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yarga [219]
3 years ago
13

9 Marty conducted a survey in his first period class to determine student preferences for music. Out of 25 students, 14 like hip

-hop music best. There are 300 students in Marty's school. Based on the survey, how many students in the school like hip- hop music best? A. 50 students B. 132 students C. 168 students D. 261 students​
Mathematics
1 answer:
S_A_V [24]3 years ago
6 0

Answer:

C

Step-by-step explanation:

14/25=0.56 0.56x300=168

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A vaccine, which is currently in use, is known to be 80% effective. A pharmaceutical company has developed a newvaccine and the
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Answer:

The correct answer is B) 18%

Step-by-step explanation:

Note that the vaccine is already and is 80% effective. This means that if the entire population was administered with the vaccine, only 8/10 would gain immunity leaving 2/10 or 0.2 exposed.

If the new vaccine, therefore, is supposed to be 90% effective, it is only pragmatic to administer it against those who do not have immunity which is 0.2 of the existing population.

So to get the percentage that will develop immunity, we have:

0.2 x 0.9 = 0.18 or 18%

Cheers!

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3 years ago
A cable installer charges $30.00 per hour plus a $50.00 service charge. Your father's firm hires him to hookup his company's int
vladimir1956 [14]
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3 years ago
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anyanavicka [17]

Answer: 4/5

Step-by-step explanation:

3 0
3 years ago
What is the value of the square root of 36
irakobra [83]
6

Like how 6^{2} = 36

Square root does the opposite.

Edit: my mistake, it is 6
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3 years ago
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Plzzz help me I don’t understand aTT ALL if I don’t do it I’ll get a 0 in my report card plz help
Digiron [165]

Answer:

hi there! i can help you out! i don't want you to get a zero on your report card!!

Step-by-step explanation:

so, on the x-axis, which is all the numbers through 1-10 and there are the patient's number. so for ex, the first question says patient 1 : 3 hours right??

so the hours are the y-axis and you can label them 2,4,6,8 because skip counting by twos are probably the easiest! so for the first question, you would line a dot up on top of 1 and go up and you see 2 and 4 right, cuz you just labeled it... do go between 2 and 4 which is 3 and place the dot there...

and keep doing the same things with other ones too...

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