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Karolina [17]
3 years ago
14

Sin2xcosx + cos2xsinx=-1/2

Mathematics
1 answer:
Gnesinka [82]3 years ago
8 0
If you know the rule,

The left side is equal to sin(3x), which is equal to -1/2

So x = (12pi*n-pi) / 18, where n is any integer.
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Classify the following triangle. Check all that apply.
Vikentia [17]

Answer:

it is an isosceles obtuse triangle.....

you can choose anyone

isosceles ( since two of its sides are equal but not the third)

or obtuse ( since one angle is more than 90)

3 0
3 years ago
How to simplify 4(2a)+7(-4b)+(3×c×5)
maw [93]
→ Solutions

⇒ Simplify <span><span><span>4<span>(<span>2a</span>)</span></span>+<span>7<span>(<span>−<span>4b</span></span>)</span></span></span>+<span><span>3c</span><span>(5)</span></span></span><span>⇒ </span><span><span><span><span><span>8a</span>+</span>−<span>28b</span></span>+<span>15<span>c

Answer
 </span></span></span></span><span>⇒ </span><span>8a−28b</span><span>+</span><span>15c</span>
5 0
3 years ago
Read 2 more answers
Billy and Sam started with the same number of baseball cards in their collections. Billy collected 3 cards per week and now has
Elina [12.6K]

Answer:

x+3y=29

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3 0
3 years ago
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Solve 23 - Q &gt;-3(2-6)
Korolek [52]

Answer:

q < 11

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5 0
3 years ago
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I need help can I have how to do it and some work so I can do it.
tiny-mole [99]

Answer:

(-1,-2) OR x = -1 and y = -2

Step-by-step explanation:

y = 3x + 1

y = -x -3

so you would first multiply everything on y = -x -3 by 3 and get 3y = -3x -9

so then you would add 3y = -3x -9 to y = 3x + 1 (<u> to eliminate the x</u> )which would be 4y = -8 then divide by 4 and get  <u><em>y = -2</em></u>

then you plug in y = -2 into any one of the equations but to make it easier i am going to plug it into y = -x -3 so now it would be -2 = -x - 3 then, add 2 to both sides which would be 0 = -x -1 then add 1 to both side 1 = -x then multiply both sides by -1 and get <u><em>x = -1</em></u>

<u><em>SO your answer would be </em></u> (-1,-2) OR x = -1 and y = -2 ( both of them are correct but it depends on what the teacher taught you)

5 0
2 years ago
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