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Allisa [31]
2 years ago
13

DEFG models the shape of a pig pen on a farm. What is the perimeter of the pen?

Mathematics
1 answer:
Vanyuwa [196]2 years ago
6 0
Umm I though it was 14
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Find the area of the circle. Round your answer to the nearest hundredth.
Free_Kalibri [48]

Answer:

If pi is used as pi 113.1

or

If 3.14 is used as pi 113.04

Step-by-step explanation:

A = pi(r)²

8 0
3 years ago
A psychologist would like to examine the effect of fatigue on mental alertness. An attention test is prepared which requires sub
lianna [129]

Answer:

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

Step-by-step explanation:

We formulate null and alternate hypotheses are

H0 : u1 < u2 against Ha: u1 ≥ u 2

Where u1 is the group tested after they were awake for 24 hours.

The Significance level alpha is chosen to be ∝ = 0.05

The critical region t ≥ t (0.05, 13) = 1.77

Degrees of freedom is calculated df = υ= n1+n2- 2= 5+10-2= 13

Here the difference between the sample means is x`1- x`2= 35-24= 11

The pooled estimate for the common variance σ² is

Sp² = 1/n1+n2 -2 [ ∑ (x1i - x1`)² + ∑ (x2j - x`2)²]

= 1/13 [ 120²+360²]

Sp = 105.25

The test statistic is

t = (x`1- x` ) /. Sp √1/n1 + 1/n2

t=   11/ 105.25 √1/5+ 1/10

t=  11/57.65

t= 0.1908

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

5 0
3 years ago
The city has a section of land that is 3,694.7 feet long. The city wants to partition this lengths to form 10 equal-sized garden
Soloha48 [4]

Answer:

  369.47 ft

Step-by-step explanation:

Each plot is 1/10 of the total length, so has length ...

  (3694.7 ft)/10 = 369.47 ft

5 0
3 years ago
The circumference of the bike tire above is 83.524 inches. What is the radius of the bike tire?
dezoksy [38]
Divide 83.524 by pi then take half of that answer .
the answer should be 13.29 or 13.3
3 0
3 years ago
Company A: A 2-column table with 5 rows. The first column is labeled hours with entries 5, 12, 20, 29, 42. The second column is
Gnom [1K]

Answer:

86 & tends to increase

Step-by-step explanation:

Goodluck :)

3 0
2 years ago
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