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lisov135 [29]
2 years ago
7

một máy bay đang bay ở độ cao 1700m.Từ đài quan sát người ta nhìn thấy máy bay dưới 1 góc 25° so với mặt đất.Tính khoảng cách từ

đài quan sát đến máy bay
Mathematics
1 answer:
viktelen [127]2 years ago
7 0
Dùng cos tính ra, = 1875,7m
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Help please and no links
Rashid [163]

Answer:

I cant see the question :/

Step-by-step explanation:

7 0
3 years ago
Rationalize the denominator and simplify:
raketka [301]

Answer:

A) (√3-√2)/(√3+√2)

Step-by-step explanation:

i think so

4 0
3 years ago
A set of premises and a conclusion are given. Use the valid argument forms discussed in this chapter to deduce the conclusion fr
Alex_Xolod [135]

Answer:

See deduction below

Step-by-step explanation:

I will use the known inference rules (modus ponens, etc)

From d) and b),

~r

q → r

Therefore ~q (by Modus Tollens)

From a), and our previous conclusion:

p ∨ q

~q

Therefore p (by disjunctive sillogism)

Until know, we have concluded p and ~q. By e)

~q → u ∧ s

~q  

Therefore u∧s. (Modus Ponens)

From p, u∧s, and c)

u∧s

s (simplification)

p (previous conclusion)

p∧s (adjuntion)

p∧s→t (Modus Ponens)

Therefore t, as we wanted to conclude.

4 0
2 years ago
1.9.2) If the programme started at 12:30 pm, at what time will it end?​
DerKrebs [107]

Answer:

We need to know what the program is...

Step-by-step explanation:

This question is literally unanswerable as some programs last 2 seconds and some would last thousands of years. More context as to what the program is please.

3 0
2 years ago
PLEASE HELP AND EXPLAIN! (3 different problems)
Margaret [11]

Answer:

<em>a</em><em>}</em><em>4</em><em>/</em><em>3</em>

<em>b</em><em>}</em>

<em>c</em><em>}</em><em>-</em><em>1</em><em>/</em><em>4</em>

Step-by-step explanation:

a}4-c/4-(2+b)

putting the values of b and c n its place

4-(-4)/4-(2-4)

4+4/4-(-2)

8/4+2

8/6

4/3 or 1.33

b}IDK SORRY

c} y-x+5+y/4

-1-4+5-1/4

-6+5/4

-1/4

5 0
3 years ago
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