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3 years ago

What is meant by the term observed frequencies (O)?

Mathematics

1 answer:

cestrela7 [59]3 years ago

4 0

Answer:

The term observed frequencies are found in the sample.

Hence, option 'd' is correct.

Step-by-step explanation:

Unlike the expected frequency which is obtained based on prediction, the observed frequency is the actual frequency that is determined from the experiment.

Therefore, we conclude that

The term observed frequencies are found in the sample.

Hence, option 'd' is correct.

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This is less than and more than questions

valentinak56 [21]

Hmm... interesting thought.

6 0

4 years ago

Which graph represents this equation y-4= -3(x+5)

Kipish [7]

Answer:

Graph B

Step-by-step explanation:

Simplify.

y - 4 = -3x - 15 Distribute

y = -3x - 11 Add 4 on both sides

The y-intercept should be negative, and option B has a negative y-intercept.

6 0

4 years ago

Which number is irrational?<br><br> A.0.3 B. C.0.777... D.0.454545…

Savatey [412]

Each of A, C, and D are rational, so presumably B is the answer here.

A is rational, since $10\times0.3=3$ , so $0.3=\dfrac3{10}$ .

C is also rational. If $x=0.777\ldots$ , then $10x=7.777\ldots$ . This would mean $10x-x=9x=7$ , and so $x=\dfrac79$ .

D is rational by a similar argument. If $x=0.4545\ldots$ , then $100x=45.4545\ldots$ . So, $100x-x=99x=45$ , which means $x=\dfrac{45}{99}=\dfrac5{11}$ .

6 0

3 years ago

For questions 7 - 12, solve the problem, expressing your answer using the correct number of

navik [9.2K]

Answer:

93.1

24.83

24.13

2755

12.75

0.151

Step-by-step explanation:

Given :

21.1 + 45.99 + 26.0 = 93.09

15.55 + 21.61 - 12.333 = 24.827

14 + 0.8 + 9.33 = 24.13

14.5 * 190 = 2755

5.1 * 2.5 = 12.75

0.15 ÷ 0.991 = 0.151

6 0

3 years ago

A bike rental is $20 for a day and $3 for an hour. Caroline rented a bike for 2 days and 2 hours. Write and equation you could u

wolverine [178]

Answer:

M = 20(2) + 3(2) = $46

Step-by-step explanation:

Here, we want to write an equation that could be used to find the amount of money spent

The rental charges $20 for a day and $3 for an hour

For 2 days, amount is 2 * 20 = $40

for 2 hours , amount is 3 * 2 = $6 hours

The amount Spent M will be;

M = 20(2) + 3(2) = $46

8 0

3 years ago