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creativ13 [48]
3 years ago
14

I need help on #20 please

Mathematics
1 answer:
olganol [36]3 years ago
8 0

Answer:

  P = 10x³ + 4x² + 8x + 6

Step-by-step explanation:

The perimeter of a rectangle is twice the sum of length and width.

  P = 2(L+W) = 2((x³ +2x² -6x +12) +(4x³ +10x -9))

  = 2(5x³ +2x² +4x +3) . . . . collect terms inside parentheses

  P = 10x³ +4x² +8x +6

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How to solve -2p^2=16p+24
frozen [14]

Add  2p²  to each side of the equation.  Then you have

                 2p² + 16p + 24  =  0 .

Before you roll up your sleeves and start working on it, you can make it
even more convenient if you divide each side by  2 .  Then you have:

                 p² + 8p + 12 = 0 .

Now you have a nice, comfortable, familiar-looking quadratic equation. 
You can either factor the left side into  (p + 6) (p + 2), or, if you can't find
the factors, you can apply the quadratic formula to it.

That's how to solve it, and find its two solutions.


8 0
3 years ago
PLEASE PLEASE PLEASE HELP I WILL GIVE BRAINLIEST
Marat540 [252]

Answer:

y >  6x -100  

Step-by-step explanation:

the slope intercept equation of the line is

y=mx+b

m is the slope = (y2-y1) / (x2-x1) so between the y-intercept (0,-100) and the given point (25, 50) we have m= -100-50/0-25 = -150/-25 = 6

y= 6x -100

now we have to figure the inequqlity part so take point (0, 0) that belongs to the solution and substitute in the equation

0 = 6*0 -100

0 = -100  for the equation to be true we have to make it 0 > -100, we also need to make it NOT greater or equal then because the line is doted not solid  so the inequality is

y >  6x -100  

4 0
3 years ago
Read 2 more answers
Look at points C and D on the graph: point C (-2,0), point D (2,4)
Svetach [21]
The answer to the question you are looking for is right in front of u
6 0
3 years ago
Use f(x)=-2x+5 to find x when f(x)=11
Damm [24]
When it asks this question, ultimately you want to plug 11 into x because its f(x). 11=-2+5.

Then you subtract 5 on both sides because of the opposite of addition is subtraction.

6=-2x

now divide on both sides

x=-3
3 0
2 years ago
Find the mean of the rainfall amounts .
anygoal [31]

Answer:

2.25 inches

Step-by-step explanation:

The mean, or the average, or the rainfall amounts, can be found by adding all of the amounts together and dividing by the number of amounts. In this case, \frac{3+2+1+3}{4}=\frac{9}{4}=2.25. Hope this helps!

6 0
3 years ago
Read 2 more answers
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