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Alisiya [41]
3 years ago
9

Simplify: 20 sin(2x) cos(2x)

Mathematics
1 answer:
alexandr1967 [171]3 years ago
8 0
Use the the double angle formula:
sin(2A)=2sin(A)cos(A)

substitute 2x for A, then
20sin(2x)cos(2x)=10(sin(2(2x))cos(2(2x))=10sin(4x)

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A wire is in the shape of a square of side 22 cm. If it is rebent into a circle, then find its radius.
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3 years ago
Determine whether or not the given procedure results in a binomial distribution. If not, identify which condition is not met. Su
dlinn [17]

Answer:

No, the given procedure doesn't result in a binomial distribution.

Step-by-step explanation:

We can identify if a given procedure results in binomial distribution by observing whether these four conditions are met or not.

Condition 1: Each observation should be independent, it must not depend on the result of previous observation.

Condition 2: The probability of success should stay same from trial to trial.

Condition 3: n is fixed (the number of observations)

Condition 4: There are only two outcomes success or failure.

Surveying 2828 people to determine which statistics courses they have taken.

Condition 3 is satisfied since n is fixed

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7 0
3 years ago
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Solve the absolute value equation below 3|6-4x|-4=
egoroff_w [7]

Answer:

Impossible, not enough to answer the question

Step-by-step explanation:

As you can see because there is no number or variable past the equal sign it is simply an expression, please correct me if I am wrong but even if the other side was 0, I doubt a teacher would give this problem with decimals, but it may just be me.

7 0
3 years ago
What is 3x +99 2(8*3)= 135<br> what is x equal to?
Ivenika [448]

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Step-by-step explanation: I am guessing you meant ...99  + 2(8*3)...

3x + 99 + 2(8 x 3) = 135

3x + 99 + 2(24) = 135

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3x + 147 = 135

(3x + 147) - 147 = (135) - 147

3x = -12

(3x) ÷ 3 = (-12) ÷ 3

x = -4

3 0
3 years ago
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Answer:

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3 0
3 years ago
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