Log3 (x squared + 7x + 21) = 2
1 answer:
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Given:
ABC is an isosceles triangle in which AC =BC.
D and E are points on BC and AC such that CE=CD.
To prove:
Triangle ACD and BCE are congruent.
Solution:
In triangle ACD and BCE,
(Given)
(Common angle)
(Given)
In triangles ACD and BCE two corresponding sides and one included angle are congruent. So, the triangles are congruent by SAS congruence postulate.
(SAS congruence postulate)
Hence proved.
Answer:
194
Step-by-step explanation:
Recall 2 rules to solve this easily:
1.
2.
<em>Now, if we let a = 7 and , we can say the problem is basically of the form:</em>
This can be simplified using the rules:
Now we can plug the values of a and b we initially thought of (remember though ):
194 is the final answer.