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nika2105 [10]
2 years ago
14

How do you find the area of pentagons like this?

Mathematics
1 answer:
Andrej [43]2 years ago
3 0

Answer:

<h3>Hi answer: 41</h3>

What I do for these is do the shapes separately and use the appropriate formulas! Then add them Up! So the easiest is the rectangle that would be 5 × 4 = 20 then the triangles would be 5 x 1 = 5 then ÷ by 2 = 2.5 but since there are two of those triangles we just multiply by 2 again so 2.5 × 2 = 5 for the last two triangles at the top it would be 4 × 4 = 16 then ÷ by 2 = 8 but since theres 2 triangles multiply by 2 so 8 × 2 = 16 now we add all of these numbers up so 20 + 5 + 16 = 41 Hope that helps!

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What is the value of X
Volgvan

Answer:

Step-by-step explanation:

it's another one of those similar triangles

it's easier to see this one.

t /c = u / b

where

t = 7x + 3

c = 27

u = 35

b = 21

plug in the knowns

7x + 3 / 27 = 35 / 21

7x + 3  = 27 ( 35 / 21 )

7x + 3 = 9 ( 35 / 7 )     ( divided by 3 )

7x  + 3  = 9 ( 5)     ( 7 into 35 =5 )

7x  + 3  = 45

7x = 45 - 3

7x = 42  

x = 6

I checked it, the ratio is 1_2/3  :) for both, but you can check it too

7 0
3 years ago
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sertanlavr [38]
First you distribute the six -138>-36b+42 Then you subtract 42 -180>-36b Next, you divide by -36 and since you are dividing by a negative, you turn the sign around 5
6 0
3 years ago
A function f (x)=-8x^2. What is f (-3)?
Sveta_85 [38]
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f(-3)= -8* (-3)²

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8 0
3 years ago
Read 2 more answers
Does anyanyone know
Ksju [112]

Answer:

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Step-by-step explanation:

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<u>-    6x² + 3x - 11        </u>

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8 0
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Vertex (-3,1)
No xinters
Y-inter (0,37)
7 0
3 years ago
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