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KonstantinChe [14]
3 years ago
10

Mhanifa please help! This is due soon and I dont want to fail

Mathematics
1 answer:
bearhunter [10]3 years ago
3 0

Answer:

#1

<u>Sum of interior angles is 180:</u>

  • y = 180 - (42 + 31) = 107

<u>The law of sines:</u>

  • x / sin 107 = 11 / sin 42
  • x = 11 sin 107deg / sin 42deg
  • x = 15.72

#2

<u>The law of cosines:</u>

  • cos 76  = (6² + 17² - x² )/2(6)(17)
  • 204*0.24 = 325 - x²
  • x² = 325 - 48.96
  • x² = 276.04
  • x = √276.04
  • x = 16.61

#3

<u>Same as above:</u>

  • 2*9.4*10*cos 20 = (10² + 9.4² - x²)
  • 176.66 = 188.36 - x²
  • x² = 188.36 - 176.66
  • x² = 11.7
  • x = √11.7
  • x = 3.42

#4

<u>Sum of interior angles is 180:</u>

  • y = 180 - (52 + 94) = 34

<u>The law of sines:</u>

  • x / sin 34 = 15 / sin 94
  • x = 15 sin 34  / sin 94
  • x = 8.41
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What is the inverse of f(x) = sqft x+ 3
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Answer:

f^{-1} (x)=x^{2} -3

Step-by-step explanation:

Given the function

f\left(x\right)=\sqrt{x+3}

We can find the inverse function by exchanging x and y, and then solve for y.

y=\sqrt{x+3}

Replace x with y.

x=\sqrt{y+3}

square both sides

x^2=y+3

y=x^2-3

Hence,

f^{-1} (x)=x^{2} -3

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2 years ago
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Alex777 [14]

Answer:

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Multiply 2.345 x 0.023<br> show your work please
Mice21 [21]

Answer:

2.345×0.023

2.345..........3 decimal point

0.023........3 decimal point

    2345

×       23               1.    first we change it whole number for multiply.

····················          2.count the decimal point.here  6 decimal points are there.

+ 7 0 3  5          3.we got the answer 53935.here only 5 digits are there.

4 6 9 0 0         4.now we add one zero backside  053935

····························5 . final answer is   0.053935

 5  3  9  3   5

···························

answer is =0.053935

Step-by-step explanation:

3 0
2 years ago
Complete the following statement: f(3)=_____
Lesechka [4]
Using this equation, f(3) = 23.

In order to find the value of f(3), we need to take the f(x) equation and put 3 everywhere we see x. Then we follow the order of operations to solve. So, let's start with the original. 

f(x) = 2x^2 + 5sqrt(x - 2) 

Now place 3 in for each x. 

f(3) = 2(3)^2 + 5sqrt(3 - 2)

Now square the 3.

f(3) = 2(9) + 5 sqrt(3 - 2)

Do the subtraction inside of the parenthesis. 

f(3) = 2(9) + 5sqrt(1)

Take the square root

f(3) = 2(9) + 5(1)

Multiply. 

f(3) = 18 + 5

And add. 

f(3) = 23
4 0
3 years ago
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Alina [70]

Answer: A)

Step-by-step explanation: If You just look at the numbers you can single out which one is correct

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