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nekit [7.7K]
3 years ago
7

Write an equation for the following tile pattern. Figure 2 Figure 3 Figure 4

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
3 0

Answer:

The general equation following the pattern becomes is 7 + (n - 1)×2

Where, n = The figure number - 1

Step-by-step explanation:

The pattern in the question can be described as follows;

Figure 2 = (5 + 2) squares boxes = 7 squares boxes

Figure 3 = (5 + 2 + 2) squares boxes

Figure 4 = (5 + 2 + 2 + 2) squares boxes

Therefore, the number of squares boxes per figure, form an arithmetic progression (a + (n - 1)d) with the first term a = 7, the common difference d = 2, and the n = the nth term of the series, such that the general equation following the pattern becomes;

7 + (n - 1)×2.

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An ornithologist has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders.
Marianna [84]

Answer:

the x² test statistic 13.71

Option a) 13.71 is the correct answer.

Step-by-step explanation:

Given the data in the question;

Feeder                     1      2      3       4

Observed visits; o_i  60   90   92    58

data sample = 300

Expected e_i = 300 / 4 = 75

the x² test statistic = ?

X^2_{stat = ∑[ (o_i - e_i)²/e_i]

X^2_{stat = [ (60 - 75)² / 75 ] + [ (90 - 75)² / 75 ] + [ (92 - 75)² / 75 ] + [ (58 - 75)² / 75 ]

X^2_{stat = [ 3 ] + [ 3 ] + [ 3.8533 ] + [ 3.8533 ]

X^2_{stat = 13.7066 ≈ 13.71

Therefore, the x² test statistic 13.71

Option a) 13.71 is the correct answer.

7 0
2 years ago
Jackson eats 3/4 cup of food in the morning and 3/4 cup of food at night. How many cups of food does Jackson eat in 5 days
Sonja [21]

Answer:

Jackson eats 15/2 cups of food in 5 days.

Step-by-step explanation:

If Jackson eats 3/4 of food in the morning and at night then he eats 3/2 of food a day or 1.5 cups of food a day.

1.5*5 = 7.5

OR

3/2*5=15/2

Hope this helps!!

5 0
2 years ago
Read 2 more answers
I need help with this pls
shtirl [24]

Answer:5

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Carrie is searching online for airline tickets to weeks ago the cost to fly from Hartford to Boston was 210 now the cost is $350
padilas [110]

Answer:

It is a 40% increase

Step-by-step explanation:

So first of all the formula is

New-old/old

Or rate of change/ original

SO th new is 350

THe old is 210

350-210=140

140/350 which is old is 2/5

2/5 is 40 percent

So 40 percent increase

4 0
3 years ago
Read 2 more answers
8x(40+7)=(8x )+(8x7 what is the missing number
Hitman42 [59]
Well since the first expression says 8x(40+7) the answer would be 40 that is missing

Since your splitting 47 into 40 and 7 and multiplying both of them by 8 the answer would be 40
6 0
3 years ago
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