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DIA [1.3K]
3 years ago
13

Find the perimeter ​

Mathematics
1 answer:
Inga [223]3 years ago
6 0

Answer:

56

Step-by-step explanation:

Perimeter= 4S

Perimeter= 4(5)

Perimeter= 20

Perimeter 2= 2(L+W)

Perimeter 2= 2(11+7)

Perimeter 2= 22+14

Perimeter 2= 36

Total Perimeter= P1+P2

Total Perimeter= 20+36

Total Perimeter= 56

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I really need help with this. Can anyone help me please?
I am Lyosha [343]

Answer:

f(x)=(x-3)(x^2+4x+8)

Step-by-step explanation:

A polynomial function is given by the form:

f(x)=a(x-p)(x-q)...

Where a is the leading coefficient, and <em>p</em> and <em>q</em> are the roots (more can be added if necessary).

Our zeros are 3 and (-2 + 2i).

And our leading coefficient <em>a </em>= 1.

Furthermore, by the Complex Root Theorem, if (-2 + 2i) is a zero, then (-2 - 2i) must also be a zero.

So, by substitution, we acquire:

f(x)=1(x-(3))(x-(-2+2i))(x-(-2-2i))

Simplify:

f(x)=(x-3)(x+2-2i)(x+2+2i)

Expand the second and third factors:

\begin{aligned} &=(x+2-2i)x+(x+2-2i)(2)+(x+2-2i)(2i)\\&= (x^2+2x-2ix)+(2x+4-4i)+(2ix+4i-4i^2)\\&=(x^2)+(2x+2x)+(-2ix+2ix)+(-4i+4i)+(4-4i^2)\\&=x^2+4x+(4+4)\\&=x^2+4x+8    \end{aligned}

Therefore, our polynomial function of least degree and the given zeros will be:

f(x)=(x-3)(x^2+4x+8)

6 0
3 years ago
To ensure he never eats the whole cake, Bobby only decides to eat half of what’s left for each serving. If 2/3 of the cake are l
siniylev [52]
1st serving: 2/3 * 1/2 = 2/6 or 1/3
2nd serving: 1/3 * 1/2 = 1/6
3rd serving: 1/6 * 1/2 = 1/12
4th serving: 1/12 * 1/2 = 1/24
5th serving: 1/24 * 1/2 = 1/48

1/3 + 1/6 + 1/12 + 1/24 + 1/48 
1/3 * 16/16 = 16/48
1/6 * 8/8 = 8/48
1/12 * 4/4 = 4/48
1/24 * 2/2 = 2/48
1/48 * 1/1 = 1/48

16/48 + 8/48 + 4/48 + 2/48 + 1/48 = 31/48

Bobby ate 31/48 of the cake in total.
4 0
3 years ago
You have 236 feet of fence to work with. What the maximum area that can be fenced in?
alexandr1967 [171]

Answer:

The maximum area is 4434.5 feet square.

Step-by-step explanation:

The fence maximum area it need to be fenced have to be shaped as circle. First we need to find radius of the circle:

2*\pi *r=236\\r=37.58

Maximum area will be fenced is:

S=\pi *r^{2} =3.14*37.58^2=4434.5

4 0
3 years ago
-4x -2(8x =1)=-(2x - 10)
lubasha [3.4K]
-4x-2(8x=1)=-(2x-10)

-First, use the distributive property.
So distribute -2 to 8x=1  then distribute the negative - to (2x-10)
So it'd be:  -4x-16x=-2=-2x+10
Then combine like terms:
-20x=-2=-2x+10
-18x=-2=10
-18x=8
Divide -18x by 8
x=-2.25

7 0
3 years ago
On Monday Sarah had homework in 7/10 of her classes, Tuesday 3/5 , Wednesday 9/11 and Thursday 1/2. Which day did she have the m
Rudik [331]
7/10 = 0.70(7 divided by 10)
3/5 = 0.60(3 divided by 5)
9/11 = 0.81(9 divided by 11)
1/2 = 0.50 (1 divided by 2)

Answer: 9/11
5 0
3 years ago
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