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krok68 [10]
3 years ago
5

Help me please.No spammmers.

Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0

Answer:

C

Step-by-step explanation:

cot =cos/sin =a/b

cos=a/b*sin

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

=(1-a/b)/(a+a/b)

=(b-a)/(a+b)

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Calculate the annual return percentage
const2013 [10]
The annual returns will be calculated as follows:
a] Here we use the formula:
A=p(1+r/100)^n
A=future amount
p=principle
r=returns
n=time
We are given:
A=500, p=400, t=1
Plugging the values in the formula we obtain:
500=400(1+r)^1
simplifying and solving for r:
1.25=1+r
thus
r=1.25-1
r=0.25~25%

b] Using the formula above:
A=p(1+r/100)^n
A=2500+100=2600, p=2000, n=1 year
plugging the values in the equation we obtain:
2600=2000(1+r)^1
simplifying and solving for r we obtain:
2600/2000=1+r
1.3=1+r
hence
r=1.3-1
r=0.3~30%

7 0
3 years ago
Please help it’s timed !!!! 80 points!!!!
Irina18 [472]

Answer:

The answer to your question is the letter a) √3/3

Step-by-step explanation:

Data

find tan 30°

Use the triangle 30°-60°-90°  (see the picture below)

Tangent is the trigonometric function that relates the Opposite side and the adjacent side.

                     tan Ф = Opposite side / Adjacent side

-Substitution

                    tan Ф = 1/√3  

            or     1/√3  √3/√3 = √3/3

3 0
3 years ago
Read 2 more answers
B) A monthly service fee to download e-books is $4.95, plus $3.99 per book downloaded. Write an
pickupchik [31]

Answer:

$4.95 + $3.99b = c

I can't make a graph but start at 4.95 on the graph and move up 3.99 every time you go to the right once

7 0
3 years ago
Round 9.50 to the nearest whole number
vova2212 [387]
It would be 10 bc ten is the next number i guess
7 0
2 years ago
Read 2 more answers
- 4 + 4b + 5 + 8b<br><br><br> It’s needs to be simplified <br> I need an answer asap
leva [86]

Answer:

12b+1

Step-by-step explanation:

-4 + 4b + 5 + 8b

12b+1

5 0
3 years ago
Read 2 more answers
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