3 years ago

PLEASE HELP!!

Mathematics

2 answers:

Crank3 years ago

4 0

I would say a or c.

Katyanochek1 [597]3 years ago

4 0

This is a geometric series, since the numbers decrease by a factor of 0.1 each time. The answer is A. 0.1

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Help fast please!! Which expression is equivalent to..

mariarad [96]

Answer:

1/8 = 2³ * 2⁻⁶

Step-by-step explanation:

2³ * 2⁻⁶ = 2³⁻⁶ = 2⁻³ = 1/2³ = 1/(2*2*2) = 1/8

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2 years ago

Whats the average cost to put wood floors in a 12 ft x 16 ft room?

Bas_tet [7]

Area in ft sq. × cost per ft sq.

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The sales tax rate in the state of New York is 8.875. If you buy a pair of shoes for 56.00, how much tax would you pay?

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Step-by-step explanation:

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3 years ago

a water faucet leaked 2 1/6 liters of water every 1/3. hour it leaked at a rate of how many liter per hour?

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3 years ago

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ln(y+1)-lny=1+3lnx . Express y in terms of x, in a form not involving logarithms. (4 marks, Maths CIE A level)

Delicious77 [7]

$remember$
$ln(x)=log_e(x)$
$and$
$log_x(a)-log_x(b)= log_x( \frac{a}{b} )$
$and$
$log_a(b)=c$ means $a^c=b$
$and$
$blog(a)=log(a^b)$

$so$

$ln(y+1)-ln(y)=1+3ln(x)$
$ln( \frac{y+1}{y} )=1+ln(x^3)$

$minus$ $ln(x^3)$ $from$ $both$ $sides$

$ln( \frac{y+1}{y}-ln(x^3) )=1$
$ln( \frac{y+1}{yx^3})=1$
$log_e( \frac{y+1}{yx^3})=1$

$translate$

$e^1=\frac{y+1}{yx^3}$
$e=\frac{y+1}{yx^3}$

$times$ $both$ $sides$ $by$ $yx^3$

$eyx^3=y+1$

$minus$ $y$ $from$ $both$ $sides$

$eyx^3-y=1$
$y(ex^3-1)=1$

$divide$ $both$ $sides$ $by$ $(ex³-1)$

$y= \frac{1}{ex^3-1}$

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3 years ago

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