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Alex73 [517]
4 years ago
9

Use a sum or difference identity to find an exact value cos(15 degrees)

Mathematics
1 answer:
Helga [31]4 years ago
8 0

Answer: i tried

cos(15)=1+√32√2. cos(15)=cos(45−30)

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What is -3(5+5)>5x?​
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Answer:

The answer is x < -6

hope that helps

-3(5+5)>5x

-15+-15>5x

-30>5x

5x<-30

Divide both side by 5

5x÷5 < -30÷5

x<-6

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The function y varies directly as x, and y = 81 when x = 45. What is the value of x when y = 18?
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Step-by-step explanation:

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X=10

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A casino claims that its electronic "video roulette" machine is truly random. What should that claim mean?
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(c(1) =20 <br><br>c(n) = c(n - 1) + 10<br>find the 2nd term in the sequences<br>​
Rama09 [41]

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Two friends bring lemonade to your cookout. one brings 2.7 liters and the other brings 3.54 liters. how much lemonade do they br
kozerog [31]

The total lemonade the two friends bring to the cookout when one brings 2.7 liters and the other brings 3.54 liters of lemonade is 6.24 liters of lemonade, computed using decimal addition.

The methods we use to add or subtract decimals are as follows:

  1. Vertically align the decimal points. Any necessary zeros should be entered.
  2. Treat the integers as whole numbers when adding or subtracting them.
  3. Align the decimal point with the numbers being added or subtracted so that it sits vertically above the sum or difference.

In the question, we are informed that two friends bring lemonade to the cookout. The first brings 2.7 liters and the second brings 3.54 liters.

We are asked to find the total lemonade brought by them to the cookout.

To find the total lemonade, we add both the decimal quantities following the steps discussed.

    2.7

+   3. 54

Step 1: Adding zeroes:

    2.70

+   3. 54

Step 2:  Treating them as numbers and adding:

    2.70

+   3. 54

________

    624

Step 3: Aligning decimal points:

    2.70

+   3. 54

________

    6.24

Thus, the total lemonade the two friends bring to the cookout when one brings 2.7 liters and the other brings 3.54 liters of lemonade is 6.24 liters of lemonade, computed using decimal addition.

Learn more about decimal addition and subtraction at

brainly.com/question/1528112

#SPJ4

8 0
2 years ago
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