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Anna [14]
3 years ago
15

Maria said the 4 in 400,000 has a value of 400 is maria correct explain

Mathematics
2 answers:
taurus [48]3 years ago
8 0

Answer:

No Maria is not correct.  

Step-by-step explanation:

Given : Maria said the 4 in 400,000 has a value of 400.

To find : Is maria correct? Explain.

Solution :

The place value system is

Hundred Th.   Ten Th.   Thousand     Hundred   Tens    Ones

        4               0                0                  0             0        0

The value of 4 in 400,000 4\times 100000

i.e. The value of 4 in 400,000 is 4 hundred thousand not 4 hundred.

Therefore, No Maria is not correct.

AlladinOne [14]3 years ago
5 0
No Maria is wrong because if you look at placement value you would see 4 is in the one hundred thousands place.
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81.85%

Step-by-step explanation:

Given :

The average summer temperature in Anchorage is 69°F.

The daily temperature is normally distributed with a standard deviation of 7°F .

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Solution:

Mean = \mu = 69

Standard deviation = \sigma = 7

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Now At x = 55

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z=\frac{76-69}{7}

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\boxed{ \ x \geq 1 \ } or can be written as \boxed{ \ [1, \infty) \ }

<h3>Further explanation</h3>

This is a question about the composition of functions and how to get a domain function.

Given \boxed{ \ a(x) = 3x + 1 \ } and \boxed{ \ b(x) = \sqrt{x - 4} \ }.

We will form (b o a)(x) and then determine the domain.

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\boxed{ \ (b \circ a)(x) = b(a(x)) \ }

Replace each appearance of x in b(x) with \boxed{ \ a(x) = 3x + 1 \ }.

\boxed{ \ (b \circ a)(x) = \sqrt{(3x + 1) - 4} \ }

Thus, \boxed{ \ (b \circ a)(x) = \sqrt{3x - 3} \ }

<u>Step-2</u>

To be defined, the value under the radical sign must not be negative. Therefore, the domain of (b \circ a)(x) = \sqrt{3x - 3} are processed as follows.

\boxed{ \ 3x - 3 \geq 0 \ }

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