1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SVETLANKA909090 [29]
3 years ago
9

How many kilometres on the ground is represented by 9 cm on the map?

Mathematics
1 answer:
Aloiza [94]3 years ago
3 0

Answer:

22500

Step-by-step explanation:

You have to multiply 9 by 25000.

You might be interested in
Express 315m/s into km/h (with the working)​
NARA [144]

Answer:

315 m/s = 1134 km/h

Step-by-step explanation:

Multiply the speed value by 3.6

315 x 3.6 = 1134

8 0
3 years ago
Yapın.............. Bir sürpriz.. yardımcı olur musunuz ​
borishaifa [10]

Answer:

parmak izlerimiz birbirinden farklıdır.

bireysel farklılıklara saygı duyulması insanlar birbirlerini asalanaya başlar ülkede iç savaş çıkabilir mesela

3 0
3 years ago
3. Consider the medical procedure described in the previous question, and suppose a patient is charged $24,900 for the procedure
Gekata [30.6K]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
Reading proficiency: An educator wants to construct a 99.5% confidence interval for the proportion of elementary school children
Shkiper50 [21]

Answer:

A sample size of 345 is needed so that the confidence interval will have a margin of error of 0.07

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error of the interval is given by:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

In this problem, we have that:

p = 0.69

99.5% confidence level

So \alpha = 0.005, z is the value of Z that has a pvalue of 1 - \frac{0.005}{2} = 0.9975, so Z = 2.81.

Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.07?

This is n when M = 0.07. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.07 = 2.81\sqrt{\frac{0.69*0.31}{n}}

0.07\sqrt{n} = 1.2996

\sqrt{n} = \frac{1.2996}{0.07}

\sqrt{n} = 18.5658

(\sqrt{n})^{2} = (18.5658)^{2}

n = 345

A sample size of 345 is needed so that the confidence interval will have a margin of error of 0.07

4 0
3 years ago
One of the rows in the table has an error and does not have the same ratio as the other rows. Which explains how to correct the
hram777 [196]
<span>Row 1 3 ft  91.44 cm
The ratio is 91.44 cm/ 3 ft = 30.48 cm/ft

</span><span>Row 2 6 ft 172.88 cm
The ratio is 172.88 cm / 6 ft = 28.81 cm/ft which ius not the same as 30.48 cm/ft.

</span><span>Row 3 7 ft 213.36 cm
</span>
<span>The ratio is 213.36 cm/ 7 ft = 30.48 cm/ft, which is the same as the first ratio.

Since 2 rows have the ratio 30.48 cm/ft, this ratio is correct. The ratio 172.88 cm / 6 ft is incorrect.

6 ft * 30.48 cm/ft = 182.88 cm

Answer: </span>
<span>B.Row 2 should show 6 feet is equivalent to 182.88 centimeters.</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP I GIVE THANKS
    14·1 answer
  • What is the Decimal Equivalent to 1/3?
    7·1 answer
  • A decorative floor pattern has 1 red square tile surrounded by 12 blue tiles. Write an expression to show how many total red and
    6·2 answers
  • Determine the degree of the polynomial.<br> 8a9 – 2a8 + 1
    6·1 answer
  • A volleyball player sets the ball in the air, and the height of the ball after t seconds is given in feet by h= -16^2+12t+6. A t
    9·1 answer
  • Scale factor help plz
    5·1 answer
  • Please help need this before 4:15pm
    14·1 answer
  • Solve the equation 8x= 2/3 what does x stand for
    5·2 answers
  • Someone please help me solve this. I’ve tried solving it l but my answer is always wrong
    15·1 answer
  • Simplify<br> 10+6/2+3<br> i don’t understand
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!