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iren2701 [21]
3 years ago
12

Question 3

Mathematics
1 answer:
Likurg_2 [28]3 years ago
8 0

Answer:

27cm

Step-by-step explanation:

first, separate the 2 shapes you will find the area too. these would be the little 3 by 3 block sticking out on top, and the other piece.

to find the area, you have to do length times width.

you can start off with the 3 by 3 block. 3 times 3 = 9cm

next, you have to find the measurements of the rectangular shape. we know the width is 6cm. and the length of the whole shape is also 6cm. but we can take off the 3cm from the other shape. we now have 3cm leftover to be the length for the rectangle.

we can now find the area for the rectangle. 6 times 3 = 18cm.

last but not least, we can add the 2 measurements up to get the area of the whole shape. 9 + 18 = 27cm.

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Persamaan garis lurus yang melalui titik potong garis dengan persamaan 2x+5y=1 dan x-3y=-5 serta tegak lurus garis dengan persam
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pertama menemukan tempat di mana dua persamaan mencegat<span>
2x+5y=1
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</span>
kalikan persamaan kedua ( x - 3y = -5 ) oleh -2
-2x+6y=10
<span>tambahkan dua persamaan bersama-sama
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<u>-2x+6y=10 +</u>
0x+11y=11
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subsitute y = 1 untuk y dalam semua persamaan untuk memecahkan x
x-3y=-5
x-3(1)=-5
x-3=5
x=8

x=8
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(x,y)
<span>titik persimpangan adalah ( 8,1 )

</span>
<span>untuk membuat menemukan garis tegak lurus lebih mudah , mengkonversi persamaan terakhir ke bentuk lereng - intercept
2x-y+5=0
2x+5=y
y=2x+5
</span>
<span>garis tegak lurus memiliki kemiringan yang , bila dikalikan dengan kemiringan garis lainnya , memberikan -1
y=mx+b
m=</span>lereng

y=2x+5
2 <span>dikalikan x=-1
x=-1/2
y=-1/2x+b
</span><span>subsitute ( 8,1 ) ke dalam persamaan dan memecahkan untuk b
x=8
y=1
1=-1/2(8)+b
1=-4+b</span>
tambahkan 4 untuk kedua belah pihak
5=b
<span>persamaan adalah y=-1/2+5
</span>
<span>( Catatan : Saya menggunakan google translate )</span>



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Answer:

(A∩B)´U C´

U= {1,2,3,4,5,67,8}

A={1,2,4,5}

B={2,3,5,6}

C= {4,5,6,7}

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(A∩B)´U C´={1,3,4,6,7,8} U {1,2,3,8}=  {1,2,3,4,6,7,8}

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