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yanalaym [24]
3 years ago
12

The coordinates of point A on a grid are (−2, −4). Point A is reflected across the y-axis to obtain point B. The coordinates of

point B are (
, −4).
Mathematics
1 answer:
SpyIntel [72]3 years ago
4 0

Answer:

B = (2, - 4)

Step-by-step explanation:

Under a reflection in the y- axis

A point (x, y) → (- x, y), hence

A(- 2, - 4) → B(2, - 4)

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2 years ago
The measure of one angle is 13 less than five times The measure of another angle. The sum of the measure of the two angles is 14
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\huge\boxed{a=\frac{229}{2};\ \ b=\frac{51}{2}}

<em>In decimal form, a = 114.5; b = 25.5</em>

We will write this as a system of equations, where a and b are the two angles.

\left \{ {{a=5b-13} \atop {a+b=140}} \right

We will use substitution to solve this system. We know what a equals, so we plug that into the second equation.

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