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larisa86 [58]
2 years ago
11

3 cm

Mathematics
1 answer:
dolphi86 [110]2 years ago
3 0

Answer:

D.72cm²

Step-by-step explanation:

sa=5(s²)+(s×w)+(L×s)+(s×p)

sa=5(3²)+(3×6)+(2×3)+(3×1)

sa=45cm²+8cm²+6cm²+3cm²

sa=72cm²

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alexira [117]

a. The first variable is x and the second variable is y.

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Step-by-step explanation:

Step 1:

The first step is to define the variables. The variables can be any two symbols, letters, characters, etc.

Here let the first variable be x and the let the second variable be y.

So the variables are defined as x and y.

Step 2:

The sum of the given variables is 12.

The first variable + the second variable = 12,

x+y=12.

The difference between the two variables is 4.

The first variable - the second variable = 4.

x-y=4.

Step 3:

If we add both the equations we get, 2x =16, x= 8 and y=4.

x = 8 and y = 4.

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3 years ago
Please help ! I don’t get it!
Amiraneli [1.4K]

Answer:

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Step-by-step explanation:

6/8 = (x-3)/(x+1)

8x-24 = 6x+6

simplify

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SR = 15 - 3 = 12

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Hannah is 24years of age

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