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3 years ago

A heart beat takes 0.8 second ,how many seconds is this writtin as a fraction

Mathematics

2 answers:

NeX [460]3 years ago

5 0

The answer to your Question is 8/10 but if you simplify it the answer is 4/5.

alina1380 [7]3 years ago

5 0

Answer:

$\frac{4}{5}$ seconds.

Step-by-step explanation:

We have been given that hear beat takes 0.8 second.

We have to convert it in fraction form

We can write 0.8 in fraction as

$\frac{0.8}{1}$

Multiply numerator and denominator by 10

$\frac{0.8\times10}{1\times10}$

On simplifying,

$\frac{8}{10}$

Write in simplest form

$\frac{4}{5}$

Therefore, the heart takes $\frac{4}{5}$ seconds.

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Of 5

aniked [119]

Answer:

Krutika

Step-by-step explanation:

Lets convert each person's typing rate to words/min.

Krutika:

80 minutes = 6000 words

1 minute = (6000/80) words

= 75 words

Typing Rate: 75 words / min

Mark:

60 minutes = 4200 words

1 minute = (4200/60) words

= 70 words

Typing Rate: 70 words / min

David:

90 minutes = 5850 words

1 minute = (5850/90) words

= 65 words

Typing Rate: 65 words / min

From the above, we can see Krutika has the fastest rate of words per minute.

3 0

2 years ago

Find the value of x in each figure <br><br>

Ronch [10]

Answer:

X is 50

Step-by-step explanation:

3 0

3 years ago

WAIT UNTIL YOU SEE THE PICTURE HELPP WITH #5

Natalka [10]

You would do (2x+60)+6x=180... when you simplify you get 15.

6 0

3 years ago

The number of failures of a testing instrument from contamination particles on the product is a Poisson random variable with a m

Mazyrski [523]

Answer:

The probability that the instrument does not fail in an 8-hour shift is $P(X=0) \approx 0.8659$

The probability of at least 1 failure in a 24-hour day is $P(X\geq 1 )\approx 0.3508$

Step-by-step explanation:

The probability distribution of a Poisson random variable X representing the number of successes occurring in a given time interval or a specified region of space is given by the formula:

$P(X)=\frac{e^{-\mu}\mu^x}{x!}$

Let X be the number of failures of a testing instrument.

We know that the mean $\mu = 0.018$ failures per hour.

(a) To find the probability that the instrument does not fail in an 8-hour shift, you need to:

For an 8-hour shift, the mean is $\mu=8\cdot 0.018=0.144$

$P(X=0)=\frac{e^{-0.144}0.144^0}{0!}\\\\P(X=0) \approx 0.8659$

(b) To find the probability of at least 1 failure in a 24-hour day, you need to:

For a 24-hour day, the mean is $\mu=24\cdot 0.018=0.432$

$P(X\geq 1 )=1-P(X=0)\\\\P(X\geq 1 )=1-\frac{e^{-0.432}0.432^0}{0!}\\\\P(X\geq 1 )\approx 0.3508$

3 0

3 years ago

What is the result of substituting for yin the bottom equation? y=x+3 y= x^2 + 2x - 4

marta [7]

Answer:

x +3 = x^2 +2x -4

Step-by-step explanation:

Straight substitution of the top expression for y gives you ...

x +3 = x^2 +2x -4

This lets you rewrite the equation to standard form as ...

x^2 +x -7 = 0

and find the solutions to be ...

x = (-1±√29)/2

Corresponding y-values will be 3 more than this:

y = (5±√29)/2

4 0

3 years ago