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2 years ago

3.14(a2 + ab) when a = 4 and b = 3

Mathematics

1 answer:

vichka [17]2 years ago

8 0

Step-by-step explanation:

how does the picture fit into this question ?

I guess you mean

(a² + ab)

when a = 4 and b = 3. then we simply replace the variable names by the actual values and calculate :

4² + 4×3 = 16 + 12 = 28

now to the picture :

i am not sure what the requested result of procedure is.

so, I am just going to simplify the expression :

(log(25) - log(4)) / (log(55) - 1/2 × log(2)

remember the rules of the logarithm :

log(a) - log(b) = log(a/b)

k × log(a) = log(a^k)

a^(1/2) = sqrt(a) (the square root of a)

I assume we are using the logarithm to the base of 10.

so, we have here

log(25/4) / log(55/sqrt(2)) =

= 0.795880017... / 1.589847692... = 0.500601423...

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3 years ago

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Marizza181 [45]

Answer

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P-value $p- value = 0.0198$

Step-by-step explanation:

From the question we are told that

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The second is $sample \ size\ is\ n_2 = 11$

The second sample mean is $\= x_2 = 2.56$

The second standard deviation is $\sigma = 0.84$

The level of significance is $\alpha = 0.01$

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The alternative hypothesis is $H_a: \mu_1 - \mu_2 < 0$

Generally the test statistics is mathematically represented as

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=> $t = \frac{ (1.76 - 2.56 ) - 0 }{ \sqrt{\frac{0.55^2 }{ 5 } + \frac{0.84^2 }{11 } } }$

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Generally degree of freedom is mathematically represented as

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3 years ago

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3 years ago

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V=s^2+ 1/2sh, solve for H.

vladimir1956 [14]

V = s^2 +1/2sh
Reorder so common terms are on one side.
s^2 +(sh)/2 = v
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Divide each term by s and simplify.

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4 years ago

3.14(a2 + ab) when a = 4 and b = 3​

3.14(a2 + ab) when a = 4 and b = 3