9}  \\  =  \frac{4}{ - 12}  \\ slope =  -  \frac{1}{3}

8 0
2 years ago
P^7n^3/p^4n^2 simplified <br> a.p^3n <br> b.p^11n^5 <br> c.(1/p^3n) <br> d.(1/p^11n^5)
Fynjy0 [20]
I think the answer is A. Cause your supposed to subtract so 7n-4n=3n, and 3-2=1 :) I hope this helps
5 0
3 years ago
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