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2 years ago

X=6 y=2x-3 i’m doing Solve Systems of Equations by Substitution.

Mathematics

2 answers:

mrs_skeptik [129]2 years ago

5 0

Y=9
because y=2•6-3
2x6=12
12-3=9

Oksana_A [137]2 years ago

4 0

y=9

Step-by-step explanation:

y=2(6)-3

y=12-3

y=9

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Answer: see proof below

<u>Step-by-step explanation:</u>

$\dfrac{1+\sec A}{\sec A}=\dfrac{\sin^2 A}{1-\cos A}$

Use the following Identities:

sec Ф = 1/cos Ф

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<u>Proof LHS → RHS</u>

$\text{LHS:}\qquad \qquad \dfrac{1+\sec A}{\sec A}$

$\text{Identity:}\qquad \qquad \dfrac{1+\frac{1}{\cos A}}{\frac{1}{\cos A}}$

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$\text{Identity:}\qquad \qquad \dfrac{\sin^2 A}{1-\cos A}$

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Step-by-step explanation:

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