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Elena-2011 [213]
4 years ago
9

You are taking a quiz with 10 true-false questions. What is the probability that you will be able to choose a random answer on e

very question and get 9 or 10 correct answers?
0.00977

0.000977

0.01075

0.0002

0.002
Mathematics
1 answer:
Ilia_Sergeevich [38]4 years ago
8 0
0.002 there’s less probability you will be able to choose a random answer on every question and it be 9 out of 10 correct
You might be interested in
What fraction of 7 2/5 is 49 1/3?
Digiron [165]

Answer:

8 1/6 / 1 7/8 = 196/45 = 4 16/45 ≅ 4.3555556

Step-by-step explanation:

Conversion a mixed number 8 1/6

to a improper fraction: 8 1/6 = 8 1/6 = 8 · 6 + 1/6= 48 + 1/6 = 49/6

To find new numerator:

a) Multiply the whole number 8 by the denominator 6. Whole number 8 equally 8 * 6/6 = 48/6

b) Add the answer from previous step 48 to the numerator 1. New numerator is 48 + 1 = 49

c) Write a previous answer (new numerator 49) over the denominator 6.

Eight and one sixth is forty-nine sixths

Conversion a mixed number 1 7/8

to a improper fraction: 1 7/8 = 1 7/8 = 1 · 8 + 7/8 = 8 + 7/8= 15/8

To find new numerator:

a) Multiply the whole number 1 by the denominator 8. Whole number 1 equally 1 * 8/8 = 8/8

b) Add the answer from previous step 8 to the numerator 7. New numerator is 8 + 7 = 15

c) Write a previous answer (new numerator 15) over the denominator 8.

One and seven eighths is fifteen eighths

Divide: 49/6 : 15/8 = 49/6 · 8/15 = 49 · 8/6 · 15 = 392/90 = 2 · 196 /2 · 45 = 196/45

Dividing two fractions is the same as multiplying the first fraction by the reciprocal value of the second fraction. The first sub-step is to find the reciprocal (reverse the numerator and denominator, reciprocal of 15/

8 is 8/15

) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. In the next intermediate step , cancel by a common factor of 2 gives 196/45

.

In words - forty-nine sixths divided by fifteen eighths = one hundred ninety-six forty-fifths.

8 0
3 years ago
The hypotenuse of a right triangle is 15cm long. One of the triangle’s legs is two times the length of the other leg. Find the l
vladimir2022 [97]

Answer:

6.7cm, 13.4cm, 15cm.

Step-by-step explanation:

Let x be one side of the triangle. The question tells us the other side is 2x.

We can relate all 3 sides using the Pythagorean Theorem:

15^2=x^2+(2x)^2\\225=x^2+4x^2\\225=5x^2\\x^2=45\\x=6.7

That means the side lengths are 6.7cm and 2 x 6.7 cm = 13.4cm.

6 0
3 years ago
Read 2 more answers
What is the quotient of the fractions below?<br> 1/3 divided by 5/8
svetlana [45]
<h3>Answer:  8/15</h3>

Work Shown:

x = (1/3) divided by (5/8)

x = (1/3) * (8/5)

x = (1*8)/(3*5)

x = 8/15

4 0
3 years ago
Can somebody help me with 17 and 18 please
AveGali [126]
17. (x^2-x+3)(4x+1)
18.(x+2)(x) - (7)(3)
3 0
3 years ago
Use the rectangle below as an example
velikii [3]

Answer:

sorry man or man drawing a little more about the job than the rest on any of these

5 0
3 years ago
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