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3 years ago

List the first three common multiples of 4 and 5.

Mathematics

1 answer:

Sindrei [870]3 years ago

8 0

Answer:

20, 40, and 60.

Step-by-step explanation:

Definition: A common multiple of two or more numbers is a number that can be divisible by each of those numbers.

Example: 10 is a common multiple of 2 and 5, because 10 can both be divisible by 2 and 5.

Question: Common Multiples of 4 and 5.

20 can be divisible by 4, and 5.

40 can be divisible by 4, and 5.

60 can be divisible by 4, and 5.

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1 year ago

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lakkis [162]

Answer:

The calculated |t| = |-26.517|=26.517 > 2.326 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

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Step-by-step explanation:

Step(i):-

Mean of the Population = 1900

Given random sample size 'n' = 45

Mean of the sample x⁻ = 1000

Standard deviation of the sample = 225

Null Hypothesis:-

There is no difference between mean savings account balance in 2013 is different from the mean savings account balance in 2012.

Alternative Hypothesis :-

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Step(ii):-

Test statistic

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

$t = \frac{1000-1900 }{\frac{225}{\sqrt{45} } }$

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|t| = |-26.517|=26.517

Degrees of freedom

γ = n-1 = 45-1 =44

t₍₀.₀₁ , ₄₄₎ = 2.326

The calculated |t| = |-26.517|=26.517 > 2.326 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

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3 years ago

What’s the correct answer for this?

zalisa [80]

Answer:

AP = 14

Step-by-step explanation:

According to secant-secant theorem

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7×12=6×AP

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AP = 14

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