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Minchanka [31]
2 years ago
14

Need some help please​

Mathematics
2 answers:
Dafna11 [192]2 years ago
7 0

Answer:

About what?

Step-by-step explanation:

Citrus2011 [14]2 years ago
5 0

Answer:

what help I will help yoy

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Alguien me ayuda pls
Romashka [77]

Answer:

good

Step-by-step explanation:

6 0
3 years ago
Trigonometry: If f(x)= 2sinx + cosx using exact values find f (120 degrees). if possible show steps.
Arada [10]

Answer: f(120°) = (√3) + 1/2

Step-by-step explanation:

i will solve it with notable relations, because using a calculator is cutting steps.

f(120°) = 2*sin(120°) + cos(120°)

           =2*sin(90° + 30°) + cos(90° + 30°)

here we can use the relations

cos(a + b) = cos(a)*cos(b) - sin(a)*sin(b)

sin(a + b) = cos(a)*sin(b) + cos(b)*sin(a)

then we have

f(120°) = 2*( cos(90°)*sin(30°) + cos(30°)*sin(90°)) +  cos(90°)*cos(30°) - sin(90°)*sin(30°)

and

cos(90°) = 0

sin(90°) = 1

cos(30°) = (√3)/2

sin(30°) = 1/2

We replace those values in the equation and get:

f(120°) = 2*( 0 +  (√3)/2) + 0 +  1/2 = (√3) + 1/2

3 0
3 years ago
Can you help me with this question??
Cloud [144]

Answer:

9.42

Step-by-step explanation:

6 0
3 years ago
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Find the positive integer n for which 98! x 9900 = n!
erma4kov [3.2K]

Answer:

3

Step-by-step explanation:

3 0
3 years ago
A pair of pants with a marked tag of $35.00 has a discount of 20%. How much is the discount?
melisa1 [442]
$35.00 x .20 = $7

So the discount would be $7 off of $35, for a final sale price of $28
6 0
3 years ago
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