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4 years ago

Which situation CANNOT be represented by this equation?

Mathematics

1 answer:

aniked [119]4 years ago

8 0

Answer:

Step-by-step explanation:

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1. Calculate the variance of the set of data to two decimal places.

kkurt [141]

Hdjdjdhbdbehebebrhehhwywhegdjjfhf

7 0

3 years ago

Find out six rational numbers lying between -4/8 and -3/4

gregori [183]

ANSWER:

-17/32, -18/32, -19/32, -20/32, -21/32, -22/32

EXPLANATION:

-4/8 and -3/4

-4*4/8*4 and -3*8/4*8

-16/32 and -24/32

There are 8 numbers between -16/32 and -24/32. You can write any six of it.

7 0

3 years ago

Ben and Tom each take their driving test. The probability that ben and tom will pass is 0.8 and 0.7, respectively. Work out the

Wittaler [7]

Answer:

Pr(only one of them will pass the driving test) = 0.38

Step-by-step explanation:

The probability that Ben will pass = 0.8

Let Pr = pribability

Pr(Ben pass) = 0.8

Pr(Ben fail) = 1 - Pr(Ben pass) = 1-0.8

Pr(Ben fail) = 0.2

The probability that Tom will pass = 0.7

Pr (Tom pass) = 0.7

Pr (Tom fail) = 1 - Pr (Tom pass) = 1-0.7

Pr (Tom fail) = 0.3

Pr(only one pass) = Pr(Ben pass and Tom fail) + Pr (Tom pass and Ben fail)

Pr(only one pass) = (0.8 × 0.3) + (0.7 × 0.2)

Pr(only one pass) = 0.24 + 0.14

Pr(only one pass) = 0.38

3 0

3 years ago

Assume that when adults with smartphones are randomly selected, 42% use them in meetings or classes. If 5 adult smartphone use

Dmitrij [34]

Answer:

The probability that exactly 2 of 5 use their smartphones in meetings or classes is 0.3442.

Step-by-step explanation:

Let <em>X</em> = number of adults who use smartphones in meetings or classes.

The probability of the random variable <em>X</em> is, P(X) = <em>p</em> = 0.42

A sample of <em>n</em> = 5 adult smartphone users are selected.

The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> and <em>p</em>.

The probability mass function of <em>X</em> is:

$P(X=x)={n\choose x}p^{x}(1-p)^{n-x};\ x=0,1,2,3...$

Compute the value of P (X = 2) as follows:

$P(X=2)={5\choose 2}0.42^{2}(1-0.42)^{5-2}\\=10\times 0.1764\times0.195112\\=0.344177\\\approx0.3442$

Thus, the probability that exactly 2 of 5 use their smartphones in meetings or classes is 0.3442.

7 0

3 years ago

True or False: When x-coordinates are selected to create a table of values for a function, negative values of x may not be used.

svetlana [45]

$\sf \blue{True✅}$

<h3>Step-by-step explanation:</h3>

Yes, it's true sometimes we don't use negative value of 'x'.

So, we conclude it's True.

5 0

2 years ago