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Gnom [1K]
3 years ago
8

Adding and subtracting what is the solution to x = 4 = 12

Mathematics
1 answer:
marshall27 [118]3 years ago
8 0
The answer would be 3 because 3✖️4= 12
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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
What method would best to solve x=5y. 2x-3y=7
ser-zykov [4K]

Answer:

substituting x=5y into 2x-3y=7, Answer: y = 1 x = 5

Step-by-step explanation:

2(5y)-3y=7

10y-3y=7

7y=7

y=1

substitute y=1 into x=5y

x=5(1)

x=5


8 0
3 years ago
Someone please explain
Free_Kalibri [48]

Answer:

D) 6

Step-by-step explanation:

set Q has 16 values which are all even values from 4 to 36

set Z has 11 values that are multiples of 3 from 4 to 36 (6,9,12,15,etc.) however, we have to eliminate the odd ones, leaving the following six:

6, 12, 18, 24, 30, 36

5 0
3 years ago
Read 2 more answers
What is the GCMF of x² + 2x​
natita [175]

This is about understanding GCMF.

<em><u>GCMF = x</u></em>

  • GCMF is simply an abbreviation for greatest common factor.
  • It is the highest factor that is common to 2 or more numbers or figures.

  • We want to find the GCMF of x² + 2x.
  • Let's list the factors of both;

Factors of x² = x, x

Factors of 2x = 2, x

  • The factor common to both of them is x.

Thus,

GCMF = x

Read more at; brainly.in/question/24610878

8 0
3 years ago
Oscar is having a spaghetti party for his hiking group the night before his trip. He expects 12 members. Oscar knows that a 16oz
Reil [10]
4 and a half cups of pasta for the party
4 0
3 years ago
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