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IgorC [24]
3 years ago
9

Rewrite with only sin x and cos x Cos 2x+sin x

Mathematics
1 answer:
Trava [24]3 years ago
5 0

Answer:

Cos 2x+sin x =  cos x cos x - sin x sin x + sin x

Step-by-step explanation:

Cos 2x+sin x

use Trigonometric identities.

cos (2x) = cos (x + x) = cos x cos x - sin x sin x

Cos 2x+sin x =  cos x cos x - sin x sin x + sin x

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A package of fish weighs 2.5 pounds. The price is $3.50 per pound. What is the price of this package?
Wewaii [24]

Answer:

$8.75

Step-by-step explanation:

If you do

$3.50 x 2.5 you get

$8.75

7 0
3 years ago
Find the coordinate plane that represents the solution of this system y > -x - 1 y + 4 ≤ x
gulaghasi [49]

Answer:

The graph will open to the right and will be mostly in quadrant 1

Step-by-step explanation:

8 0
2 years ago
Casey wants to buy a gym membership. One gym has a $176 joining fee and costs $29 per month. Another gym has no joining fee and
kaheart [24]

Answer:

8 months for cost to be same, cost will be $408

Step-by-step explanation:

x = months

176 + 29x = 0 + 51x

176 = 22x

8 = x

176 + (29*8) = 408

0 + (51*8) = 408

3 0
3 years ago
Help me again please <br> 2(36-4t) t= 3.4
olasank [31]
Since we know that t = 3.4 you put 3.4 where the t is.

2 (36 - 4 × 3.4) So what you do first is multiply 4 and 3.4 which gives you 13.6

2 (36 - 13.6) then you subtract 36 and 13.6 which gives you 22.4

2 (22.4) then you multiply 2 and 22.4 which is 44.8.

So your answer is 44.8

I hope that helped!
3 0
3 years ago
Simplify: 10 10−2 <br> A) 100 <br> B) 1000 <br> C) 1 102 <br> D) 1 103
Pie

Answer:

100

Step-by-step explanation:

10x10=100

7 0
2 years ago
Read 2 more answers
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