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Molodets [167]
3 years ago
6

How to do this question plz ​

Mathematics
2 answers:
bixtya [17]3 years ago
7 0

252mmSquared

Step-by-step explanation:

28+28=56

74-56=18

18÷2=9

9×28=252

galina1969 [7]3 years ago
6 0

Answer:

A=252

Step-by-step explanation:

B=28mm

P=74mm

we know the two sides of B= 28

28+28= 56

the perimeter is every added up P= 74

so we must minus 56-74 = 18

meaning side A= 18 then we divide it by 2 which is 9

to check... 9+ 28+9+28 = 74 same answer if 18+56= 74

Formula for Area = Lxw meaning 9x28

9x28 = 252

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2 years ago
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Answer:

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Step-by-step explanation:

2x - y= 3 ...........equation 1

x + 5y= 14 ............equation 2

Make x the subject of the formula in equation 2

x= 14 - 5y ..............equation 3

Substitute x=14 - 5y in equation 1

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Collect like terms

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divide both sides by coefficient of y

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x=14 - 5(25/11)

x= 14 - 125/11

x= 29/11

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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