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Anvisha [2.4K]
3 years ago
10

3x+10y=13 4(-2y+x)-9x=13

Mathematics
1 answer:
mart [117]3 years ago
8 0

Answer:

x=-9

y=4

Step-by-step explanation:

3x+10y=13 ← Equation 1

4(-2y+x)-9x=13\\

By simplifying the above equation we get,

-8y+=4x-9x=13 (Simplifying the brackets)

-8y-5x=13 (By subtracting -9x from +4x) ← Equation 2

Multiply Equation 1 by 5 and Equation 2 by 3 and add them together.

Equation 1 multiplied by 5 will give,

15x+50y=65

Equation 2 multiplied by 3 will give,

-24y-15x=39

Add those together,

15x+50y-24y-15x=65+39

26y=104 (After simplifying x values)

Therefor y=4

By substituting y=4 to Equation 1 we get,

3x+10*4=133x+40=13\\3x=-27\\x=-9

Therefor we can say,

x=-9

y=4

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Answer:

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Step-by-step explanation:

We have that:

f(x) = 2x

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f(g(x)) is the composite function of f and g. So

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1. f(g(3))

f(g(x)) = 2x² - 2 = 2(3)² + 2 = 18 + 2 = 20

2. f(3)+g(4)

f(3) = 2(3) = 6

g(4) = 4² + 1 = 17

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3 years ago
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Factories 24a³ + 37a² – 5a​
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Answer:

a(8a-1)(3a+5)

Step-by-step explanation:

24a³ + 37a² – 5a =

a ( 24a²+ 37a -5) =

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boyakko [2]
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Putting this together, the area is the sum of:
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Since you are given the function f(x). Sub input into f(x) to get area in terms of n and i.

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Answer:

the answer is 55

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x + x + 90 = 180

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2x = 180- 90 = 110

x = 110 ÷ 2 = 55

5 0
3 years ago
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