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Tatiana [17]
3 years ago
9

What is the value of sin(80°)cos⁡(20°)-cos(80°)sin(20°)

Mathematics
1 answer:
Iteru [2.4K]3 years ago
5 0

Answer: sqrt 3 / 2

Step-by-step explanation: cos20°sin80°-cos80°sin20° is about 0.66 and sqrt(3)/2 is about 0.66.

Please mark as brainliest if my answer was correct and/or helpful.

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Evaluate <br> H(t)=-20+11t<br> H(11)=
damaskus [11]

Answer:

H(11)=101

Step-by-step explanation:

The function we have is:

H(t)=-20+11t

and we need to find the value of

H(11)

this is evaluating the function H(t) when the value of t is t=11

So, first we substitute t=11 in H(t):

H(11)=-20+11(11)

we solve the expression:

H(11)=-20+121\\H(11)=101

the answer is that when t=11, the function has the value H(11)=101

4 0
3 years ago
Read 2 more answers
81 apartments on 3 floors=? <br> apartments per floor
just olya [345]

Answer:

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Step-by-step explanation:

Just divide 81 by 3

6 0
3 years ago
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For some reason it says square but please help! I need to know step by step what to do.
quester [9]

Answer:

8.06 inches

Step-by-step explanation:

The diagram shows a rectangle with width of 4 inches and area of 28 square inches.

Use area formula:

A_{\text{rectangle}}=\text{Width}\times \text{Length}

So,

28=4\times \text{Length}\Rightarrow \text{Length}=\dfrac{28}{4}=7\ \text{inches}

By the Pythagorean theorem,

\text{Diagonal}^2=\text{Width}^2+\text{Length}^2\\ \\\text{Diagonal}^2=4^2+7^2\\ \\\text{Diagonal}^2=16+49\\ \\\text{Diagonal}^2=65\\ \\\text{Diagonal}=\sqrt{65}\approx 8.06\ \text{inches}

7 0
3 years ago
Cynthia invests some money in a bank which pays
USPshnik [31]

Let ,Cynthia invested $x

Rate = 5%per year

time = 3 year

Amount

A= P(1+r/100)^t

8000=x(1+5/100)^3

8000=x(21/20)^3

x= (8000x8000)/9261

x=6910.7$

Therefore she can invest =$6910.7 =5322.14 pound  

4 0
3 years ago
Order from least to greatest 0.5 0.41 3/5
FinnZ [79.3K]
Least. 0.41, 0.5, 3/5 Greatest
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4 years ago
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