What is the solution to the system of equations? {x=5y=2x−1 (5, 9) (9, 5) (5, 11) (11, 5)

(5, 9)

Step-by-step explanation:

Given:

The equations to solve are:

Since the value of 'x' is given, we solve this system of equations using Substitution method.

We have to solve this by substituting in the value of 'x' from first equation into second equation.

Therefore, the second equation becomes

Therefore, the values are:

Hence, the solution is in ordered pair form is (5, 9).

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

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step-by-step explanation: