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Yanka [14]
3 years ago
7

Simplify the expression sin 2x+ sin x + cos2x - 1.

Mathematics
1 answer:
dezoksy [38]3 years ago
7 0

Answer:

Sin(2x)+sin(x)+cos(2x)-1

Step-by-step explanation:

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First you would do $325.49 divided by 20 and you would get $16.27. so you would need $16.27 a week.
4 0
2 years ago
Solve for x. Help me out because I haven’t been paying attention all year
svet-max [94.6K]

Answer:

x = 18

Step-by-step explanation:

(whole secant) x (external part) =  (whole secant) x (external part)

(6+x)6 = (8+10)* 8

6*(6+x) = 8(18)

Divide each side by 6

6+x = 8(18)/6

6+x = 8*3

6+x = 24

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6+x-6 =24-6

x = 18

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2 years ago
Tommy finished 3/5 of the race in 6 hour. how long was the entire race?
lesya692 [45]

Hello there,

Well to find the total time you would have to set up a proportion...

6 / 3/5 = x / 1

Now you crosss multiply and divide...

6 * 1 = 6

6 / 3/5 =30/3 = 10


Answer: 10 hours


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7 0
2 years ago
ANSWER FAST PLZ 33 POINTS!!!!!!!!!!!!!!!!!!
vlada-n [284]

Answer:

it is 706.5 in sq

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
In 2007, there were more than 8.14 million cars for sale. Over the next 3 years, the number of cars decreased by 23%. Write an e
Nina [5.8K]

Answer:

c = 8.14 million×(0.9166)^t

4.83 million  

Step-by-step explanation:

Data:

  t = y - 2007

c₀ = 8.14 million

c₃  = 23 % less than c₁

Part 1. Calculate c₃

c₃ = c₀(1 - 0.23) = 0.77c₀

Part 2. Calculate r

      c₃ = c₀r^t

0.77c₀ = c₀r³

   0.77 = r³              Divided each side by c₀

         r = 0.9166     Took the cube root of each side

The explicit decay model is c = 8.14 million×(0.9166)^t

Part 3. Prediction

t = 2013 - 2007 = 6

c = c₀r^t = 8.14 million×(0.9166)⁶ = 8.14 million × 0.5929 = 4.83 million

The model predicts that there will be 4.83 million cars for sale in 2013.

7 0
2 years ago
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