3 years ago

Sin2xcosx + cos2xsinx=-1/2

1 answer:

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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What is the value of x in the equation 0.2(x + 1) + 0.5x = –0.3(x – 4)?

Leokris [45]

$0.2(x + 1) + 0.5x = -0.3(x - 4)$

$0.2x+0.2+0.5x=-0.3x+1.2

 
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$0.7x+0.2=-0.3x+1.2$

$0.7x=-0.3x+1.2-0.2$

$0.7x=-0.3x+1$

$0.7x+0.3x=1$

$x=1$

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3 years ago

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Pls answer this for brainly

zimovet [89]

Answer:

Step-by-step explanation:

x-1=3

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27·2=54

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2 years ago

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Kazeer [188]

Answer:

Step-by-step explanation:

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3 years ago

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If 4 people each make a piece of dough and every 10days from each dough make 4 more; how many will there be after 20days

lisov135 [29]

There will be 16 pieces of dough

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3 years ago

Assume the annual day care cost per child is normally distributed with a mean of $9000 and a standard deviation of $1000. What

Tpy6a [65]

Answer:

65.54% (nearest hundredth)

Step-by-step explanation:

Given:

$\sf \mu=9000$

$\sf \sigma=1000$

$\sf X \sim N(\mu, \sigma^2)\implies X \sim N(9000,1000^2)$

P(X > 8600) = 1 - P(X ≤ 8600)

= 1 - 0.3445782584

= 0.6554217416

= 65.54%

3 0

2 years ago