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Nina [5.8K]
3 years ago
6

Estimate the square root of 40

Mathematics
1 answer:
White raven [17]3 years ago
8 0
The answer is 6.32. i hope this helps
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Your math professor gives you a set of 10 problems and tells you that the final exam will consist of a random selection of 5 of
stellarik [79]

Answer:

0.083

Step-by-step explanation:

To solve the above question, we use the combination method.

C(n, r) = nCr = n!/r!(n - r)!

Probability of answering (all 5 correctly)

= Probability of answering ( 5 out of 7 correctly)/ Probability of answering (5 out of 10 problems)

Probability of answering ( 5 out of 7 correctly) = 7C5

nCr = n!/r!(n - r)!

= 7!/5! (7 - 5)!

= 7 × 6 × 5 × 4 × 3 × 2 × 1/( 5 × 4 × 3 × 2 × 1) × (2 × 1)

= 21 ways

Probability of answering (5 out of 10 problems) = 10C5

nCr = n!/r!(n - r)!

= 10!/5! (10 - 5)!

= 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1/( 5 × 4 × 3 × 2 × 1) × (5 × 4 × 3 × 2 × 1)

= 252 ways

Probability of answering (all 5 correctly)

= 21/252

= 0.0833333333

Approximately = 0.083

5 0
3 years ago
A patrolman spends 25% every day doing paperwork. The patrolmans shift each day is 8 hours. How much time does he spend doing pa
ExtremeBDS [4]
2 hours. If you convert 25% into a fraction form, it’s 1/4. Divide 8 by 4 and you get 2.
7 0
3 years ago
A 2-column table with 6 rows. The first column is labeled x with entries negative 3, negative 2, negative 1, 0, 1, 2. The second
ikadub [295]

The largest interval of x-values where the function is increasing is (-1, 1)

<h3>How to determine the largest increasing interval?</h3>

The table of values is added as an attachment

From the table, the function f(x) decreases from x = -3 to x = -1 and x = 1 and x = 2

So, we make use of the intervals

x = -1, 0 and 1

From the table,

From x = -1 to 0, the change is 3

From x =  0 to 1, the change is 3

From x =  -1 to 1, the change is 6

Using the above highlights, the largest increasing interval is (-1, 1)

Hence, the largest interval of x-values where the function is increasing is (-1, 1)

Read more about function interval at:

brainly.com/question/1399055

#SPJ1

7 0
2 years ago
Jonas is buying fencing to surround his garden. If his garden has a perimeter of 36 feet, and fencing costs
Vesna [10]

Answer:

Step-by-step explanation:

$120

4 0
3 years ago
3. [09.04]<br> What are the exact solutions of x2 = 5x + 2? (1 point)
uranmaximum [27]

Answer:

x = \frac{5±\sqrt{33} }{2}\\

Step-by-step explanation:

I would subtract 5x and 2 on both sides to get x^2 - 5x - 2 = 0, and using the A = 0, B = -5, and C = -2 to plug it into the quadratic equation which is

\frac{-b±\sqrt{b^{2} -4ac} }{2a}

*Ignore the A please I cannot get rid of it.*

3 0
4 years ago
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