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2 years ago

Explain the simplified form of 3abc/abc when abc doesn't equal zero?

Mathematics

1 answer:

Flura [38]2 years ago

7 0

Dividing abc, which is a*b*c, we get 3*a/a*b/b*c/c=3

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The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand

alexira [117]

Answer:

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

t = 1.076

Step-by-step explanation:

Step(i):-

Given Mean of the Population (μ) = 8.0

Mean of the sample (x⁻) = 8.25

Given data

8,9,9,8,8,9,8,7

Given sample size n= 8

Given sample standard deviation(S) = 0.661

Step(ii):-

Null hypothesis : H: (μ) = 8.0

Alternative Hypothesis :H:(μ) > 8.0

Degrees of freedom = n-1 = 8-1=7

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }$

t = 1.076

Critical value

t₍₇,₀.₀₅₎ = 2.3646

The calculated value t = 1.076 < 2.3646 at 0.05 level of significance

Null hypothesis is accepted

Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0

3 0

3 years ago

What is The equivalent fraction of 2/5

Nat2105 [25]

Answer:

4/10 is equivalent to 2/5

Step-by-step explanation:

because 4/10 is written as 0.4 in decimal form and so is 2/5, which means they are equivalent

7 0

3 years ago

Four different sets of objects contain 2,5,6 and 7 objects respectively how many unique combinations can be formed by picking on

dusya [7]

Answer:

420 unique combinations.

Step-by-step explanation:

Fundamental counting principle:

States that if there are p ways to do a thing, and q ways to do another thing, and these two things are independent, there are p*q ways to do both things.

One object from each set:

2 from one set, 5, 6 and 7 by others. Sets are independent, so, by the fundamental counting principle:

2*5*6*7 = 10*42 = 420

420 unique combinations.

4 0

3 years ago

Given that k ∥ l, identify the congruent angles in the triangles. ∠1≅ ∠2≅ ∠3≅

rewona [7]

Answer:

1.Angle 5

2.Angle 4

3.Angle 6

Step-by-step explanation:

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3 years ago

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Lightwaves travel from the air into a lens made of glass. Their velocity decreases as they enter the glass. How does this affect

Bingel [31]

Their frequency stays the same and their wavelength decreases

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