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Temka [501]
3 years ago
11

The widths of two similar rectangles are 10 m and 15 m. What is the ratio of the perimeters? Of the areas?

Mathematics
1 answer:
vitfil [10]3 years ago
6 0
Area and perimeter are in the ratio of 1:3. but if u mean to ask about the ratio of perimeters & areas of both triangles. the answer would be 1:1
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The difference between a number c and 13 is −2. <br><br> Equation: <br><br> Solution:
Taya2010 [7]

Answer:

c - 13 = - 2

grouping of like terms

c = -2 + 13

c = 11

4 0
3 years ago
Read 2 more answers
You work for a marketing firm that has a large client in the automobile industry. You have been asked to estimate the proportion
quester [9]

Answer:

The sample size must be approximately 1067 to get a margin of error of 0.03.

Step-by-step explanation:

We are given the following in the question:

Margin of error = 0.03

Significance level = 5%

Margin of error =

z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

Since, no prior proportions are given, we take

\hat{p} = 0.5

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get,

0.03 = 1.96\sqrt{\dfrac{0.5(1-0.5)}{n}}\\\\\sqrt{n} = \dfrac{1.96\times 0.5}{0.03}\\\\\\sqrt{n} = 32.67\\n = 1067.3289\approx 1067

Thus, the sample size must be approximately 1067 to get a margin of error of 0.03.

3 0
3 years ago
The average amount of time it takes Greg to mow x lawns can be defined by the expression 28x + 5. In this scenario, what does th
inna [77]

Answer:

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6 0
3 years ago
Explain why the function is discontinuous at the given number
Novosadov [1.4K]

Answer:

  left limit = 2 ≠ 1/2 = right limit

Step-by-step explanation:

A function is discontinuous if the limit of the function value approaching the point from the left is different than the limit approaching from the right.

Here, the left limit is 2 and the right limit is 1/2. The limits are different, which is why the function is discontinuous at x=-1.

7 0
3 years ago
Find the circumference of a circle rounded to the nearest tenth with a<br> diameter of 4 inches
k0ka [10]

Answer:

12.6

Step-by-step explanation:

Circumference is πd. So...

(3.14*4)

12.56

12.6

Hope this helps and have a nice day ~(^_^)~

8 0
3 years ago
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