3 pencils sell for $0.99, How much would 7 pencils cost.
2 answers:
You might be interested in
<h3>Answer:</h3>
Angle BDR is congruent to angle QDC because they share common angles. Angles BRD and QCD are congruent because lines BR and QC are <em>parallel</em> and line DR intersecting them creates <em>two corresponding angles</em>, BRD and QCD. Because of the reasons I mentioned, Triangles DBR and DQC are similar by Angle Angle Similarity Postulate and because these two triangles are similar they must share the same scaling factor of corresponding sides (example: ). So
.
Answer: 0.3439
Step-by-step explanation:
Total number of digits : 10
The number of digits except zero =9
The probability of selecting non-zero number :-
Then, the probability that one such phone number , the last four digits do not include any zero:-
Then , the probability that for one such phone number, the last four digits include at least one 0:-
Hence, the probability that for one such phone number, the last four digits include at least one 0 is 0.3439 .