(a) See the attached sketch. The jet makes a right triangle with the ground with hypotenuse <em>y</em>. Since the angle of depression is 56°, and the plane in which the jet is flying 300 m in the air is parallel with the ground, the angle of elevation in the right triangle is also 56°. Use the definition of sine to solve for <em>y</em>.
sin(56°) = (300 m)/<em>y</em> → <em>y</em> = (300 m)/sin(56°)
The uppermost angle in the blue triangle has measure equal to the difference between the two given angles of depression, 56° - 30° = 26°, and the rightmost angle is also 30° by the same reasoning as before. Then by the law of sines,
<em>x</em>/sin(26°) = <em>y</em>/sin(30°) → <em>x</em> = sin(26°)/sin(30°) <em>y</em> ≈ 317.2627 m
(b) No, the field is not long enough.
We are given with
n = 1000
p = 0.78
Samples = 10
Condition = at most 7 have one or two social media accounts
We can use combinations to solve the problem
P = ∑10Ci (0.78)^i (1-0.78)^(10-i)/ 1000C10 from i from 0 to 7
Solve for P
Answer:
✧ First , I splited the given figure into three parts namely ABCD , EFGH & lastly IJKL ( See the attached picture). Now , We're gonna find out the area of these rectangles :
- Area of ▭ ABCD = Length × Breadth = 12 × 8 = 96 in²
- Area of ▭ EFGH = Length × Breadth = 13 × 4 = 52 in²
- Area of ▭ IJKL = Length × Breadth = 12 × 6 = 72 in²
♨ Now , Adding the area of ▭ ABCD , ▭ EFGH & ▭ IJKL :
☂ Total Area of the figure : 96 in² + 52 in² + 72 in² = 
☄ Hope I helped! ♡
♪ Have a wonderful day / night ! ♕
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The true statements are:
B. N⊂R
C. S⊂N
D. ∅⊂N
F. {10.11.12,...}⊆S
<h3>
Subsets and Sets</h3>
Note that:
- All real numbers are numbers that can be found on the real number line
- Natural numbers are positive whole numbers
- All natural numbers are subsets of real numbers
- The null set (∅) is a subset of every set
- A set is a proper subset of itself
Following the points highlighted above, the true statements in the given options re:
B. N⊂R
C. S⊂N
D. ∅⊂N
F. {10.11.12,...}⊆S
Learn more on subsets and sets here: brainly.com/question/13265691
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Sorry could you elaborate a bit further on the question
