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irakobra [83]
3 years ago
15

A surveyor measures the angle of elevation

Mathematics
1 answer:
lisov135 [29]3 years ago
6 0

Check the picture below.

make sure your calculator is in Degree mode.

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Please please help me with this problem
Sergio [31]
A.  x < -3 \vee x \ge 2

B.  x < 6 \vee x > 14

C.  -4 \le x \le 3


6 0
3 years ago
Write the 5th term in the expansion of (5x-y/2)^7
Nezavi [6.7K]

Answer:

65625/4(x^5)(y²)

Step-by-step explanation:

Using binomial expansion

Formula: (n k) (a^k)(b ^(n-k))

Where (n k) represents n combination of k (nCk)

From the question k = 5 (i.e. 5th term)

n = 7 (power of expression)

a = 5x

b = -y/2

....................

Solving nCk

n = 7

k = 5

nCk = 7C5

= 7!/(5!2!) ------ Expand Expression

=7 * 6 * 5! /(5! * 2*1)

= 7*6/2

= 21 ------

.........................

Solving (a^k) (b^(n-k))

a = 5x

b = -y/2

k = 5

n = 7

Substituting these values in the expression

(5x)^5 * (-y/2)^(7-5)

= (3125x^5) * (-y/2)²

= 3125x^5 * y²/4

= (3125x^5)(y²)/4

------------------------------------

Multiplying the two expression above

21 * (3125x^5)(y²)/4

= 65625/4(x^5)(y²)

5 0
2 years ago
All of the following are rational except<br> Sqrt 0.49<br> Sqrt 19<br> Sqrt 900<br> Sqrt 100
Anna71 [15]

Answer:

0.49

Step-by-step explanation:

for it to be rational there should not be no decimal nor pi .

3 0
3 years ago
Read 2 more answers
Which equation is correct
BARSIC [14]
The last one, v = -2,000y + 20,000
3 0
3 years ago
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What is the scale factor from triangle ABC to triangle GHI
Len [333]

Answer:

4

Step-by-step explanation:

8 0
3 years ago
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