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3 years ago

= ? (5 4 ⋅b −10 ) −6

Mathematics

1 answer:

Elden [556K]3 years ago

7 0

$(5^{4} *\frac{1}{b^{10} }) ^{-6}$

$(\frac{5^{4} }{b^{10} } )^{-6}$

$\frac{b^{60} }{5^{24} }$

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72/1000 as a decimal

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Answer: 0.072

Explanation: There are 3 zeros in 1000, so there must be 3 decimal digits.

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Answer:

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(6x - 8 - 2x) - (12x - 7) - (4x - 5)

The subtraction sign before the parenthesis is basically multiplying by -1, so the subtraction signs in the parenthesis have to change to addition. After that, you can remove the parenthesis.

6x - 8 - 2x - 12x + 7 - 4x + 5

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1 year ago

Emma had $2.40 to spend on seven pencils. After buying them she had $1.00. How much did each pencil cost?

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3 years ago

The average reading score on certain tests is given by y = 0.153x + 255.4, where x is the number of years past 1970. In what yea

nirvana33 [79]

Average reading score is given by the expression,

y = 0.153x + 255.4

Here, x in the number of years past 1970.

To find the year in which the average reading score is 259.378, substitute the value of 'y' in the given expression.

y = 0.153x + 255.4

259.378 = 0.153(x) + 255.4

0.153x = 259.378 - 255.4

0.153x = 3.978

x = $\frac{3.978}{0.153}$

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That means given average reading score 259.378 will be 26 years after 1970.

Therefore, 1996 is the year in which the average reading score will be 259.378.

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