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Ilya [14]
3 years ago
12

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing 100 m by their time. Is e

ach statement true or false?
Speed is a function of time.

Time is a function of distance.

Speed is a function of number of students racing.

Time is a function of speed.
Mathematics
1 answer:
vesna_86 [32]3 years ago
6 0

B.Time is a function of distance. is the answer ot the question

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing 100 m by their time. Is each statement true or false?

Speed is a function of time.

Time is a function of distance.

Speed is a function of number of students racing.

Time is a function of speed.

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Are your finances, buying habits, medical records, and phone calls really private? A real concern for many adults is that comput
Andrej [43]

Answer:

a)There is a 4.88% probability that none is concerned that employers are monitoring phone calls.

b)There is a 7.89% probability that all are concerned that employers are monitoring phone calls.

c)There is a 37.23% probability that exactly two are concerned that employers are monitoring phone calls.

Step-by-step explanation:

The binomial probability is the probability of exactly x successes on n repeated trials in an experiment which has two possible outcomes (commonly called a binomial experiment).

It is given by the following formula:

P = C_{n,x}.p^{n}.(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 a success.

In this problem, a success is being concerned that employers are monitoring phone calls.

53% of adults are concerned that employers are monitoring phone calls, so p = 0.53

(a) Out of four adults, none is concerned that employers are monitoring phone calls.

Four adults, so n = 4.

Is the probability of 0 successes, so x = 0.

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

P = C_{4,0}.(0.53)^{0}.(0.47)^{4}

P = 0.0488

There is a 4.88% probability that none is concerned that employers are monitoring phone calls.

(b) Out of four adults, all are concerned that employers are monitoring phone calls.

Four adults, so n = 4.

Is the probability of 4 successes, so x = 4.

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

P = C_{4,0}.(0.53)^{4}.(0.47)^{0}

P = 0.0789

There is a 7.89% probability that all are concerned that employers are monitoring phone calls.

(c) Out of four adults, exactly two are concerned that employers are monitoring phone calls.

Four adults, so n = 4.

Is the probability of 4 successes, so x = 2.

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

P = C_{4,2}.(0.53)^{2}.(0.47)^{2}

P = 0.3723

There is a 37.23% probability that exactly two are concerned that employers are monitoring phone calls.

3 0
3 years ago
A square has a side length of 3x3y5. What is the area of the square?​
kotykmax [81]

Answer:

9x^3 y^5

Step-by-step explanation:

Since the formula to finding area is (L*W = A), we first have to find the width.

Width: 3x^3 y^5 times 2 = 6x^3 y^5

Then we add them. So, 3x^3 y^5 + 6x^3 y^5 = 9x^3 y^5

8 0
3 years ago
Frank has four different credit cards, the balances and interest information of which are outlined in the table below. He would
Brums [2.3K]

Answer:

  c.  $467.29

Step-by-step explanation:

The total of balances is $9360. The payment can be computed using the amortization formula:

  A = P(r/12)/(1 -(1 +r/12)^-n)

where A is the monthly payment, P is the principal (total balance), r is the annual rate, and n is the number of months.

Filling in your numbers, we have ...

  A = $9360(0.18/12)/(1 -(1 +0.18/12)^-24) ≈ $467.29

Frank's monthly credit card payment will be $467.29.

6 0
3 years ago
Read 2 more answers
Christine bought 4 sandwiches and 5 bowls of soup, spending $38.50.Adam spent $47.25 to buy three sandwiches and nine bowls of s
ikadub [295]
Sandwiches are $5.25 Bowls are $3.50

4x+5y=38.50
3x+9y=47.25
4 0
3 years ago
general admission tickets to the fair cost $3.50 per person rides pass cost an additional $5 and fifty per person parking cost $
horrorfan [7]

Total people x,

then, 3.5x + 5.5x + 6 = 51

simplify, 9x +6 = 51

subtract 6 on both sides, 9x= 45

divide by 9 on both sides, x= 5

therefore, total 5 people in the family.

8 0
3 years ago
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