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Zolol [24]
2 years ago
13

A true-false test has 4 questions. What is the chance of answering all questions correctly by guessing?

Mathematics
1 answer:
Stels [109]2 years ago
5 0

Answer:

Thus, in total, there are 24=16 ways to answer the four questions. Only one of these 16 sequences is correct. Assuming each of these 16 sequences is equally likely to occur (as would result from random guessing), the probability that all four questions are answered correctly is 1/16.

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Graph the system of linear equations.
balu736 [363]

Answer:

Hi, the answer should be (-4,-6)

Step-by-step explanation:

4 0
3 years ago
The price of a share of stock started the day at $37. During the day it went down $3, up $1, down $7 and up $4. What was the pri
Oksana_A [137]
It started at $37.

It went down $3.
37 - 3 = 34

It went up 1.
34 + 1 = 35

It went down 7.
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The price at the end of the day was $32.
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3 years ago
Solve (9x-4)^2=18 using the square root method
Damm [24]

Answer:

x = 4/9 + sqrt(2)/3 or x = 4/9 - sqrt(2)/3

Step-by-step explanation:

Solve for x over the real numbers:

(9 x - 4)^2 = 18

Take the square root of both sides:

9 x - 4 = 3 sqrt(2) or 9 x - 4 = -3 sqrt(2)

Add 4 to both sides:

9 x = 4 + 3 sqrt(2) or 9 x - 4 = -3 sqrt(2)

Divide both sides by 9:

x = 4/9 + sqrt(2)/3 or 9 x - 4 = -3 sqrt(2)

Add 4 to both sides:

x = 4/9 + sqrt(2)/3 or 9 x = 4 - 3 sqrt(2)

Divide both sides by 9:

Answer: x = 4/9 + sqrt(2)/3 or x = 4/9 - sqrt(2)/3

7 0
3 years ago
What is 2/3 + -1/4 = plz help lol I’m lost <br> :)
alexgriva [62]
It is 0.416. The answer
4 0
3 years ago
Read 2 more answers
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galina1969 [7]

Answer:

less than 55 minutes

Step-by-step explanation:

11 laps at 5 minutes per lap is 55 minutes.

Since she will run fewer than 11 laps, she will run less than 55 minutes.

4 0
3 years ago
Read 2 more answers
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