All categories

2 years ago

In 2009, a city with a population of 796,000 had 2,388 births. What is the number of births per 10,000 in the city?

Mathematics

1 answer:

Tom [10]2 years ago

7 0

796,000/2388=10,000/x
796,000x= (2388*10,000)
796,000x/796,000=23,880,000/796,000
x=30 births

You might be interested in

Rachel lives in a home with a value of $195,000 and has a mortgage of $160,000. She has electronic equipment worth $2,325. She i

Elan Coil [88]

To Find :

Net worth of Rachel.

Solution :

Net worth is given by the (sum of all the assets she owns) -( total amount of loans she have ).

$Net \ Worth=( 195000+160000+2325+9300+1437+1200)-(875+4800)\\\\Net \ Worth=\$\ 363587$

Therefore, net worth of Rachel is $ 363587.

Hence, this is the required solution.

4 0

2 years ago

Company A charges $331.35 per week for a compact car with unlimited miles. Company B charges $175 per week plus $0.53 per mile,

Vladimir [108]

Answer:

Company A is a better deal than Company B for the number of miles greater than 295 miles

Step-by-step explanation:

Let

y ----> the charge per week in dollars

x ----> the number of miles

we have

<em>Company A</em>

$y=331.35$ -----> equation A

<em>Company B</em>

$y=0.53x+175$ -----> equation B

Solve the system by substitution

Equate equation A and equation B and solve for x

$331.35=0.53x+175$

$0.53x=331.35-175\\0.53x=156.35\\x=295\ mi$

For x=295 miles the charge in Company A and Company B is the same

therefore

Company A is a better deal than Company B for the number of miles greater than 295 miles

5 0

2 years ago

Tim is a sports fan. He spends the "TV-time" of his holidays watching football, cricket, golf, MotoGP, Formula1 races, tennis, b

Aleksandr-060686 [28]

Tim spends $\frac{3}{20}$ of his TV time watching badminton.

Step-by-step explanation:

Step 1:

Tim watches a total of 8 sports. He spends $\frac{2}{5}$ of his TV time watching the first four.

So first we need to calculate how much TV time is left to watch the remaining sports.

The TV time left to watch the other sports $= 1 - \frac{2}{5} = \frac{5-2}{5} = \frac{3}{5}$ .

So $\frac{3}{5}$ of his TV time is spent equally on the other 4 sports.

Step 2:

As there are 4 sports remaining, he spends the $\frac{3}{5}$ of his time on all four sports equally. We need to determine what that time is.

The time spent on the remaining four sports $\frac{\frac{3}{5}}{4} = (\frac{3}{5})(\frac{1}{4} ) = \frac{3}{20}$ .

So Tim spends $\frac{3}{20}$ of his total TV time each on watching formula1 races, tennis, badminton and hockey games. So he spends $\frac{3}{20}$ of his TV time watching badminton.

3 0

2 years ago

The number of times a player has golfed in one’s lifetime is compared to the number of strokes it takes the player to complete 1

AVprozaik [17]

Answer:

B)It is a weak negative correlation, and it is likely causal.

Step-by-step explanation:

TOOK THE TEST it was correct

6 0

2 years ago

The number of siblings an individual has varies from student to student. The distribution of the number of siblings is strongly

ivanzaharov [21]

Answer:

(e) the mean number of siblings for a large number of students has a distribution that is close to Normal.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

By the Central Limit Theorem

The sampling distributions with a large number of students(at least 30) will be approximately normal, so the correct answer is given by option e.

7 0

2 years ago