Ask question

Ask question

All categories

3 years ago

7

A square table is to be covered with small square ceramic tiles. The table has an area of 4 square feet.how many tiles are neede

d if each tile measures 3 inches on one side?

1 answer:

timurjin [86]3 years ago

7 0

Step-by-step explanation:

1 foot x3 is 36, and 36 divided by 4 is 9. 9 is your answer

:)

You might be interested in

What’s the interger of -(-10)

Lorico [155]

Answer:

10

Step-by-step explanation:

<u>A negative number with another negative sign is practically a positive number. </u>

Example: -(-4)

-(-4)

-1 * -4

4

Question: -(-10)

-(-10)

-1 * -10

<em>10 </em>

Answer: 10

7 0

3 years ago

A park bench is 2½ yards long and ⅓ yard deep. How many square yards is its sitting area?

Elan Coil [88]

Answer: 1.4259

Explanation: Square 2 1/2 comes up with 6 1/4 then square root that then multiply by 1/3

7 0

3 years ago

A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed, t

xxMikexx [17]

If we let
x as the distance traveled by the boat
y as the distance between the boat and the lighthouse.

Then, we have:
tan 18°33' = 200 / (x + y)
and
tan 51°33' = 200 / y

Solving for y in the second equation:
y = 200 / tan 51°33'

Rearranging the first equation and substituting y
x = 200 / tan 18°33' - 200 / tan 55°33'
x = 458.81 ft

Therefore, the boat traveled 458.81 ft before it stopped.

5 0

3 years ago

Read 2 more answers

Many four-door cars are about 15 feet long.how many of these cars would you have to line up to equal the length of a megaloden.i

Mamont248 [21]

60/15 cars, 4 cars Hope this helped!!! :)

4 0

3 years ago

A candidate for a US Representative seat from Indiana hires a polling firm to gauge her percentage of support among voters in he

mojhsa [17]

Answer:

(A) The minimum sample size required achieve the margin of error of 0.04 is 601.

(B) The minimum sample size required achieve a margin of error of 0.02 is 2401.

Step-by-step explanation:

Let us assume that the percentage of support for the candidate, among voters in her district, is 50%.

(A)

The margin of error, <em>MOE</em> = 0.04.

The formula for margin of error is:

$MOE=z_{\alpha /2}\sqrt{\frac{p(1-p)}{n}}$

The critical value of <em>z</em> for 95% confidence interval is: $z_{\alpha/2}=1.96$

Compute the minimum sample size required as follows:

$MOE=z_{\alpha /2}\sqrt{\frac{p(1-p)}{n}}\\0.04=1.96\times \sqrt{\frac{0.50(1-0.50)}{n}}\\(\frac{0.04}{1.96})^{2} =\frac{0.50(1-0.50)}{n}\\n=600.25\approx 601$

Thus, the minimum sample size required achieve the margin of error of 0.04 is 601.

(B)

The margin of error, <em>MOE</em> = 0.02.

The formula for margin of error is:

$MOE=z_{\alpha /2}\sqrt{\frac{p(1-p)}{n}}$

The critical value of <em>z</em> for 95% confidence interval is: $z_{\alpha/2}=1.96$

Compute the minimum sample size required as follows:

$MOE=z_{\alpha /2}\sqrt{\frac{p(1-p)}{n}}\\0.02=1.96\times \sqrt{\frac{0.50(1-0.50)}{n}}\\(\frac{0.02}{1.96})^{2} =\frac{0.50(1-0.50)}{n}\\n=2401.00\approx 2401$

Thus, the minimum sample size required achieve a margin of error of 0.02 is 2401.

8 0

3 years ago