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SashulF [63]
2 years ago
14

Evaluate 12 divided by (-3)(2) + 5. a) -13 b) 3 c) -3

Mathematics
1 answer:
svlad2 [7]2 years ago
3 0

Answer:

B

Step-by-step explanation:

12 divided by -6 is -2, plus 5 is 3

:D

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Help me guys for 7 8 10 and 11 please
mixas84 [53]
I believe #7 would be 5:13, #8 to be 6:7, #9 to be 13:18, #10 to be 18:5.
I hope this helps.
8 0
3 years ago
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Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d
Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

n = 320 --- the sample size

\sigma = 2.9 --- the standard deviation

\bar x = 24 --- the mean

\alpha = 90\% --- the confidence level.

The margin of error (E) is calculated as follows:

E = z \times \sqrt{\frac{\sigma^2}{n}}

So, we have:

E = z \times \sqrt{\frac{3.2^2}{320}}

E = z \times \sqrt{\frac{10.24}{320}}

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

E = 1.645 \times \sqrt{\frac{10.24}{320}}

E = 1.645 \times \sqrt{0.032}

Take square roots

E = 1.645 \times 0.1789

Multiply

E = 0.2943

Approximate

E = 0.29

Hence, the margin of error is 0.29

Read more about margin of error at:

brainly.com/question/14396648

5 0
2 years ago
Read 2 more answers
HELP PLEASE!!!
fomenos
1 it’s the most educated guess.
6 0
2 years ago
Find the exact value of the following.<br><br> -3(1.2) 2 =
Shkiper50 [21]

Answer:

-7.2

Step-by-step explanation:

-3 (1.2) 2= -3×1.2×2

-3×1.2×2

-3.6×2

-7.2

-3 (1.2) 2= -7.2

3 0
3 years ago
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3. Given: Circle Q<br>&lt;A = 35<br>Find: m AB​
Agata [3.3K]

Answer:  110°

<u>Step-by-step explanation:</u>

∠A ≅ ∠B  

since ∠A = 35° (given), then ∠B = 35°

Use the Triangle Sum Theorem to find ∠C:

∠A + ∠B + ∠Q = 180°

35° + 35° + ∠Q = 180°

     70°    + ∠Q = 180°

                 ∠Q = 110°

The central angle (∠AQB) ≅ arc AB

since ∠AQB = 110° (solved above), then arc AB = 110°

5 0
2 years ago
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