Stella solves the following system of equations using the substitution method. y=−4x−65x−y=10

What is the single-variable equation she solves after substituting?
A. 5x−4x−6=10
B. 5x−(−4x−6)=10
C. 5x+10=−4x−6
D. 5x+10=−(4x−6)

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  B. 5x−(−4x−6)=10

Step-by-step explanation:

The first equation gives an expression for y:

  y = -4x -6

When that is used in the second equation, the result is ...

  5x -y = 10

  5x -(-4x -6) = 10 . . . . . . after substituting; matches B

a. 32 degrees

step-by-step explanation:

here we have to use the rule.

m∠e = 1/2 (major arc - minor arc)

m∠e = 1/2 (212 - 148)

m∠e = 1/2 (64)

m∠e = 32 degrees

answer: a. 32 degrees

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