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3 years ago

A heartbeat takes 0.8 seconds.How many sec is his written as a faction?

2 answers:

8 0

Because 8 is in the tenths place, we can write it as 8/10.

8/10 simplifies to 4/5 (divide numerator and denominator by 2)

Final answer: 4/5 seconds

Arisa [49]3 years ago

6 0

0.8sec=0.8/1sec=8/10sec=4/5sec

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allsm [11]

Answer:

yes

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4.72

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Step-by-step explanation:

6 0

2 years ago

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 $a^c=b$
$and$
$blog(a)=log(a^b)$

$so$

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

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

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

$translate$

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

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

$eyx^3=y+1$

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

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

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

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

6 0

3 years ago

Read 2 more answers

What is the answer????

Monica [59]

Answer:

Step-by-step explanation:

To find the breadth use Pythagorean theorem

Breadth² = diagonal² - length²

= 34² - 30²

= 1156 - 900

= 256

Breadth = √256 = 16 cm

Breadth = 16 cm

Perimeter = 2*(length + breadth) = 2*(30 + 16) = 2*46 = 92 cm

Area = length * breadth = 30 *16 = 480 cm²

3 0

2 years ago

Read 2 more answers

What is the standard form for the quadratic function?<br>f(x) = (x – 3)2 + 5

Minchanka [31]

Answer:

f(x) = x² - 6x + 14

Step-by-step explanation:

Standard form is ax² + bx + c = 0 or f(x) = ax² + bx + c

So we are going to expand the equation and combine like terms:

f(x) = (x - 3)² + 5

f(x) = x² - 3x - 3x + 9 + 5

f(x) = x² - 6x + 9 + 5

f(x) = x² - 6x + 14

7 0

2 years ago

A pet store has two kittens.One kitten weighs 15/16 pound.The other kitten weighs 12/16 pound.What is the difference between the

Lunna [17]

The difference between two kitties are 3/16.

8 0

3 years ago

Read 2 more answers