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UNO [17]
2 years ago
14

Solve the system of equations using substitution. Y= 2x - 10 Y= 4x - 8

Mathematics
1 answer:
Oksana_A [137]2 years ago
8 0

Answer:

Step-by-step explanation:

4x - 8 = 2x - 10

2x - 8 = -10

2x = -2

x = -1

y = 4(-1) - 8 = -4 -8 = -12

(-1, -12)

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Answer:

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Step-by-step explanation:

Given

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x : y = 16 : 9

Required

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First, we calculate the width using the following equivalent ratios

16: 9 = x : 20.6

Express as fraction

\frac{16}{ 9} = \frac{x }{ 20.6}

Solve for x

x = 20.6 * \frac{16}{ 9}

x = 36.62

Hence:

Width = 36in --- approximated

So, we have:

x = 36.62

y =20.6

The size (diagonal) is then calculated using:

Size = \sqrt{x^2 + y^2

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Size = \sqrt{1765.3844

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3 years ago
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