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agasfer [191]
3 years ago
7

Which expressions are equivalent 27x/9x

Mathematics
2 answers:
uysha [10]3 years ago
6 0

Answer:

3x

Step-by-step explanation:

lbvjy [14]3 years ago
4 0

Answer:

3

Step-by-step explanation:

You have \frac{27x}{9x}

You can factor out the x in the numerator and denominator to get \frac{27}{9}

You can further simplify this by factoring out a 9 => \frac{3(9)}{(9)}

Thus getting 3

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You apply for a job and have to take a drug test. You are curious about the error rate for the test so you do some research. You
Ber [7]

Answer:

Test statistic  Z = -1.0

 |Z| = |-1.0| < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the population proportion P = 14% =0.14

Given that the sample size 'n' = 382 tests

Given that find a study where 47 out of 382 test results using this test were wrong (either a false positive or a false negative).

Sample proportion

                        p = \frac{x}{n} = \frac{47}{382} = 0.1230

Null hypothesis: H₀ : P = 0.14

Alternative Hypothesis:H₁ : P≠ 0.14

<u><em>Step(ii):-</em></u>

Test statistic

              Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }

         Z = \frac{0.1230-0.14}{\sqrt{\frac{0.14 X0.86}{382} } }

       Z = - 1.0

     |Z| = |-1.0| < 1.96 at 0.05 level of significance.

<u><em>Final answer:-</em></u>

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

               

4 0
3 years ago
Does 5(20-8)=17 the problem says which statement is true
stich3 [128]
This is false because 20-8 is 12 and 12 times 5 isnt 17
5 0
3 years ago
Read 2 more answers
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nlexa [21]
Whats The Question ????
3 0
3 years ago
Classify square root 36 A. Whole Number B. Integer C. Rational Number D. Irrational Number
aleksley [76]
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3 0
3 years ago
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A baseball field is being constructed. The builders noticed that the batters would have the sun in their eyes when batting from
Leona [35]

Answer:

A' =(-y,x)

Step-by-step explanation:

Given

Represent point A as thus;

A = (x,y)

Required

Determine the new position of A, when rotated counterclockwise

The new position will be denoted as A'

When a point is rotated counterclockwise, we start by switching the positions of x and y as follows:

Pos = (y,x)

Then, y is negated to give A'

A' =(-y,x)

5 0
3 years ago
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