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Lostsunrise [7]
3 years ago
10

Fast I need help do t understand !!!!!

Mathematics
2 answers:
77julia77 [94]3 years ago
7 0
Answer: 21, hope it helps
goblinko [34]3 years ago
6 0

Answer:

....................21 .....................

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Square root of 324x^4
Hatshy [7]

Answer:

18x

Step-by-step explanation:

Rewrite, 324x² as 18x².

= √18x²

Pull terms out from under the radical, assuming positive real numbers.

18x

4 0
3 years ago
Can someone please help me out
ira [324]

BD \: is \: the \: bisector \: of \: \widehat{ABC} \Rightarrow \widehat{ABD}=\widehat{CBD}  \\\Rightarrow \widehat{ABC} = \widehat{ABD} + \widehat{CBD} = 2\widehat{ABD} = 2 \times 39 = 78° \\ \Rightarrow D. \: 78°

4 0
4 years ago
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Solve the triangle for x.
nalin [4]

Answer:

90.4°

Step-by-step explanation:

Use Law of Cosines to solve:

12² = 9² + 8² - 2(9)(8)Cos X

  144 = 81 + 64 - 144Cos X

     -1 = -144Cos X

         -1/144 = Cos X

            Cos^-1 (-1/144) = X

                     X = 90.39789056°

8 0
3 years ago
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If 4 is added to 3 times a number “a” the result is 16. What is the number?
Orlov [11]

Answer:

4

Step-by-step explanation:

4+3a=16

-4. -4

3a=12

/3. /3

a=4

5 0
3 years ago
PLEASE HELP NEEDED TODAY
gtnhenbr [62]

Answer:

the missing side of the rectangle should be twelve

Step-by-step explanation:

3 0
3 years ago
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