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Kitty [74]
3 years ago
9

Solve for x. round to the nearest hundredth if necessary.

Mathematics
1 answer:
iris [78.8K]3 years ago
6 0

Answer: x=11.47

Step-by-step explanation:

Given the angle of 55 degrees, you know that the adjacent side is "x" and the length of the hypotenuse is 20.

Therefore, you need to remember the following identity:

cos\alpha=\frac{adjacent}{hypotenuse}

Then, knowing that:

\alpha=55\°\\adjacent=x\\hypotenuse=20

 You need to substitute these values intocos\alpha=\frac{adjacent}{hypotenuse}:

 cos(55\°)=\frac{x}{20}

Now, you can solve for "x":

20*cos(55\°)=x\\x=11.471

Rounded to the nearest hundreth:

x=11.47

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Step-by-step explanation:

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3 years ago
7b + 3 – 4b = 3 – 3(b + 4)
svlad2 [7]

Hello from MrBillDoesMath!

Answer:  b

Discussion:

7b + 3 - 4b = 3 - 3(b+4)  =>

7b + 3 - 4b = 3 - 3b -12 =>

(7b - 4b) + 3   = -3b - 9 =>

3b + 3 = -3b -9    =>      Add 9 to both sides

3b + 12 = -3b -9 + 9  =>

3b + 12 = -3b  =>         ( add 3b to both sides)

6b + 12 = 0 =>             (subtract 12 from both sides)

6b = -12 =>

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Thank you,

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7 0
3 years ago
30000 is ____ times as much as 30
drek231 [11]

Answer: 1000


Step-by-step explanation:

Well, what times thirty will equal 30,000

30*x=30000

x=1000

You can also figure this out by seeing how many zeros were added to 30,000.

If you found this helpful, please, if you do not mind giving me brainliest! Thanks! :)

5 0
3 years ago
Find the value of (-8)(-3)(-2)(4).<br><br> A.17<br> B.-17<br> C.192<br> D.-192<br><br> helppp
julsineya [31]
Note: two negatives multiplied together = one positive answer
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Multiply -8 and -3 together

-8(-3) = 24
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D) -192 is your answer


hope this helps

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