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melody32
26.05.2020 •
Mathematics
-3+3w=-18
I need help please
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Ответ:
w=-5
Step-by-step explanation:
3w=-18+3
3w=-15
w=-5
Ответ:
Work:
-3+3w=-18 add 3 on both sides to cancel out -3 which is also the first step to isolating w
3w=-15 divide both sides by 3 to isolate w.
W=-5 a negative divided by a positive is a negative.
Hope this helped
Ответ:
Given: AD ≅ BC and AD ∥ BC
Prove: ABCD is a parallelogram.
Statements Reasons
1. AD ≅ BC; AD ∥ BC 1. given
2. ∠CAD and ∠ACB are alternate interior ∠s 2. definition of alternate interior angles
3. ∠CAD ≅ ∠ACB 3. alternate interior angles are congruent
4. AC ≅ AC 4. reflexive property
5. △CAD ≅ △ACB 5. SAS congruency theorem
6. AB ≅ CD 6. Corresponding Parts of Congruent triangles are Congruent (CPCTC)
7. ABCD is a parallelogram 7. parallelogram side theorem