Answer:
When we reflect over the y-axis, sign of the x-coordinate changes.
Step-by-step explanation:
Since we know when we'll reflect over y-axis, y-axis will work as a mirror. Y-coordinates will remain same but the only change that happens to any point on the graph is x coordinates.
In second quadrant x-coordinates are negative and in first quadrant positive, while y coordinates are positive in both first and second quadrant. So if we will reflect from first to second or second to first quadrant y-coordinates will remain same but x-coordinates will change..
In third quadrant x-coordinates are negative and in fourth positive, while y coordinates are negative in both third and fourth quadrant. So if we will reflect from third to fourth or fourth to third quadrant y-coordinates will remain same but x-coordinates will change.
Therefore, from above explanation we can conclude that when we reflect over the y-axis, sign of the x-coordinate changes.
Answer: height =8 miles
Base = 15 miles
Step-by-step explanation:
A triangle has 3 sides. Easter island is roughly triangular in shape. The height of the triangle is 7 miles less than the base.
Let h = height of triangle
Let b = base of triangle.
h = b-7 - - - - - - 1
Area of triangle = 1/2 base × height
1/2× b × h = 60 - - - - -2
Put h = b-7 in equation 2
1/2×b×(b-7) = 60
b^2-7b = 2×60=120
b^2-7b - 120=0
Solving the quadratic equation,
b^2 +8b -15b -120=0
b(b+8)-15(b+8)=0
b -15 = 0 or b+8 = 0
b =15 or b = -8
b = 15 because the value cannot be negative.
h = b-7 = 15 -7 =8
4/12 = 1/3
as a decimal 0.3333 recurring and as a percentage 33.3 recurring %
Answer:
n=6m+8
Step-by-step explanation:
we hav to get n by itself
so start easy and add 8 to theother side
n-6m=8 then take 6m and add it the other side
n=6m+8 and there you go
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