MATHEMATICS COLLEGE

In a school of 500 students, 30% had I-Phones. The percent of boys to giwere 25% and 75% respectively.
A. Calculate (I) the number of students with I-PhonesIn a school of 500 students, 30% had I-Phones. The percent of boys to gi
vere 25% and 75% respectively.

Answers

Answer 1
Answer:

Answer:

tbh,I would calculate the girls to boys ratio.

Step-by-step explanation:

I mean, them boys gotta be in female heaven.

25% of them, the rest being girls, dang, imagine being handsome. lots of gf's

and FYI, it's iPhone not an i-phone.

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In the right triangle, if a = 3 and b = 6, what is the value of c?a 3 times the square root of 5
b 9
c 9 times the square root of 5
d 45

Answers

Answer:

A

Step-by-step explanation:

Using the pythagorean theorem, a^(2) +b^(2) =c^(2)

we plug the numbers in; 3^(2) + 6^(2) =c^(2)

9+36=c^2

45=c^2

sqr root of 45 is √(45)

next find the positive perfect sqr root of 45 which will be 9.

9 goes into 45 5 times so it will be √(9x5)

Sqr root of 9 is 3 so it will be 3 √(5)
A I had took the quiz

rafael counted a total of 40 white and yellow cars. there are 9 times as many white cars as yellow cars. how many white cars did rafael count.

Answers

Answer:

360

Step-by-step explanation:

40 times 9 = 360

there are 360 yellow cars

or we can do it like this

360 divided by 9 = 40

or 360 divided by 40 = 9

pls mark me brailest for real  :,,(

Answer:

360

Step-by-step explanation:

9 x 40 = 360

If you divide 360 by 9 it will give you 40,

or if you divide 360 by 40 it will give you 9.

1/4÷(-2/3) =3/8 she is right now did she get the answer​

Answers

Answer:

  see below for the working

Step-by-step explanation:

Dividing by a number is the same as multiplying by the inverse of that number.

\displaystyle(\left((1)/(4)\right))/(\left(-(2)/(3)\right))=-(1)/(4)\cdot(3)/(2)=-(3)/(4\cdot 2)=-(3)/(8)

Polygon V has an area of 1 square unit. Jun-seo drew a scaled version of Polygon V using a scale factor of 7 and labeled it Polygon W.

Answers

Answer:

49

Step-by-step explanation:

Answer:

it is 49 for sure

Step-by-step explanation:

it worked for me on khan

which of the following is among the likely causes of a non-random sample? a. non response bias b. parameter c. statistics d. population

Answers

Answer:

a. non response bias

This is one of the usually cause when we use a non-random sample, sinc the probability of selection for all the individuals on the population is not the same when we use this, we are comitting non response bias since we are not taking in count some people in the possible target sample.

Nonresponse bias is "the bias that results when respondents differ in meaningful ways from nonrespondents. Nonresponse is often problem with mail surveys, where the response rate can be very low".

Step-by-step explanation:

Random sample

For this method we need the following two conditions:

(1) "Every element in our population has a nonzero probability of being selected as part of the sample."

(2)" We have accurate knowledge of this probability, known as the inclusion probability, for each element in the sampling frame".

Non random sample

It's the opposite of random sample and we have these problems associated:

(1) "It is relatively unusual to have a sampling frame available to you when you’re conducting market studies".

(2) "Ensuring that every individual in a population has a nonzero probability of being selected is just as difficult to accomplish; knowing every sampling unit’s exact inclusion probability is even more difficult. The individuals that cannot be selected as part of a sample are generally referred to as excluded units".

Assuming the following options:

a. non response bias

This is one of the usually cause when we use a non-random sample, sinc the probability of selection for all the individuals on the population is not the same when we use this, we are comitting non response bias since we are not taking in count some people in the possible target sample.

Nonresponse bias is "the bias that results when respondents differ in meaningful ways from nonrespondents. Nonresponse is often problem with mail surveys, where the response rate can be very low".

b. parameter

False we are looking for a cause related to non random sample. The parameter is just a value that we want to find but is not a cause related to the non random sample.

c. statistics

False, we can associate a cause of non random sample with the statistics. The term "statistics" is a big concept that involves a lot of methods and ways to analyze information, and is not the correct cause associated to the non-random sample.

d. population

False, we can associate the population as a cause of the non random sample. We use sampling methods in order to estimate some population parameters. But the population is not a cause of the non-random sample.

Please help me with this real quick

Answers

Answer: 7.5 miles

Step-by-step explanation:

think of it as a triangle; the bold line is the hypotenuse, or x.

 8   |\   x

      |_\              it's not a good triangle but you get the point

       6

and then get out pythagorean theorem: a^2+b^2=c^2

put the numbers in: 8^2 + 6^2 = x^2

do some math:

64+36=x^2

100=x^2 (and then find square root)

10=x

BUT, it said each unit was 3/4 of a mile, so we must multiply 10 by 3/4 to get the actual distance, which is 7.5
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