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Korolek [52]
3 years ago
5

Help fast pls!!!!!

Mathematics
1 answer:
AleksandrR [38]3 years ago
7 0

Answer:

Step-by-step explanation:

length of rectangle = circumference of circle = πd = 6π cm

area of rectangle = 2×6π = 12π cm

area of one circle = πr² = 9π cm²

surface area = 12π + 2(9π) = 30π ≅ 90 cm²

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How many people travel more than 30 miles to work?<br> b)?
Makovka662 [10]

Answer:

b

Step-by-step explanation:

around 500 people travel more than just 30 miles to work, sum even travel across the states

3 0
3 years ago
Which of the following approaches cannot be used to perform a two-tailed hypothesis test about μ?
Burka [1]

Answer:

Option a)  Compare the level of significance to the confidence coefficient.

Step-by-step explanation:

We are given the following information in the question:

We are performing a two-tailed test hypothesis. We can follow the following approaches:

Option a)  Compare the level of significance to the confidence coefficient.

This cannot be used to perform hypothesis.

Option b) Compare the value of the test statistic to the critical value.

If the test statistic lies in the acceptance region evaluated by the critical value, we accept the null hypothesis. If not, we reject the null hypothesis.

Option c) Compare the confidence interval estimate of μ to the hypothesized value of μ.

If the estimated population lies in the calculated confidence interval, we accept the null hypothesis otherwise, we reject the null hypothesis.

Option d) Compare the p-value to the value of α.

If the p-value is greater than the significance level, we accept the null hypothesis. If it is lower than the significance level, we reject the null hypothesis.

5 0
3 years ago
Dos niños brincan en dos trampolines. El primer niño rebota 1.5 veces más alto que el segundo. La rapidez inicial del segundo ni
luda_lava [24]

Usando un sistema de ecuaciones, se encuentra que la rapidez inicial del primer ninõ es 4.95 m/s.

-------------------------

  • Consideramos que la rapidez inicial de el primer ninõ es x, y de el segundo es y.

El primer niño rebota <u>1.5 veces más alto que el segundo</u>.

O sea:

x = 1.5y

La rapidez inicial del segundo niño es de 3.3 m/s.

Esto implica que y = 3.3

¿Cuál es la rapidez (m/s) inicial del primer niño?

x = 1.5y = 1.5(3.3) = 4.95

La rapidez inicial del primer ninõ es 4.95 m/s.

Un problema similar es dado en brainly.com/question/24646137

3 0
3 years ago
The common denominator of 3/4 and 1/6 is 24. True False
Viktor [21]
Actually, this is false. 6 and 4 both have <em>12 </em>in common because 6*2=12 and 4*3 is 12. So the least common denominator is really 12.
6 0
4 years ago
The length of a rectangle is twice the width. The area is 72 yd^2. Find the length and the width.
pochemuha

Answer:

The length is 12yd and the width is 6yd.

Step-by-step explanation:

4 0
3 years ago
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