Answer:
Step-by-step explanation:
All she needs to know is that a reflection across the x-axis is when the x coordinate stays the same and the y-coordinates change.
Hope this helped.
Answer:
-0.3110625
Step-by-step explanation:
-0.21*(-2.37) = 0.4977
0.4977*-.625 = 0.3110625
Step-by-step explanation:
If ∠1 and ∠2 are supplementary, then m∠1 + m∠2 = 180° (1).
If ∠2 and ∠3 are supplementary, then m∠2 + m∠3 = 180° (2).
From (1) we have
m∠1 + m∠2 = 180° /<em>subtract m∠1 from both sides</em>
m∠2 = 180° - m∠1
<em>substitute it to </em><em>(2)</em>
(180° - m∠1) + m∠3 = 180°
180° - m∠1 + m∠3 = 180° <em>/subtract 180° from both sides</em>
- m∠1 + m∠3 = 0 <em>/add m∠1 to both sides</em>
m∠3 = m∠1 ⇒ m∠1 = m∠3 ⇒ ∠1 ≅ ∠3
138/6 = 23 :)
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