Answer:
(3, 3 )
Step-by-step explanation:
Given the 2 equations
3x - y = 6 → (1)
6x + y = 21 → (2)
Adding the 2 equations term by term will eliminate y, that is
(6x + 3x) + (y - y) = (21 + 6), that is
9x = 27 (divide both sides by 9 )
x = 3
Substitute x = 3 into either (1) or (2) and solve for y
Using (2), then
(6 × 3) + y = 21
18 + y = 21 ( subtract 18 from both sides )
y = 3
Solution is (3, 3 )
Answer:
<b= 48 degree
Step-by-step explanation:
<A + <B + <C = 180 degree (Sum of angles in a triangle)
<A = 90 degree
<B = 2x + 14 degree
<C = 4x - 26 degree
Therefore, <B = 2x + 14 = 2(17) + 14 = 34 + 14 = 48
<b = 48 degree
It would be 90m3 because all the angles are the same
The proof that the diagram is a square is that; D: slopes are perpendicular where the sides meet
<h3>How to Prove a quadrilateral is a Square?</h3>
We know that a square is a quadrilateral that has 4 sides. Now, the 4 sides of a square are all equal and at right angles.
Since all sides of the square are equal, then it means that 2 consecutive sides must be perpendicular to each other. Thus, this means that the slope of 2 consecutive sides must be perpendicular to each other.
Read more about Square proof at; brainly.com/question/4471785
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Answer:
B
Step-by-step explanation:
Because its B
