1 answer:
Answer:
Shown Below
Step-by-step explanation:
Alright so first off we are going to use the little 67 on that corner. We know that it's a supplementary angle, and supplementary angles add up to 180.
180 - 67 = 113.
Inside angles of a triangle all add up to 180. Using that we can create the equation:
(x + 27) + x + 113 = 180
simplify.
2x + 140 = 180
subtract 140 on both sides.
2x = 40
divide both sides by 2
x = 20
substitute x into the asked equation.
(20 + 27) = 47
47 is your answer.
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Answer:
B. (-1, 2) and (4,7)
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
U take half of the x term and square it....then add to both sides 14/2 = 7.......7^2 = 49...so u add 49 to both sides
Answer:
c
Step-by-step explanation:
number is 21
let the number be n then dividing by 3 gives and adding - 3 gives
- 3 = 4 ( add 3 to both sides )
= 7 ( multiply both sides by 3 )
n = 3 × 7 = 21
Answer:
False
Step-by-step explanation: