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seraphim [82]
3 years ago
14

HELP PLZ

Mathematics
1 answer:
777dan777 [17]3 years ago
6 0
The answer corret is :
E.3r-0.9r-5 

3(r-0.3r)-5=3r-0.9r-5

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Suppose all the counting numbers are arranged in columns as shown at the right. Under what letter will the number 1000 appear?
pentagon [3]
Letter D because you need to multiply all the letters of the alfabet (36) and multiply 36 by 1000 and then divide the answer by 100 and you get the letter D
4 0
3 years ago
if △ ABC ~ △A'B'C' and AC=20cm,A'C'=15cm,B'C'=12cm andA'B'=9cm find the lengths of the other sides of △ABC.​
zlopas [31]

Answer:

AB=12    BC=9

Step-by-step explanation:

Any side of a triangle must be shorter than the other two sides added together.

AB and A'B' must measure LESS than  the other 2 sides

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2 years ago
The American Academy of Periodontology released a survey, revealing that 27% of US adults admit they lie to their dentist about
AnnZ [28]

Answer:

Null Hypothesis, H_0 : p = 0.27

Alternate Hypothesis, H_A : p > 0.27

Step-by-step explanation:

We are given that the American Academy of Period ontology released a survey, revealing that 27% of US adults admit they lie to their dentist about how often they floss their teeth.

Periodontist Dr. Garcia believes that the percentage seems low, so he decides to conduct his own hypothesis test to determine the true proportion.

<u><em>Let p = % of US adults who admit they lie to their dentist about how often they floss their teeth</em></u>

So, Null Hypothesis, H_0 : p = 0.27

Alternate Hypothesis, H_A : p > 0.27

Here, <u>null hypothesis states that</u> the % of US adults who admit that they lie to their dentist about how often they floss their teeth is equal to 27%.

On the other hand, <u>alternate hypothesis states that</u> the % of US adults who admit that they lie to their dentist about how often they floss their teeth seems low and is more than 27%.

Also, the test statistics that would be used for conducting this hypothesis test will be One-sample z proportion statistics.

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Answer:

Step-by-step explanation:

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Factor the following perfect square trinomials
Lorico [155]

Answer:

1) (m+3)2

2) (b+6)2

3) (3n−2)^2

Step-by-step explanation:

3 0
3 years ago
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