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Nimfa-mama [501]
3 years ago
10

Write the expression as either the sine, cosine, or tangent of a single angle.

Mathematics
1 answer:
Gnesinka [82]3 years ago
6 0
Note that
sin(x + y) = sin(x) cos(y) + cos(x) sin(y).

Therefore by setting x = π/2 and y = π/7, obtain
sin(π/2 + π/7) = sin(π/2)*cos(π/7) + cos(π/2)*sin(π/7)

The right side is what we want to evaluate.  It is equal to
sin(π/2 + π/7) = sin (9/14)π

Answer:  sin( \frac{9 \pi }{14})
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Mandarinka [93]
Factor the denominator
x^2+3x-10
(x+5)(x-2)

(x-2)/((x+5)(x-2))

The x-2 in the numerator and denominator cancel out.

Final answer: x+5
5 0
4 years ago
A package weighs P pounds P being a whole number. to ship this package by express costs one dollar and sixty five cents for the
deff fn [24]
Whole package weighs 20pounds

1.65 = 5pounds
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3.45 - 1.65 = 1.80 : 0.12 = 15pounds
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5 0
3 years ago
First correct answer gets brainliest, answer correctly please and thank you.
solniwko [45]

Answer:

to have 100% of something it means to have it all. So if I eat 100% of a burrito i ate all of it because 100% means all. I am actually listening to playlist so if i listen to 100% of the playlist with over 70 songs i listened to all of them.

The amount of time to complete the project was 320% of 5 hours the original time. when this is estimated it is 300%

Step-by-step explanation:

5 0
3 years ago
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Anna71 [15]

Answer:

x=10

Step-by-step explanation:

  1. let the first number be x

second number be x+1

third number be x+2.

2. 3(x+x+1)=5(x+2)+3

= 3x+3x+3=5x+10+3

=6x+3=5x+13

=6x-5x=13-3

=x=10

6 0
4 years ago
The student council is planning an activity night to raise money. The student council will charge $5 per student to attend the a
sineoko [7]

Answer:

5n

Step-by-step explanation:

They are charging 5 dollars per person and n is the number of students.  You would multiply 5 by n (the number of students) to see how much money they raised.

7 0
3 years ago
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