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3 years ago

The distance between the front wheels of a model car is 4.5 centimeters. What is the actual distance on the car if the scale is

Mathematics

1 answer:

Kamila [148]3 years ago

3 0

Answer:

108

Steps:

24 x 4.5 = 108

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sThe number of users on a social networking site was 45 thousand in February when theyofficially went public, and grew to 60 tho

svetoff [14.1K]

Given:

No of users in February is 45,000 and in october its 60,000.

$P=45000(\frac{4}{3})^{(\frac{3}{2})^t}$

t=2

$P=45000(\frac{4}{3})^3$ $P=45000(\frac{64}{27})$ $P=5000(\frac{64}{3})$ $P=106666.6667$

Therefore, approximate no of users after 2 years is 106667.

6 0

1 year ago

Find the perimeter and area of rectangle ABCD.

iragen [17]

Area = Length X Width
Perimeter = l(2) x W(2)
what are the measures of this rectangle?

3 0

3 years ago

A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only

Nadusha1986 [10]

Answer:

The sample size required is, n = 502.

Step-by-step explanation:

The (1 - α)% confidence interval for population proportion is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p\cdot (1-\hat p)}{n}}$

The margin of error is:

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

Assume that 50% of the people would support this political candidate.

The margin of error is, MOE = 0.05.

The critical value of z for 97.5% confidence level is:

z = 2.24

Compute the sample size as follows:

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

$n=[\frac{z_{\alpha/2}\times \sqrt{\hat p(1-\hat p)}}{MOE}]^{2}$

$=[\frac{2.24\times \sqrt{0.50(1-0.50)}}{0.05}]^{2}\\\\=501.76\\\\\approx 502$

Thus, the sample size required is, n = 502.

4 0

3 years ago

Olga has a drawer of socks with 4 red pairs, 2 gray pairs, and 8 black pairs. She also has a

Korvikt [17]

Answer:

2/7, 1/10, 2/15

Step-by-step explanation:

hope this helps!!

7 0

3 years ago

In the diagram, AC=BD=17 and BC=3. The length of segment AD is

Anastaziya [24]

The length of ad would also have to be the three also. This is logically because ac and bd would be the two going across making them equal. This meaning to connect the lines together if they were parallel bc and ad lengths would be equivalent.

7 0

3 years ago