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4 years ago

Which Scenario would result in the value of zero?

Mathematics

1 answer:

garik1379 [7]4 years ago

4 0

Answer:

B) A bank withdrawal of $40 And a Deposit of $40 .

Resultant is ZERO.

Step-by-step explanation:

If equal is subtracted from equals, the resultant is ZERO.

Here,

A) Two 10 Yard gains in a football game .

It implies that total gain as +20 yard gains.

⇒ Resultant is NOT ZERO.

B) A bank withdrawal of $40 And a Deposit of $40

Total amount in bank = Total Deposit - Total Withdrawal

= $20 - $20 = 0

⇒ Resultant is ZERO.

C) A change in temperature from -7 °F to 7 °F

Total change in temperature = Initial temperature- Final Temperature

= 7 °F - (-7 °F) = 14 °F

⇒ Resultant is NOT ZERO.

D) Making $50 babysitting then spending half

It implies that total gain as + $50 in money.

⇒ Resultant is NOT ZERO.

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Question One:

Jobisdone [24]

Probability that 2 of the 10 chargers will be defective =0.35

Number of ways of selecting 10 chargers from 20 chargers is 20C10

20C10 = 184756

Number of ways of selecting 10 chargers from 20 = 184756

Number of ways of selecting 2 defective chargers from 5 defective chargers = 5C2

5C2 = 10

Since 2 defective chargers have been chosen, there remains 8 to choose

Number of ways of selecting 8 good chargers from 15 remaining chargers = 15C8

Number of ways of selecting 8 good chargers from 15 remaining chargers = 6435

Probability that 2 of the 10 will be defective =

(10x6435)/184756

Probability that 2 of the 10 will be defective = 64350/184756

Probability that 2 of the 10 chargers will be defective =0.35

Learn more on probability here: brainly.com/question/24756209

8 0

3 years ago

a(x+b)=4x+10 in the equation above a and b are constants. if the equation has infinitely many solutions for X, what is the value

xeze [42]

Answer:

$b= \frac{5}{2}$

Step-by-step explanation:

Given

$a(x+b)=4x+10\\ax+b= 4x+10\\$

Now we know that system has infinite solution for x

$\frac{a_1}{a_2}=\frac{b_1}{b_2}$

in above equation.

$a_1=a, a_2=4, b_1=ab,b_2=10\\$

∴ $\frac{a}{4}=\frac{ab}{10}\\\therefore b=\frac{10\times a}{4\times a}=\frac{5}{2}$

7 0

3 years ago

Help me out please :)

Veseljchak [2.6K]

Answer: -6 is the answer

Step-by-step explanation:

4 0

4 years ago

The Copy Shop has made 20 copies of a document for you. Since the defective rate is 0.1, you think there may be some defective c

Pepsi [2]

Answer:

Binomial

There is a 34.87% probability that you will encounter neither of the defective copies among the 10 you examine.

Step-by-step explanation:

For each copy of the document, there are only two possible outcomes. Either it is defective, or it is not. This means that we can solve this problem using the binomial probability distribution.

Binomial probability distribution:

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinatios of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem

Of the 20 copies, 2 are defective, so $p = \frac{2}{20} = 0.1$ .

What is the probability that you will encounter neither of the defective copies among the 10 you examine?

This is P(X = 0) when $n = 10$ .

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{10,0}.(0.1)^{0}.(0.9)^{10} = 0.3487$

There is a 34.87% probability that you will encounter neither of the defective copies among the 10 you examine.

8 0

4 years ago

A chord is 48 cm long and is 7 cm from the center of the circle. What is the length of the radius (r) of the circle?

ra1l [238]

Answer:

Step-by-step explanation:

4 0

3 years ago