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Anton [14]
3 years ago
8

What equation has the value as -10-(-7)

Mathematics
1 answer:
LiRa [457]3 years ago
4 0
X=-3

-10 minus -7 = x
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If sin ⁡x=7/25, and 0 < x < π/2, what is cos⁡(x−3π/2)?
Likurg_2 [28]

Answer:

Cos(x-\frac{3\pi}{2})=-\frac{7}{25}

Step-by-step explanation:

Remember that cos(x-y)=cos(x)cos(y)+sin(x)sin(y)

Then,

cos(x-\frac{3\pi}{2})=cos(x)cos(\frac{3\pi}{2})+sin(x)sin(\frac{3\pi}{2})\\

But cos(\frac{3\pi}{2})=0 and sin(x)=\frac{7}{25}

Then

cos(x-\frac{3\pi}{2})=cos(x)*0+\frac{7}{25}*sin(\frac{3\pi}{2})\\=\frac{7}{25}*(-1)=\frac{-7}{25}

5 0
3 years ago
I need help this is due tomorrow
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Answer:

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Step-by-step explanation:

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3 years ago
What is 60% of 50?<br><br> coins
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Answer:

30

Step-by-step explanation:

do 50 divided by 10 wich is 5 so ever 5 is 10 percent so the do 5 times 6 to get 30!

7 0
2 years ago
Unit 3 quiz 3-2 questions 8-10 write an equation on the line graphed HELP ASAP DUE IN 1 hour please help will give Brainlyist
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Answer:

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Step-by-step explanation:

7 0
3 years ago
-2x+4y= 12 3x+7y= 18 last one greatly appreciated
LenaWriter [7]

Value of x is \frac{-6}{13}\\ and y is \frac{36}{13}

Solution set is (\frac{-6}{13}\\, \frac{36}{13})

Step-by-step explanation:

We need to solve the system of equations given.

-2x+4y=12\\3x+7y= 18

Solving

Let:

-2x+4y=12\,\,eq(1)\\3x+7y=18\,\,eq(2)

Multiply eq(1) by 3 and eq(2) by 2 and add both

-6x+12y=36\\6x+14y=36\\-------\\26y=72\\y=\frac{72}{26}\\y=\frac{36}{13}

Putting value of y in equation 1

-2x+4y=12\\-2x+4(\frac{36}{13})=12\\-2x+\frac{144}{13}=12\\-2x=12-\frac{144}{13}\\-2x=\frac{12*13-144}{13}\\-2x=\frac{12}{13}\\x=\frac{-6}{13}\\

So, value of x is \frac{-6}{13}\\ and y is \frac{36}{13}

Solution set is (\frac{-6}{13}\\, \frac{36}{13})

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

7 0
3 years ago
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