3 years ago

HELP ASAP!!!!! WILL GIVE 20 POINTS AND BRAINLIEST!!!!!

Mathematics

1 answer:

Gala2k [10]3 years ago

4 0

Answer:

Step-by-step explanation:

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Translate the following phrase: Tom can spend no more than 20 dollars on his mom's birthday present. a) t>20 b) t<20 c) 20

tiny-mole [99]

Answer:

get help by a tutor

Step-by-step explanation:

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3 years ago

The school that Billy Bob goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3

svp [43]

Answer:

if your looking for the ordered pair its 8,14....But if you looking for the answer for the prices it

for grandpa 8 dollars

For children 14 dollars

write

S8,C14

Step-by-step explanation:

Litterally the answer is the ordered pair and the answer is on the graph shown in the problem.

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3 years ago

An environmental science teacher at a high school with a large population of students wanted to estimate the proportion of stude

AnnZ [28]

Answer:

60 students

Step-by-step explanation:

The confidence interval of a proportion is given by:

$p\pm z*\sqrt{\frac{p*(1-p)}{n} }$

Where 'p' is the proportion of students who responded 'yes', 'z' is the z-score for a 95% confidence interval (which is known to be 1.960), and 'n' is the number of students in the sample.

If the confidence interval is from 0.584 to 0.816, then:

$p=\frac{0.584+0.816}{2}=0.7 \\0.816-0.584=2*(1.96*\sqrt{\frac{p*(1-p)}{n}}) \\0.116=1.96*\sqrt{\frac{0.7*(1-0.7)}{n}}\\n=16.8966^2*(0.7*0.3)\\n=60\ students$