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Naddika [18.5K]
3 years ago
8

The angle of depression from a helicopter to a landing pad is 65 if the horizantal distance from the helicopter to the landing p

ad is 1000ft how high up is the helicopter
Mathematics
1 answer:
MrRissso [65]3 years ago
3 0

Answer:

Approximately 679ft... I don't know exact cuz i did it in my head i used the pythagorean theorem and sin=opp/hyp to find answer Hope this helps

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grin007 [14]

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3 years ago
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9/10 divide by -3/15 as a mixed number
Ket [755]

-4 1/2 is the answer.



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Will give brainliest i rlly need help
Zepler [3.9K]

Answer:

1/6

Step-by-step explanation:

-3/4 - (-1/2) = - 1/4

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-1/4 ÷ -3/2

3 0
2 years ago
Complete parts (a) and (b) using the probability distribution below.
katen-ka-za [31]
Μ = (0×0.026) + (1×0.072) +(2×0.152) + (3×0.303) + (4×0.215) + (5×0.164) + (6×0.066) 
μ = 0 + 0.072 + 0.304 + 0.909 + 0.86 + 0.82 + 0.396
μ = 3.361 ≈ 3.4

We need the value of ∑X² to work out the variance
∑X² = (0²×0.026) + (1²×0.072) + (2²×0.152) + (3²×0.303) + (4²×0.215) + (5²×0.164) + (6²×0.066)
∑X² = 0+0.072+0.608+2.727+3.44+4.1+2.376
∑X² = 13.323

Variance = ∑X² - μ²
Variance  = 13.323 - (3.4)² = 1.763 ≈ 2

Standard Deviation = √Variance = √1.8 = 1.3416... ≈ 1.4

The correct answer related to the value of mean and standard deviation is the option D
<span>
An employee works an average of 3.4 overtime hours per week with a standard deviation of approximately 1.4 hours.</span>
7 0
3 years ago
X + 2y = 3<br> 3x - 2y = 5<br> What is the solution to the system of equations?
Oduvanchick [21]
Step 1: -3(x+2y=3)
Step 2: -3x-6y=-9
Step 3: 3x cancels out with -3x
Step 4: add 2y and -2y, and add 3 and 5
Step 5: the answer is NO SOLUTION or INFINITE SOLUTION
5 0
3 years ago
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